/* ---- Score header (container of summary + cards) ---- */

.densidad-form .score-header {
    display: grid;
    gap: 1rem;
    padding: 1.55rem 1.75rem 1.3rem;
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--surface-container-lowest) 88%, white 12%) 0%,
        rgba(117, 13, 47, 0.055) 44%,
        color-mix(in srgb, var(--surface-container) 72%, white 28%) 100%
    );
    border-bottom: none;
}

.densidad-form .score-header::after {
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(224, 191, 191, 0.35), transparent);
}

.densidad-form .score-header__intro {
    display: grid;
    gap: 0.48rem;
    max-width: 58ch;
    padding-bottom: 1.05rem;
    border-bottom: 1px solid color-mix(in srgb, var(--outline-variant) 64%, transparent);
}

.densidad-form .score-header__eyebrow {
    font-size: 10px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: color-mix(in srgb, var(--on-surface-variant) 80%, var(--primary) 20%);
}

.densidad-form .score-header__title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    flex-wrap: wrap;
}

.densidad-form .score-header__title {
    margin: 0;
    font-size: clamp(1.08rem, 0.98rem + 0.35vw, 1.28rem);
    line-height: 1.12;
    letter-spacing: -0.03em;
    color: var(--primary);
    text-wrap: balance;
}

.densidad-form .score-header__description {
    margin: 0;
    max-width: 56ch;
    font-size: 0.84rem;
    line-height: 1.72;
    color: color-mix(in srgb, var(--on-surface-variant) 88%, var(--density-ink, #202423) 12%);
    text-wrap: pretty;
}

.densidad-form .alta-plus-card__identity-display,
.densidad-form .alta-plus-pendiente__identity-display {
    display: grid;
    gap: 0.36rem;
    margin-top: 0.35rem;
    padding-left: 0.85rem;
    border-left: 3px solid var(--density-maroon, #7a1234);
}

.densidad-form .alta-plus-pendiente {
    position: relative;
    padding-top: clamp(1.15rem, 2vw, 1.35rem);
    padding-right: clamp(4.2rem, 8vw, 5.2rem);
    transition:
        border-color 180ms ease,
        background-color 180ms ease,
        box-shadow 180ms ease,
        transform 180ms ease;
}

.densidad-form .alta-plus-pendiente__status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    padding: 0;
    border: 1px solid color-mix(in srgb, var(--density-muted, #69716f) 24%, transparent);
    border-radius: 50%;
    background: rgba(255, 253, 250, 0.9);
    color: var(--density-muted, #69716f);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.82),
        0 10px 18px -16px rgba(32, 36, 35, 0.36);
    z-index: 1;
}

.densidad-form .alta-plus-pendiente__status svg {
    width: 1.05rem;
    height: 1.05rem;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.densidad-form .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.densidad-form .alta-plus-pendiente.is-checking {
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 20%, var(--density-line, #ddd5cc));
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.99), rgba(225, 239, 235, 0.34));
}

.densidad-form .alta-plus-pendiente.is-valid {
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 34%, var(--density-line, #ddd5cc));
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.99), rgba(225, 239, 235, 0.48));
    box-shadow:
        inset 4px 0 0 color-mix(in srgb, var(--density-teal, #1f665a) 82%, white 18%),
        0 12px 24px -24px rgba(31, 102, 90, 0.45);
}

.densidad-form .alta-plus-pendiente.is-invalid {
    border-color: color-mix(in srgb, var(--density-maroon, #7a1234) 36%, var(--density-line, #ddd5cc));
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.99), rgba(244, 230, 235, 0.54));
    box-shadow:
        inset 4px 0 0 var(--density-maroon, #7a1234),
        0 12px 26px -24px rgba(122, 18, 52, 0.42);
}

.densidad-form .alta-plus-pendiente.is-checking .alta-plus-pendiente__status {
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 24%, transparent);
    background: color-mix(in srgb, var(--density-teal, #1f665a) 9%, white 91%);
    color: var(--density-teal, #1f665a);
}

.densidad-form .alta-plus-pendiente.is-valid .alta-plus-pendiente__status {
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 28%, transparent);
    background: color-mix(in srgb, var(--density-teal, #1f665a) 12%, white 88%);
    color: var(--density-teal, #1f665a);
}

.densidad-form .alta-plus-pendiente.is-invalid .alta-plus-pendiente__status {
    border-color: color-mix(in srgb, var(--density-maroon, #7a1234) 28%, transparent);
    background: color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 72%, white 28%);
    color: var(--density-maroon, #7a1234);
}

.densidad-form .alta-plus-pendiente.is-valid .alta-plus-pendiente__identity-display {
    border-left-color: var(--density-teal, #1f665a);
}

.densidad-form .alta-plus-pendiente.is-invalid .alta-plus-pendiente__hint {
    color: color-mix(in srgb, var(--density-maroon, #7a1234) 70%, var(--density-muted, #69716f) 30%);
}

@media (prefers-reduced-motion: no-preference) {
    .densidad-form .alta-plus-pendiente.is-checking .alta-plus-pendiente__status svg {
        animation: alta-plus-status-spin 0.9s linear infinite;
    }
}

@keyframes alta-plus-status-spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 620px) {
    .densidad-form .alta-plus-pendiente {
        padding-right: 3.8rem;
    }

    .densidad-form .alta-plus-pendiente__status {
        top: 0.9rem;
        right: 0.9rem;
        width: 1.82rem;
        height: 1.82rem;
    }

    .densidad-form .alta-plus-pendiente__status svg {
        width: 0.96rem;
        height: 0.96rem;
    }
}

.densidad-form .alta-plus-card__identity-row,
.densidad-form .alta-plus-pendiente__identity-row {
    position: relative;
    display: grid;
    grid-template-columns: minmax(5.9rem, auto) minmax(0, 1fr);
    gap: 0.7rem;
    align-items: baseline;
}

.densidad-form .alta-plus-card__identity-row span,
.densidad-form .alta-plus-pendiente__identity-row span {
    color: var(--density-muted, #69716f);
    font-size: 0.72rem;
    font-weight: 950;
    letter-spacing: 0.12em;
    line-height: 1;
    text-transform: uppercase;
}

.densidad-form .alta-plus-card__identity-row strong,
.densidad-form .alta-plus-pendiente__identity-row strong {
    color: var(--density-ink, #202423);
    font-size: clamp(1.08rem, 1.7vw, 1.46rem);
    font-weight: 950;
    letter-spacing: -0.025em;
    line-height: 1.05;
}

.densidad-form .alta-plus-card__identity-row:last-child strong,
.densidad-form .alta-plus-pendiente__identity-row:last-child strong {
    color: var(--density-maroon, #7a1234);
}

.densidad-form .alta-plus-pendiente__identity-label {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.28rem;
    width: fit-content;
}

.densidad-form .alta-plus-pendiente__info-button {
    width: 1.08rem;
    height: 1.08rem;
    min-width: 1.08rem;
}

.densidad-form .alta-plus-pendiente__identity-row .alta-plus-pendiente__tooltip {
    left: 0;
    top: calc(100% + 0.45rem);
    width: min(20rem, calc(100vw - 3rem));
    margin-top: 0;
    color: #ffffff;
    font-size: 0.74rem;
    font-weight: 760;
    letter-spacing: 0;
    line-height: 1.4;
    text-align: left;
    text-transform: none;
}

.densidad-form .alta-plus-pendiente__info-button:hover + .alta-plus-pendiente__tooltip,
.densidad-form .alta-plus-pendiente__info-button:focus-visible + .alta-plus-pendiente__tooltip {
    opacity: 1;
    transform: translateY(0);
}

.densidad-form .result-item__details--pavement {
    display: inline-flex;
    width: fit-content;
    max-width: 100%;
    margin-top: 0.38rem;
    padding: 0.28rem 0.5rem;
    border-left: 2px solid var(--density-maroon, #7a1234);
    border-radius: 0 8px 8px 0;
    background: color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 72%, white 28%);
    color: color-mix(in srgb, var(--density-maroon, #7a1234) 72%, var(--density-ink, #202423) 28%);
    font-size: 0.78rem;
    font-weight: 750;
}
/* ---- Status pill (refined "telemetry" treatment) ---- */

.densidad-form .score-header__status {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    min-height: 26px;
    padding: 0.32rem 0.7rem 0.32rem 0.55rem;
    border-radius: 999px;
    background: rgba(117, 13, 47, 0.05);
    border: 1px solid rgba(117, 13, 47, 0.14);
    color: var(--primary);
    font-size: 11.5px;
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.01em;
    text-transform: none;
    white-space: nowrap;
}

.densidad-form .score-header__status--pending {
    background: rgba(148, 163, 184, 0.14);
    color: var(--gray-700, #475569);
    border-color: rgba(148, 163, 184, 0.32);
}

.densidad-form .score-header__status--complete {
    background: rgba(34, 197, 94, 0.12);
    color: #15803d;
    border-color: rgba(34, 197, 94, 0.3);
}

.densidad-form .score-header__status-dot {
    flex: 0 0 auto;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    display: inline-block;
    position: relative;
}

@media (prefers-reduced-motion: no-preference) {
    .densidad-form .score-header__status--active .score-header__status-dot {
        animation: score-header-status-pulse 2.2s ease-out infinite;
    }
}

@keyframes score-header-status-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(117, 13, 47, 0.55); }
    70%  { box-shadow: 0 0 0 8px rgba(117, 13, 47, 0); }
    100% { box-shadow: 0 0 0 0 rgba(117, 13, 47, 0); }
}

/* ---- Score cards grid + individual cards ---- */

.densidad-form .score-grid {
    gap: 0.8rem;
}

.densidad-form .score-card {
    display: grid;
    align-content: center;
    min-width: 0;
    min-height: 142px;
    padding: clamp(1rem, 2vw, 1.35rem);
    border: 1px solid var(--density-line, #ddd5cc);
    border-radius: 18px;
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.98), rgba(246, 243, 239, 0.72));
    box-shadow: inset 0 1px 0 rgba(255, 253, 250, 0.9);
}

.densidad-form .score-card--real {
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 24%, var(--density-line, #ddd5cc));
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.98), rgba(225, 239, 235, 0.76));
}

/* ---- Score label (centered for symmetry with the value) ---- */

.densidad-form .score-card .score-label {
    margin: 0 0 0.85rem;
    color: var(--density-muted, #69716f);
    font-size: 0.7rem;
    font-weight: 950;
    line-height: 1.2;
    letter-spacing: 0.13em;
    text-transform: uppercase;
    text-align: center;
}

/* ---- Score value (centered flex stack — the centering fix) ---- */

.densidad-form .score-card .score-value {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    color: var(--density-maroon, #7a1234);
    font-size: clamp(2.25rem, 4.1vw, 3.5rem);
    font-weight: 850;
    line-height: 0.95;
    letter-spacing: -0.055em;
    font-variant-numeric: tabular-nums;
    text-shadow: none;
}

.densidad-form .score-card .score-value .peso-ponderado-value {
    display: block;
    text-align: center;
    width: 100%;
    min-width: 0;
    max-width: 100%;
    overflow-wrap: normal;
}

.densidad-form .score-card--real .score-value,
.densidad-form .score-card .score-value--real {
    color: var(--density-teal, #1f665a);
}

.densidad-form .score-separator {
    display: none;
}

/* ---- Responsive: 980px and 620px breakpoints ---- */

@media (max-width: 980px) {
    .densidad-form .score-header {
        grid-template-columns: 1fr;
    }

    .densidad-form .score-grid {
        max-width: 520px;
    }

    .densidad-form .score-header__status {
        min-height: 24px;
    }
}

@media (max-width: 620px) {
    .densidad-form .score-grid {
        grid-template-columns: 1fr;
    }

