/* app-dashboard-extras.css — parte 10 del split de styles-professional.css (2026-07-18).
   Stats heatmap, anillos radiales y dashboard 3D portal (overrides tardíos de home/stats).
   ORDEN DE CARGA OBLIGATORIO: app-base → header-nav → home → practice →
   browse → strokes → quiz → stats → enhancements → dashboard-extras.
   La cascada depende de este orden; no reordenar los <link>. */

/* ============================================================================
   7B. STATS HEATMAP & RADIAL RINGS
   ============================================================================ */
.stats-heatmap-card {
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    margin-bottom: 10px;
}

html[data-theme="light"] .stats-heatmap-card {
    background: rgba(255, 248, 240, 0.85);
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.05);
}

.stats-rings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 18px;
}

.stats-ring-card {
    background: rgba(30, 41, 59, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform var(--transition-fast) ease, box-shadow var(--transition-fast) ease;
    text-align: center;
}

html[data-theme="light"] .stats-ring-card {
    background: rgba(255, 248, 240, 0.85);
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 20px rgba(139, 0, 0, 0.03);
}

.stats-ring-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.ring-svg-container {
    position: relative;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ring-percent {
    position: absolute;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    font-family: var(--font-mono);
}

.ring-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 2px;
}

.ring-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}

.ring-count {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.ring-accuracy {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.ring-active-circle {
    transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Responsive rings adjustments */
@media (max-width: 900px) {
    .stats-rings-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 580px) {
    .stats-rings-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   17. DASHBOARD GRID & 3D PORTAL (MOBILE-FIRST + DESKTOP SCROLL-FREE)
   ============================================================================ */

/* --- Base styles (mobile-first) --- */
.dashboard-grid-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-bottom: 24px;
}

.dashboard-3d-portal {
    display: flex;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 12px;
    gap: 8px;
    min-height: 280px;
}

html[data-theme="dark"] .dashboard-3d-portal {
    background: rgba(15, 23, 42, 0.35);
    border-color: rgba(255, 255, 255, 0.06);
}

html[data-theme="light"] .dashboard-3d-portal {
    background: rgba(255, 255, 255, 0.6);
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.portal-badge {
    background: #c62828; /* darker red: white text ≈ 5.2:1 (WCAG AA) */
    color: white;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
    align-self: flex-start;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    flex-shrink: 0;
}

#matrix-3d-canvas {
    flex: 1;
    width: 100%;
    min-height: 200px;
    display: block;
    border-radius: var(--radius-md);
    outline: none;
    cursor: grab;
    background: transparent;
}

#matrix-3d-canvas:active {
    cursor: grabbing;
}

.portal-instructions {
    text-align: center;
    color: var(--text-dim);
    font-size: 0.7rem;
    opacity: 0.75;
    pointer-events: none;
    flex-shrink: 0;
}

.dashboard-action-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dashboard-subgrid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

/* 2 columns on tablet */
@media (min-width: 600px) {
    .dashboard-subgrid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Desktop: scroll-free layout --- */
@media (min-width: 992px) {
    .app-container {
        height: 100vh;
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .app-header {
        flex-shrink: 0;
    }

    .nav-container {
        flex-shrink: 0;
    }

    .app-footer {
        flex-shrink: 0;
        padding: 10px 20px !important;
        margin-top: 0 !important;
        font-size: 0.78rem;
    }

    .main-content {
        flex: 1;
        min-height: 0;
        overflow: hidden;
        padding: 10px 24px !important;
        display: flex;
        flex-direction: column;
    }

    .content-wrapper {
        flex: 1;
        min-height: 0;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .tab-panel {
        flex: 1;
        min-height: 0;
        overflow: hidden;
    }

    .tab-panel.active {
        display: flex !important;
        flex-direction: column;
        flex: 1;
        min-height: 0;
        overflow-y: auto !important;
    }

    #practice,
    #browse,
    #strokes-radicals,
    #quiz,
    #past-exams,
    #home,
    #culture-characters,
    #culture-medicine,
    #culture-opera,
    #culture-technology,
    #culture-clothing,
    #culture-arts,
    #videos,
    #memories,
    #etymology,
    #leaderboard,
    #stats,
    #tones-invaders,
    #word-linker,
    #hanzi-builder {
        overflow-y: auto !important;
    }

