:root {
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Dark Gemini palette */
    --color-bg: #0d0d0d;
    --color-surface: #1a1a1a;
    --color-surface-elevated: #202124;
    --color-text: #e8eaed;
    --color-text-secondary: #9aa0a6;
    --color-text-muted: #5f6368;
    --color-border: #3c4043;
    --color-border-light: #5f6368;

    --color-primary: #8ab4f8;
    --color-primary-dark: #669df6;
    --color-secondary: #81c995;
    --color-accent-1: #f28b82;
    --color-accent-2: #fdd663;
    --color-purple: #c58af9;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 80px rgba(59, 130, 246, 0.35), 0 0 160px rgba(37, 99, 235, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-xl: 32px;

    --gradient-logo: linear-gradient(90deg, #60a5fa, #818cf8, #c084fc);
    --gradient-glow: radial-gradient(circle at 50% 40%, rgba(37, 99, 235, 0.45) 0%, rgba(59, 130, 246, 0.2) 25%, rgba(139, 92, 246, 0.1) 45%, transparent 70%);
    --gradient-shine: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0) 50%, rgba(255,255,255,0.05) 100%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 90px;
}

/* === Gemini-style dark background === */
.hero-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: -3;
}

.hero-glow {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glow);
    z-index: -2;
    pointer-events: none;
    animation: glowPulse 8s ease-in-out infinite;
}

.hero-stars {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.15), transparent),
        radial-gradient(1px 1px at 50px 100px, rgba(255,255,255,0.1), transparent),
        radial-gradient(2px 2px at 80px 50px, rgba(255,255,255,0.12), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255,255,255,0.08), transparent),
        radial-gradient(2px 2px at 160px 120px, rgba(255,255,255,0.1), transparent);
    background-repeat: repeat;
    background-size: 200px 200px;
    opacity: 0.4;
    z-index: -2;
    pointer-events: none;
}

.hero-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 0%, transparent 0%, rgba(13,13,13,0.6) 60%, rgba(13,13,13,0.95) 100%);
    z-index: -1;
    pointer-events: none;
}

@keyframes glowPulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
}

/* === Header === */
.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 40px;
    position: relative;
    z-index: 10;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--gradient-logo);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--color-text);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-surface);
    border-color: var(--color-border-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-outline:hover {
    background: var(--color-surface);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text);
    border-color: var(--color-border-light);
}

/* === Hero section === */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: 40px 20px;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-text-secondary);
    margin-bottom: 48px;
    max-width: 600px;
}

/* === Prompt box Gemini-style === */
.prompt-container {
    width: 100%;
    max-width: 760px;
    margin: 0 auto 48px;
    position: relative;
}

/* Blue night glow behind search bar */
.prompt-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110%;
    height: 160%;
    background: var(--shadow-glow);
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.9;
    z-index: -1;
    pointer-events: none;
    animation: glowBreathe 6s ease-in-out infinite;
}

@keyframes glowBreathe {
    0%, 100% { opacity: 0.7; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.03); }
}

.prompt-box {
    background: rgba(26, 26, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: 24px 28px;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.08), var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: box-shadow 0.3s, transform 0.3s, border-color 0.3s;
    position: relative;
    overflow: hidden;
}

.prompt-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-shine);
    pointer-events: none;
}

.prompt-box:focus-within {
    box-shadow: 0 0 0 1px rgba(138, 180, 248, 0.3), 0 8px 40px rgba(59, 130, 246, 0.2);
    border-color: rgba(138, 180, 248, 0.3);
    transform: translateY(-2px);
}

.prompt-textarea {
    width: 100%;
    min-height: 90px;
    max-height: 220px;
    border: none;
    outline: none;
    font-family: var(--font-main);
    font-size: 1.15rem;
    color: var(--color-text);
    resize: none;
    background: transparent;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.prompt-textarea::placeholder {
    color: var(--color-text-muted);
}

.prompt-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 18px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    z-index: 1;
}

.prompt-options {
    display: flex;
    gap: 16px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.persona-selector {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.persona-selector label {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    white-space: nowrap;
}

.persona-selector select {
    flex: 1;
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.9rem;
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239aa0a6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 34px;
}

.prompt-hints {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.prompt-hint {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    padding: 5px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-generate {
    background: var(--gradient-logo);
    color: #ffffff;
    border: none;
    padding: 12px 24px;
    border-radius: 999px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 1;
}