    .densidad-form .score-card {
        min-height: 118px;
    }
}


/* ==================================================================
 * PHASE 2 — Step 3 result items (sections, rows, badges, detail chips)
 *
 * Supersedes section-card / result-item / badge / detail-chip rules
 * scattered across calculadora-densidad.css lines 155–180, 429–500,
 * 1004–1145, 1248–1365, 3781–3870, 4294–4400, 4597–4615, 5060–5080,
 * 5224–5260.
 * ================================================================== */

/* ---- Section card (terreno / equipment / infrastructure / context) ---- */

.densidad-form .section-card {
    position: relative;
    overflow: visible;
    padding: clamp(1.15rem, 2.5vw, 1.7rem);
    margin-bottom: 1.25rem;
    background: var(--surface-container-lowest);
    border: 1px solid color-mix(in srgb, var(--outline-variant) 70%, transparent);
    border-radius: 18px;
    box-shadow: 0 1px 0 rgba(26, 28, 28, 0.06);
    transition: box-shadow 0.22s var(--ease-out), transform 0.22s var(--ease-out);
}

.densidad-form .section-card:hover {
    box-shadow: 0 6px 18px -14px rgba(45, 38, 30, 0.32);
}

.densidad-form .section-card::before {
    content: none;
}

.densidad-form .section-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.densidad-form .section-card__title-stack {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    min-width: 0;
}

.densidad-form .section-card__title-stack h3,
.densidad-form .section-card__header h3 {
    margin: 0;
    color: var(--density-ink, var(--gray-900));
    font-size: 0.92rem;
    font-weight: 950;
    letter-spacing: 0.035em;
    text-transform: uppercase;
}

.densidad-form .section-card__subtitle {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.45;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: var(--on-surface-variant);
}

/* ---- Result item rows ---- */

.densidad-form .result-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 10px 14px;
    margin-bottom: 0;
    background: #fff;
    border: none;
    border-bottom: 1px solid var(--gray-100);
    border-radius: 0;
}

.densidad-form .result-item:last-child {
    border-bottom: none;
}

.densidad-form .result-item.is-active,
.densidad-form .result-item.is-inactive {
    background: #fff;
}

.densidad-form .result-item > div:first-child {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.densidad-form .result-item__label {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-700);
}

.densidad-form .result-item.is-inactive .result-item__label {
    color: var(--gray-400);
    font-weight: 400;
}

.densidad-form .result-item__value {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-900);
    font-variant-numeric: tabular-nums;
}

.densidad-form .result-item.is-inactive .result-item__value {
    color: var(--gray-300);
}

.densidad-form .result-item__actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    gap: var(--space-3, 0.75rem);
    padding-top: 1px;
}

.densidad-form .result-item__details {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem;
    max-width: 100%;
    margin-top: 6px;
    font-size: 12px;
    line-height: 1.4;
    color: var(--gray-500);
    overflow-wrap: break-word;
    word-break: break-word;
}

/* ---- Badges ---- */

.densidad-form .badge--neutral,
.densidad-form .badge--success,
.densidad-form .badge--info,
.densidad-form .badge--danger,
.densidad-form .badge--pending {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 2px 8px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-size: 10px;
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.densidad-form .badge--neutral {
    background: var(--gray-100);
    color: var(--gray-600);
    border-color: var(--gray-200);
}

.densidad-form .badge--success {
    background: #ecfdf5;
    color: #166534;
    border-color: #86efac;
}

.densidad-form .badge--info {
    background: #eff6ff;
    color: #1d4ed8;
    border-color: #bfdbfe;
}

.densidad-form .badge--danger {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.densidad-form .badge--pending {
    background: rgba(117, 13, 47, 0.08);
    color: var(--primary);
    border-color: rgba(117, 13, 47, 0.18);
}

/* ---- Detail chips (in result-item__details) ---- */

.densidad-form .detail-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 1em;
    font-weight: 500;
    line-height: 1.2;
    white-space: nowrap;
}

.densidad-form .detail-chip--status-ok {
    background: var(--success-bg);
    color: var(--success-text);
    border-color: color-mix(in srgb, var(--success-text) 18%, transparent);
}

.densidad-form .detail-chip--status-warn {
    background: var(--warning-bg);
    color: var(--warning-text);
    border-color: color-mix(in srgb, var(--warning-text) 18%, transparent);
}

.densidad-form .detail-chip--status-danger {
    background: var(--error-bg);
    color: var(--error-text);
    border-color: color-mix(in srgb, var(--error-text) 18%, transparent);
}

.densidad-form .detail-chip--status-neutral {
    background: var(--gray-100);
    color: var(--gray-600);
    border-color: var(--gray-200);
}

.densidad-form .detail-chip--metric {
    background: var(--gray-100);
    color: var(--gray-700);
    border-color: var(--gray-200);
    font-variant-numeric: tabular-nums;
}

.densidad-form .detail-chip--soft {
    background: var(--gray-100);
    color: var(--gray-700);
    border-color: var(--gray-200);
    font-variant-numeric: tabular-nums;
}


/* ==================================================================
 * PHASE 3  Step 2 form inputs (checkboxes, selects, helpers)
 *
 * ================================================================== */

/* ---- Form groups ---- */

.densidad-form .section-card .form-group {
    margin-bottom: 1.25rem;
}

.densidad-form .section-card .form-group label {
    margin-bottom: 0.375rem;
    color: var(--gray-700);
    font-size: 13px;
    font-weight: 500;
}

.densidad-form .section-card .form-group select {
    width: 100%;
    padding: 0.625rem 0.75rem;
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 13.5px;
    color: var(--gray-900);
    transition: border-color 0.18s var(--ease-out), box-shadow 0.18s var(--ease-out);
}

.densidad-form .section-card .form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent);
}

.densidad-form .section-card .form-group select:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--primary) 40%, transparent);
    outline-offset: 2px;
}

.densidad-form .form-group--required-field {
    position: relative;
}

.densidad-form .form-group--required-field > label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.densidad-form .analysis-guidance {
    display: block;
    margin-bottom: clamp(1rem, 2.5vw, 1.7rem);
}

.densidad-form .analysis-guidance--pending-only .pending-summary {
    width: 100%;
}

.densidad-form .analysis-guidance--pending-only .pending-summary__list {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.9fr) minmax(18rem, 1.35fr);
    align-items: stretch;
}

.densidad-form .pending-summary__item {
    grid-template-columns: auto minmax(0, 1fr);
    grid-template-rows: auto auto;
    align-content: center;
    min-height: 4.3rem;
    gap: 0.28rem 0.55rem;
    padding: 0.72rem 0.75rem;
}

.densidad-form .pending-summary__item > span:not(.pending-summary__dot) {
    min-width: 0;
    color: color-mix(in srgb, currentColor 86%, var(--density-ink, #202423) 14%);
    font-weight: 850;
    line-height: 1.25;
}

.densidad-form .pending-summary__item strong {
    grid-column: 2;
    max-width: none;
    min-width: 0;
    color: currentColor;
    font-size: 0.82rem;
    font-weight: 760;
    line-height: 1.3;
    overflow-wrap: anywhere;
    text-align: left;
}

.densidad-form .pending-summary__item[data-pending-field="jerarquia-vial"] strong {
    font-size: 0.8rem;
}

.densidad-form .pending-summary__item.is-partial {
    align-items: start;
    border-color: color-mix(in srgb, var(--density-gold, #8b6a2f) 34%, transparent);
    background: color-mix(in srgb, var(--density-gold-soft, #f3ead7) 78%, white 22%);
    color: color-mix(in srgb, var(--density-gold, #8b6a2f) 78%, var(--density-ink, #202423) 22%);
}

.densidad-form .pending-summary__item.is-partial .pending-summary__dot {
    margin-top: 0.28rem;
    background: var(--density-maroon, #7a1234);
}

/* ---- Analysis icons and form hints ---- */

.densidad-form .form-group-hint__item {
    position: relative;
    min-width: 0;
}

.densidad-form .form-group-hint__item:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--density-maroon, #7a1234) 24%, transparent);
    outline-offset: 2px;
}

.densidad-form .analysis-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 1.55rem;
    height: 1.55rem;
    border-radius: 999px;
}

.densidad-form .analysis-icon--auto {
    border: 1px solid color-mix(in srgb, #1f665a 28%, transparent);
    background: #e1efeb;
    color: #1f665a;
}

.densidad-form .analysis-icon--manual {
    border: 1px solid color-mix(in srgb, #7a1234 28%, transparent);
    background: #f4e6eb;
    color: #7a1234;
}

.densidad-form .analysis-icon--hybrid {
    gap: 0.08rem;
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 80%, transparent);
    background: #ffffff;
    color: var(--density-ink, #202423);
}

.densidad-form .analysis-icon__auto-mark {
    color: #1f665a;
}

.densidad-form .analysis-icon__manual-mark {
    color: #7a1234;
}

.densidad-form [data-tooltip]::after {
    position: absolute;
    left: 0;
    bottom: calc(100% + 0.48rem);
    width: min(18rem, 72vw);
    padding: 0.5rem 0.62rem;
    border: 1px solid color-mix(in srgb, var(--density-ink, #202423) 16%, transparent);
    border-radius: 10px;
    background: color-mix(in srgb, var(--density-ink, #202423) 94%, white 6%);
    color: #ffffff;
    content: attr(data-tooltip);
    font-size: 0.72rem;
    font-weight: 750;
    line-height: 1.35;
    opacity: 0;
    pointer-events: none;
    transform: translateY(4px);
    transition:
        opacity 160ms var(--ease-out, ease),
        transform 160ms var(--ease-out, ease);
    z-index: 6;
}

.densidad-form [data-tooltip]:hover::after,
.densidad-form [data-tooltip]:focus-visible::after {
    opacity: 1;
    transform: translateY(0);
}

.densidad-form .form-group-hint {
    display: none;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.7rem 0 0.8rem;
    padding: 0.52rem 0.6rem;
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 78%, transparent);
    border-radius: 14px;
    background: rgba(255, 253, 250, 0.78);
    color: var(--density-muted, #69716f);
    font-size: 0.76rem;
    font-weight: 750;
    line-height: 1.35;
}

.densidad-form .form-group-hint--hybrid {
    display: flex;
}

.densidad-form .form-group-hint__item {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.densidad-form .form-group-hint--hybrid .form-group-hint__item:first-child {
    color: #1f665a;
}

.densidad-form .form-group-hint--hybrid .form-group-hint__item:last-child {
    color: #7a1234;
}

.densidad-form .field-manual-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    border: 1px solid color-mix(in srgb, #7a1234 28%, transparent);
    background: #f4e6eb;
    color: #7a1234;
}

.densidad-form .field-manual-badge {
    gap: 0.28rem;
    min-height: 1.55rem;
    padding: 0.18rem 0.48rem;
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 850;
    letter-spacing: 0.08em;
    line-height: 1;
    text-transform: uppercase;
}

.densidad-form .manual-group-header {
    position: relative;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.38rem 0.5rem;
    min-width: 0;
    margin-top: 0.95rem;
    margin-bottom: 0.45rem;
}

.densidad-form .manual-group-header .cb-group-eyebrow {
    margin: 0;
    line-height: 1.25;
}

.densidad-form .manual-info-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.65rem;
    height: 1.65rem;
    padding: 0;
    border: 1px solid color-mix(in srgb, var(--density-muted, #69716f) 22%, transparent);
    border-radius: 999px;
    background: rgba(255, 253, 250, 0.92);
    color: color-mix(in srgb, var(--density-muted, #69716f) 86%, var(--density-ink, #202423) 14%);
    cursor: pointer;
    transition:
        border-color 160ms var(--ease-out, ease),
        background 160ms var(--ease-out, ease),
        color 160ms var(--ease-out, ease),
        transform 160ms var(--ease-out, ease);
}

.densidad-form .manual-info-button:hover {
    border-color: color-mix(in srgb, #7a1234 30%, transparent);
    background: #f4e6eb;
    color: #7a1234;
}

