/**
 * Copyright (c) 2026 DNA Genics, S.L. All rights reserved.
 *
 * Exclusive Admixture Explorer V3 - Filterable card-grid UI.
 * Featured hero + sticky filter bar + family-grouped card grid + mobile bottom-sheet.
 * Reuses the dark-theme `--exa-*` tokens declared by IndexExclusiveAdmixtureV2.css.
 */

/* ==========================================================================
   CONTAINER
   ========================================================================== */

.exa3-explorer {
    --exa3-radius: 16px;
    --exa3-radius-sm: 10px;
    --exa3-border: 1px solid rgba(168, 159, 145, 0.12);
    --exa3-border-strong: 1px solid rgba(168, 159, 145, 0.25);
    --exa3-bg: #14161A;
    --exa3-bg-soft: rgba(26, 28, 30, 0.85);
    --exa3-card-bg: linear-gradient(180deg, rgba(36, 32, 28, 0.65) 0%, rgba(20, 22, 26, 0.95) 100%);
    --exa3-card-border: 1px solid rgba(168, 159, 145, 0.14);
    --exa3-text: var(--exa-ivory, #F5F3EF);
    --exa3-text-soft: var(--exa-bone, #E8E4DC);
    --exa3-text-muted: var(--exa-sand, #A89F91);
    --exa3-amber: var(--exa-amber, #C4956A);
    --exa3-amber-dark: var(--exa-amber-dark, #8B6D4F);
    --exa3-success: #5dbf7a;
    --exa3-processing: #F59E0B;
    --exa3-locked: #C4956A;

    display: block;
    color: var(--exa3-text);
    font-family: var(--exa-font-body, 'Inter', sans-serif);
}

/* V3 renders sections immediately instead of fading content in during scroll. */
.exa-report .exa-animate,
.exa-report .exa-animate.exa-visible,
.exa-report .exa-animate-delay-1,
.exa-report .exa-animate-delay-2,
.exa-report .exa-animate-delay-3 {
    opacity: 1;
    transform: none;
    transition: none;
    transition-delay: 0s;
}

/* ==========================================================================
   FEATURED HERO
   ========================================================================== */

.exa3-featured {
    position: relative;
    border-radius: var(--exa3-radius);
    overflow: hidden;
    margin-bottom: 1.25rem;
    min-height: 280px;
    border: var(--exa3-border-strong);
    background: var(--exa3-bg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.exa3-featured-bg {
    position: absolute;
    inset: -20px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(10px) saturate(1.05);
    opacity: 0.4;
    transform: scale(1.08);
    transition: background-image 0.5s ease, opacity 0.4s ease;
}

.exa3-featured-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 13, 15, 0.85), rgba(13, 13, 15, 0.7) 50%, rgba(13, 13, 15, 0.92));
}

.exa3-featured-content {
    position: relative;
    z-index: 1;
    padding: 2rem 2.25rem;
    max-width: 720px;
}

.exa3-featured-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--exa3-amber);
    margin-bottom: 0.75rem;
}

.exa3-featured-title {
    font-family: var(--exa-font-display, 'Cormorant Garamond', serif);
    font-size: clamp(1.6rem, 2.4vw, 2.25rem);
    font-weight: 600;
    color: var(--exa3-text);
    margin: 0 0 0.5rem 0;
    line-height: 1.2;
}

.exa3-featured-desc {
    color: var(--exa3-text-soft);
    font-size: 0.95rem;
    line-height: 1.55;
    margin: 0 0 1rem 0;
}

.exa3-featured-desc p {
    margin: 0 0 0.45rem 0;
}

.exa3-featured-desc p:last-child {
    margin-bottom: 0;
}

.exa3-featured-desc h4 {
    font-size: 0.88rem;
    color: var(--exa3-amber);
    margin: 0.45rem 0 0.2rem 0;
}

.exa3-featured-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.exa3-featured-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
}

/* ==========================================================================
   COMPACT DISCOVERY STATUS
   ========================================================================== */

.exa3-status-strip {
    border: var(--exa3-border);
    border-radius: var(--exa3-radius);
    background: rgba(13, 13, 15, 0.72);
    padding: 0.8rem 1rem;
    margin-bottom: 1rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
}

