/**
 * IRL Classroom Frontend Styles
 * For teacher dashboard classroom sessions interface
 */

/* Main Container */
.irl-classroom-frontend {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: #2c3338;
}

/* Session Cards */
.irl-classroom-frontend .session-card {
    background: white;
    padding: 30px;
    margin-bottom: 25px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Section Headers with Gradients */
.irl-classroom-frontend .section-header {
    background: linear-gradient(135deg, #2271b1 0%, #135e96 100%);
    color: white;
    padding: 15px 20px;
    margin: -30px -30px 25px -30px;
    border-radius: 8px 8px 0 0;
    font-size: 20px;
    font-weight: 600;
}

.irl-classroom-frontend .section-header.green {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
}

.irl-classroom-frontend .section-header.blue {
    background: linear-gradient(135deg, #2271b1 0%, #135e96 100%);
}

/* Warning Banner */
.irl-classroom-frontend .warning-banner {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 15px 20px;
    margin-bottom: 25px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.irl-classroom-frontend .warning-banner .icon {
    font-size: 24px;
    flex-shrink: 0;
}

.irl-classroom-frontend .warning-banner strong {
    color: #856404;
}

/* Buttons - Enlarged for accessibility */
.irl-classroom-frontend .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    background: #2271b1;
    color: white !important;
    text-decoration: none;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    min-height: 48px;
    transition: background 0.2s ease;
}

.irl-classroom-frontend .button:hover {
    background: #135e96;
}

.irl-classroom-frontend .button:disabled {
    background: #999;
    cursor: not-allowed;
}

.irl-classroom-frontend .button-secondary {
    background: #f0f0f1;
    color: #2c3338 !important;
    border: 1px solid #c3c4c7;
}

.irl-classroom-frontend .button-secondary:hover {
    background: #e0e0e1;
}

/* Form Elements - Enlarged for accessibility */
.irl-classroom-frontend input[type="text"],
.irl-classroom-frontend input[type="number"],
.irl-classroom-frontend select {
    padding: 12px 14px;
    border: 1px solid #8c8f94;
    border-radius: 6px;
    width: 100%;
    max-width: 500px;
    font-size: 16px; /* Prevents iOS zoom */
    min-height: 48px;
    transition: border-color 0.2s ease;
}

.irl-classroom-frontend input[type="text"]:focus,
.irl-classroom-frontend input[type="number"]:focus,
.irl-classroom-frontend select:focus {
    border-color: #2271b1;
    outline: none;
    box-shadow: 0 0 0 1px #2271b1;
}

.irl-classroom-frontend input[readonly] {
    background: #f6f7f7;
    cursor: default;
}

.irl-classroom-frontend label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
}

.irl-classroom-frontend label.required {
    color: #d63638;
}

.irl-classroom-frontend .form-row {
    margin-bottom: 20px;
}

.irl-classroom-frontend .form-help {
    font-size: 13px;
    color: #646970;
    margin: 5px 0 0 0;
    font-weight: 400;
}

.irl-classroom-frontend .form-help.required {
    color: #d63638;
    font-weight: 600;
}

/* Quiz Search Results */
.irl-classroom-frontend .quiz-results-container {
    border: 1px solid #ddd;
    max-height: 250px;
    overflow-y: auto;
    border-radius: 4px;
    margin-top: 10px;
    background: white;
}

.irl-classroom-frontend .quiz-result-item {
    padding: 12px 15px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f1;
    transition: background 0.2s ease;
}

.irl-classroom-frontend .quiz-result-item:last-child {
    border-bottom: none;
}

.irl-classroom-frontend .quiz-result-item:hover {
    background: #f6f7f7;
}

.irl-classroom-frontend .quiz-result-item strong {
    color: #2c3338;
    font-size: 14px;
}

/* Selected Quiz Box */
.irl-classroom-frontend .selected-quiz-box {
    padding: 12px 15px;
    background: #f0f7ff;
    border-left: 3px solid #2271b1;
    border-radius: 4px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.irl-classroom-frontend .selected-quiz-box strong {
    color: #2271b1;
}

