/* public/css/dashboard.css - Analytics, Learning Content & Management UI */

/* Analytics Metric Grid & Compact Cards */
.analytics-metric-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.9rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 1024px) {
    .analytics-metric-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.analytics-metric-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.85rem 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.9rem;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.analytics-metric-card:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.12);
}

.metric-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-surface-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.metric-value {
    font-size: 1.4rem;
    font-weight: 800;
    line-height: 1.15;
    color: var(--text-main);
}

.metric-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 0.15rem;
}

/* Students At Risk Card & Table */
.risk-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 700;
    background: rgba(244, 63, 94, 0.15);
    color: var(--accent-rose);
    border: 1px solid rgba(244, 63, 94, 0.3);
}

/* Material Content Viewer */
.material-viewer {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.material-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.hero-alert {
    display: flex;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.hero-alert.info {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.hero-alert .alert-icon {
    font-size: 1.8rem;
}

.hero-alert h4 {
    color: var(--accent-cyan);
    margin-bottom: 0.25rem;
}

.material-content h3 {
    font-size: 1.3rem;
    margin: 1.5rem 0 0.75rem 0;
    color: var(--accent-cyan);
}

.material-content p {
    font-size: 1.02rem;
    color: var(--text-main);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.code-card {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin: 1.25rem 0;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.code-card code {
    font-size: 1.2rem;
    color: var(--accent-cyan);
    font-weight: 700;
    display: block;
    margin: 0.5rem 0;
}

.code-card .card-caption {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.concept-list {
    margin-left: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.concept-list li {
    margin-bottom: 0.5rem;
}

.summary-box {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--primary-glow);
    border-radius: var(--radius-md);
    padding: 1.25rem 1.5rem;
    margin-top: 2rem;
}

.summary-box h4 {
    color: var(--primary-light);
    margin-bottom: 0.35rem;
}

/* Data Table Styling */
.table-responsive {
    overflow-x: auto;
    margin: 1.5rem 0;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th, .data-table td {
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.92rem;
}

.data-table th {
    background: var(--bg-surface-elevated);
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.78rem;
    letter-spacing: 0.05em;
}

.data-table tr:hover td {
    background: var(--bg-surface-elevated);
}

/* Badges for classes in table */
.badge.class-a { background: rgba(99, 102, 241, 0.2); color: var(--primary-light); padding: 0.2rem 0.5rem; border-radius: 4px; }
.badge.class-b { background: rgba(6, 182, 212, 0.2); color: var(--accent-cyan); padding: 0.2rem 0.5rem; border-radius: 4px; }
.badge.class-c { background: rgba(16, 185, 129, 0.2); color: var(--accent-emerald); padding: 0.2rem 0.5rem; border-radius: 4px; }

/* Chart Container */
.chart-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

.chart-box {
    width: 100%;
    height: 320px;
}

/* Quiz UI */
.quiz-player-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--card-shadow);
}

.quiz-question-box {
    margin: 1.5rem 0;
}

.quiz-options-list {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-top: 1.25rem;
}

.quiz-opt-item {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    transition: all var(--transition-fast);
}

.quiz-opt-item:hover {
    border-color: var(--primary-light);
    background: var(--bg-surface-elevated);
}

.quiz-opt-item.selected {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.15);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.2);
}

.quiz-opt-item.correct-ans {
    border-color: var(--accent-emerald);
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-emerald);
}

.quiz-opt-item.wrong-ans {
    border-color: var(--accent-rose);
    background: rgba(244, 63, 94, 0.15);
    color: var(--accent-rose);
}

.quiz-explanation-box {
    background: var(--bg-surface-elevated);
    border-left: 4px solid var(--accent-cyan);
    padding: 1rem 1.25rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin-top: 1rem;
    font-size: 0.92rem;
    color: var(--text-main);
}

/* Multimedia Learning Content (Video, Slides, Articles) */
.media-player-wrapper {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #0f172a;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    margin-bottom: 2rem;
}

.video-responsive-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: #000;
}

.video-responsive-container iframe,
.video-responsive-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.slide-responsive-container {
    position: relative;
    padding-bottom: 58%; /* 16:9 / Presentation Ratio */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    background: #1e293b;
    border: 1px solid var(--border-color);
}