.exa3-status-head {
    display: flex;
    flex-direction: column;
    min-width: 180px;
    gap: 0.1rem;
}

.exa3-status-title {
    font-size: 0.82rem;
    color: var(--exa3-text-soft);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
}

.exa3-status-subtitle {
    font-size: 0.72rem;
    color: var(--exa3-text-muted);
}

.exa3-status-metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(78px, 1fr));
    gap: 0.5rem;
    flex: 1;
}

.exa3-status-metric {
    border: 1px solid rgba(168, 159, 145, 0.16);
    border-radius: 10px;
    padding: 0.35rem 0.5rem;
    text-align: center;
    background: rgba(0, 0, 0, 0.2);
}

.exa3-status-value {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--exa3-text);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.exa3-status-label {
    display: block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--exa3-text-muted);
}

.exa3-status-note {
    margin: 0;
    width: 100%;
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.78rem;
    color: var(--exa3-text-soft);
    border-top: 1px dashed rgba(168, 159, 145, 0.16);
    padding-top: 0.55rem;
}

.exa3-status-note i {
    color: var(--exa3-processing);
}

/* ==========================================================================
   STICKY FILTER BAR
   ========================================================================== */

.exa3-filterbar {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(13, 13, 15, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: var(--exa3-border);
    border-radius: var(--exa3-radius);
    padding: 0.875rem 1rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.3);
}

.exa3-filterbar-row {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    flex-wrap: wrap;
}

.exa3-filterbar-row + .exa3-filterbar-row {
    margin-top: 0.625rem;
    padding-top: 0.625rem;
    border-top: 1px dashed rgba(168, 159, 145, 0.12);
}

.exa3-filterbar-spacer { flex: 1; }

/* Search */
.exa3-search {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1 1 240px;
    min-width: 200px;
    background: rgba(0, 0, 0, 0.3);
    border: var(--exa3-border);
    border-radius: 999px;
    padding: 0.45rem 0.75rem 0.45rem 0.875rem;
}

.exa3-search:focus-within {
    border-color: var(--exa3-amber);
    box-shadow: 0 0 0 3px rgba(196, 149, 106, 0.18);
}

.exa3-search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--exa3-text);
    font-size: 0.875rem;
}

.exa3-search-input::placeholder { color: var(--exa3-text-muted); opacity: 0.7; }

.exa3-search-clear {
    background: transparent;
    border: none;
    color: var(--exa3-text-muted);
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
}

.exa3-search-clear:hover { color: var(--exa3-amber); }

/* Sort */
.exa3-sort {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.exa3-sort-label {
    font-size: 0.75rem;
    color: var(--exa3-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin: 0;
}

.exa3-sort-select {
    background: rgba(0, 0, 0, 0.3);
    color: var(--exa3-text);
    border: var(--exa3-border);
    border-radius: 999px;
    padding: 0.45rem 0.875rem;
    font-size: 0.85rem;
    cursor: pointer;
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--exa3-text-muted) 50%),
                      linear-gradient(135deg, var(--exa3-text-muted) 50%, transparent 50%);
    background-position: calc(100% - 14px) center, calc(100% - 9px) center;
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    padding-right: 2rem;
}

.exa3-sort-select:focus { outline: none; border-color: var(--exa3-amber); }

/* Group toggle */
.exa3-toggle-group {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(0, 0, 0, 0.3);
    color: var(--exa3-text);
    border: var(--exa3-border);
    border-radius: 999px;
    padding: 0.45rem 0.875rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.exa3-toggle-group[aria-pressed="true"] {
    background: rgba(196, 149, 106, 0.15);
    border-color: rgba(196, 149, 106, 0.5);
    color: var(--exa3-amber);
}

.exa3-toggle-group:hover { border-color: var(--exa3-amber); }

/* Filterbar tail (counter + batch button) */
.exa3-filterbar-tail {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: auto;
    flex-wrap: wrap;
}

.exa3-result-count {
    font-size: 0.8rem;
    color: var(--exa3-text-muted);
    font-variant-numeric: tabular-nums;
}

.exa3-filterbar-chips { gap: 0.5rem 0.75rem; }

.exa3-chipgroup {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 4px;
    background: rgba(0, 0, 0, 0.25);
    padding: 3px;
    border-radius: 999px;
    border: var(--exa3-border);
}