.btn-generate:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 24px rgba(139, 92, 246, 0.4);
    filter: brightness(1.05);
}

.btn-generate:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    filter: grayscale(0.4);
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(13, 13, 13, 0.4);
    border-top-color: #0d0d0d;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: none;
}

.btn-generate.loading .spinner {
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Suggestions === */
.suggestions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    max-width: 850px;
    position: relative;
    z-index: 1;
}

.suggestion-chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 18px;
    border-radius: 999px;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.suggestion-chip:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
    border-color: rgba(138, 180, 248, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* === Quiz list === */
.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--color-text);
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 60px;
}

.quiz-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: hidden;
}

.quiz-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-border-light);
}

.quiz-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.quiz-card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    word-break: break-word;
    min-width: 0;
    flex: 1;
}

.quiz-card-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 8px;
    border-radius: 999px;
    color: #0d0d0d;
    max-width: 45%;
    text-align: center;
    line-height: 1.25;
    word-break: break-word;
    hyphens: auto;
    flex-shrink: 0;
}

.quiz-card-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    flex: 1;
}

.quiz-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    margin-top: auto;
}

.quiz-card-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.quiz-card-coach-badge {
    color: var(--color-primary);
    font-weight: 600;
}

/* === Page containers === */
.page-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.page-header {
    margin-bottom: 32px;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.page-meta {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* === Quiz play === */
.quiz-player {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.quiz-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    margin: 0 16px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 999px;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(138, 180, 248, 0.4);
}

.question-count {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.timer {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
    min-width: 70px;
    text-align: center;
    letter-spacing: 0.5px;
}

.timer-danger {
    animation: pulseRed 1s ease-in-out infinite;
}

@keyframes pulseRed {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.question-text {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 24px;
    line-height: 1.4;
    color: var(--color-text);
}

.answers-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.answer-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
    color: var(--color-text);
}

.answer-option:hover {
    border-color: var(--color-primary);
    background: rgba(138, 180, 248, 0.08);
}

.answer-option.selected {
    border-color: var(--color-primary);
    background: rgba(138, 180, 248, 0.12);
}

.answer-option.correct {
    border-color: var(--color-secondary);
    background: rgba(129, 201, 149, 0.12);
}

.answer-option.incorrect {
    border-color: var(--color-accent-1);
    background: rgba(242, 139, 130, 0.12);
}

.answer-letter {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.quiz-navigation {
    display: flex;
    justify-content: flex-start;
    gap: 12px;
    margin-top: 32px;
}

.quiz-navigation #next-btn,
.quiz-navigation #finish-btn {
    margin-left: auto;
}

.explanation-box {
    margin-top: 24px;
    padding: 18px;
    background: rgba(138, 180, 248, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-primary);
    color: var(--color-text);
}

.explanation-title {
    font-weight: 600;
    margin-bottom: 6px;
}

/* === Coach card === */
.coach-card {
    display: flex;
    align-items: center;
    gap: 18px;
    background: linear-gradient(135deg, rgba(138, 180, 248, 0.12) 0%, rgba(192, 132, 252, 0.08) 100%);
    border: 1px solid rgba(138, 180, 248, 0.25);
    border-radius: var(--radius-lg);
    padding: 22px 26px;
    margin-top: 28px;
    text-decoration: none;
    color: var(--color-text);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    box-shadow: 0 4px 20px rgba(138, 180, 248, 0.12);
}

.coach-card:hover {
    transform: translateY(-2px);
    border-color: rgba(138, 180, 248, 0.5);
    box-shadow: 0 8px 32px rgba(138, 180, 248, 0.22);
}

.coach-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(138, 180, 248, 0.18);
    display: grid;
    place-items: center;
    font-size: 1.8rem;
    flex-shrink: 0;
}

.coach-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.coach-title {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.coach-badge {
    display: inline-block;
    background: linear-gradient(90deg, #f28b82, #fdd663);
    color: #1a1a1a;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.coach-desc {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.coach-arrow {
    font-size: 1.5rem;
    color: var(--color-primary);
    font-weight: 700;
    flex-shrink: 0;
}

/* === Home coach banner === */
.home-coach-banner {
    display: flex;
    align-items: center;
    gap: 22px;
    background: linear-gradient(135deg, rgba(138, 180, 248, 0.14) 0%, rgba(192, 132, 252, 0.1) 100%);
    border: 1px solid rgba(138, 180, 248, 0.3);
    border-radius: var(--radius-lg);
    padding: 26px 30px;
    text-decoration: none;
    color: var(--color-text);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    box-shadow: 0 6px 28px rgba(138, 180, 248, 0.14);
}