.slide-responsive-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.media-source-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.article-ref-card {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    transition: all var(--transition-fast);
    margin-bottom: 1.5rem;
}

.article-ref-card:hover {
    border-color: var(--accent-cyan);
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.15);
}

/* User Management Advanced Responsive Table & Assignment Badges */
.user-assignment-box {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    background: var(--bg-surface-elevated);
    padding: 0.55rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.user-assignment-box:hover {
    border-color: var(--primary-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.assignment-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
}

.assignment-label {
    color: var(--text-muted);
    font-weight: 700;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    width: 48px;
    flex-shrink: 0;
}

.assignment-pills {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-wrap: wrap;
    flex: 1;
    min-width: 0;
}

.pill-subject {
    background: rgba(99, 102, 241, 0.12);
    color: var(--primary-light);
    font-weight: 600;
    font-size: 0.76rem;
    padding: 0.18rem 0.5rem;
    border-radius: 6px;
    border: 1px solid rgba(99, 102, 241, 0.25);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.pill-class {
    background: rgba(6, 182, 212, 0.12);
    color: var(--accent-cyan);
    font-weight: 600;
    font-size: 0.76rem;
    padding: 0.18rem 0.5rem;
    border-radius: 6px;
    border: 1px solid rgba(6, 182, 212, 0.25);
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.pill-count-more {
    background: var(--bg-surface);
    color: var(--text-muted);
    font-weight: 800;
    font-size: 0.7rem;
    padding: 0.18rem 0.45rem;
    border-radius: 6px;
    border: 1px dashed var(--border-color);
    white-space: nowrap;
    cursor: help;
}

.pill-student-class {
    background: rgba(16, 185, 129, 0.12);
    color: var(--accent-emerald);
    font-weight: 700;
    font-size: 0.82rem;
    padding: 0.25rem 0.65rem;
    border-radius: 8px;
    border: 1px solid rgba(16, 185, 129, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.pill-admin-access {
    background: rgba(168, 85, 247, 0.15);
    color: var(--accent-purple);
    font-weight: 700;
    font-size: 0.8rem;
    padding: 0.25rem 0.65rem;
    border-radius: 8px;
    border: 1px solid rgba(168, 85, 247, 0.3);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

/* =========================================================================
   RICH HTML MATERIAL AUTO-RESPONSIVE ENGINE (STUDENT & TEACHER VIEWS)
   ========================================================================= */
.material-rich-body {
    max-width: 100%;
    overflow-wrap: break-word;
    word-break: break-word;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-main);
    background: var(--bg-surface-elevated);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.material-rich-body * {
    max-width: 100%;
    box-sizing: border-box;
}

/* Typography & Headings */
.material-rich-body h1,
.material-rich-body h2,
.material-rich-body h3,
.material-rich-body h4,
.material-rich-body h5,
.material-rich-body h6 {
    color: var(--text-main);
    font-weight: 800;
    line-height: 1.35;
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
}

.material-rich-body h1:first-child,
.material-rich-body h2:first-child,
.material-rich-body h3:first-child {
    margin-top: 0;
}

.material-rich-body h1 {
    font-size: clamp(1.4rem, 4vw, 1.85rem);
    color: var(--primary-light);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.material-rich-body h2 {
    font-size: clamp(1.25rem, 3.5vw, 1.55rem);
    color: var(--accent-cyan);
}

.material-rich-body h3 {
    font-size: clamp(1.1rem, 3vw, 1.3rem);
}

.material-rich-body h4 {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
}

.material-rich-body p {
    margin-bottom: 1.15rem;
    line-height: 1.8;
    color: var(--text-main);
}

.material-rich-body p:last-child {
    margin-bottom: 0;
}

/* Responsive Images & Figures */
.material-rich-body img {
    max-width: 100% !important;
    height: auto !important;
    display: block;
    margin: 1.25rem auto;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    border: 1px solid var(--border-color);
    object-fit: contain;
}

.material-rich-body figure {
    margin: 1.5rem 0;
    text-align: center;
}

.material-rich-body figcaption {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Auto-Responsive HTML Tables */
.material-rich-body table {
    display: block;
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.material-rich-body table th,
.material-rich-body table td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    font-size: 0.92rem;
    line-height: 1.5;
    min-width: 100px;
    text-align: left;
}

