/**
 * Afirin Quiz Arena Design System
 * Scoped under .afirin-quiz
 */

:root {
    --quiz-primary: #fa470d;
    --quiz-primary-hover: #e03b05;
    --quiz-primary-glow: rgba(250, 71, 13, 0.35);
    
    --quiz-navy: #090d16;
    --quiz-blue: #1e3a8a;
    --quiz-purple: #6b21a8;
    --quiz-cyan: #06b6d4;
    --quiz-gold: #f59e0b;
    --quiz-emerald: #10b981;
    --quiz-rose: #f43f5e;
}

/* Light Mode Defaults */
html[data-theme="light"] .afirin-quiz {
    --quiz-bg: #f8fafc;
    --quiz-card-bg: #ffffff;
    --quiz-card-border: #e2e8f0;
    --quiz-card-hover: #f1f5f9;
    --quiz-text-main: #0f172a;
    --quiz-text-muted: #64748b;
    --quiz-hud-bg: #ffffff;
    --quiz-hud-border: #cbd5e1;
    --quiz-btn-bg: #f8fafc;
    --quiz-btn-border: #cbd5e1;
    --quiz-btn-hover: #e2e8f0;
    --quiz-btn-text: #0f172a;
    --quiz-arena-gradient: radial-gradient(circle at 50% 0%, rgba(250, 71, 13, 0.08) 0%, rgba(30, 58, 138, 0.05) 50%, #f8fafc 100%);
    --quiz-glow: 0 4px 20px -2px rgba(0, 0, 0, 0.06);
}

/* Dark Mode */
html[data-theme="dark"] .afirin-quiz {
    --quiz-bg: #090d16;
    --quiz-card-bg: rgba(15, 23, 42, 0.85);
    --quiz-card-border: rgba(255, 255, 255, 0.08);
    --quiz-card-hover: rgba(30, 41, 59, 0.9);
    --quiz-text-main: #f8fafc;
    --quiz-text-muted: #94a3b8;
    --quiz-hud-bg: rgba(15, 23, 42, 0.9);
    --quiz-hud-border: rgba(255, 255, 255, 0.12);
    --quiz-btn-bg: rgba(30, 41, 59, 0.7);
    --quiz-btn-border: rgba(255, 255, 255, 0.1);
    --quiz-btn-hover: rgba(51, 65, 85, 0.8);
    --quiz-btn-text: #f8fafc;
    --quiz-arena-gradient: radial-gradient(circle at 50% 10%, rgba(250, 71, 13, 0.18) 0%, rgba(88, 28, 135, 0.12) 40%, #090d16 85%);
    --quiz-glow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
}

/* Base Quiz Container */
.afirin-quiz {
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    color: var(--quiz-text-main);
    background: var(--quiz-arena-gradient);
    min-height: calc(100vh - 80px);
    border-radius: 16px;
    padding: 24px;
    box-sizing: border-box;
}

/* Hero Section */
.quiz-hero {
    background: linear-gradient(135deg, rgba(250, 71, 13, 0.15) 0%, rgba(107, 33, 168, 0.15) 50%, rgba(6, 182, 212, 0.1) 100%);
    border: 1px solid var(--quiz-card-border);
    border-radius: 20px;
    padding: 40px 32px;
    position: relative;
    overflow: hidden;
    margin-bottom: 32px;
    box-shadow: var(--quiz-glow);
    backdrop-filter: blur(8px);
}

.quiz-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(250, 71, 13, 0.2);
    border: 1px solid rgba(250, 71, 13, 0.4);
    border-radius: 9999px;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--quiz-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.quiz-hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin: 0 0 12px 0;
    background: linear-gradient(135deg, #ffffff 30%, #fde047 70%, #fa470d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

html[data-theme="light"] .quiz-hero-title {
    background: linear-gradient(135deg, #0f172a 30%, #4338ca 70%, #fa470d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.quiz-hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--quiz-text-muted);
    max-width: 620px;
    line-height: 1.6;
    margin-bottom: 28px;
}

.quiz-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.quiz-btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, #fa470d 0%, #ea580c 100%);
    color: #ffffff !important;
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 28px;
    border-radius: 12px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 18px var(--quiz-primary-glow);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.quiz-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(250, 71, 13, 0.45);
}

.quiz-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: var(--quiz-btn-bg);
    border: 1px solid var(--quiz-btn-border);
    color: var(--quiz-text-main) !important;
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 24px;
    border-radius: 12px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-btn-secondary:hover {
    background: var(--quiz-btn-hover);
    transform: translateY(-1px);
}