.home-coach-banner:hover {
    transform: translateY(-2px);
    border-color: rgba(138, 180, 248, 0.55);
    box-shadow: 0 10px 40px rgba(138, 180, 248, 0.24);
}

.home-coach-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(138, 180, 248, 0.18);
    display: grid;
    place-items: center;
    font-size: 2rem;
    flex-shrink: 0;
}

.home-coach-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.home-coach-title {
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.home-coach-badge {
    display: inline-block;
    background: linear-gradient(90deg, #f28b82, #fdd663);
    color: #1a1a1a;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.home-coach-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    max-width: 620px;
}

.home-coach-arrow {
    font-size: 1.8rem;
    color: var(--color-primary);
    font-weight: 700;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .home-coach-banner {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .home-coach-title {
        justify-content: center;
    }
}

/* === Results page === */
.result-card {
    text-align: center;
    padding: 48px 32px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
}

.score-circle {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: var(--gradient-logo);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 32px;
    color: #ffffff;
    font-size: 2.5rem;
    font-weight: 700;
    box-shadow: 0 0 30px rgba(139, 92, 246, 0.3), var(--shadow-md);
}

.result-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.result-desc {
    color: var(--color-text-secondary);
    margin-bottom: 32px;
}

.result-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* === Error / info messages === */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-weight: 500;
}

.warning-center {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 9999;
    max-width: 420px;
    width: calc(100% - 32px);
    text-align: center;
    box-shadow: 0 0 40px rgba(239, 68, 68, 0.35);
    animation: warningPop 0.35s ease;
}

@keyframes warningPop {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

.alert-error {
    background: rgba(242, 139, 130, 0.12);
    color: #f28b82;
    border: 1px solid rgba(242, 139, 130, 0.3);
}

.alert-info {
    background: rgba(138, 180, 248, 0.1);
    color: #8ab4f8;
    border: 1px solid rgba(138, 180, 248, 0.2);
}

/* === Loading overlay === */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    flex-direction: column;
    gap: 16px;
}

.loading-overlay.active {
    display: flex;
}

.loading-text {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* === Utility === */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 32px;
}

.mb-2 {
    margin-bottom: 16px;
}

/* === Responsive === */
@media (max-width: 768px) {
    .site-header {
        padding: 16px 20px;
    }

    .nav-links {
        gap: 12px;
    }

    .hero {
        min-height: calc(100vh - 70px);
    }

    .prompt-box {
        padding: 18px 20px;
        border-radius: var(--radius-lg);
    }

    .prompt-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .btn-generate {
        width: 100%;
        justify-content: center;
    }

    .quiz-grid {
        grid-template-columns: 1fr;
    }

    .quiz-player {
        padding: 20px;
    }
}

/* === Auth pages === */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: 40px 20px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.auth-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    text-align: center;
    color: var(--color-text);
}

.auth-subtitle {
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: 32px;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-input {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: rgba(255, 255, 255, 0.04);
    color: var(--color-text);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(138, 180, 248, 0.15);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

select.form-input {
    cursor: pointer;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.form-error {
    font-size: 0.85rem;
    color: #f28b82;
    min-height: 1.2em;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.form-checkbox input {
    accent-color: var(--color-primary);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.auth-footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* === User menu in header === */
.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--gradient-logo);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.user-name {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.9rem;
}

.dropdown {
    position: relative;
    padding: 8px 0;
    cursor: pointer;
}

.dropdown-content {
    display: block;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 4px;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    min-width: 200px;
    z-index: 100;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
}

.dropdown:hover .dropdown-content,
.dropdown:focus-within .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown::after {
    content: '';
    position: absolute;
    top: 0;
    left: -12px;
    right: -12px;
    bottom: -40px;
    z-index: -1;
}

.dropdown-content a {
    display: block;
    padding: 12px 16px;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.dropdown-content a:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* === Page layouts === */
.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 80px;
    position: relative;
    z-index: 2;
}

.page-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--gradient-logo);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
}

.section-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 16px;
    flex-wrap: wrap;
}