.densidad-form .manual-info-button:active {
    transform: translateY(1px);
}

.densidad-form .manual-info-button:focus-visible {
    outline: 3px solid color-mix(in srgb, #7a1234 24%, transparent);
    outline-offset: 2px;
}

.densidad-form .manual-info-tooltip {
    position: absolute;
    left: 0;
    top: calc(100% + 0.42rem);
    width: min(25rem, calc(100vw - 3rem));
    padding: 0.58rem 0.7rem;
    border: 1px solid color-mix(in srgb, #7a1234 20%, transparent);
    border-radius: 12px;
    background: color-mix(in srgb, var(--density-ink, #202423) 94%, white 6%);
    color: #ffffff;
    font-size: 0.74rem;
    font-weight: 760;
    line-height: 1.4;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-4px);
    transition:
        opacity 160ms var(--ease-out, ease),
        transform 160ms var(--ease-out, ease);
    z-index: 8;
}

.densidad-form .manual-info-button:hover + .manual-info-tooltip,
.densidad-form .manual-info-button:focus-visible + .manual-info-tooltip {
    opacity: 1;
    transform: translateY(0);
}

/* ---- Auto-resolved items (grid of computed values) ---- */

.densidad-form .auto-items {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
    margin: 0.65rem 0 1rem;
}

.densidad-form .auto-item {
    min-width: 0;
    padding: 0.55rem 0.65rem;
    background: color-mix(in srgb, #e1efeb 62%, white 38%);
    border: 1px solid color-mix(in srgb, #1f665a 20%, transparent);
    border-radius: 12px;
    color: #1f665a;
    font-size: 0.82rem;
    font-weight: 800;
}

.densidad-form .auto-item svg {
    color: #1f665a;
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    .densidad-form [data-tooltip]::after,
    .densidad-form .manual-info-button,
    .densidad-form .manual-info-tooltip {
        transition: none;
        transform: none;
    }
}

@media (max-width: 760px) {
    .densidad-form .analysis-guidance--pending-only .pending-summary__list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .densidad-form .analysis-guidance--pending-only .pending-summary__list {
        grid-template-columns: 1fr;
    }

    .densidad-form .manual-info-tooltip {
        left: auto;
        right: 0;
        width: min(20rem, calc(100vw - 2rem));
    }

    .densidad-form .form-group--required-field > label {
        align-items: flex-start;
        justify-content: flex-start;
    }

    .densidad-form .auto-items {
        grid-template-columns: 1fr;
    }
}

/* ---- Checkbox group eyebrow ---- */

.densidad-form .cb-group-eyebrow {
    color: var(--on-surface-variant);
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.densidad-form .cb-group-eyebrow::after {
    height: 2px;
    background: var(--surface-container);
}

/* ---- Checkbox list / rows ---- */

.densidad-form .cb-list {
    display: grid;
    gap: 0.35rem;
}

.densidad-form .manual-input-group {
    position: relative;
    display: grid;
    gap: 0.58rem;
    margin: 0.35rem 0 1rem;
    padding: 0.72rem;
    border: 1px solid color-mix(in srgb, #7a1234 18%, var(--density-line, #ddd5cc));
    border-radius: 14px;
    background:
        linear-gradient(135deg, color-mix(in srgb, #f4e6eb 32%, transparent), rgba(255, 253, 250, 0.72)),
        rgba(255, 253, 250, 0.82);
}

.densidad-form .manual-input-group__meta {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.42rem;
    justify-self: end;
}

.densidad-form .manual-input-group > .cb-list {
    margin: 0;
}

.densidad-form .cb-row {
    position: relative;
    border-bottom: none;
    border-radius: var(--radius-md);
    box-shadow: inset 4px 0 0 transparent;
    outline: transparent solid 2px;
    outline-offset: 1px;
    transition:
        outline-color 0.18s var(--ease-out),
        background 0.2s var(--ease-out),
        box-shadow 0.2s var(--ease-out);
}

.densidad-form .cb-row:hover {
    background: var(--surface-container);
}

.densidad-form .cb-row:focus-within {
    outline-color: color-mix(in srgb, var(--civic-secondary-teal) 35%, transparent);
}

.densidad-form .cb-row.is-selected {
    background: color-mix(in srgb, var(--primary) 6%, var(--surface-container-lowest));
    box-shadow: inset 4px 0 0 var(--primary);
}

.densidad-form .cb-row > label {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 44px;
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
    line-height: 1.45;
    cursor: pointer;
    gap: 0.58rem;
}

.densidad-form .cb-row > label > span:not(.cb-row__mark):not(.field-manual-badge) {
    min-width: 0;
}

.densidad-form .cb-row__mark {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--outline-variant);
    border-radius: 5px;
    background: #fff;
    transition: background 0.18s var(--ease-out), border-color 0.18s var(--ease-out);
}

.densidad-form .cb-row.is-selected .cb-row__mark {
    background: linear-gradient(145deg, var(--primary) 0%, var(--primary-container) 100%);
    border-color: var(--primary);
}

.densidad-form .cb-row input[type="checkbox"]:focus-visible + label .cb-row__mark {
    outline: 2px solid color-mix(in srgb, var(--primary) 40%, transparent);
    outline-offset: 2px;
}

.densidad-form .cb-row .cb-row__slot {
    max-height: 0;
    overflow: hidden;
    padding-inline: 1rem;
    transition: max-height 0.22s var(--ease-out), padding 0.22s var(--ease-out);
}

.densidad-form .cb-row.is-selected .cb-row__slot {
    max-height: 160px;
    padding-bottom: 0.875rem;
}

.densidad-form .cb-row__slot-input {
    background: transparent;
}

.densidad-form .cb-row__slot-input:not(:disabled) {
    min-height: 44px;
    padding: 0.35rem;
    border-bottom-width: 2px;
}

.densidad-form .cb-row__slot-input:focus-visible {
    outline: 2px solid color-mix(in srgb, var(--primary) 40%, transparent);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Divider between automatic grids and checkbox lists inside hybrid sections */
.densidad-form .section-card .auto-items + .manual-input-group {
    margin-top: 0.7rem;
}


/* ==================================================================
 * PHASE 4 — Step 1 upload + CVE banner
 *
 * Supersedes densidad-upload__* and cve-cat-banner__* rules from
 * lines 3086–3300, 3530–3640, 5248–5280, 5473–5560 of
 * calculadora-densidad.css.
 * ================================================================== */

/* ---- Upload zone wrapper ---- */

.densidad-form .upload-zone.densidad-upload {
    position: relative;
    margin-top: var(--space-6);
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 0;
    box-shadow: none;
    text-align: left;
    cursor: default;
}

.densidad-form .upload-zone.densidad-upload::before {
    content: none;
    display: none;
}

.densidad-form .densidad-upload {
    display: grid;
    gap: 0.9rem;
}

/* ---- Upload card (drag-drop target) ---- */

.densidad-form .densidad-upload__card {
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(244, 230, 235, 0.76), rgba(255, 253, 250, 0.92)),
        var(--density-surface, var(--surface-container-lowest));
    border: 1.5px dashed rgba(122, 18, 52, 0.36);
    border-radius: 18px;
    transition:
        border-color 0.18s var(--ease-out),
        background 0.18s var(--ease-out),
        box-shadow 0.22s var(--ease-out),
        transform 0.18s var(--ease-spring);
}

.densidad-form .densidad-upload__card:hover,
.densidad-form .densidad-upload.is-dragover .densidad-upload__card {
    border-color: var(--density-maroon, var(--primary));
    background: linear-gradient(135deg, rgba(244, 230, 235, 0.95), rgba(225, 239, 235, 0.5));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--civic-secondary-teal) 22%, transparent);
    transform: translateY(-1px);
}

.densidad-form .densidad-upload.has-file .densidad-upload__card {
    border-style: solid;
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 28%, transparent);
    background:
        linear-gradient(135deg, rgba(225, 239, 235, 0.46), rgba(255, 253, 250, 0.96)),
        var(--density-surface, #fffdfa);
    transform: none;
}

/* ---- Visually-hidden file input ---- */

.densidad-form .densidad-upload__input {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.densidad-form .densidad-upload:has(.densidad-upload__input:focus-visible) .densidad-upload__hit {
    outline: 3px solid color-mix(in srgb, var(--civic-secondary-teal) 45%, transparent);
    outline-offset: 2px;
}

/* ---- Upload hit target (icon + text + cta) ---- */

.densidad-form .densidad-upload__hit {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    min-height: 132px;
    padding: clamp(1rem, 3vw, 1.7rem);
    cursor: pointer;
}

.densidad-form .densidad-upload__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--density-teal-soft, color-mix(in srgb, var(--civic-secondary-teal) 18%, transparent));
    color: var(--density-teal, var(--civic-secondary-teal));
    border-radius: 16px;
    box-shadow: inset 0 0 0 1px rgba(31, 102, 90, 0.16);
}

.densidad-form .densidad-upload__text {
    flex: 1 1 12rem;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    text-align: left;
}

.densidad-form .densidad-upload__title {
    display: block;
    color: var(--density-ink, var(--on-surface));
    font-size: 1rem;
    font-weight: 900;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.densidad-form .densidad-upload__hint {
    display: block;
    margin-top: 0.25rem;
    color: var(--density-muted, var(--on-surface-variant));
    font-size: 0.86rem;
    line-height: 1.45;
}

/* ---- Upload CTA pill ---- */

.densidad-form .densidad-upload__cta {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.65rem 1rem;
    background: var(--density-maroon, var(--primary));
    color: #fffdfa;
    border: 1px solid var(--density-maroon, var(--primary));
    font-size: 0.76rem;
    font-weight: 900;
    border-radius: 0.75em;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    box-shadow: 0 10px 24px -18px rgba(122, 18, 52, 0.75);
    pointer-events: none;
}

.densidad-form .densidad-upload.has-file .densidad-upload__cta {
    background: var(--surface-container);
    color: var(--on-surface);
    border-color: var(--outline-variant);
    box-shadow: none;
}

/* ---- File loaded status row ---- */

.densidad-form .densidad-upload__status:not([hidden]) {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "label filename action";
    gap: 0.75rem 1rem;
    align-items: center;
    padding: 1rem 1.1rem;
    background: linear-gradient(135deg, rgba(225, 239, 235, 0.74), rgba(255, 253, 250, 0.82));
    border: 1px solid color-mix(in srgb, var(--density-teal, #1f665a) 30%, transparent);
    border-radius: 16px;
    box-shadow: inset 0 1px 0 rgba(255, 253, 250, 0.7);
}

.densidad-form .densidad-upload__status-label {
    grid-area: label;
    color: color-mix(in srgb, var(--density-teal, #1f665a) 82%, var(--density-ink, #202423) 18%);
    font-size: 0.68rem;
    font-weight: 950;
    line-height: 1.1;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    white-space: nowrap;
}

.densidad-form .densidad-upload__filename {
    grid-area: filename;
    justify-self: start;
    min-width: 0;
    color: var(--density-ink, var(--on-surface));
    font-size: 0.94rem;
    font-weight: 850;
    line-height: 1.3;
    overflow-wrap: anywhere;
}

/* ---- "Change file" button (post-upload) ---- */

.densidad-form .densidad-upload__change {
    grid-area: action;
    min-height: 40px;
    max-width: 220px;
    padding: 0.62rem 1rem;
    background: #fffdfa;
    color: var(--density-maroon, var(--primary));
    border: 1px solid color-mix(in srgb, var(--density-maroon, var(--primary)) 42%, transparent);
    border-radius: 999px;
    box-shadow: none;
    font-size: 0.72rem;
    font-weight: 950;
    line-height: 1;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    transition:
        background-color 180ms var(--ease-out),
        border-color 180ms var(--ease-out),
        color 180ms var(--ease-out),
        transform 160ms var(--ease-spring),
        box-shadow 180ms var(--ease-out);
}