/* Session Result Display */
.irl-classroom-frontend .session-result-card {
    border-left: 4px solid #28a745;
}

.irl-classroom-frontend .result-row {
    margin: 20px 0;
}

.irl-classroom-frontend .result-row strong {
    display: block;
    margin-bottom: 8px;
    color: #2c3338;
}

.irl-classroom-frontend .session-code {
    font-family: 'Courier New', monospace;
    font-size: 32px;
    font-weight: bold;
    letter-spacing: 3px;
    color: #28a745;
    text-align: center;
    padding: 15px;
    background: #f0fff4;
    border: 2px dashed #28a745;
    border-radius: 8px;
    margin: 20px 0;
}

.irl-classroom-frontend .url-display {
    display: flex;
    gap: 10px;
    align-items: center;
}

.irl-classroom-frontend .url-display input {
    flex: 1;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

/* Session History Table */
.irl-classroom-frontend table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    margin-top: 15px;
}

.irl-classroom-frontend table th,
.irl-classroom-frontend table td {
    padding: 14px 12px;
    text-align: left;
    border-bottom: 1px solid #f0f0f1;
}

.irl-classroom-frontend table th {
    background: #f9f9f9;
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    color: #646970;
    letter-spacing: 0.5px;
}

.irl-classroom-frontend table tbody tr {
    transition: background 0.2s ease;
}

.irl-classroom-frontend table tbody tr:hover {
    background: #f9f9f9;
}

.irl-classroom-frontend table td {
    font-size: 14px;
}

.irl-classroom-frontend table .session-code-cell {
    font-family: 'Courier New', monospace;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: #2271b1;
}

.irl-classroom-frontend table .label-cell {
    font-weight: 600;
    color: #2c3338;
}

.irl-classroom-frontend table .student-count {
    font-weight: 600;
    color: #28a745;
}

.irl-classroom-frontend table .student-count.zero {
    color: #999;
    font-weight: 400;
}

.irl-classroom-frontend table .actions-cell {
    white-space: nowrap;
}

.irl-classroom-frontend table .actions-cell .button,
.irl-classroom-frontend table .actions-cell .button-secondary {
    padding: 6px 12px;
    font-size: 13px;
    margin-right: 5px;
}

/* Empty State */
.irl-classroom-frontend .empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #646970;
}

.irl-classroom-frontend .empty-state p {
    font-size: 16px;
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .irl-classroom-frontend .session-card {
        padding: 20px;
    }

    .irl-classroom-frontend .section-header {
        margin: -20px -20px 20px -20px;
        font-size: 18px;
    }

    .irl-classroom-frontend table {
        font-size: 13px;
    }

    .irl-classroom-frontend table th,
    .irl-classroom-frontend table td {
        padding: 10px 8px;
    }

    .irl-classroom-frontend .url-display {
        flex-direction: column;
    }

    .irl-classroom-frontend .url-display input {
        max-width: 100%;
    }

    .irl-classroom-frontend .session-code {
        font-size: 24px;
        letter-spacing: 2px;
    }
}

/* Heatmap Visualization Styles */
.heatmap-transcript {
    font-size: 18px;
    line-height: 2.2;
    padding: 20px;
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 15px;
    font-family: Georgia, serif;
}

.word-box {
    display: inline-block;
    padding: 4px 8px;
    margin: 0 2px;
    border: 2px solid transparent;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: help;
}

.word-box:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* Ease color coding (ease = correct/total attempts) */
/* High ease = easy word (green), low ease = challenging word (red) */
.ease-high {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.ease-medium {
    background-color: #fff3cd;
    border-color: #ffc107;
    color: #856404;
}

.ease-low {
    background-color: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.unattempted {
    background-color: #e9ecef;
    border-color: #6c757d;
    color: #495057;
    border-style: dashed;
}

.word-visible {
    color: #333;
    font-weight: normal;
}

/* Heatmap Legend */
.heatmap-legend {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    padding: 10px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.legend-item .word-box {
    font-size: 12px;
    padding: 2px 6px;
}

