@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color Palette - ELITE PREMIUM WHITE THEME (Default) */
    --accent-1: #4f46e5; /* Vibrant Indigo */
    --accent-2: #06b6d4; /* Vivid Cyan */
    --accent-3: #f43f5e; /* Rose */
    --accent-4: #8b5cf6; /* Purple */
    
    --bg-base: #f8fafc; /* Very light cool gray */
    --bg-surface: rgba(255, 255, 255, 0.7); 
    --bg-surface-elevated: rgba(255, 255, 255, 0.9);
    
    --text-main: #0f172a; /* Deep Navy text */
    --text-muted: #64748b;
    
    --success: #10b981; 
    --danger: #ef4444; 
    --warning: #f59e0b; 
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.85); /* Frosty white */
    --glass-border: rgba(99, 102, 241, 0.15); /* Soft indigo border */
    --glass-border-highlight: rgba(255, 255, 255, 1);
    --glass-shadow: 0 20px 50px rgba(99, 102, 241, 0.08), inset 0 2px 0 rgba(255,255,255,0.8);
    --glass-blur: blur(20px);
    
    /* Variables */
    --sidebar-width: 280px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- DARK THEME OVERRIDES --- */
body.dark-theme {
    --accent-1: #00f2fe; /* Neon Cyan */
    --accent-2: #4facfe; /* Deep Sky Blue */
    --accent-3: #f093fb; /* Neon Pink */
    --accent-4: #f5576c; /* Neon Coral */
    
    --bg-base: #0f172a; /* Dark background */
    --bg-surface: rgba(30, 41, 59, 0.7); 
    --bg-surface-elevated: rgba(30, 41, 59, 0.9);
    
    --text-main: #f8fafc; /* Crisp white for text */
    --text-muted: #94a3b8;
    
    /* Glassmorphism Dark */
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.05);
    --glass-border-highlight: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 20px 50px rgba(0,0,0,0.5), inset 0 2px 0 rgba(255,255,255,0.05);
}

body.dark-theme .bg-shape-1 { background: linear-gradient(135deg, var(--accent-1), var(--accent-2)); opacity: 0.15; }
body.dark-theme .bg-shape-2 { background: linear-gradient(135deg, var(--accent-3), var(--accent-4)); opacity: 0.15; }
body.dark-theme .sidebar {
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.95));
}
body.dark-theme .logo h2 {
    background: linear-gradient(135deg, #fff 20%, var(--accent-1) 100%);
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
body.dark-theme .nav-item { color: #cbd5e1; }
body.dark-theme .nav-item:hover { color: var(--accent-1); background: rgba(0, 242, 254, 0.05); }
body.dark-theme .nav-item.active {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.1), rgba(79, 172, 254, 0.05));
    border-color: rgba(0, 242, 254, 0.2);
    box-shadow: 0 10px 25px rgba(0, 242, 254, 0.1);
}
body.dark-theme .crumb { color: #94a3b8; }
body.dark-theme .crumb.active { color: #f8fafc; }
body.dark-theme .theme-toggle { background: rgba(255,255,255,0.05); color: #fff; border-color: rgba(255,255,255,0.1); }
body.dark-theme .theme-toggle:hover { background: rgba(255,255,255,0.1); color: var(--accent-1); }
body.dark-theme .btn-secondary { background: rgba(255,255,255,0.05); color: #fff; border-color: rgba(255,255,255,0.1); }
body.dark-theme .btn-secondary:not(:disabled):hover { background: rgba(255,255,255,0.1); color: var(--accent-1); border-color: var(--accent-1); }
body.dark-theme .choice-item { background: rgba(255,255,255,0.03); color: #f8fafc; }
body.dark-theme .choice-text { color: #e2e8f0; }
body.dark-theme .q-text { color: #f8fafc; }
body.dark-theme .stat-box { background: rgba(30,41,59,0.8); }
body.dark-theme .stat-val { color: #f8fafc; }
body.dark-theme .results-view h2 { background: linear-gradient(135deg, #fff, var(--accent-1)); -webkit-background-clip: text; background-clip: text; }
body.dark-theme .stat-badge { background: rgba(255,255,255,0.05); color: #fff; }

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

body {
    background-color: var(--bg-base);
    color: var(--text-main);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* --- ANIMATED MESH BACKGROUND (Vibrant White) --- */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(244, 63, 94, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    z-index: -2;
    pointer-events: none;
}