.exa3-filter-divider {
    width: 1px;
    height: 22px;
    background: rgba(168, 159, 145, 0.18);
    align-self: center;
}

/* ==========================================================================
   CHIPS (filters + status badges)
   ========================================================================== */

.exa3-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: rgba(168, 159, 145, 0.1);
    color: var(--exa3-text-soft);
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    font-size: 0.72rem;
    font-weight: 500;
    line-height: 1.1;
    white-space: nowrap;
}

.exa3-chip strong { font-weight: 700; color: var(--exa3-amber); }

.exa3-chip--filter {
    background: transparent;
    color: var(--exa3-text-muted);
    cursor: pointer;
    transition: all 0.18s ease;
}

.exa3-chip--filter:hover {
    color: var(--exa3-text);
    background: rgba(168, 159, 145, 0.1);
}

.exa3-chip--filter.active {
    background: linear-gradient(135deg, var(--exa3-amber), var(--exa3-amber-dark));
    color: #1a1410;
    font-weight: 600;
}

.exa3-chip--filter:focus-visible { outline: 2px solid var(--exa3-amber); outline-offset: 2px; }

.exa3-chip--status { padding: 0.35rem 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }

.exa3-chip--ready    { background: rgba(74, 159, 110, 0.18); color: var(--exa3-success); border-color: rgba(74, 159, 110, 0.4); }
.exa3-chip--processing { background: rgba(245, 158, 11, 0.18); color: var(--exa3-processing); border-color: rgba(245, 158, 11, 0.4); }
.exa3-chip--pending  { background: rgba(168, 159, 145, 0.14); color: var(--exa3-text-muted); border-color: rgba(168, 159, 145, 0.3); }
.exa3-chip--locked   { background: rgba(196, 149, 106, 0.16); color: var(--exa3-locked); border-color: rgba(196, 149, 106, 0.4); }

/* ==========================================================================
   FAMILY DROPDOWN
   ========================================================================== */

.exa3-family-dropdown {
    position: relative;
    display: inline-block;
}

.exa3-family-trigger {
    cursor: pointer;
    background: rgba(0, 0, 0, 0.3);
    border: var(--exa3-border);
    color: var(--exa3-text-soft);
    font-weight: 500;
}

.exa3-family-trigger[aria-expanded="true"] {
    border-color: var(--exa3-amber);
    color: var(--exa3-amber);
}

.exa3-family-trigger.has-selection {
    background: rgba(196, 149, 106, 0.15);
    border-color: rgba(196, 149, 106, 0.5);
    color: var(--exa3-amber);
}

.exa3-family-count {
    background: var(--exa3-amber);
    color: #1a1410;
    border-radius: 999px;
    padding: 1px 7px;
    font-size: 0.65rem;
    font-weight: 700;
    margin-left: 0.25rem;
}

.exa3-family-caret {
    font-size: 0.65rem;
    margin-left: 0.25rem;
    transition: transform 0.2s ease;
}

.exa3-family-trigger[aria-expanded="true"] .exa3-family-caret { transform: rotate(180deg); }

.exa3-family-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    z-index: 30;
    min-width: 280px;
    max-height: 320px;
    overflow-y: auto;
    background: rgba(20, 22, 26, 0.98);
    backdrop-filter: blur(16px);
    border: var(--exa3-border-strong);
    border-radius: 12px;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
    padding: 0.5rem;
}

.exa3-family-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.625rem;
    border-radius: 6px;
    cursor: pointer;
    margin: 0;
    font-size: 0.85rem;
    color: var(--exa3-text-soft);
    transition: background 0.15s ease;
}

.exa3-family-option:hover { background: rgba(168, 159, 145, 0.08); }
.exa3-family-option input { accent-color: var(--exa3-amber); }
.exa3-family-name { flex: 1; }
.exa3-family-fc { font-size: 0.7rem; color: var(--exa3-text-muted); font-variant-numeric: tabular-nums; }

.exa3-family-actions {
    display: flex;
    justify-content: flex-end;
    border-top: 1px solid rgba(168, 159, 145, 0.1);
    padding: 0.5rem 0.25rem 0;
    margin-top: 0.25rem;
}

/* ==========================================================================
   GRID + GROUPS
   ========================================================================== */

