/**
 * Themed maths hub and quiz (private preview).
 */
:root {
    --tm-primary: #C90C0F;
    --tm-primary-dark: #8B0000;
    --tm-text: #1D1D1B;
    --tm-muted: #666;
    --tm-correct: #0a7c42;
    --tm-wrong: #c90c0f;
    --tm-bg: #f5f5f5;
}

body.tm-page {
    font-family: 'Rockwell', 'Rockwell Nova', Georgia, serif;
    color: var(--tm-text);
    line-height: 1.6;
    margin: 0;
    min-height: 100vh;
    background: var(--tm-bg);
}

.tm-container {
    width: min(920px, 94vw);
    margin: 0 auto;
    padding: 20px;
    box-sizing: border-box;
}

.tm-preview-banner {
    background: #1a1a1a;
    color: #fff;
    text-align: center;
    padding: 8px 16px;
    font-size: 0.875rem;
}

.tm-preview-banner strong {
    color: #ffb347;
}

.tm-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px 28px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    border-top: 4px solid var(--tm-primary);
    margin-bottom: 20px;
}

.tm-card h1 {
    color: var(--tm-primary);
    font-size: 1.6rem;
    margin: 0 0 8px;
}

.tm-card h2 {
    font-size: 1.15rem;
    margin: 0 0 8px;
}

.tm-muted {
    color: var(--tm-muted);
    font-size: 0.95rem;
}

.tm-field {
    margin-bottom: 18px;
}

.tm-field label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
}

.tm-field select {
    width: 100%;
    padding: 10px 12px;
    font: inherit;
    font-size: 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    background: #fff;
    color: var(--tm-text);
}

.tm-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 20px;
}

.tm-btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    font: inherit;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

.tm-btn-primary {
    background: var(--tm-primary);
    color: #fff;
}

.tm-btn-primary:hover {
    background: var(--tm-primary-dark);
    color: #fff;
}

.tm-btn-outline {
    background: #fff;
    color: var(--tm-primary);
    border: 2px solid var(--tm-primary);
}

.tm-btn-outline:hover {
    background: var(--tm-primary);
    color: #fff;
}

.tm-theme-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.tm-theme-card {
    border: 2px solid #e8e8e8;
    border-radius: 10px;
    padding: 18px;
    background: #fafafa;
}

.tm-theme-card--live {
    border-color: var(--tm-primary);
    background: #fff;
}

.tm-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 3px 8px;
    border-radius: 4px;
    background: #eee;
    color: #444;
    margin-bottom: 8px;
}

.tm-tag--live {
    background: #e8f5e9;
    color: #1b5e20;
}

.tm-tag--soon {
    background: #fff3e0;
    color: #e65100;
}

/* Quiz UI */
.tm-quiz-header {
    text-align: center;
    margin-bottom: 16px;
}

.tm-quiz-header h1 {
    color: var(--tm-primary);
    margin: 0 0 4px;
    font-size: 1.5rem;
}

.tm-progress {
    font-size: 0.95rem;
    color: var(--tm-muted);
}

.tm-question-text {
    font-size: 1.15rem;
    margin: 0 0 20px;
    line-height: 1.5;
}

.tm-options {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tm-options li {
    margin-bottom: 10px;
}

.tm-option-btn {
    width: 100%;
    text-align: left;
    padding: 14px 16px;
    font: inherit;
    font-size: 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    background: #fff;
    color: var(--tm-text);
    cursor: pointer;
}

.tm-option-btn:hover:not(:disabled) {
    border-color: var(--tm-primary);
}

.tm-option-btn.correct {
    border-color: var(--tm-correct);
    background: #e8f5e9;
    color: #1b5e20;
}

.tm-option-btn.wrong {
    border-color: var(--tm-wrong);
    background: #ffebee;
    color: #8b0000;
}

.tm-feedback {
    margin-top: 16px;
    padding: 14px;
    border-radius: 8px;
    background: #f9f9f9;
    border-left: 4px solid var(--tm-primary);
}

.tm-results-score {
    font-size: 2rem;
    font-weight: bold;
    color: var(--tm-primary);
    text-align: center;
    margin: 16px 0;
}

.tm-loading,
.tm-error {
    text-align: center;
    padding: 40px 20px;
    color: var(--tm-muted);
}

.tm-back {
    display: inline-block;
    margin-bottom: 16px;
    color: var(--tm-primary);
    text-decoration: none;
}

.tm-back:hover {
    text-decoration: underline;
}