.bg-shape {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.4;
    animation: float 20s infinite alternate ease-in-out;
}
.bg-shape-1 {
    top: -10%; left: -10%;
    width: 50vw; height: 50vw;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    animation-delay: 0s;
}
.bg-shape-2 {
    bottom: -10%; right: -10%;
    width: 60vw; height: 60vw;
    background: linear-gradient(135deg, var(--accent-3), var(--accent-4));
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(5%, 5%) scale(1.05); }
    66% { transform: translate(-5%, 10%) scale(0.95); }
    100% { transform: translate(0, 0) scale(1); }
}

.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* --- SIDEBAR --- */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(to bottom, rgba(255,255,255,0.95), rgba(248,250,252,0.95));
    box-shadow: 10px 0 30px rgba(99, 102, 241, 0.05);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 32px 24px;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    transition: transform var(--transition);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
}

.logo h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #0f172a 20%, var(--accent-1) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.logo h2 span {
    font-size: 16px;
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.logo p {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    letter-spacing: 2px;
    margin-top: 4px;
}

.nav-section { margin-bottom: 40px; }
.nav-title {
    font-size: 11px;
    color: #94a3b8;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 16px;
    padding-left: 16px;
}

.nav-links { list-style: none; }
.nav-item {
    display: flex;
    align-items: center;
    padding: 14px 18px;
    margin-bottom: 10px;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: #475569;
    transition: var(--transition);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    overflow: hidden;
}
.nav-item i {
    width: 24px;
    font-size: 18px;
    margin-right: 14px;
    transition: var(--transition);
}
.nav-item::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0; width: 3px;
    background: linear-gradient(to bottom, var(--accent-1), var(--accent-2));
    opacity: 0;
    transition: var(--transition);
}
.nav-item:hover {
    color: var(--accent-1);
    background: rgba(99, 102, 241, 0.05);
}
.nav-item:hover i {
    color: var(--accent-1);
    transform: scale(1.1);
}
.nav-item.active {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.05));
    border: 1px solid rgba(79, 70, 229, 0.2);
    color: var(--accent-1);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.1);
}
.nav-item.active::before { opacity: 1; }
.nav-item.active i { color: var(--accent-1); }

.nav-item.external a {
    display: flex; align-items: center; text-decoration: none; color: inherit; width: 100%;
}
.mt-auto { margin-top: auto; }

/* --- MAIN CONTENT --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 40px 60px;
    display: flex;
    flex-direction: column;
}

/* Header */
.top-header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 50px;
}
.header-left { display: flex; align-items: center; gap: 20px; }
.breadcrumbs {
    display: flex; align-items: center; gap: 10px; font-size: 15px; color: var(--text-muted); font-weight: 500;
}
.crumb { cursor: pointer; transition: var(--transition); }
.crumb:hover { color: var(--accent-1); text-shadow: none; }
.crumb.active { color: #0f172a; font-weight: 600; pointer-events: none; }
.crumb::before { content: '›'; margin-right: 10px; color: #cbd5e1; font-size: 18px; }
.crumb:first-child::before { display: none; }

.theme-toggle {
    width: 44px; height: 44px; border-radius: 50%;
    background: #fff; border: 1px solid rgba(99, 102, 241, 0.15);
    display: flex; align-items: center; justify-content: center;
    color: #0f172a; font-size: 20px; cursor: pointer; transition: var(--transition);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}
.theme-toggle:hover {
    background: #f8fafc;
    color: var(--accent-1);
    border-color: var(--accent-1);
    transform: rotate(15deg);
}

/* Base Utility Classes */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-top: 1px solid var(--glass-border-highlight);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
}

.btn {
    padding: 14px 28px;
    border-radius: var(--radius-md);
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}
.btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    z-index: -1;
    opacity: 0;
    transition: var(--transition);
}
.btn:hover::before { opacity: 1; }

.btn-primary {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: #fff;
    box-shadow: 0 4px 15px rgba(79, 172, 254, 0.4);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}
.btn-primary:not(:disabled):hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(79, 172, 254, 0.6);
}

.btn-success {
    background: linear-gradient(135deg, var(--success), #00bfa5);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 230, 118, 0.4);
}
.btn-success:not(:disabled):hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 230, 118, 0.6);
}