.exa3-grid-wrap { position: relative; }

.exa3-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.exa3-group-header {
    grid-column: 1 / -1;
    position: sticky;
    top: 110px;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 0.875rem;
    background: rgba(13, 13, 15, 0.92);
    backdrop-filter: blur(10px);
    border: var(--exa3-border);
    border-radius: var(--exa3-radius-sm);
    font-family: var(--exa-font-display, serif);
    font-size: 1rem;
    font-weight: 600;
    color: var(--exa3-amber);
    cursor: pointer;
    user-select: none;
}

.exa3-group-header[aria-expanded="false"] .exa3-group-caret { transform: rotate(-90deg); }

.exa3-group-caret {
    font-size: 0.75rem;
    transition: transform 0.2s ease;
}

.exa3-group-count {
    margin-left: auto;
    font-family: var(--exa-font-body, sans-serif);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--exa3-text-muted);
    background: rgba(168, 159, 145, 0.1);
    padding: 2px 10px;
    border-radius: 999px;
}

.exa3-group-collapsed .exa3-card { display: none; }

/* ==========================================================================
   CARDS
   ========================================================================== */

.exa3-card {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
    padding: 1rem 1.125rem 1.125rem;
    background: var(--exa3-card-bg);
    border: var(--exa3-card-border);
    border-radius: var(--exa3-radius);
    cursor: pointer;
    text-align: left;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
}

.exa3-card:hover {
    transform: translateY(-3px);
    border-color: rgba(196, 149, 106, 0.35);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.45);
}

.exa3-card:focus-visible { outline: 2px solid var(--exa3-amber); outline-offset: 2px; }

.exa3-card.status-completed { border-left: 3px solid var(--exa3-success); }
.exa3-card.status-processing { border-left: 3px solid var(--exa3-processing); }
.exa3-card.status-locked { opacity: 0.85; }
.exa3-card.status-locked::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(196, 149, 106, 0.06) 100%);
    pointer-events: none;
}

.exa3-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.exa3-card-new {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: linear-gradient(135deg, var(--exa3-amber), var(--exa3-amber-dark));
    color: #1a1410;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.55rem;
    border-radius: 999px;
}

.exa3-card-title {
    font-family: var(--exa-font-display, serif);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--exa3-text);
    line-height: 1.25;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.exa3-card-title mark {
    background: rgba(196, 149, 106, 0.3);
    color: var(--exa3-amber);
    border-radius: 3px;
    padding: 0 2px;
}

.exa3-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.exa3-card-metaitem {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.7rem;
    color: var(--exa3-text-muted);
    background: rgba(168, 159, 145, 0.08);
    border-radius: 6px;
    padding: 0.18rem 0.5rem;
}

.exa3-card-metaitem strong { color: var(--exa3-amber); }

.exa3-card-desc {
    flex: 1;
    color: var(--exa3-text-soft);
    font-size: 0.83rem;
    line-height: 1.55;
    margin: 0;
    opacity: 0.88;
    max-height: 5.2rem;
    overflow: hidden;
}

.exa3-card-desc p {
    margin: 0 0 0.35rem 0;
}

.exa3-card-desc p:last-child {
    margin-bottom: 0;
}

.exa3-card-desc h4 {
    font-size: 0.76rem;
    color: var(--exa3-amber);
    margin: 0.3rem 0 0.15rem 0;
}

.exa3-card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.25rem;
}

.exa3-card-actions .exa3-btn { flex: 1; justify-content: center; }

/* Hidden cards via filtering */
.exa3-card[hidden] { display: none !important; }

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.exa3-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    border-radius: 8px;
    border: 1px solid transparent;
    font-size: 0.82rem;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.exa3-btn--ghost {
    background: transparent;
    border-color: rgba(168, 159, 145, 0.25);
    color: var(--exa3-text-muted);
}
.exa3-btn--ghost:hover {
    border-color: var(--exa3-amber);
    color: var(--exa3-amber);
    background: rgba(196, 149, 106, 0.08);
}

.exa3-btn--gold {
    background: linear-gradient(135deg, var(--exa3-amber), var(--exa3-amber-dark));
    color: #1a1410;
}
.exa3-btn--gold:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(196, 149, 106, 0.35);
    color: #1a1410;
    text-decoration: none;
}