    /* 1. Inicio (Home Tab) */
    .dashboard-grid-container {
        display: grid;
        grid-template-columns: 40% 1fr;
        gap: 16px;
        flex: 1;
        min-height: 0;
        padding-bottom: 0;
    }

    .dashboard-3d-portal {
        min-height: 0;
        height: 100%;
        backdrop-filter: blur(12px);
        box-shadow: 0 4px 24px rgba(31, 38, 135, 0.06);
        justify-content: stretch;
    }

    #matrix-3d-canvas {
        min-height: 0;
        height: 100%;
    }

    .dashboard-action-panel {
        height: 100%;
        min-height: 0;
        overflow-y: auto;
    }

    .welcome-card {
        margin-bottom: 0 !important;
        padding: 12px 18px !important;
        flex-shrink: 0;
    }

    .dashboard-subgrid {
        grid-template-columns: repeat(2, 1fr);
        flex: 1;
        min-height: 0;
    }

    .dashboard-card {
        padding: 10px 14px !important;
        margin: 0 !important;
        min-height: 0;
        overflow: hidden;
    }

    /* 2. Evaluar (Quiz & Past Exams) */
    #quiz, #past-exams {
        justify-content: center;
        align-items: center;
    }

    .quiz-setup {
        width: 100%;
        max-width: 580px;
        margin: 0 auto !important;
        padding: 24px !important;
    }

    .quiz-setup h2,
    .quiz-results h2 {
        margin-bottom: 16px !important;
        font-size: 1.5rem !important;
    }

    .quiz-container {
        width: 100%;
        max-width: 680px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 10px;
        flex: 1;
        min-height: 0;
    }

    .quiz-header {
        margin-bottom: 8px !important;
        padding: 10px 16px !important;
        flex-shrink: 0;
    }

    .quiz-content {
        padding: 20px 24px !important;
        flex: 1;
        min-height: 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: 12px;
    }

    .question-text {
        margin-bottom: 12px !important;
        gap: 6px !important;
    }

    .quiz-option {
        padding: 10px 14px !important;
        font-size: 0.88rem !important;
    }

    .quiz-results {
        padding: 24px !important;
        max-width: 500px;
        width: 100%;
    }

    /* 3. Juegos (Snake & Matrix) */
    /* Snake layout/sizing vive en quantifier-snake-styles.css; las reglas
       legacy con !important capaban el canvas y rompían el tamaño del board. */

    #matrix {
        overflow: hidden !important;
    }

    .matrix-game-container {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding: 16px 24px;
        box-sizing: border-box;
        width: 100%;
        height: 100%;
        min-height: 0;
    }

    .matrix-grid-board {
        max-height: calc(100vh - 300px);
        overflow-y: auto;
    }

    /* 4. Progreso (Stats & Leaderboard) */
    #stats {
        overflow: hidden !important;
    }

    .stats-overview {
        display: flex;
        flex-direction: column;
        gap: 10px;
        min-height: 0;
        height: 100%;
        flex: 1;
    }

    .stats-empty-state {
        flex: 1;
        display: flex !important;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        margin-top: 0 !important;
    }

    .stats-overview h2 {
        margin: 0 !important;
        font-size: 1.3rem !important;
        flex-shrink: 0;
    }

    .stats-cards {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 10px;
        margin-bottom: 0 !important;
        flex-shrink: 0;
    }

    .stat-card {
        padding: 8px 10px !important;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        min-height: 70px;
    }

    .stat-card .stat-value {
        font-size: 1.25rem !important;
        margin-bottom: 2px !important;
    }

    .stat-card .stat-label {
        font-size: 0.75rem !important;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.02em;
        opacity: 0.85;
    }

    .stats-dashboard-row {
        flex: 1;
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 16px;
        min-height: 0;
    }

    .stats-heatmap-card {
        grid-column: span 3 !important;
    }

    .stats-heatmap-card, .stats-chart-card, .stats-achievements-card, .level-progress {
        padding: 16px !important;
        min-height: 0;
        display: flex;
        flex-direction: column;
    }