.densidad-form .densidad-upload__change:hover,
.densidad-form .densidad-upload__change:focus-visible {
    background: var(--density-maroon, var(--primary));
    color: #fffdfa;
    border-color: var(--density-maroon, var(--primary));
    box-shadow: 0 12px 24px -18px rgba(122, 18, 52, 0.58);
    outline: none;
}

.densidad-form .densidad-upload__change:active {
    transform: translateY(1px) scale(0.99);
}

.densidad-form .densidad-upload__help {
    margin-top: var(--space-4);
    color: var(--density-muted, var(--on-surface-variant));
}

.densidad-form .upload-requirements {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem;
    color: var(--density-muted, var(--on-surface-variant));
    font-size: 0.85rem;
}

/* ---- Responsive: collapse hit grid on narrow viewports ---- */

@media (max-width: 540px) {
    .densidad-form .densidad-upload__hit {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .densidad-form .densidad-upload__text {
        text-align: center;
        align-items: center;
    }

    .densidad-form .densidad-upload__icon {
        justify-self: center;
    }

    .densidad-form .densidad-upload__cta {
        width: 100%;
    }
}

/* ---- CVE category banner (shown after upload classifies the predio) ---- */

.densidad-form .cve-cat-banner:not([hidden]) {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    width: 100%;
    min-height: 3rem;
    padding: 0.72rem 0.9rem;
    margin: 0 0 1.15rem;
    background:
        linear-gradient(
            180deg,
            color-mix(in srgb, var(--surface-container-lowest) 98%, white 2%) 0%,
            color-mix(in srgb, var(--surface-container) 92%, white 8%) 100%
        );
    border: none;
    border-radius: calc(var(--radius-md, 10px) + 2px);
    box-shadow:
        inset 0 0 0 1px color-mix(in srgb, var(--density-line, #ddd5cc) 78%, transparent),
        0 8px 16px -20px rgba(26, 28, 28, 0.24);
}

.densidad-form .cve-cat-banner__text {
    display: grid;
    gap: 0.16rem;
    min-width: 0;
}

.densidad-form .cve-cat-banner__label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--on-surface-variant);
}

.densidad-form .cve-cat-banner__meta {
    color: var(--density-ink, #202423);
    font-size: 0.86rem;
    font-weight: 650;
    letter-spacing: -0.01em;
}

.densidad-form .cve-cat-banner__value {
    flex: 0 1 auto;
    max-width: 100%;
    padding: 0.3rem 0.64rem;
    background: color-mix(in srgb, var(--primary) 7%, transparent);
    border: 1px solid color-mix(in srgb, var(--primary) 16%, transparent);
    border-radius: 999px;
    color: var(--primary);
    font-size: 0.86rem;
    font-weight: 780;
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
    overflow-wrap: anywhere;
    text-align: right;
}

@media (max-width: 540px) {
    .densidad-form .cve-cat-banner:not([hidden]) {
        flex-direction: row;
        align-items: flex-start;
        justify-content: space-between;
        border-radius: calc(var(--radius-md, 10px) + 2px);
    }

    .densidad-form .cve-cat-banner__value {
        text-align: left;
    }
}


/* ==================================================================
 * PHASE 5 — Overlays (analysis progress + alert dialogs)
 *
 * Supersedes analysis-progress-alert / alert-dialog / alert-dialog__*
 * rules from lines 292–370, 744–900, 2724–2840, 5113–5170 of
 * calculadora-densidad.css.
 * ================================================================== */

/* ---- Analysis progress overlay (shown while running density analysis) ---- */

body:has(.densidad-form) #analysis-progress-overlay {
    background: rgba(26, 28, 28, 0.42);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

body:has(.densidad-form) #analysis-progress-overlay .progress-modal {
    background: var(--surface-container-lowest);
    box-shadow: 0 24px 64px rgba(26, 28, 28, 0.12);
}

.analysis-progress-alert {
    margin: 0;
    padding: 0;
    background: none;
    border: none;
    box-shadow: none;
}

.analysis-progress-alert[hidden] {
    display: none !important;
}

.analysis-progress-alert__label {
    margin: 0 0 1rem;
    min-height: 1.4em;
    color: var(--gray-900);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    transition: opacity 0.2s ease;
}

.analysis-progress-alert__track {
    position: relative;
    width: 100%;
    height: 8px;
    background: var(--gray-100);
    border-radius: 9999px;
    overflow: hidden;
}

.analysis-progress-alert__fill {
    position: relative;
    width: 0;
    height: 100%;
    border-radius: 9999px;
    overflow: hidden;
    transition: width 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

body:has(.densidad-form) #analysis-progress-overlay .analysis-progress-alert__fill {
    background: linear-gradient(90deg, var(--primary), var(--primary-container));
}

.analysis-progress-alert.is-error .analysis-progress-alert__fill {
    background: #dc2626;
}

.analysis-progress-alert__shimmer {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.35) 50%,
        transparent 100%);
    background-size: 200% 100%;
    animation: shimmerSweep 1.6s linear infinite;
}

@keyframes shimmerSweep {
    from { background-position: -200% 0; }
    to   { background-position:  200% 0; }
}

@media (prefers-reduced-motion: reduce) {
    .analysis-progress-alert__shimmer { animation: none; }
}

.analysis-progress-alert__phases {
    display: flex;
    justify-content: space-between;
    gap: 4px;
    margin-top: 0.875rem;
}

body:has(.densidad-form) #analysis-progress-overlay .analysis-phase-step.is-active {
    color: var(--primary);
    border-top-color: var(--primary);
}

body:has(.densidad-form) #analysis-progress-overlay .progress-modal__spinner-arc {
    stroke: var(--primary);
}

/* ---- Alert dialog (insufficient data / no-urbanizable / errors) ---- */

.densidad-form .alert-dialog-overlay,
body:has(.densidad-form) .alert-dialog-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: var(--space-6);
    background: rgba(26, 28, 28, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.densidad-form .alert-dialog-overlay.is-visible,
body:has(.densidad-form) .alert-dialog-overlay.is-visible {
    display: flex;
}

.densidad-form .alert-dialog,
body:has(.densidad-form) .alert-dialog {
    position: relative;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--surface-container-lowest);
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 64px rgba(26, 28, 28, 0.14);
    animation: dialogIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes dialogIn {
    from { opacity: 0; transform: scale(0.95) translateY(8px); }
    to   { opacity: 1; transform: scale(1)    translateY(0); }
}

.densidad-form .alert-dialog__close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1);
    background: none;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--gray-400);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease;
}

.densidad-form .alert-dialog__close:hover {
    color: var(--gray-700);
    background: var(--gray-100);
}

/* Accent header (severity stripe) */
.densidad-form .alert-dialog--warning .alert-dialog__accent,
.densidad-form .alert-dialog--error .alert-dialog__accent,
.densidad-form .alert-dialog--dv-denied .alert-dialog__accent {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1.5rem 1.125rem;
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.densidad-form .alert-dialog--warning .alert-dialog__accent { border-top: 3px solid #d97706; }
.densidad-form .alert-dialog--error   .alert-dialog__accent { border-top: 3px solid #b91c1c; }
.densidad-form .alert-dialog--dv-denied .alert-dialog__accent { border-top: 3px solid var(--density-maroon, #7a1234); }

.densidad-form .alert-dialog--dv-denied .alert-dialog__accent {
    padding: 1.35rem 1.5rem 1.2rem;
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.98), rgba(244, 230, 235, 0.38));
}

.densidad-form .alert-dialog--dv-denied .alert-dialog__body {
    display: grid;
    gap: 0.9rem;
    padding-top: 1.05rem;
}

.densidad-form .alert-dialog__status-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.85rem;
    align-items: start;
}

.densidad-form .alert-dialog__status-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 14px;
    background: color-mix(in srgb, var(--density-maroon, #7a1234) 12%, white 88%);
    color: var(--density-maroon, #7a1234);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--density-maroon, #7a1234) 18%, transparent);
}

/* Eyebrow kicker with severity dot */
.densidad-form .alert-dialog__kicker {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 0;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.densidad-form .alert-dialog--warning .alert-dialog__kicker { color: #b45309; }
.densidad-form .alert-dialog--error   .alert-dialog__kicker { color: #b91c1c; }
.densidad-form .alert-dialog--dv-denied .alert-dialog__kicker { color: var(--density-maroon, #7a1234); }

.densidad-form .alert-dialog--warning .alert-dialog__kicker::before,
.densidad-form .alert-dialog--error   .alert-dialog__kicker::before,
.densidad-form .alert-dialog--dv-denied .alert-dialog__kicker::before {
    content: "";
    display: inline-block;
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.densidad-form .alert-dialog--warning .alert-dialog__kicker::before { background: #d97706; }
.densidad-form .alert-dialog--error   .alert-dialog__kicker::before { background: #b91c1c; }
.densidad-form .alert-dialog--dv-denied .alert-dialog__kicker::before { background: var(--density-maroon, #7a1234); }

.densidad-form .alert-dialog--warning .alert-dialog__title,
.densidad-form .alert-dialog--error   .alert-dialog__title,
.densidad-form .alert-dialog--dv-denied .alert-dialog__title {
    margin: 0.2rem 0 0;
    color: var(--gray-900);
    font-size: 1.05rem;
    font-weight: 700;
}

.densidad-form .alert-dialog__accent-subtitle {
    margin: 0.5rem 0 0;
    color: var(--gray-500);
    font-size: 13px;
    line-height: 1.5;
}

.densidad-form .alert-dialog__body {
    padding: var(--space-6);
    color: var(--gray-700);
    font-size: 14px;
    line-height: 1.6;
}

.densidad-form .alert-dialog__body p { margin: 0 0 var(--space-4); }
.densidad-form .alert-dialog__body p:last-child { margin-bottom: 0; }

.densidad-form .alert-dialog__section-label {
    margin-bottom: 0.5rem;
    color: var(--gray-400);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.densidad-form .alert-dialog__detail-box {
    padding: var(--space-4);
    margin-top: var(--space-4);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-left: 3px solid var(--gray-300);
    border-radius: var(--radius-md);
    color: var(--gray-700);
    font-size: 13px;
}

.densidad-form .alert-dialog--warning .alert-dialog__detail-box { border-left-color: #f59e0b; }
.densidad-form .alert-dialog--error   .alert-dialog__detail-box { border-left-color: #dc2626; }
.densidad-form .alert-dialog--dv-denied .alert-dialog__detail-box {
    margin-top: 0;
    padding: 1rem 1.05rem;
    border-left-width: 4px;
    border-left-color: var(--density-maroon, #7a1234);
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.98), rgba(244, 230, 235, 0.42));
}

.densidad-form .alert-dialog--dv-denied .alert-dialog__detail-box .alert-dialog__section-label {
    margin-bottom: 0.75rem;
    color: color-mix(in srgb, var(--density-maroon, #7a1234) 72%, var(--gray-500) 28%);
}

.densidad-form .alert-dialog__detail-box--dv .alert-dialog__data-grid {
    grid-template-columns: minmax(8.25rem, auto) minmax(0, 1fr);
    gap: 0.58rem 1rem;
}

.densidad-form .alert-dialog__detail-box--dv .alert-dialog__data-grid span {
    min-width: 0;
}

.densidad-form .alert-dialog__detail-box--dv .alert-dialog__data-grid span:nth-child(even) {
    color: var(--density-ink, #202423);
    font-weight: 850;
}

.densidad-form .alert-dialog__detail-box--dv .alert-dialog__data-grid span:nth-child(4),
.densidad-form .alert-dialog__detail-box--dv .alert-dialog__data-grid span:nth-child(6) {
    color: var(--density-maroon, #7a1234);
}