.exa3-btn--success {
    background: linear-gradient(135deg, #4A9F6E, #3d8a5d);
    color: #fff;
}
.exa3-btn--success:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(74, 159, 110, 0.35);
    color: #fff;
    text-decoration: none;
}

.exa3-btn--processing {
    background: rgba(245, 158, 11, 0.18);
    color: var(--exa3-processing);
    border-color: rgba(245, 158, 11, 0.35);
    cursor: default;
}

.exa3-btn--mini {
    padding: 0.35rem 0.65rem;
    font-size: 0.72rem;
    background: transparent;
    color: var(--exa3-text-muted);
    border-color: rgba(168, 159, 145, 0.2);
}

.exa3-btn--mini:hover { color: var(--exa3-amber); border-color: var(--exa3-amber); }

.exa3-btn:focus-visible { outline: 2px solid var(--exa3-amber); outline-offset: 2px; }

/* Batch button */
.exa3-batch-btn {
    position: relative;
    overflow: hidden;
}

.exa3-batch-btn[disabled],
.exa3-batch-btn.processing {
    cursor: wait;
    opacity: 0.95;
}

.exa3-batch-btn.processing .exa3-batch-content { display: none; }
.exa3-batch-btn.processing .exa3-batch-progress { display: inline-flex !important; align-items: center; gap: 0.5rem; }

.exa3-batch-content { display: inline-flex; align-items: center; gap: 0.4rem; }
.exa3-batch-count { font-size: 0.75rem; opacity: 0.8; }

/* ==========================================================================
   EMPTY STATE
   ========================================================================== */

.exa3-empty {
    text-align: center;
    padding: 3rem 1.5rem;
    background: var(--exa3-bg-soft);
    border: 1px dashed rgba(168, 159, 145, 0.2);
    border-radius: var(--exa3-radius);
}

.exa3-empty-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(196, 149, 106, 0.12);
    color: var(--exa3-amber);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 0.875rem;
}

.exa3-empty h4 {
    font-family: var(--exa-font-display, serif);
    color: var(--exa3-text);
    font-size: 1.25rem;
    margin: 0 0 0.5rem 0;
}

.exa3-empty-active {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    justify-content: center;
    margin: 0.875rem 0;
}

.exa3-empty-active .exa3-chip {
    background: rgba(196, 149, 106, 0.12);
    color: var(--exa3-amber);
    border-color: rgba(196, 149, 106, 0.3);
}

/* ==========================================================================
   FOOTER STATS
   ========================================================================== */

.exa3-stats-footer {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
    padding: 0.875rem 1rem;
    border-top: var(--exa3-border);
    font-size: 0.8rem;
    color: var(--exa3-text-muted);
    flex-wrap: wrap;
}

.exa3-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.exa3-stat span:nth-of-type(1) {
    /* icon span - leave alone */
}

.exa3-stat .dna-icon { color: var(--exa3-text-muted); }

/* ==========================================================================
   MOBILE BOTTOM SHEET
   ========================================================================== */

.exa3-sheet {
    --exa3-radius: 16px;
    --exa3-radius-sm: 10px;
    --exa3-border: 1px solid rgba(168, 159, 145, 0.12);
    --exa3-border-strong: 1px solid rgba(168, 159, 145, 0.25);
    --exa3-bg: #14161A;
    --exa3-bg-soft: rgba(26, 28, 30, 0.85);
    --exa3-text: var(--exa-ivory, #F5F3EF);
    --exa3-text-soft: var(--exa-bone, #E8E4DC);
    --exa3-text-muted: var(--exa-sand, #A89F91);
    --exa3-amber: var(--exa-amber, #C4956A);
    --exa3-amber-dark: var(--exa-amber-dark, #8B6D4F);
    --exa3-success: #5dbf7a;
    --exa3-processing: #F59E0B;
    --exa3-locked: #C4956A;
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    z-index: 1400;
    pointer-events: none;
    display: none;
    color: var(--exa3-text);
    font-family: var(--exa-font-body, 'Inter', sans-serif);
}

html.exa3-sheet-open,
body.exa3-sheet-open {
    overflow: hidden;
    overscroll-behavior: none;
}

body.exa3-sheet-open .exa-bottom-nav {
    visibility: hidden;
    pointer-events: none;
}