    .stats-achievements-grid {
        max-height: 140px;
        overflow-y: auto;
    }

    .level-progress {
        margin-top: 0 !important;
        padding: 16px !important;
    }

    #reset-stats {
        align-self: center !important;
        margin: 20px auto 10px auto !important;
        max-width: 280px;
        width: 100%;
        padding: 12px 24px !important;
        font-size: 0.95rem !important;
        font-weight: 600;
        border-radius: var(--radius-md, 12px) !important;
        box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
    }

    #leaderboard {
        overflow: hidden;
    }

    .leaderboard-section {
        height: 100%;
        display: flex;
        flex-direction: column;
        min-height: 0;
        gap: 10px;
    }

    .leaderboard-header {
        margin-bottom: 0 !important;
        flex-shrink: 0;
    }

    .leaderboard-title {
        font-size: 1.4rem !important;
        margin: 0 !important;
    }

    .leaderboard-subtitle {
        font-size: 0.8rem;
        margin: 2px 0 0 0 !important;
    }

    .leaderboard-controls {
        gap: 8px !important;
        margin-bottom: 0 !important;
        padding: 8px 12px !important;
        flex-shrink: 0;
    }

    .leaderboard-content {
        flex: 1;
        min-height: 0;
        overflow-y: auto;
    }
}

/* ── SRS Daily Loop Card ─────────────────────────────────────────── */
.srs-daily-card {
    padding: 16px 20px;
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(229,57,53,0.04) 100%);
    border: 1px solid rgba(229,57,53,0.25);
}

.srs-card-inner {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.srs-donut-wrap {
    position: relative;
    flex-shrink: 0;
    width: 52px;
    height: 52px;
}

.srs-count-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.srs-count {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.srs-text-block {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.srs-label {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary, var(--color-text));
}

.srs-sub {
    font-size: 0.72rem;
    color: var(--text-dim, var(--color-text-muted));
    margin: 0;
}

.srs-chips {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-top: 4px;
}

.srs-chip {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 20px;
    white-space: nowrap;
}

.srs-chip-due     { background: rgba(229, 57, 53, 0.12); color: var(--accent); }
.srs-chip-new     { background: rgba(59, 130, 246, 0.12); color: #3b82f6; }
.srs-chip-learned { background: rgba(16, 185, 129, 0.12); color: #10b981; }

.srs-start-btn {
    flex-shrink: 0;
    padding: 8px 18px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: opacity 0.15s ease, transform 0.15s ease;
    white-space: nowrap;
}

.srs-start-btn:hover  { opacity: 0.85; transform: translateY(-1px); }
.srs-start-btn:active { transform: scale(0.97); }

.srs-btn-primary {
    background: var(--accent);
    color: #1a1a1a; /* dark text on yellow accent: ≈ 11:1 (white was 1.53:1) */
    font-weight: 700;
}

.srs-btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1.5px solid var(--accent);
}

@media (max-width: 480px) {
    .srs-card-inner { flex-direction: column; align-items: flex-start; }
    .srs-start-btn  { width: 100%; text-align: center; }
}

/* ── Header streak enhancements ──────────────────────────────────── */
.header-streak-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    line-height: 1;
    color: var(--color-text-dim, #71717a);
    transition: color 0.3s ease, filter 0.3s ease, transform 0.3s ease;
}

.header-streak-icon svg {
    display: block;
    color: currentColor;
    stroke: currentColor;
}

#header-streak-stat.streak-active .header-streak-icon {
    color: var(--color-primary, #e53935);
    animation: streakPulse 2s ease-in-out infinite;
}

.hsk-icon {
    display: inline-block;
    vertical-align: -0.15em;
    stroke: currentColor;
    fill: none;
    flex-shrink: 0;
}

@keyframes streakPulse {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.15); }
}

.header-due-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 10px;
    background: var(--accent);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 800;
    line-height: 1;
    cursor: pointer;
    transition: transform 0.15s ease;
}

.header-due-badge:hover { transform: scale(1.1); }