.densidad-form .alert-dialog__next-step {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.82rem;
    align-items: start;
    padding: 1rem 1.05rem;
    border: 1px solid color-mix(in srgb, var(--density-teal, #1f665a) 24%, var(--gray-200));
    border-radius: var(--radius-md);
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.98), rgba(225, 239, 235, 0.5));
    color: var(--density-ink, #202423);
}

.densidad-form .alert-dialog__next-step-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--density-teal, #1f665a) 13%, white 87%);
    color: var(--density-teal, #1f665a);
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--density-teal, #1f665a) 22%, transparent);
}

.densidad-form .alert-dialog__next-step-label {
    margin-bottom: 0.28rem;
    color: var(--density-teal, #1f665a);
    font-size: 0.68rem;
    font-weight: 950;
    letter-spacing: 0.12em;
    line-height: 1;
    text-transform: uppercase;
}

.densidad-form .alert-dialog__next-step p {
    margin: 0;
    color: var(--density-ink, #202423);
    font-size: 0.92rem;
    line-height: 1.55;
}

.densidad-form .alert-dialog__detail-box strong {
    display: block;
    margin-bottom: var(--space-2);
    font-size: 0.9rem;
}

.densidad-form .alert-dialog__detail-box ul {
    margin: var(--space-2) 0 0;
    padding-left: var(--space-5);
    line-height: 1.8;
}

.densidad-form .alert-dialog__data-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-2) var(--space-4);
    font-size: 13px;
}

.densidad-form .alert-dialog__data-grid span:nth-child(odd) {
    color: var(--gray-600);
    font-weight: 600;
}

.densidad-form .alert-dialog__note {
    padding: var(--space-4);
    margin-top: var(--space-4);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    color: var(--gray-600);
    font-size: 13px;
    line-height: 1.6;
}

.densidad-form .alert-dialog__note-label {
    margin-bottom: var(--space-2);
    color: var(--gray-400);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.densidad-form .alert-dialog__footer {
    display: flex;
    justify-content: flex-end;
    padding: var(--space-4) var(--space-6);
    background: var(--surface-container);
    border-top: none;
}

.densidad-form .alert-dialog__btn-close {
    padding: 0.65rem 1.25rem;
    background: linear-gradient(145deg, var(--primary) 0%, var(--primary-container) 100%);
    color: #fffdfa;
    border: none;
    font-size: 13px;
    font-weight: 900;
    letter-spacing: 0.01em;
    cursor: pointer;
    box-shadow: 0 10px 24px -18px rgba(122, 18, 52, 0.75);
    transition: filter 0.15s ease, transform 0.12s var(--ease-spring);
}

.densidad-form .alert-dialog__btn-close:hover {
    filter: brightness(1.05);
}

.densidad-form .alert-dialog__btn-close:active {
    transform: translateY(1px);
}

.densidad-form .alta-plus-selector.is-invalid,
.densidad-form .alta-plus-custom-dv__input.is-invalid {
    border-color: var(--density-maroon, #7a1234) !important;
    background: color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 42%, white 58%);
    box-shadow:
        0 0 0 3px color-mix(in srgb, var(--density-maroon, #7a1234) 14%, transparent),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.densidad-form .alta-plus-custom-dv__input.is-invalid + .alta-plus-custom-dv__unit {
    border-color: var(--density-maroon, #7a1234);
    background: color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 60%, white 40%);
    color: var(--density-maroon, #7a1234);
}


/* ==================================================================
 * PHASE 6 — Form chrome (container, header, stepper, nav buttons)
 *
 * Supersedes densidad-form / densidad-header / progress-nav / progress-step
 * / btn / form-actions rules from lines 1181–1230, 2908–3100, 3309–3470
 * of calculadora-densidad.css.
 * ================================================================== */

/* ---- Outer container ---- */

.densidad-form,
.densidad-form.multi-step-form-container {
    --density-ink: #202423;
    --density-muted: #69716f;
    --density-subtle: #8a928f;
    --density-paper: #f6f3ef;
    --density-paper-deep: #ece7df;
    --density-surface: #fffdfa;
    --density-line: #ddd5cc;
    --density-line-strong: #cfc4b8;
    --density-maroon: #7a1234;
    --density-maroon-soft: #f4e6eb;
    --density-teal: #1f665a;
    --density-teal-soft: #e1efeb;
    --density-gold: #8b6a2f;
    --density-gold-soft: #f3ead7;
    --density-shadow: 0 28px 70px -42px rgba(45, 38, 30, 0.38);
    --density-focus: 0 0 0 4px rgba(122, 18, 52, 0.14);

    max-width: 1120px;
    margin: 0 auto;
    padding: clamp(1rem, 2.4vw, 2rem);
    background:
        linear-gradient(90deg, rgba(122, 18, 52, 0.055), transparent 22%, transparent 78%, rgba(31, 102, 90, 0.06)),
        var(--density-paper);
    color: var(--density-ink);
    font-family: "ITC Avant Garde Gothic STD Book", "Outfit", "Avenir Next", sans-serif;
}

.densidad-form *,
.densidad-form *::before,
.densidad-form *::after {
    box-sizing: border-box;
}

/* ---- Header ---- */

.densidad-form header.densidad-header {
    position: relative;
    overflow: hidden;
    padding: clamp(1.6rem, 4vw, 3.2rem);
    background:
        linear-gradient(135deg, rgba(255, 253, 250, 0.96), rgba(246, 243, 239, 0.92)),
        radial-gradient(circle at 86% 18%, rgba(31, 102, 90, 0.11), transparent 28%);
    border: 1px solid var(--density-line);
    border-bottom: 0;
    border-radius: 18px 18px 0 0;
    box-shadow: var(--density-shadow);
}

.densidad-form header.densidad-header::before,
.densidad-form header.densidad-header::after {
    content: none;
}

.densidad-form .densidad-header__back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    width: fit-content;
    margin-bottom: clamp(1.1rem, 3vw, 2rem);
    padding: 0.5rem 0.85rem;
    background: rgba(255, 253, 250, 0.72);
    color: var(--density-maroon);
    border: 1px solid rgba(122, 18, 52, 0.18);
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.densidad-form .densidad-header__back-link:hover {
    transform: translateX(-2px);
    border-color: color-mix(in srgb, var(--density-maroon) 38%, transparent);
    box-shadow: 0 8px 20px -14px color-mix(in srgb, var(--density-maroon) 65%, transparent);
}

.densidad-form .densidad-header__back-link:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--density-maroon) 30%, transparent);
    outline-offset: 2px;
}

.densidad-form .analysis-kicker,
.densidad-form .step-heading__eyebrow,
.densidad-form .alta-plus-section__eyebrow,
.densidad-form .pending-summary__eyebrow {
    display: inline-flex;
    color: var(--density-maroon);
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.densidad-form header.densidad-header h1 {
    margin: 0.45rem 0 0.55rem;
    color: var(--density-ink);
    font-size: clamp(2rem, 4.6vw, 4rem);
    font-weight: 900;
    line-height: 0.96;
    letter-spacing: -0.045em;
}

.densidad-form header.densidad-header p {
    max-width: 650px;
    color: var(--density-muted);
    font-size: clamp(0.96rem, 1.4vw, 1.08rem);
    line-height: 1.62;
}

/* ---- Step indicator (sticky glass strip) ---- */

.densidad-form .progress-nav {
    position: sticky;
    top: 0;
    z-index: 20;
    padding: 0.95rem clamp(1rem, 3vw, 2.5rem) 1rem;
    background: rgba(255, 253, 250, 0.9);
    border-inline: 1px solid var(--density-line);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.densidad-form .progress-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.65rem;
    margin: 0;
    padding: 0;
}

.densidad-form .progress-step {
    min-width: 0;
}

.densidad-form .step-button {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: flex-start;
    gap: 0.65rem;
    min-height: 48px;
    padding: 0.5rem 0.65rem;
    background: rgba(255, 253, 250, 0.72);
    color: var(--density-muted);
    border: 1px solid var(--density-line);
    border-radius: 12px;
    text-align: left;
    transition: transform 0.18s var(--ease-spring), border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.densidad-form .step-button:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--density-maroon) 30%, transparent);
    outline-offset: 2px;
}

.densidad-form .step-button:active:not(:disabled) {
    transform: translateY(1px) scale(0.99);
}

.densidad-form .step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--density-line);
    color: var(--density-muted);
    border: none;
    border-radius: 50%;
    font-weight: 900;
}

.densidad-form .progress-step.active .step-button {
    background: var(--density-maroon-soft);
    color: var(--density-maroon);
    border-color: rgba(122, 18, 52, 0.35);
}

.densidad-form .progress-step.active .step-number {
    background: var(--density-maroon);
    color: #fffdfa;
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--density-maroon) 22%, transparent);
}

.densidad-form .progress-step.active .step-title {
    color: var(--density-maroon);
    font-weight: 700;
}

.densidad-form .progress-step.completed .step-button {
    background: var(--density-teal-soft);
    color: var(--density-teal);
    border-color: rgba(31, 102, 90, 0.26);
}

.densidad-form .progress-step.completed .step-number {
    position: relative;
    background: var(--density-teal);
    color: transparent;
    border: 2px solid var(--density-teal);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--density-teal) 22%, transparent);
}

.densidad-form .progress-step.completed .step-number::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    height: 18px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23ffffff' stroke-width='3'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    transform: translate(-50%, -50%);
}

.densidad-form .progress-step.completed .step-title {
    color: var(--density-teal);
    font-weight: 700;
}

.densidad-form .progress-bar {
    height: 4px;
    background: var(--density-line);
    border-radius: 999px;
}

.densidad-form .progress-fill {
    background: linear-gradient(90deg, var(--density-maroon) 0%, var(--density-teal) 100%);
    border-radius: 999px;
}

/* ---- Form container panel (steps live inside) ---- */

.densidad-form .form-container.panel {
    padding: 2rem clamp(1rem, 3vw, 2.5rem) 2.25rem;
    margin-bottom: var(--space-8);
    background: var(--density-surface);
    border: 1px solid var(--density-line);
    border-top: none;
    border-radius: 0 0 18px 18px;
    box-shadow: var(--density-shadow);
}

.densidad-form .panel {
    background: var(--density-surface);
    border: none;
    box-shadow: none;
}

.densidad-form .form-step h2 {
    color: var(--density-maroon);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* ---- Sticky form actions bar (Anterior / Siguiente) ---- */

.densidad-form .form-actions {
    position: sticky;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 0.5rem);
    z-index: 40;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    flex-wrap: wrap;
    gap: 0.65rem 0.75rem;
    margin-top: 1.5rem;
    padding: 1rem clamp(0.85rem, 3vw, 1.35rem);
    background: rgba(255, 253, 250, 0.92);
    border: 1px solid color-mix(in srgb, var(--density-line) 80%, transparent);
    border-radius: calc(var(--radius-lg) + 2px);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 12px 32px -24px rgba(45, 38, 30, 0.32);
}

@media (max-width: 540px) {
    .densidad-form .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .densidad-form .form-actions .btn {
        width: 100%;
        min-width: 0;
    }
}

/* ---- Nav buttons (scoped to densidad-form) ---- */

.densidad-form .btn.btn-secondary {
    min-width: 90px;
    padding: 0.7rem 1.25rem;
    background: #fffdfa;
    color: var(--density-muted);
    border: 1px solid var(--density-line);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    transition:
        background 0.18s var(--ease-out),
        border-color 0.18s var(--ease-out),
        color 0.18s var(--ease-out),
        transform 0.12s var(--ease-spring),
        box-shadow 0.18s var(--ease-out);
}

.densidad-form .btn.btn-secondary:hover:not(:disabled) {
    background: var(--density-paper);
    border-color: var(--density-line-strong);
    color: var(--density-ink);
}

.densidad-form .btn.btn-secondary:active:not(:disabled) {
    transform: translateY(1px);
}