/* Loading state */
.heatmap-loading {
    padding: 30px;
    text-align: center;
    color: #666;
}

/* Teacher heatmap overlay */
#heatmap-overlay {
    margin-top: 10px;
    max-height: 400px;
    overflow-y: auto;
}

#teacher-heatmap-container .heatmap-transcript {
    font-size: 16px;
}

/* ================================
   CREATE SESSION FORM - Visual Sectioning
   ================================ */
.irl-classroom-frontend .create-session-card {
    background: var(--global-palette7, #f8fafc);
    border: 2px solid var(--global-palette4, #e2e8f0);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
}

.irl-classroom-frontend .create-session-card .section-header {
    margin: -30px -30px 25px -30px;
    border-radius: 10px 10px 0 0;
}

/* Form Grid Layout */
.irl-classroom-frontend .form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .irl-classroom-frontend .form-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.irl-classroom-frontend .form-grid .form-row {
    margin-bottom: 0;
}

/* Create & Start Button - Green and Prominent */
.irl-classroom-frontend .create-session-btn {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
    color: white !important;
    min-height: 52px;
    font-size: 18px;
    font-weight: 700;
    padding: 14px 32px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
    transition: all 0.2s ease;
}

.irl-classroom-frontend .create-session-btn:hover {
    background: linear-gradient(135deg, #218838 0%, #1a6b2b 100%);
    box-shadow: 0 6px 16px rgba(40, 167, 69, 0.4);
    transform: translateY(-1px);
}

.irl-classroom-frontend .form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

/* ================================
   SESSION FILTERS
   ================================ */
.irl-classroom-frontend .session-filters {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    padding: 15px;
    background: #f9fafb;
    border-radius: 8px;
}

.irl-classroom-frontend .session-filters select {
    max-width: 180px;
    min-height: 44px;
}

.irl-classroom-frontend .session-filters label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    margin-bottom: 0;
    white-space: nowrap;
}

/* ================================
   SESSION STATUS BADGES
   ================================ */
.session-status-badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.session-status-badge.active {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.session-status-badge.completed {
    background: #e2e8f0;
    color: #4a5568;
    border: 1px solid #cbd5e0;
}

/* ================================
   QUICK LAUNCH BUTTON
   ================================ */
.irl-classroom-frontend .launch-btn {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%) !important;
    color: white !important;
    font-weight: 600;
    padding: 10px 20px;
    min-height: 44px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 6px rgba(40, 167, 69, 0.25);
}

.irl-classroom-frontend .launch-btn:hover {
    background: linear-gradient(135deg, #218838 0%, #1a6b2b 100%) !important;
    box-shadow: 0 4px 10px rgba(40, 167, 69, 0.35);
}

.irl-classroom-frontend table .actions-cell {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

/* Session Label in Table */
.irl-classroom-frontend .session-label {
    display: inline-block;
    padding: 3px 10px;
    background: #e2e8f0;
    color: #4a5568;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
    margin-left: 8px;
}

/* Student heatmap in admin */
.student-heatmap-container {
    margin-top: 15px;
    padding: 15px;
    background: #f5f5f5;
    border-left: 4px solid #0073aa;
}

.student-heatmap-toggle {
    margin: 10px 0;
}

/* Blank Position Analytics */
.blank-analytics-table {
    font-size: 14px;
}

.blank-analytics-table th {
    background: #f5f5f5;
    font-weight: 600;
    padding: 10px;
}

.blank-analytics-table td {
    padding: 10px;
}

.blank-analytics-table .context-display {
    font-family: Georgia, serif;
    font-size: 16px;
    line-height: 1.8;
    padding: 8px 0;
}

.blank-analytics-table .blank-word {
    color: #0073aa;
    font-weight: 600;
    background: #f0f6fc;
    padding: 3px 6px;
    border-radius: 3px;
    white-space: nowrap;
}

.blank-analytics-table tbody tr:hover {
    background: #f9f9f9;
}