/* === Classroom pages === */
.classroom-header {
    margin-bottom: 32px;
}

.classroom-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.classroom-code {
    font-family: 'SFMono-Regular', Consolas, monospace;
    background: rgba(138, 180, 248, 0.12);
    color: var(--color-primary);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.classroom-role {
    background: rgba(129, 201, 149, 0.12);
    color: var(--color-secondary);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.classroom-description {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    max-width: 720px;
}

.member-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.member-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.member-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-logo);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 700;
    font-size: 1rem;
}

.member-info {
    flex: 1;
}

.member-name {
    font-weight: 600;
    color: var(--color-text);
}

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

.member-joined {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.exam-meta {
    display: flex;
    gap: 12px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.exam-meta span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: 999px;
}

.attempt-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.attempt-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.attempt-rank {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
    background: var(--color-surface-elevated);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.attempt-rank:first-child {
    background: linear-gradient(135deg, #facc15, #eab308);
    color: #0d0d0d;
    border-color: transparent;
    box-shadow: 0 0 12px rgba(250, 204, 21, 0.3);
}

.attempt-item .attempt-info {
    flex: 1;
    min-width: 0;
}

.attempt-title {
    font-weight: 600;
    color: var(--color-text);
}

.attempt-score {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-secondary);
    flex-shrink: 0;
}

.show-all-results {
    text-align: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.show-all-link {
    color: var(--color-primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.show-all-link:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.mt-1 {
    margin-top: 16px;
}

.mb-2 {
    margin-bottom: 24px;
}

.hidden {
    display: none;
}

/* === Forms extras === */
.form-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.check-label {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    cursor: pointer;
    user-select: none;
}

.check-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-primary);
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239aa0a6' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 38px;
}

/* === Exam gameplay === */
.exam-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
}

.exam-progress {
    color: var(--color-text-secondary);
    font-weight: 500;
}

.exam-timer {
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent-1);
    background: rgba(242, 139, 130, 0.12);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
}

.exam-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.question-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.question-number {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.question-text {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 20px;
    line-height: 1.5;
}

.answers-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.answer-option {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s;
}

.answer-option:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--color-border-light);
}

.answer-option input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.answer-text {
    color: var(--color-text);
    font-size: 1rem;
}

/* === Results === */
.result-score {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-logo);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-detail-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.result-detail-item {
    padding: 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.result-detail-item.correct {
    background: rgba(129, 201, 149, 0.08);
    border-color: rgba(129, 201, 149, 0.3);
}

.result-detail-item.incorrect {
    background: rgba(242, 139, 130, 0.08);
    border-color: rgba(242, 139, 130, 0.3);
}

.result-question {
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 8px;
}

.result-status {
    font-size: 0.9rem;
    font-weight: 600;
}

.result-detail-item.correct .result-status {
    color: var(--color-secondary);
}

.result-detail-item.incorrect .result-status {
    color: var(--color-accent-1);
}

/* === Exam preview (teacher only) === */
.exam-preview-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.exam-preview-item {
    padding: 20px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.exam-preview-answers {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 14px;
}

.exam-preview-answer {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.exam-preview-answer.correct {
    background: rgba(129, 201, 149, 0.1);
    border: 1px solid rgba(129, 201, 149, 0.3);
    color: var(--color-secondary);
}

.attempt-item {
    text-decoration: none;
    color: inherit;
    transition: background 0.2s;
}

.attempt-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.attempt-info {
    flex: 1;
}

.answer-marker {
    font-weight: 700;
    width: 20px;
    text-align: center;
}

/* === Quiz DNA === */
.dna-genome {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.dna-gene {
    width: 64px;
    height: 80px;
    background: var(--color-surface-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(138, 180, 248, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.dna-gene:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 30px rgba(138, 180, 248, 0.25);
}

.dna-gene-letter {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-logo);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dna-gene-domain {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.dna-description {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-bottom: 24px;
}

.dna-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
}

.dna-stat {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}

.dna-stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-primary);
}

.dna-stat-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.mutation-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.mutation-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
}

.mutation-icon {
    font-size: 1.6rem;
}

.mutation-info {
    flex: 1;
}

.mutation-name {
    font-weight: 600;
    color: var(--color-text);
}

.mutation-desc {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.mutation-date {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* === Special modes === */
.oracle-insight {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(138, 180, 248, 0.08);
    border: 1px solid rgba(138, 180, 248, 0.25);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    color: var(--color-primary);
    font-size: 0.95rem;
}

.oracle-icon {
    font-size: 1.3rem;
}

.prediction-badge {
    margin-left: auto;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(138, 180, 248, 0.15);
    color: var(--color-primary);
}