.material-rich-body table th {
    background: var(--bg-surface-elevated);
    color: var(--text-main);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}

.material-rich-body table tr:nth-child(even) td {
    background: rgba(99, 102, 241, 0.03);
}

.material-rich-body table tr:hover td {
    background: rgba(99, 102, 241, 0.07);
}

/* Responsive Embeds, Iframes, & Videos */
.material-rich-body iframe,
.material-rich-body video,
.material-rich-body embed,
.material-rich-body object {
    max-width: 100% !important;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin: 1.25rem 0;
}

.material-rich-body iframe[src*="youtube.com"],
.material-rich-body iframe[src*="youtu.be"],
.material-rich-body iframe[src*="canva.com"],
.material-rich-body iframe[src*="docs.google.com"] {
    width: 100% !important;
    aspect-ratio: 16/9;
    height: auto !important;
    min-height: 220px;
}

/* Lists & Bullets */
.material-rich-body ul,
.material-rich-body ol {
    padding-left: 1.5rem;
    margin: 1rem 0 1.25rem 0;
}

.material-rich-body li {
    margin-bottom: 0.45rem;
    line-height: 1.7;
}

.material-rich-body li::marker {
    color: var(--primary-light);
    font-weight: bold;
}

/* Code & Preformatted Blocks */
.material-rich-body pre {
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    background: #090d16;
    color: #38bdf8;
    padding: 1.15rem 1.35rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 1.25rem 0;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.88rem;
    line-height: 1.6;
}

.material-rich-body code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.88em;
    background: rgba(99, 102, 241, 0.12);
    color: var(--accent-cyan);
    padding: 0.2rem 0.45rem;
    border-radius: 4px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.material-rich-body pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

/* Blockquotes & Callout Boxes */
.material-rich-body blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(99, 102, 241, 0.08);
    padding: 0.9rem 1.25rem;
    margin: 1.25rem 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
    color: var(--text-main);
}

.material-rich-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 2rem 0;
}

/* =========================================================================
   GADGET & MOBILE OPTIMIZATIONS FOR TEACHER & STUDENT DASHBOARDS
   ========================================================================= */
@media (max-width: 768px) {
    .material-rich-body {
        padding: 1rem 0.85rem !important;
        font-size: 0.92rem;
        line-height: 1.7;
    }

    .material-rich-body table th,
    .material-rich-body table td {
        padding: 0.55rem 0.75rem;
        font-size: 0.82rem;
    }

    .material-viewer {
        padding: 1.25rem 1rem !important;
    }

    /* Teacher live session setup bar responsive stack */
    .session-wizard-wrapper {
        flex-direction: column !important;
        align-items: stretch !important;
        width: 100% !important;
    }

    .session-wizard-item {
        width: 100% !important;
        min-width: 0 !important;
    }

    .session-wizard-item select,
    .session-wizard-item input,
    .session-wizard-item button {
        width: 100% !important;
        min-width: 0 !important;
    }

    /* Teacher topic row item responsive stacking */
    .topic-row-item {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: 0.85rem !important;
        padding: 1rem 0.85rem !important;
    }

    .topic-actions-group {
        display: grid !important;
        grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)) !important;
        gap: 0.4rem !important;
        width: 100% !important;
    }

    .topic-actions-group .btn {
        width: 100% !important;
        justify-content: center !important;
        padding: 0.45rem 0.65rem !important;
        font-size: 0.8rem !important;
    }

    /* Student quick action cards & tabs */
    .learning-step-tabs-bar {
        overflow-x: auto !important;
        flex-wrap: nowrap !important;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 6px !important;
    }

    .learning-tab-pill {
        flex: 0 0 auto !important;
        white-space: nowrap !important;
        padding: 0.5rem 0.85rem !important;
        font-size: 0.82rem !important;
    }
}

@media (max-width: 480px) {
    .material-rich-body {
        padding: 0.85rem 0.65rem !important;
    }

    .topic-actions-group {
        grid-template-columns: 1fr !important;
    }

    .topic-actions-group .btn {
        font-size: 0.78rem !important;
    }
}