.densidad-form .btn.btn-primary {
    min-width: 90px;
    padding: 0.7rem 1.25rem;
    background: var(--density-maroon);
    color: #fffdfa;
    border: 1px solid var(--density-maroon);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    box-shadow: 0 10px 24px -18px rgba(122, 18, 52, 0.75);
    transition:
        background 0.18s var(--ease-out),
        border-color 0.18s var(--ease-out),
        transform 0.12s var(--ease-spring),
        box-shadow 0.18s var(--ease-out);
}

.densidad-form .btn.btn-primary:hover:not(:disabled) {
    background: color-mix(in srgb, var(--density-maroon) 92%, #000 8%);
    box-shadow: 0 14px 28px -18px rgba(122, 18, 52, 0.85);
}

.densidad-form .btn.btn-primary:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: 0 6px 14px -12px rgba(122, 18, 52, 0.7);
}

.densidad-form .btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ---- Step intro paragraphs ---- */

.densidad-form .densidad-step-intro {
    margin: 0 0 1.25rem;
    color: var(--density-muted);
    font-size: 0.92rem;
    line-height: 1.55;
}


/* ==================================================================
 * Jerarquía tipología — inline suffix next to acronym labels in the
 * Alta Plus pending card and the resolved Alta Plus / Base card.
 * Source: detalle_cards.densidad_urbana.principal.atributos.TIPOLOGIA_
 * ================================================================== */

.densidad-form .alta-plus-pendiente-acronimo__tipologia,
.densidad-form .alta-plus-card__acronym-tipologia {
    margin-left: 0.5rem;
    color: var(--density-muted, var(--on-surface-variant));
    font-size: 0.78em;
    font-weight: 600;
    letter-spacing: 0.01em;
    vertical-align: baseline;
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}


/* ==================================================================
 * Density scenario results — Base + Alta Plus summary cards
 * ================================================================== */

.densidad-form .action-section--alta-plus-results {
    display: none;
    margin-top: clamp(1.4rem, 3vw, 2.2rem);
    padding: clamp(1.35rem, 3vw, 1.75rem);
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 92%, transparent);
    border-radius: 18px;
    background:
        linear-gradient(
            180deg,
            color-mix(in srgb, var(--surface-container-lowest) 90%, white 10%) 0%,
            rgba(117, 13, 47, 0.035) 46%,
            color-mix(in srgb, var(--surface-container) 76%, white 24%) 100%
        );
    box-shadow:
        0 14px 32px -30px rgba(45, 38, 30, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.78);
}

.densidad-form .action-section--alta-plus-results.is-visible {
    display: block;
}

.densidad-form .action-section--alta-plus-results .alta-plus-section__header {
    position: relative;
    display: grid;
    gap: 0.45rem;
    margin-bottom: clamp(1rem, 2vw, 1.45rem);
    padding: 0;
    border: 0;
    background: transparent;
}

.densidad-form .action-section--alta-plus-results .alta-plus-section__eyebrow {
    color: color-mix(in srgb, var(--on-surface-variant) 78%, var(--primary) 22%);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.densidad-form .action-section--alta-plus-results .alta-plus-section__title {
    margin: 0;
    color: var(--primary, var(--density-maroon, #7a1234));
    font-size: clamp(1.16rem, 1.02rem + 0.48vw, 1.42rem);
    font-weight: 850;
    letter-spacing: -0.035em;
    line-height: 1.12;
}

.densidad-form .action-section--alta-plus-results .alta-plus-section__description {
    width: fit-content;
    max-width: none;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--on-surface-variant, var(--density-muted, #69716f));
    font-size: 13px;
    line-height: 1.6;
}

.densidad-form .alta-plus-results-list {
    display: grid;
    gap: clamp(1.2rem, 2.6vw, 1.7rem);
}

.densidad-form .density-scenario-card-shell {
    margin: 0;
}

.densidad-form .density-scenario-card {
    display: grid;
    gap: 0.9rem;
    padding: clamp(0.9rem, 2vw, 1.1rem);
    border: none;
    border-radius: calc(var(--radius-md, 10px) + 2px);
    background:
        linear-gradient(
            180deg,
            color-mix(in srgb, var(--surface-container-lowest) 96%, white 4%) 0%,
            color-mix(in srgb, var(--surface-container) 90%, white 10%) 100%
        );
    box-shadow:
        inset 0 0 0 1px rgba(224, 191, 191, 0.15),
        0 10px 16px -22px rgba(26, 28, 28, 0.24);
}

.densidad-form .density-scenario-card__header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.15rem 0.25rem 0;
}

.densidad-form .density-scenario-card__eyebrow {
    margin-bottom: 0.35rem;
    color: var(--density-muted, #69716f);
    font-size: 0.88rem;
    font-weight: 850;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.densidad-form .density-scenario-card__title {
    margin: 0;
    color: var(--density-ink, #202423);
    font-size: clamp(1rem, 0.92rem + 0.28vw, 1.16rem);
    font-weight: 760;
    letter-spacing: -0.035em;
    line-height: 1.12;
    text-wrap: balance;
}

.densidad-form .density-scenario-card__identity {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(0.8rem, 2vw, 1.25rem);
    padding: 0;
}

.densidad-form .density-scenario-card__identity-box {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 3.45rem;
    padding: 0.62rem 0.85rem;
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 86%, transparent);
    border-radius: 8px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 243, 239, 0.72));
    box-shadow:
        0 8px 18px -18px rgba(45, 38, 30, 0.36),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    overflow: visible;
}

.densidad-form .density-scenario-card__identity-box strong {
    color: var(--density-ink, #202423);
    font-size: clamp(1.14rem, 1rem + 0.48vw, 1.42rem);
    font-weight: 780;
    letter-spacing: -0.05em;
    line-height: 1;
}

.densidad-form .density-scenario-card__identity-box--accent strong {
    color: var(--density-maroon, #7a1234);
    max-width: 100%;
    font-size: clamp(1.02rem, 0.92rem + 0.34vw, 1.24rem);
    line-height: 1.12;
    overflow-wrap: anywhere;
    text-align: center;
}

.densidad-form .density-scenario-card__identity-box span {
    margin-top: 0.22rem;
    font-size: clamp(0.78rem, 0.72rem + 0.2vw, 0.9rem);
    font-weight: 450;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.densidad-form .density-scenario-card__identity-box .density-scenario-card__acronym-meaning {
    max-width: min(100%, 28rem);
    margin-top: 0.18rem;
    color: var(--density-maroon, #7a1234);
    font-size: clamp(0.72rem, 0.67rem + 0.16vw, 0.82rem);
    font-weight: 620;
    letter-spacing: 0;
    line-height: 1.25;
    overflow-wrap: anywhere;
    text-align: center;
}

.densidad-form .density-scenario-card__identity-label {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.28rem;
}

.densidad-form .density-scenario-card__info-button {
    width: 1.12rem;
    height: 1.12rem;
    min-width: 1.12rem;
    margin-left: 0.06rem;
}

.densidad-form .density-scenario-card__tooltip {
    left: 50%;
    top: calc(100% + 0.45rem);
    transform: translate(-50%, -4px);
    width: min(20rem, calc(100vw - 3rem));
    margin-top: 0;
    color: #ffffff;
    font-size: 0.74rem;
    font-weight: 760;
    letter-spacing: 0;
    line-height: 1.4;
    text-align: left;
}

.densidad-form .density-scenario-card__info-button:hover + .density-scenario-card__tooltip,
.densidad-form .density-scenario-card__info-button:focus-visible + .density-scenario-card__tooltip {
    opacity: 1;
    transform: translate(-50%, 0);
}

.densidad-form .density-scenario-card__features {
    display: grid;
    gap: 0.75rem;
    padding: 0.2rem 0 0.1rem;
}

.densidad-form .density-scenario-card__features-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    color: color-mix(in srgb, var(--density-ink, #202423) 78%, var(--density-muted, #69716f) 22%);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.densidad-form .density-scenario-card__features-title::before,
.densidad-form .density-scenario-card__features-title::after {
    content: "";
    flex: 0 1 8rem;
    height: 1px;
    background: color-mix(in srgb, var(--density-muted, #69716f) 46%, transparent);
}

.densidad-form .density-scenario-card__features-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    width: 100%;
    min-width: 100%;
    gap: 0;
    margin-top: 0;
    padding: 0.58rem 0;
    background: rgba(255, 255, 255, 0.34);
    color: var(--density-maroon, #7a1234);
    font-size: clamp(0.78rem, 0.74rem + 0.16vw, 0.88rem);
    line-height: 1.35;
}

.densidad-form .density-scenario-card__features-list span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    width: 100%;
    min-height: 1.5rem;
    padding: 0 0.85rem;
    text-align: center;
    text-wrap: balance;
}

.densidad-form .density-scenario-card__features-list span:not(:last-child) {
    border-right: 1px solid color-mix(in srgb, var(--density-ink, #202423) 34%, transparent);
}

.densidad-form .density-scenario-card-shell--plus .density-scenario-card__features-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.densidad-form .density-scenario-card-shell--plus .density-scenario-card__features-list span:last-child {
    color: var(--density-teal, #1f665a);
}

.densidad-form .density-scenario-card__metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.72rem;
    align-items: end;
    padding: 0;
    background: transparent;
    border: 0;
}

.densidad-form .density-scenario-card-shell--plus .density-scenario-card__metrics {
    grid-template-columns: minmax(0, 1fr);
}

.densidad-form .density-scenario-card-shell--base .density-scenario-card__metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.densidad-form .density-scenario-card__metrics .alta-plus-card__metric {
    min-height: auto;
    padding: 0.9rem 0.96rem 0.95rem;
    border: none;
    border-radius: calc(var(--radius-md, 10px) + 2px);
    background:
        linear-gradient(
            180deg,
            color-mix(in srgb, var(--surface-container-lowest) 96%, white 4%) 0%,
            color-mix(in srgb, var(--surface-container) 90%, white 10%) 100%
        );
    box-shadow:
        inset 0 0 0 1px rgba(224, 191, 191, 0.15),
        0 10px 16px -22px rgba(26, 28, 28, 0.24);
}

.densidad-form .density-scenario-card__metrics .alta-plus-card__metric:first-child {
    text-align: left;
}

.densidad-form .density-scenario-card__metrics .alta-plus-card__metric:last-child {
    text-align: right;
}

.densidad-form .density-scenario-card-shell--plus .density-scenario-card__metrics .alta-plus-card__metric {
    text-align: center;
}

.densidad-form .density-scenario-card-shell--base .density-scenario-card__metrics .alta-plus-card__metric:nth-child(2) {
    text-align: center;
}

.densidad-form .density-scenario-card__metrics .alta-plus-card__metric-label {
    color: var(--on-surface-variant, var(--density-muted, #69716f));
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.densidad-form .density-scenario-card__metrics .alta-plus-card__metric-value {
    margin-top: 0.3rem;
    color: var(--density-ink, #202423);
    font-size: clamp(1.28rem, 1.14rem + 0.28vw, 1.5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.045em;
    font-variant-numeric: tabular-nums;
}

.densidad-form .density-scenario-card__metrics .alta-plus-card__metric-note {
    color: var(--density-muted, #69716f);
    font-size: 0.78rem;
}

.densidad-form .density-scenario-card__result {
    display: grid;
    justify-items: center;
    gap: 0.38rem;
    margin: 0;
    padding: 0.95rem;
    border: none;
    border-radius: calc(var(--radius-md, 10px) + 2px);
    background:
        linear-gradient(
            180deg,
            color-mix(in srgb, var(--surface-container-lowest) 96%, white 4%) 0%,
            color-mix(in srgb, var(--surface-container) 90%, white 10%) 100%
        );
    box-shadow:
        inset 0 0 0 1px rgba(224, 191, 191, 0.15),
        0 10px 16px -22px rgba(26, 28, 28, 0.24);
}