.impostor-warning {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: rgba(242, 139, 130, 0.08);
    border: 1px solid rgba(242, 139, 130, 0.25);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    color: var(--color-accent-1);
    font-size: 0.95rem;
    animation: impostorPulse 3s ease-in-out infinite;
}

.impostor-icon {
    font-size: 1.3rem;
}

@keyframes impostorPulse {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; }
}

/* === AI Coach === */
.coach-messages {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: 500px;
    overflow-y: auto;
    padding-right: 8px;
    margin-bottom: 20px;
}

.coach-message {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.coach-message.user {
    justify-content: flex-end;
}

.coach-message.assistant {
    justify-content: flex-start;
}

.coach-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--gradient-logo);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.coach-bubble {
    max-width: 70%;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    line-height: 1.5;
    font-size: 0.95rem;
}

.coach-message.user .coach-bubble {
    background: var(--color-primary);
    color: #0d0d0d;
    border-bottom-right-radius: 4px;
}

.coach-message.assistant .coach-bubble {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    border-bottom-left-radius: 4px;
}

.coach-form {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.coach-form .form-group {
    flex: 1;
    margin-bottom: 0;
}

.coach-form textarea {
    resize: none;
}

/* === Timeline Branching === */
.branch-timeline {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.timeline-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    opacity: 0.4;
    transition: opacity 0.3s, transform 0.3s;
}

.timeline-node.active {
    opacity: 1;
    transform: scale(1.1);
}

.timeline-node.done {
    opacity: 0.7;
}

.timeline-dot {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-surface-elevated);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.timeline-node.active .timeline-dot {
    background: var(--gradient-logo);
    border-color: transparent;
    color: #ffffff;
    box-shadow: 0 0 20px rgba(138, 180, 248, 0.3);
}

.timeline-node.done .timeline-dot {
    background: var(--color-secondary);
    border-color: transparent;
    color: #0d0d0d;
}

.timeline-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* === Export actions === */
.export-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.export-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.export-btn svg {
    flex-shrink: 0;
}

.export-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

.export-btn.btn-secondary {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.export-btn.btn-secondary:hover {
    background: var(--color-surface);
    border-color: var(--color-primary);
}

.export-btn.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: #0d0d0d;
    border: none;
}

.export-btn.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 0 24px rgba(138, 180, 248, 0.35);
}

/* === Dashboard exam cards === */
.exam-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}

.exam-card-actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.schedule-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    white-space: nowrap;
}

.schedule-open,
.schedule-open_limited {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
}

.schedule-not_started {
    background: rgba(250, 204, 21, 0.15);
    color: #facc15;
}

.schedule-closed {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
}

.btn-sm {
    padding: 8px 14px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

button[disabled],
.btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--color-surface-elevated);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.schedule-countdown {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
    padding: 16px;
    background: rgba(250, 204, 21, 0.08);
    border: 1px solid rgba(250, 204, 21, 0.2);
    border-radius: var(--radius-md);
    text-align: center;
}

.countdown-label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

.countdown-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: #facc15;
}

/* === Exam not started modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 24px;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

body.modal-open {
    overflow: hidden;
}

.modal-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.modal-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    max-width: 420px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(59, 130, 246, 0.12);
    transform: scale(1);
    transition: transform 0.25s ease;
}

.modal-overlay.hidden .modal-card {
    transform: scale(0.95);
}

.modal-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 50%;
    background: rgba(250, 204, 21, 0.12);
    display: grid;
    place-items: center;
    font-size: 32px;
    border: 1px solid rgba(250, 204, 21, 0.2);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 12px 0;
    line-height: 1.3;
    word-break: break-word;
    hyphens: auto;
}

.modal-message {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.modal-countdown {
    display: block;
    margin-top: 8px;
    font-weight: 600;
    color: #facc15;
}

/* === Dashboard exam not-started detail modal === */
.modal-card-wide {
    max-width: 560px;
    padding: 48px 40px;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    line-height: 1;
    padding: 0;
}

.modal-close:hover {
    background: var(--color-surface-light);
    color: var(--color-text);
}

.exam-detail-table {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin: 24px 0;
    overflow: hidden;
    text-align: left;
}

.exam-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    border-bottom: 1px solid var(--color-border);
    gap: 12px;
}