.quiz-btn-live {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: linear-gradient(135deg, #6b21a8 0%, #3b82f6 100%);
    color: #ffffff !important;
    font-weight: 700;
    font-size: 1rem;
    padding: 14px 26px;
    border-radius: 12px;
    text-decoration: none;
    box-shadow: 0 4px 18px rgba(107, 33, 168, 0.35);
    transition: all 0.2s ease;
}

.quiz-btn-live:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
}

/* Glass Card */
.quiz-card {
    background: var(--quiz-card-bg);
    border: 1px solid var(--quiz-card-border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--quiz-glow);
    transition: transform 0.2s ease, border-color 0.2s ease;
    backdrop-filter: blur(12px);
}

.quiz-card:hover {
    border-color: rgba(250, 71, 13, 0.3);
}

/* Categories Grid */
.quiz-categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 32px;
}

.category-card {
    background: var(--quiz-card-bg);
    border: 1px solid var(--quiz-card-border);
    border-radius: 14px;
    padding: 20px;
    text-decoration: none;
    color: var(--quiz-text-main);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 140px;
    position: relative;
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 28px -6px rgba(0, 0, 0, 0.18);
    border-color: var(--cat-color, var(--quiz-primary));
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--cat-color, var(--quiz-primary));
}

.category-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    background: rgba(255, 255, 255, 0.08);
    color: var(--cat-color, var(--quiz-primary));
    margin-bottom: 12px;
}

/* ==========================================================================
   QUIZ ARENA HUD & GAMEPLAY
   ========================================================================== */
.arena-wrapper {
    max-width: 1040px;
    margin: 0 auto;
}

.arena-hud {
    background: var(--quiz-hud-bg);
    border: 1px solid var(--quiz-hud-border);
    border-radius: 14px;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
    box-shadow: var(--quiz-glow);
}

.hud-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
}

.hud-label {
    color: var(--quiz-text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
}

.hud-value {
    font-weight: 800;
    color: var(--quiz-text-main);
    font-size: 1.05rem;
}

.hud-timer-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: rgba(250, 71, 13, 0.15);
    border: 1px solid rgba(250, 71, 13, 0.3);
    border-radius: 9999px;
    color: var(--quiz-primary);
    font-weight: 800;
    font-size: 1.05rem;
    min-width: 80px;
    justify-content: center;
}

.hud-timer-badge.urgent {
    background: rgba(244, 63, 94, 0.25);
    border-color: #f43f5e;
    color: #f43f5e;
    animation: timerPulse 0.7s infinite alternate;
}

@keyframes timerPulse {
    from { transform: scale(1); }
    to { transform: scale(1.08); box-shadow: 0 0 14px rgba(244, 63, 94, 0.5); }
}

/* Timer progress bar */
.timer-bar-container {
    width: 100%;
    height: 6px;
    background: var(--quiz-card-border);
    border-radius: 9999px;
    overflow: hidden;
    margin-bottom: 24px;
}

.timer-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981 0%, #f59e0b 60%, #fa470d 100%);
    border-radius: 9999px;
    transition: width 1s linear;
}

/* Question Box */
.question-card {
    background: var(--quiz-card-bg);
    border: 2px solid var(--quiz-card-border);
    border-radius: 20px;
    padding: 36px 32px;
    margin-bottom: 24px;
    box-shadow: var(--quiz-glow);
    position: relative;
    transition: border-color 0.3s ease;
}

.question-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
}

.question-category-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 8px;
    background: rgba(250, 71, 13, 0.12);
    color: var(--quiz-primary);
}

.question-difficulty-pill {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--quiz-btn-bg);
    color: var(--quiz-text-muted);
}

.question-text {
    font-size: clamp(1.2rem, 2.2vw, 1.55rem);
    font-weight: 700;
    line-height: 1.5;
    color: var(--quiz-text-main);
    margin: 0;
}

.question-image {
    max-width: 100%;
    max-height: 280px;
    object-fit: contain;
    border-radius: 12px;
    margin-top: 20px;
    border: 1px solid var(--quiz-card-border);
}

/* Answers Grid (2x2 on Desktop, 1 column on mobile) */
.answers-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

@media (max-width: 767px) {
    .answers-grid {
        grid-template-columns: 1fr;
    }
}

/* Answer Button States (8 States) */
.answer-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--quiz-btn-bg);
    border: 2px solid var(--quiz-btn-border);
    border-radius: 14px;
    padding: 18px 20px;
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--quiz-btn-text);
    cursor: pointer;
    text-align: left;
    outline: none;
    box-sizing: border-box;
    position: relative;
    transition: all 0.18s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
}

.answer-letter {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
    background: rgba(250, 71, 13, 0.15);
    color: var(--quiz-primary);
    border: 1px solid rgba(250, 71, 13, 0.3);
    flex-shrink: 0;
    transition: all 0.2s ease;
}