.exa3-sheet.is-open {
    display: block;
    pointer-events: auto;
}

.exa3-sheet-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    transition: background 0.25s ease;
    pointer-events: none;
}

.exa3-sheet.is-open .exa3-sheet-backdrop {
    background: rgba(0, 0, 0, 0.6);
    pointer-events: auto;
}

.exa3-sheet-panel {
    position: absolute;
    background: linear-gradient(180deg, #1a1c1e 0%, #14161a 100%);
    color: var(--exa3-text);
    box-shadow: 0 -16px 48px rgba(0, 0, 0, 0.5);
    will-change: transform;
}

/* Desktop: slide-in drawer from right (per project's responsive modal standard) */
@media (min-width: 769px) {
    .exa3-sheet-panel {
        top: 0;
        right: 0;
        bottom: 0;
        width: min(560px, 50vw);
        height: 100vh;
        transform: translateX(100%);
        border-radius: 16px 0 0 16px;
        transition: transform 0.3s ease;
        display: flex;
        flex-direction: column;
    }
    .exa3-sheet.is-open .exa3-sheet-panel { transform: translateX(0); }
    .exa3-sheet-handle { display: none; }
}

/* Mobile: slide-up bottom sheet */
@media (max-width: 768px) {
    .exa3-sheet-panel {
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: min(90vh, calc(100vh - 24px));
        max-height: min(90vh, calc(100vh - 24px));
        height: min(90svh, calc(100svh - 24px));
        max-height: min(90svh, calc(100svh - 24px));
        height: min(90dvh, calc(100dvh - 24px));
        max-height: min(90dvh, calc(100dvh - 24px));
        transform: translateY(100%);
        border-radius: 24px 24px 0 0;
        transition: transform 0.3s ease;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }
    .exa3-sheet.is-open .exa3-sheet-panel { transform: translateY(0); }
    .exa3-sheet.is-dragging .exa3-sheet-panel { transition: none; }

    .exa3-sheet-handle {
        width: 44px;
        height: 4px;
        background: rgba(168, 159, 145, 0.4);
        border-radius: 4px;
        margin: 8px auto 4px;
        flex-shrink: 0;
        touch-action: none;
    }

    .exa3-sheet-actions {
        flex-direction: column;
        padding: 0.875rem 1.25rem calc(1rem + env(safe-area-inset-bottom));
        background: linear-gradient(180deg, rgba(20, 22, 26, 0.95) 0%, #14161A 50%);
        border-top: 1px solid rgba(196, 149, 106, 0.25);
        box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.4);
        position: sticky;
        bottom: 0;
        z-index: 2;
    }

    .exa3-sheet-actions .exa3-btn {
        width: 100%;
        flex: none;
        padding: 0.85rem 1rem;
        font-size: 0.95rem;
    }

    /* Visually prioritize the primary action (Calculate / View / Unlock) on mobile */
    .exa3-sheet-actions .exa3-btn--gold,
    .exa3-sheet-actions .exa3-btn--success,
    .exa3-sheet-actions .exa3-btn--processing {
        order: -1;
    }
}

.exa3-sheet-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    background: rgba(168, 159, 145, 0.1);
    border: none;
    color: var(--exa3-text-muted);
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.exa3-sheet-close:hover { color: var(--exa3-amber); background: rgba(196, 149, 106, 0.18); }

.exa3-sheet-body {
    padding: 1.25rem 1.25rem 0.5rem;
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    display: block;
    min-height: 0;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
}

.exa3-sheet-title {
    font-family: var(--exa-font-display, serif);
    font-size: 1.4rem;
    font-weight: 600;
    margin: 0.5rem 0;
    color: var(--exa3-text);
}

.exa3-sheet-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.875rem;
}

.exa3-sheet-desc {
    color: var(--exa3-text-soft);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.exa3-sheet-desc p { margin-bottom: 0.5rem; }
.exa3-sheet-desc h4 {
    font-size: 0.95rem;
    color: var(--exa3-amber);
    margin-top: 0.875rem;
    margin-bottom: 0.25rem;
}

.exa3-sheet-actions {
    display: flex;
    gap: 0.5rem;
    padding: 0.875rem 1.25rem 1rem;
    border-top: var(--exa3-border);
    background: rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
}