.btn-secondary {
    background: #fff;
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: #0f172a;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}
.btn-secondary:not(:disabled):hover {
    background: #f8fafc;
    border-color: var(--accent-1);
    color: var(--accent-1);
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; filter: grayscale(1); }

/* Loading */
.loading-overlay {
    display: flex; flex-direction: column; align-items: center; padding: 100px 0; gap: 20px;
}
.spinner {
    width: 60px; height: 60px;
    border: 4px solid rgba(0, 0, 0, 0.05);
    border-radius: 50%;
    border-top-color: var(--accent-1);
    animation: spin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}
.loading-overlay p {
    font-size: 16px; font-weight: 500; color: var(--accent-1);
    letter-spacing: 2px; text-transform: uppercase;
    animation: pulse 2s infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 0.6; } 50% { opacity: 1; } }

/* Grid View Elements */
.grid-view {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.content-card {
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-top: 1px solid var(--glass-border-highlight);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
}
.content-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(79, 70, 229, 0.06), transparent 40%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}
.content-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(79, 70, 229, 0.4);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1), 0 0 20px rgba(79, 70, 229, 0.1);
}
.content-card:hover::after { opacity: 1; }

.card-icon {
    width: 60px; height: 60px;
    border-radius: 16px;
    background: rgba(79, 70, 229, 0.08);
    border: 1px solid rgba(79, 70, 229, 0.2);
    color: var(--accent-1);
    display: flex; align-items: center; justify-content: center;
    font-size: 26px; flex-shrink: 0;
    transition: var(--transition);
    box-shadow: inset 0 2px 5px rgba(0,0,0,0.02);
}
.content-card:hover .card-icon {
    background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    color: #fff;
    transform: rotate(5deg) scale(1.1);
    box-shadow: 0 10px 20px rgba(79, 70, 229, 0.3);
}

.card-info { flex: 1; }
.card-title {
    font-size: 18px; font-weight: 700; margin-bottom: 6px; line-height: 1.3;
    transition: var(--transition);
}
.content-card:hover .card-title {
    background: linear-gradient(135deg, #0f172a, var(--accent-1));
    -webkit-background-clip: text;
    background-clip: text; -webkit-text-fill-color: transparent;
}
.card-subtitle { font-size: 14px; color: var(--text-muted); font-weight: 500; }

.card-arrow {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(0,0,0,0.05);
    color: var(--text-main);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; transition: var(--transition);
}
.content-card:hover .card-arrow {
    background: var(--accent-1); color: #fff;
    transform: translateX(5px);
}

/* --- QUIZ VIEW --- */
.quiz-header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; flex-wrap: wrap; gap: 20px;
}
.quiz-header h2 { font-size: 28px; font-weight: 800; letter-spacing: -0.5px; }
.quiz-stats { display: flex; gap: 15px; }
.stat-badge {
    background: #fff;
    padding: 8px 16px; border-radius: 20px; font-size: 15px; font-weight: 600;
    display: flex; align-items: center; gap: 10px;
    border: 1px solid rgba(0,0,0,0.1);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    color: #0f172a;
}
.success-badge { color: var(--success); border-color: rgba(0, 230, 118, 0.3); text-shadow: 0 0 10px rgba(0, 230, 118, 0.3); }
.danger-badge { color: var(--danger); border-color: rgba(255, 23, 68, 0.3); text-shadow: 0 0 10px rgba(255, 23, 68, 0.3); }

.question-card { padding: 50px; position: relative; background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-top: 1px solid var(--glass-border-highlight);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg); }
.question-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 5px;
    background: linear-gradient(90deg, var(--accent-1), var(--accent-3));
}
.q-number {
    display: inline-block;
    font-size: 14px; font-weight: 700; color: var(--accent-1);
    background: rgba(79, 70, 229, 0.1); padding: 4px 12px; border-radius: 20px;
    margin-bottom: 24px; text-transform: uppercase; letter-spacing: 2px;
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.1);
}
.q-text { font-size: 24px; font-weight: 600; line-height: 1.6; margin-bottom: 30px; color: #0f172a; }
.q-image-container {
    margin-bottom: 30px; border-radius: var(--radius-md); overflow: hidden;
    border: 1px solid var(--glass-border); box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}
.q-image-container img { max-width: 100%; display: block; width: 100%; object-fit: cover; }