.answer-text {
    flex: 1;
    line-height: 1.4;
    word-break: break-word;
}

/* State 2: Hover */
.answer-btn:hover:not(:disabled):not(.correct):not(.wrong):not(.selected):not(.removed) {
    background: var(--quiz-btn-hover);
    border-color: rgba(250, 71, 13, 0.6);
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

/* State 3: Focus */
.answer-btn:focus-visible {
    border-color: var(--quiz-primary);
    box-shadow: 0 0 0 4px rgba(250, 71, 13, 0.35);
}

/* State 4: Selected (Waiting for validation) */
.answer-btn.selected {
    border-color: #f59e0b;
    background: rgba(245, 158, 11, 0.18);
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.35);
}
.answer-btn.selected .answer-letter {
    background: #f59e0b;
    color: #ffffff;
}

/* State 5: Correct Answer */
.answer-btn.correct {
    border-color: #10b981 !important;
    background: rgba(16, 185, 129, 0.22) !important;
    color: #ffffff !important;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.45);
}
.answer-btn.correct .answer-letter {
    background: #10b981 !important;
    color: #ffffff !important;
    border-color: #10b981 !important;
}

/* State 6: Wrong Answer */
.answer-btn.wrong {
    border-color: #f43f5e !important;
    background: rgba(244, 63, 94, 0.2) !important;
    color: #ffffff !important;
    box-shadow: 0 0 16px rgba(244, 63, 94, 0.4);
}
.answer-btn.wrong .answer-letter {
    background: #f43f5e !important;
    color: #ffffff !important;
    border-color: #f43f5e !important;
}

/* State 7: Disabled */
.answer-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* State 8: 50:50 Removed */
.answer-btn.removed {
    opacity: 0.2;
    pointer-events: none;
    text-decoration: line-through;
    filter: grayscale(1);
    transform: scale(0.97);
}

/* ==========================================================================
   LIFELINES BAR
   ========================================================================== */
.lifelines-bar {
    background: var(--quiz-card-bg);
    border: 1px solid var(--quiz-card-border);
    border-radius: 16px;
    padding: 16px 20px;
    margin-bottom: 24px;
    box-shadow: var(--quiz-glow);
}

.lifelines-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.lifelines-title {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--quiz-text-muted);
}

.lifelines-container {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.lifeline-btn {
    flex: 1 1 calc(16.66% - 10px);
    min-width: 100px;
    background: var(--quiz-btn-bg);
    border: 1px solid var(--quiz-btn-border);
    border-radius: 12px;
    padding: 10px 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--quiz-text-main);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.lifeline-btn:hover:not(:disabled) {
    background: var(--quiz-btn-hover);
    border-color: var(--quiz-primary);
    transform: translateY(-2px);
}

.lifeline-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    filter: grayscale(1);
}

.lifeline-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    background: var(--quiz-primary);
    color: #ffffff;
    font-size: 0.65rem;
    font-weight: 800;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

/* Lifeline Feedback Panels */
.lifeline-panel {
    background: rgba(250, 71, 13, 0.1);
    border: 1px solid rgba(250, 71, 13, 0.3);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
    display: none;
    animation: fadeIn 0.3s ease;
}

.lifeline-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Explanation / Answer Feedback Card */
.feedback-card {
    background: var(--quiz-card-bg);
    border: 2px solid var(--quiz-card-border);
    border-radius: 16px;
    padding: 24px;
    margin-top: 20px;
    display: none;
    animation: fadeIn 0.3s ease;
}

.feedback-card.correct {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.1);
}

.feedback-card.wrong {
    border-color: #f43f5e;
    background: rgba(244, 63, 94, 0.1);
}

/* ==========================================================================
   MOBILE OPTIMIZATIONS (320px, 375px, 390px, 430px)
   ========================================================================== */
@media (max-width: 480px) {
    .afirin-quiz {
        padding: 12px;
        border-radius: 0;
    }
    
    .quiz-hero {
        padding: 24px 16px;
        border-radius: 14px;
    }
    
    .arena-hud {
        padding: 10px 14px;
        gap: 8px;
    }
    
    .hud-item {
        font-size: 0.75rem;
    }
    
    .hud-value {
        font-size: 0.95rem;
    }
    
    .question-card {
        padding: 20px 16px;
        border-radius: 14px;
    }
    
    .question-text {
        font-size: 1.15rem;
    }
    
    .answer-btn {
        padding: 14px 16px;
        font-size: 0.95rem;
    }
    
    .answer-letter {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    
    .lifeline-btn {
        flex: 1 1 calc(33.33% - 8px);
        min-width: 80px;
        font-size: 0.7rem;
        padding: 8px 4px;
    }
}