.densidad-form .density-scenario-card__result-title {
    color: var(--density-maroon, #7a1234);
    font-size: clamp(1rem, 0.9rem + 0.32vw, 1.16rem);
    font-weight: 850;
    letter-spacing: -0.03em;
    line-height: 1;
}

.densidad-form .density-scenario-card__equation {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    justify-items: center;
    gap: clamp(0.85rem, 3vw, 1.5rem);
    width: min(100%, 34rem);
}

.densidad-form .density-scenario-card__equation--single {
    grid-template-columns: minmax(0, 1fr);
    width: min(100%, 18rem);
}

.densidad-form .density-scenario-card__equation-part {
    display: grid;
    justify-items: center;
    gap: 0.15rem;
    min-width: 0;
    text-align: center;
}

.densidad-form .density-scenario-card__equation-part strong {
    color: var(--density-ink, #202423);
    font-size: clamp(1.34rem, 1.2rem + 0.3vw, 1.58rem);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 0.98;
}

.densidad-form .density-scenario-card__equation-part span {
    max-width: 11rem;
    color: var(--density-muted, #69716f);
    font-size: 0.78rem;
    line-height: 1.18;
}

.densidad-form .density-scenario-card__equation-symbol {
    color: color-mix(in srgb, var(--density-ink, #202423) 82%, var(--density-muted, #69716f) 18%);
    font-size: clamp(1.28rem, 1.08rem + 0.5vw, 1.6rem);
    font-weight: 800;
    line-height: 1;
}

.densidad-form .density-scenario-card__formula {
    max-width: 100%;
    margin-top: 0.18rem;
    padding: 0.28rem 0.58rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--density-line, #ddd5cc) 32%, transparent);
    color: var(--density-muted, #69716f);
    font-size: 0.72rem;
    font-weight: 650;
    line-height: 1.25;
    overflow-wrap: anywhere;
    text-align: center;
}

.densidad-form .density-scenario-card .alta-plus-card__cobro-results {
    grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
}

.densidad-form .density-scenario-card .alta-plus-card__cobro-box--housing {
    border-color: color-mix(in srgb, var(--density-maroon, #8a1538) 18%, var(--density-line, #ddd5cc));
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(250, 247, 244, 0.9)),
        color-mix(in srgb, var(--density-maroon, #8a1538) 3%, transparent);
}

.densidad-form .density-scenario-card .alta-plus-card__cobro-box--no-label {
    padding-top: 0.95rem;
}

.densidad-form .density-scenario-card .alta-plus-card__cobro-box--no-label .alta-plus-card__cobro-value {
    margin-top: 0;
}

.densidad-form .density-scenario-card .alta-plus-card__cobro-box--housing .alta-plus-card__cobro-value {
    color: var(--density-maroon, #8a1538);
}

.densidad-form .density-scenario-card .alta-plus-card__formula-box--housing {
    margin-top: 0.65rem;
}

.densidad-form .density-scenario-card__condition {
    display: inline-flex;
    align-items: baseline;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.35rem 0.55rem;
    max-width: 100%;
    margin-top: 0.25rem;
    color: var(--density-muted, #69716f);
    font-size: 0.86rem;
    line-height: 1.35;
    text-align: center;
}

.densidad-form .density-scenario-card__condition span {
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.densidad-form .density-scenario-card__condition strong {
    color: var(--density-ink, #202423);
    font-weight: 750;
}

.densidad-form .density-scenario-card .alta-plus-card__densificacion-toggle {
    margin: 0;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.76);
}

.alta-plus-card__densificacion-toggle {
    width: 100%;
    margin: 1rem 1.2rem 0;
    padding: 1rem 1rem 1rem 1.05rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: calc(var(--radius-md) + 2px);
    background: linear-gradient(180deg, rgba(248, 250, 252, 0.92) 0%, rgba(255, 255, 255, 0.96) 100%);
    cursor: pointer;
    min-height: 56px;
    touch-action: manipulation;
    transition-property: transform, box-shadow, border-color, background-color;
    transition-duration: 200ms;
    transition-timing-function: cubic-bezier(0.2, 0, 0, 1);
}

.alta-plus-card__densificacion-toggle:hover {
    transform: translateY(-1px);
    border-color: rgba(100, 116, 139, 0.24);
    box-shadow: 0 18px 26px -24px rgba(15, 23, 42, 0.38);
}

.alta-plus-card__densificacion-toggle:active {
    transform: scale(0.96);
}

.alta-plus-card__densificacion-toggle:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 3px rgba(37, 99, 235, 0.1),
        0 18px 26px -24px rgba(15, 23, 42, 0.38);
}

.densidad-form .density-scenario-card .alta-plus-card__cobro-shell {
    margin: -0.3rem 0 0;
}

.densidad-form .density-scenario-card .tech-details--alta-plus {
    margin: 0;
    border-top: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 78%, transparent);
}

@media (max-width: 760px) {
    .densidad-form .action-section--alta-plus-results {
        padding: 1rem;
        border-radius: 14px;
    }

    .densidad-form .action-section--alta-plus-results .alta-plus-section__header {
        padding-left: 0;
    }

    .densidad-form .density-scenario-card__identity,
    .densidad-form .density-scenario-card__metrics,
    .densidad-form .density-scenario-card-shell--base .density-scenario-card__metrics {
        grid-template-columns: 1fr;
    }

    .densidad-form .density-scenario-card__metrics .alta-plus-card__metric,
    .densidad-form .density-scenario-card__metrics .alta-plus-card__metric:first-child,
    .densidad-form .density-scenario-card__metrics .alta-plus-card__metric:last-child,
    .densidad-form .density-scenario-card-shell--base .density-scenario-card__metrics .alta-plus-card__metric:nth-child(2) {
        text-align: center;
    }

    .densidad-form .density-scenario-card__features-title::before,
    .densidad-form .density-scenario-card__features-title::after {
        flex-basis: 3.25rem;
    }

    .densidad-form .density-scenario-card__features-list {
        display: grid;
        grid-template-columns: 1fr;
        justify-items: center;
        gap: 0.45rem;
        text-align: center;
    }

    .densidad-form .density-scenario-card__features-list span {
        display: block;
    }

    .densidad-form .density-scenario-card__features-list span:not(:last-child) {
        border-right: 0;
        border-bottom: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 70%, transparent);
        padding-bottom: 0.45rem;
    }

    .densidad-form .density-scenario-card__equation {
        grid-template-columns: 1fr;
        gap: 0.55rem;
    }

    .densidad-form .density-scenario-card__equation-symbol {
        font-size: 1.5rem;
    }
}

/* ---- Step 3 guidance and header spacing refinement ---- */

.densidad-form header.densidad-header h1 {
    max-width: min(920px, 100%);
    margin: 0.5rem 0 0.72rem;
    font-size: clamp(2.25rem, 4.35vw, 3.85rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
    text-wrap: balance;
}

.densidad-form header.densidad-header p {
    max-width: 680px;
    margin-top: 0;
}

.densidad-form .densidad-step-guidance {
    display: grid;
    grid-template-columns: minmax(220px, 0.42fr) minmax(0, 1fr);
    gap: clamp(1.05rem, 3vw, 2rem);
    align-items: start;
    max-width: 980px;
    margin: 0.55rem 0 1.4rem;
    padding: clamp(1rem, 2.4vw, 1.45rem);
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 82%, transparent);
    border-radius: 18px;
    background:
        linear-gradient(135deg, rgba(255, 253, 250, 0.98), rgba(246, 243, 239, 0.9)),
        radial-gradient(circle at 4% 0%, color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 72%, transparent), transparent 34%),
        color-mix(in srgb, var(--density-teal-soft, #e1efeb) 16%, transparent);
    box-shadow:
        0 22px 58px -48px rgba(45, 38, 30, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.densidad-form .densidad-step-guidance__header {
    display: grid;
    gap: 0.38rem;
    min-width: 0;
}

.densidad-form .densidad-step-guidance__eyebrow {
    color: var(--density-maroon, #7a1234);
    font-size: 0.66rem;
    font-weight: 900;
    letter-spacing: 0.13em;
    line-height: 1.2;
    text-transform: uppercase;
}

.densidad-form .densidad-step-guidance__title {
    margin: 0;
    max-width: 28ch;
    color: var(--density-ink, #202423);
    font-size: clamp(0.98rem, 1.5vw, 1.08rem);
    font-weight: 850;
    line-height: 1.22;
    letter-spacing: -0.018em;
}

.densidad-form .densidad-step-guidance__helper {
    max-width: 34ch;
    margin: 0.12rem 0 0;
    color: var(--density-muted, #69716f);
    font-size: 0.86rem;
    line-height: 1.45;
}

.densidad-form .densidad-step-guidance__list {
    position: relative;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: densidad-step-action;
}

.densidad-form .densidad-step-guidance__list::before {
    content: "";
    position: absolute;
    left: 1rem;
    top: 1rem;
    bottom: 1rem;
    width: 1px;
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--density-maroon, #7a1234) 28%, transparent),
        color-mix(in srgb, var(--density-teal, #1f665a) 30%, transparent)
    );
}

.densidad-form .densidad-step-guidance__list li {
    position: relative;
    display: grid;
    grid-template-columns: 2rem minmax(0, 1fr);
    align-items: center;
    gap: 0.85rem;
    min-width: 0;
    padding-block: 0.65rem;
    color: var(--density-ink, #202423);
    font-size: 0.94rem;
    line-height: 1.45;
}

.densidad-form .densidad-step-guidance__list li + li {
    margin-top: 0;
    padding-top: 0.65rem;
    border-top: 0;
}

.densidad-form .densidad-step-guidance__list li::before {
    content: counter(densidad-step-action);
    counter-increment: densidad-step-action;
    position: relative;
    z-index: 1;
    display: inline-grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    border: 1px solid color-mix(in srgb, var(--density-maroon, #7a1234) 34%, transparent);
    border-radius: 999px;
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.94), rgba(244, 230, 235, 0.92)),
        var(--density-maroon-soft, #f4e6eb);
    color: var(--density-maroon, #7a1234);
    box-shadow: 0 10px 24px -18px rgba(122, 18, 52, 0.55);
    font-size: 0.78rem;
    font-weight: 900;
    line-height: 1;
}

.densidad-form .densidad-step-guidance__text {
    position: relative;
    display: block;
    min-width: 0;
    padding: 0.68rem 0.8rem;
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 62%, transparent);
    border-radius: 12px;
    background: rgba(255, 253, 250, 0.62);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.54);
}

.densidad-form .densidad-step-guidance__text::after {
    content: "";
    position: absolute;
    right: 0.75rem;
    top: 50%;
    width: 0.34rem;
    height: 0.34rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--density-teal, #1f665a) 82%, white 18%);
    transform: translateY(-50%);
    opacity: 0.72;
}

@media (max-width: 760px) {
    .densidad-form header.densidad-header h1 {
        max-width: 100%;
        font-size: clamp(2rem, 12vw, 3rem);
        line-height: 1.06;
        letter-spacing: -0.035em;
    }

    .densidad-form .densidad-step-guidance {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .densidad-form .densidad-step-guidance__title,
    .densidad-form .densidad-step-guidance__helper {
        max-width: 100%;
    }

    .densidad-form .densidad-step-guidance__list li {
        grid-template-columns: 1.8rem minmax(0, 1fr);
        gap: 0.62rem;
        font-size: 0.88rem;
    }

    .densidad-form .densidad-step-guidance__list li::before {
        width: 1.8rem;
        height: 1.8rem;
    }

    .densidad-form .densidad-step-guidance__list::before {
        left: 0.9rem;
    }
}

@media (max-width: 420px) {
    .densidad-form .densidad-step-guidance {
        padding: 0.9rem;
    }

    .densidad-form .densidad-step-guidance__text {
        padding: 0.62rem 1.25rem 0.62rem 0.7rem;
    }