.exa3-sheet-actions .exa3-btn { flex: 1; padding: 0.7rem 1rem; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */

@media (max-width: 768px) {
    .exa3-featured { min-height: 220px; }
    .exa3-featured-content { padding: 1.25rem 1.25rem; }
    .exa3-featured-title { font-size: 1.4rem; }
    .exa3-featured-desc { -webkit-line-clamp: unset; }

    .exa3-status-strip {
        padding: 0.7rem 0.75rem;
        border-radius: 12px;
        gap: 0.5rem 0.65rem;
    }
    .exa3-status-head {
        min-width: 100%;
    }
    .exa3-status-metrics {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        width: 100%;
    }
    .exa3-status-metric {
        padding: 0.3rem 0.45rem;
    }

    .exa3-filterbar { padding: 0.75rem; border-radius: 12px; position: relative; top: auto; }
    .exa3-filterbar-row {
        align-items: stretch;
        gap: 0.55rem;
    }
    .exa3-filterbar-chips {
        flex-wrap: wrap;
        overflow-x: visible;
        scrollbar-width: none;
    }
    .exa3-filterbar-chips::-webkit-scrollbar { display: none; }
    .exa3-filter-divider { display: none; }
    .exa3-filterbar-tail {
        width: 100%;
        justify-content: space-between;
        margin-left: 0;
        gap: 0.5rem;
    }
    .exa3-chipgroup {
        flex: 1 1 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        scrollbar-width: none;
    }
    .exa3-chipgroup::-webkit-scrollbar { display: none; }
    .exa3-family-dropdown { display: none; }
    .exa3-result-count {
        width: 100%;
        text-align: center;
    }

    .exa3-grid { grid-template-columns: 1fr; gap: 0.625rem; }

    .exa3-card {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 0.35rem 0.6rem;
        align-items: center;
        padding: 0.7rem 2.25rem 0.7rem 0.85rem;
        border-radius: 12px;
        min-height: auto;
    }
    .exa3-card:hover {
        transform: none;
        box-shadow: none;
    }
    .exa3-card-head {
        grid-column: 1 / 3;
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 0.4rem;
    }
    .exa3-card-title {
        grid-column: 1 / 3;
        -webkit-line-clamp: 1;
        flex: none;
        font-size: 1rem;
        line-height: 1.2;
    }
    .exa3-card-desc { display: none; }
    .exa3-card-actions { display: none; }
    .exa3-card-meta {
        grid-column: 1 / 3;
        display: flex;
        gap: 0.3rem;
        overflow: hidden;
    }
    .exa3-card-metaitem {
        font-size: 0.68rem;
        padding: 0.16rem 0.45rem;
    }
    .exa3-card::after {
        content: '\203A';
        position: absolute;
        right: 0.85rem;
        top: 50%;
        transform: translateY(-50%);
        font-size: 1.5rem;
        color: var(--exa3-text-muted);
    }

    .exa3-group-header { display: none !important; }

    .exa3-batch-btn {
        position: static;
        width: 100%;
        padding: 0.75rem 1rem;
        box-shadow: none;
    }
}

/* ==========================================================================
   SEARCH HIGHLIGHT INSIDE TITLES
   ========================================================================== */

.exa3-card-title mark,
.exa3-featured-title mark {
    background: rgba(196, 149, 106, 0.28);
    color: inherit;
    padding: 0 2px;
    border-radius: 3px;
}

/* ==========================================================================
   ACCESSIBILITY: REDUCED MOTION
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .exa3-card,
    .exa3-btn,
    .exa3-chip--filter,
    .exa3-toggle-group,
    .exa3-family-caret,
    .exa3-sheet-panel,
    .exa3-sheet-backdrop,
    .exa3-featured-bg {
        transition: none !important;
        animation: none !important;
    }

    .exa3-card:hover { transform: none; }
    .exa3-btn--gold:hover, .exa3-btn--success:hover { transform: none; }
}

/* ==========================================================================
   PRINT
   ========================================================================== */

@media print {
    .exa3-explorer,
    .exa3-filterbar,
    .exa3-sheet,
    .exa3-batch-btn,
    .exa3-stats-footer { display: none !important; }
}