.q-choices { display: flex; flex-direction: column; gap: 16px; margin-bottom: 40px; }
.choice-item {
    display: flex; align-items: center; padding: 20px 24px;
    border-radius: var(--radius-md); background: #fff;
    border: 1px solid rgba(99, 102, 241, 0.15); cursor: pointer; transition: var(--transition);
    position: relative; overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}
.choice-item input { display: none; }
.choice-letter {
    width: 40px; height: 40px; border-radius: 12px;
    background: rgba(79, 70, 229, 0.08); display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 700; margin-right: 20px; flex-shrink: 0;
    transition: var(--transition); border: 1px solid transparent; color: var(--accent-1);
}
.choice-text { font-size: 18px; flex: 1; line-height: 1.5; color: #334155; font-weight: 500; transition: var(--transition); }
.choice-indicator { margin-left: 20px; font-size: 24px; opacity: 0; transform: scale(0.5); transition: var(--transition); }

/* Empty Text / Image Question Grid Layout */
.q-choices.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 15px;
}
.choice-item.empty-text {
    justify-content: center;
    padding: 20px 10px;
}
.choice-item.empty-text .choice-letter {
    margin-right: 0;
    width: 50px; height: 50px;
    font-size: 22px;
}
.choice-item.empty-text .choice-text { display: none; }
.choice-item.empty-text .choice-indicator { position: absolute; top: 10px; right: 10px; margin-left: 0; font-size: 16px; }

/* Hover & Selected States */
.choice-item:hover:not(.answered) {
    background: #f8fafc; border-color: var(--accent-1); transform: translateY(-3px); box-shadow: 0 10px 25px rgba(79, 70, 229, 0.1);
}
.choice-item.empty-text:hover:not(.answered) {
    transform: translateY(-5px); /* grid layout hover matches better vertically */
}
.choice-item:hover:not(.answered) .choice-text { color: var(--text-main); }

.choice-item.selected:not(.answered) {
    border-color: var(--accent-1); background: rgba(79, 70, 229, 0.05);
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.1);
}
.choice-item.selected:not(.answered) .choice-letter {
    background: var(--accent-1); color: #fff; border-color: var(--accent-1);
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.5);
}
.choice-item.selected:not(.answered) .choice-text { color: var(--text-main); }

/* Answered States */
.choice-item.answered { cursor: default; }
.choice-item.is-correct {
    border-color: var(--success); background: rgba(0, 230, 118, 0.1);
    box-shadow: 0 4px 20px rgba(0, 230, 118, 0.15); border-width: 2px;
}
.choice-item.is-correct .choice-letter {
    background: var(--success); color: var(--bg-base); border-color: var(--success);
    box-shadow: 0 0 15px rgba(0, 230, 118, 0.5);
}
.choice-item.is-correct .choice-text { color: var(--text-main); font-weight: 600; }
.choice-item.is-correct .choice-indicator { opacity: 1; transform: scale(1); color: var(--success); }
.choice-item.is-correct .icon-correct { display: block; }
.choice-item.is-correct .icon-wrong { display: none; }

.choice-item.is-wrong {
    border-color: var(--danger); background: rgba(255, 23, 68, 0.1);
    box-shadow: 0 4px 20px rgba(255, 23, 68, 0.15); border-width: 2px;
}
.choice-item.is-wrong .choice-letter {
    background: var(--danger); color: #fff; border-color: var(--danger);
    box-shadow: 0 0 15px rgba(255, 23, 68, 0.5);
}
.choice-item.is-wrong .choice-text { color: var(--text-main); }
.choice-item.is-wrong .choice-indicator { opacity: 1; transform: scale(1); color: var(--danger); }
.choice-item.is-wrong .icon-wrong { display: block; }
.choice-item.is-wrong .icon-correct { display: none; }

.choice-item.answered:not(.is-correct):not(.is-wrong) { opacity: 0.3; filter: grayscale(1); }

.q-actions { display: flex; justify-content: space-between; border-top: 1px solid rgba(0,0,0,0.05); padding-top: 30px; }

/* Results View */
.results-view { padding: 80px 50px; text-align: center; max-width: 700px; margin: 0 auto; position: relative; overflow: hidden; }
.results-view::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: conic-gradient(from 0deg, transparent, rgba(240, 147, 251, 0.2), transparent 30%);
    animation: rotate 10s linear infinite; z-index: -1;
}
@keyframes rotate { 100% { transform: rotate(360deg); } }