    .densidad-form .densidad-step-guidance__text::after {
        right: 0.55rem;
    }
}

/* ---- Post-analysis guidance modal + result reveal refinements ---- */

.density-guidance-modal[hidden] {
    display: none !important;
}

.density-guidance-modal {
    position: fixed;
    inset: 0;
    z-index: 1100;
    --guidance-step-stagger: 0.64s;
    --guidance-row-inspection: 0.34s;
    display: grid;
    place-items: center;
    padding: clamp(1rem, 4vw, 2rem);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
}

.density-guidance-modal.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.density-guidance-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 28, 28, 0.44);
    backdrop-filter: blur(9px);
    -webkit-backdrop-filter: blur(9px);
}

.density-guidance-modal__panel {
    position: relative;
    display: grid;
    grid-template-columns: minmax(210px, 0.42fr) minmax(0, 1fr);
    gap: clamp(1.1rem, 3vw, 2rem);
    width: min(900px, 100%);
    padding: clamp(1.1rem, 3vw, 1.75rem);
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 84%, transparent);
    border-radius: 22px;
    background:
        linear-gradient(135deg, rgba(255, 253, 250, 0.98), rgba(246, 243, 239, 0.9)),
        radial-gradient(circle at 0% 0%, color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 78%, transparent), transparent 35%),
        color-mix(in srgb, var(--density-teal-soft, #e1efeb) 16%, transparent);
    box-shadow:
        0 34px 90px -58px rgba(26, 28, 28, 0.72),
        inset 0 1px 0 rgba(255, 255, 255, 0.78);
    transform: translateY(12px) scale(0.985);
    transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

.density-guidance-modal.is-visible .density-guidance-modal__panel {
    transform: translateY(0) scale(1);
}

.density-guidance-modal__header {
    display: grid;
    align-content: start;
    gap: 0.45rem;
    min-width: 0;
}

.density-guidance-modal__eyebrow {
    color: var(--density-maroon, #7a1234);
    font-size: 0.68rem;
    font-weight: 900;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.density-guidance-modal__header h2 {
    margin: 0;
    color: var(--density-ink, #202423);
    font-size: clamp(1.08rem, 1.9vw, 1.38rem);
    font-weight: 850;
    line-height: 1.12;
    letter-spacing: -0.035em;
    text-wrap: balance;
}

.density-guidance-modal__header p {
    margin: 0.1rem 0 0;
    max-width: 34ch;
    color: var(--density-muted, #69716f);
    font-size: 0.9rem;
    line-height: 1.48;
}

.density-guidance-modal__steps {
    position: relative;
    display: grid;
    gap: 0.75rem;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: density-guidance-step;
}

.density-guidance-modal__steps::before {
    content: "";
    position: absolute;
    left: 1.05rem;
    top: 1rem;
    bottom: 1rem;
    width: 1px;
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--density-maroon, #7a1234) 30%, transparent),
        color-mix(in srgb, var(--density-teal, #1f665a) 34%, transparent)
    );
}

.density-guidance-modal__steps li {
    position: relative;
    display: grid;
    grid-template-columns: 2.1rem minmax(0, 1fr);
    align-items: center;
    gap: 0.8rem;
    min-width: 0;
    color: var(--density-ink, #202423);
    font-size: 0.95rem;
    line-height: 1.45;
    counter-increment: density-guidance-step;
}

.density-guidance-modal__steps li > span:last-child {
    display: block;
    min-width: 0;
    padding: 0.72rem 0.85rem;
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 62%, transparent);
    border-radius: 13px;
    background: rgba(255, 253, 250, 0.68);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.58);
}

.density-guidance-modal.is-visible .density-guidance-modal__steps li > span:last-child {
    animation: densityGuidanceRowReveal 0.42s ease both;
    animation-delay: calc(0.1s + (var(--step-index, 0) * var(--guidance-step-stagger)));
}

.density-guidance-modal__check {
    position: relative;
    z-index: 1;
    display: inline-grid;
    place-items: center;
    width: 2.1rem;
    height: 2.1rem;
    border: 1px solid color-mix(in srgb, var(--density-maroon, #7a1234) 30%, transparent);
    border-radius: 999px;
    background:
        linear-gradient(180deg, rgba(255, 253, 250, 0.96), rgba(244, 230, 235, 0.92)),
        var(--density-maroon-soft, #f4e6eb);
    color: var(--density-maroon, #7a1234);
    box-shadow: 0 12px 26px -20px rgba(122, 18, 52, 0.56);
}

.density-guidance-modal__check::before {
    content: counter(density-guidance-step);
    font-size: 0.78rem;
    font-weight: 900;
}

.density-guidance-modal__check::after {
    content: "";
    position: absolute;
    width: 0.72rem;
    height: 0.42rem;
    border-left: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    opacity: 0;
    transform: rotate(-45deg) scale(0.75);
}

.density-guidance-modal.is-visible .density-guidance-modal__steps li .density-guidance-modal__check::before {
    animation: densityGuidanceNumberOut 0.24s ease forwards;
    animation-delay: calc(0.44s + var(--guidance-row-inspection) + (var(--step-index, 0) * var(--guidance-step-stagger)));
}

.density-guidance-modal.is-visible .density-guidance-modal__steps li .density-guidance-modal__check::after {
    animation: densityGuidanceCheckIn 0.32s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: calc(0.54s + var(--guidance-row-inspection) + (var(--step-index, 0) * var(--guidance-step-stagger)));
}

.density-guidance-modal__steps li:nth-child(1) { --step-index: 0; }
.density-guidance-modal__steps li:nth-child(2) { --step-index: 1; }
.density-guidance-modal__steps li:nth-child(3) { --step-index: 2; }
.density-guidance-modal__steps li:nth-child(4) { --step-index: 3; }

@keyframes densityGuidanceNumberOut {
    to { opacity: 0; transform: scale(0.85); }
}

@keyframes densityGuidanceCheckIn {
    to { opacity: 1; transform: rotate(-45deg) scale(1); }
}

@keyframes densityGuidanceRowReveal {
    from {
        opacity: 0.58;
        transform: translateX(5px);
        border-color: color-mix(in srgb, var(--density-maroon, #7a1234) 20%, transparent);
        background: rgba(255, 253, 250, 0.48);
    }
    to {
        opacity: 1;
        transform: translateX(0);
        border-color: color-mix(in srgb, var(--density-line, #ddd5cc) 62%, transparent);
        background: rgba(255, 253, 250, 0.68);
    }
}

.density-guidance-modal__actions {
    grid-column: 2;
    display: flex;
    justify-content: flex-end;
    margin-top: -0.2rem;
    opacity: 0;
    transform: translateY(8px);
}

.density-guidance-modal.is-visible .density-guidance-modal__actions {
    animation: densityGuidanceActionsIn 0.36s cubic-bezier(0.16, 1, 0.3, 1) 3.05s forwards;
}

@keyframes densityGuidanceActionsIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.density-guidance-modal__button {
    min-width: 11rem;
}

.densidad-form .alta-plus-custom-dv__input.is-clamped {
    border-color: color-mix(in srgb, var(--density-teal, #1f665a) 52%, var(--density-line, #ddd5cc));
    box-shadow:
        0 0 0 3px color-mix(in srgb, var(--density-teal, #1f665a) 12%, transparent),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.densidad-form .alta-plus-custom-dv {
    gap: 0.55rem;
    margin-top: 0.55rem;
    padding: 0.72rem;
    border: 1px solid color-mix(in srgb, var(--density-line, #ddd5cc) 78%, transparent);
    border-radius: 12px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(246, 243, 239, 0.55));
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.82),
        0 12px 24px -24px rgba(45, 38, 30, 0.42);
}

.densidad-form .alta-plus-custom-dv__label {
    color: color-mix(in srgb, var(--density-maroon, #7a1234) 68%, var(--density-muted, #69716f) 32%);
    font-size: 0.68rem;
    letter-spacing: 0.13em;
}

.densidad-form .alta-plus-custom-dv__scope-hint {
    margin: -0.18rem 0 0.1rem;
    color: color-mix(in srgb, var(--density-ink, #202423) 66%, var(--density-muted, #69716f) 34%);
    font-size: 0.76rem;
    font-weight: 520;
    line-height: 1.42;
}

.densidad-form .alta-plus-custom-dv__field {
    min-height: 3rem;
}

.densidad-form .alta-plus-custom-dv__input {
    min-height: 3rem;
    padding-inline: 0.92rem;
    font-size: 0.96rem;
    line-height: 1.2;
}

.densidad-form .alta-plus-custom-dv__unit {
    min-width: 2.65rem;
    justify-content: center;
    padding: 0 0.85rem;
}

.densidad-form .alta-plus-custom-dv__hint {
    margin: 0.5rem 0 0;
    padding: 0.55rem 0.65rem;
    border: 1px solid color-mix(in srgb, var(--density-teal, #1f665a) 24%, transparent);
    border-radius: 9px;
    background: color-mix(in srgb, var(--density-teal-soft, #e1efeb) 72%, white 28%);
    color: var(--density-teal, #1f665a);
    font-size: 0.78rem;
    font-weight: 650;
    line-height: 1.35;
}

.densidad-form .alta-plus-custom-dv__hint[data-custom-dv-state="mismatch"] {
    border-color: color-mix(in srgb, var(--density-maroon, #7a1234) 26%, transparent);
    background: color-mix(in srgb, var(--density-maroon-soft, #f4e6eb) 74%, white 26%);
    color: var(--density-maroon, #7a1234);
}

.densidad-form .alta-plus-custom-dv__hint[hidden] {
    display: none !important;
}

.densidad-form .action-section--alta-plus {
    display: none;
}

.densidad-form .action-section--alta-plus.is-visible {
    display: block;
}

.densidad-form .action-section--alta-plus.is-visible,
.densidad-form .action-section--alta-plus-results.is-visible {
    animation: densitySectionReveal 0.34s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.densidad-form .density-scenario-card-shell {
    animation: densitySectionReveal 0.34s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: var(--alta-plus-delay, 0ms);
}

.densidad-form .alta-plus-result-group {
    display: grid;
    animation: densitySectionReveal 0.34s cubic-bezier(0.16, 1, 0.3, 1) both;
    animation-delay: var(--alta-plus-delay, 0ms);
}

.densidad-form .alta-plus-result-group .density-scenario-card-shell {
    animation-delay: 0ms;
}

.densidad-form .density-scenario-card__features-list,
.densidad-form .density-scenario-card-shell--plus .density-scenario-card__features-list {
    grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
}

@keyframes densitySectionReveal {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 760px) {
    .density-guidance-modal__panel {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .density-guidance-modal__actions {
        grid-column: 1;
    }

    .density-guidance-modal__button {
        width: 100%;
    }

    .density-guidance-modal__steps li {
        grid-template-columns: 1.9rem minmax(0, 1fr);
        gap: 0.62rem;
        font-size: 0.88rem;
    }

    .density-guidance-modal__check {
        width: 1.9rem;
        height: 1.9rem;
    }

    .density-guidance-modal__steps::before {
        left: 0.95rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .density-guidance-modal,
    .density-guidance-modal__panel,
    .density-guidance-modal__steps li > span:last-child,
    .density-guidance-modal__actions,
    .densidad-form .action-section--alta-plus.is-visible,
    .densidad-form .action-section--alta-plus-results.is-visible,
    .densidad-form .alta-plus-result-group,
    .densidad-form .density-scenario-card-shell {
        animation: none !important;
        transition: none !important;
        transform: none !important;
    }

    .density-guidance-modal__actions {
        opacity: 1;
    }

    .density-guidance-modal__check::before {
        opacity: 0;
    }

    .density-guidance-modal__check::after {
        opacity: 1;
        transform: rotate(-45deg) scale(1);
        animation: none !important;
    }
}