.exam-detail-row:last-child {
    border-bottom: none;
}

.exam-detail-row.highlight {
    background: rgba(250, 204, 21, 0.08);
}

.exam-detail-row.highlight .exam-detail-value {
    color: #facc15;
    font-weight: 700;
}

.exam-detail-label {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    flex-shrink: 0;
}

.exam-detail-value {
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 600;
    text-align: right;
    word-break: break-word;
    max-width: 60%;
}

/* === Dashboard exam not-started inline card === */
body.dashboard-blur-active .page-container > section,
body.dashboard-blur-active .site-header,
body.dashboard-blur-active .hero-bg,
body.dashboard-blur-active .hero-glow,
body.dashboard-blur-active .hero-overlay {
    filter: blur(3px);
    transition: filter 0.3s ease;
    pointer-events: none;
}

body.dashboard-blur-active .exam-card {
    filter: none !important;
    pointer-events: auto;
    z-index: 999;
    position: relative;
}

.exam-not-started-card {
    margin-top: 12px;
    background: linear-gradient(135deg, rgba(250, 204, 21, 0.12), rgba(250, 204, 21, 0.05));
    border: 1px solid rgba(250, 204, 21, 0.25);
    border-radius: var(--radius-lg);
    padding: 16px;
    animation: cardPop 0.35s ease;
}

.exam-not-started-card.hidden {
    display: none;
}

@keyframes cardPop {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.exam-not-started-content {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
}

.exam-not-started-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(250, 204, 21, 0.18);
    display: grid;
    place-items: center;
    font-size: 24px;
    flex-shrink: 0;
    border: 1px solid rgba(250, 204, 21, 0.25);
}

.exam-not-started-text {
    flex: 1;
}

.exam-not-started-title {
    font-weight: 700;
    color: var(--color-text);
    font-size: 1rem;
    margin-bottom: 4px;
}

.exam-not-started-countdown {
    font-weight: 600;
    color: #facc15;
    font-size: 0.95rem;
}

.exam-not-started-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.exam-not-started-close:hover {
    background: var(--color-surface-light);
    color: var(--color-text);
}

/* === Attempts exhausted card === */
.attempts-exhausted-card {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-md);
    max-width: 420px;
    margin: 0 auto;
    animation: cardPop 0.4s ease;
}

.attempts-exhausted-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(242, 139, 130, 0.12);
    color: var(--color-accent-1);
    font-size: 2rem;
    display: grid;
    place-items: center;
    margin-bottom: 4px;
    box-shadow: 0 0 30px rgba(242, 139, 130, 0.18);
}

.attempts-exhausted-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.attempts-exhausted-message {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 320px;
    margin: 0 0 8px;
}

.attempts-exhausted-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.attempts-exhausted-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 8px;
}

@keyframes cardPop {
    0% { opacity: 0; transform: scale(0.96) translateY(12px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}

/* === Exam closed card === */
.exam-closed-card {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow-md);
    max-width: 420px;
    margin: 0 auto;
    animation: cardPop 0.4s ease;
}

.exam-closed-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.12);
    color: #f87171;
    font-size: 2rem;
    display: grid;
    place-items: center;
    margin-bottom: 4px;
    box-shadow: 0 0 30px rgba(239, 68, 68, 0.18);
}

.exam-closed-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.exam-closed-message {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 320px;
    margin: 0 0 8px;
}

/* === Floating Coach IA button === */
.coach-fab {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #8ab4f8 0%, #c084fc 100%);
    color: #0d0d0d;
    border-radius: 50%;
    text-decoration: none;
    font-weight: 700;
    box-shadow: 0 6px 24px rgba(138, 180, 248, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    animation: coachFabPop 0.5s ease 0.8s both;
}

.coach-fab:hover {
    transform: translateY(-3px) scale(1.08);
    box-shadow: 0 10px 32px rgba(138, 180, 248, 0.55), 0 0 0 1px rgba(255, 255, 255, 0.15);
}

.coach-fab-icon {
    font-size: 1.7rem;
    line-height: 1;
}

.coach-fab-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@keyframes coachFabPop {
    0% { opacity: 0; transform: translateY(20px) scale(0.9); }
    100% { opacity: 1; transform: translateY(0) scale(1); }
}

@media (max-width: 768px) {
    .coach-fab {
        bottom: 16px;
        right: 16px;
        width: 50px;
        height: 50px;
    }

    .coach-fab-icon {
        font-size: 1.5rem;
    }
}