.result-icon { font-size: 80px; color: var(--accent-3); margin-bottom: 20px; filter: drop-shadow(0 0 20px rgba(240, 147, 251, 0.5)); }
.results-view h2 { font-size: 42px; font-weight: 800; margin-bottom: 40px; background: linear-gradient(135deg, #0f172a, var(--accent-1)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.result-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 40px; }
.stat-box { background: rgba(255,255,255,0.9); padding: 30px; border-radius: var(--radius-lg); border: 1px solid rgba(0,0,0,0.05); transition: var(--transition); }
.stat-box:hover { transform: translateY(-5px); background: rgba(255,255,255,1); }
.stat-box.highlight { grid-column: span 2; background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.05)); border-color: rgba(79, 70, 229, 0.3); box-shadow: 0 10px 30px rgba(79, 70, 229, 0.15); }
.stat-val { display: block; font-size: 48px; font-weight: 800; margin-bottom: 5px; color: #0f172a; text-shadow: none; }
.stat-label { color: #64748b; font-size: 15px; text-transform: uppercase; letter-spacing: 3px; font-weight: 600; }

/* Responsive */
.d-md-none { display: none; }

@media (max-width: 900px) {
    .d-md-none { display: block; }
    .sidebar { transform: translateX(-100%); width: 300px; box-shadow: 20px 0 50px rgba(0,0,0,0.2); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; padding: 24px; }
    .menu-toggle, .close-sidebar { background: transparent; border: none; color: inherit; font-size: 24px; cursor: pointer; }
    .top-header { margin-bottom: 30px; }
    .question-card { padding: 30px 20px; }
    .q-text { font-size: 20px; }
    .choice-item { padding: 16px; }
    .choice-text { font-size: 16px; }
    .results-view { padding: 40px 20px; }
    .result-stats { grid-template-columns: 1fr; }
    .stat-box.highlight { grid-column: span 1; }
}

/* More colorful mesh for light theme */
body.light-theme::before {
    background: 
        radial-gradient(circle at 10% 20%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(244, 63, 94, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

body.light-theme .sidebar {
    background: linear-gradient(to bottom, rgba(255,255,255,0.95), rgba(248,250,252,0.95));
    box-shadow: 10px 0 30px rgba(99, 102, 241, 0.05);
}

body.light-theme .logo h2 {
    background: linear-gradient(135deg, #0f172a 20%, var(--accent-1) 100%);
    -webkit-background-clip: text;
    background-clip: text;
}
body.light-theme .nav-title { color: #94a3b8; }
body.light-theme .nav-item { color: #475569; }
body.light-theme .nav-item:hover { background: rgba(99, 102, 241, 0.05); color: var(--accent-1); }
body.light-theme .nav-item.active { 
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.05));
    border-color: rgba(79, 70, 229, 0.2);
    color: var(--accent-1);
    box-shadow: 0 10px 25px rgba(79, 70, 229, 0.1);
}

body.light-theme .crumb { color: #64748b; }
body.light-theme .crumb:hover { color: var(--accent-1); text-shadow: none; }
body.light-theme .crumb.active { color: #0f172a; }
body.light-theme .crumb::before { color: #cbd5e1; }

body.light-theme .theme-toggle { color: #0f172a; border-color: rgba(99, 102, 241, 0.15); background: #fff; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
body.light-theme .theme-toggle:hover { background: #f8fafc; color: var(--accent-1); border-color: var(--accent-1); }

body.light-theme .btn-secondary {
    background: #fff; border-color: rgba(99, 102, 241, 0.2); color: #0f172a; box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}
body.light-theme .btn-secondary:not(:disabled):hover { background: #f8fafc; border-color: var(--accent-1); color: var(--accent-1); }

body.light-theme .q-number { color: var(--accent-1); background: rgba(79, 70, 229, 0.1); display: inline-block; padding: 4px 12px; border-radius: 20px; font-weight: 700; margin-bottom: 20px;}
body.light-theme .q-text { color: #0f172a; font-weight: 600; }

body.light-theme .choice-item {
    background: #fff; border-color: rgba(99, 102, 241, 0.15); box-shadow: 0 4px 15px rgba(0,0,0,0.02);
}
body.light-theme .choice-item:hover:not(.answered) {
    background: #f8fafc; border-color: var(--accent-1); transform: translateY(-3px); box-shadow: 0 10px 25px rgba(79, 70, 229, 0.1);
}
body.light-theme .choice-letter {
    background: rgba(79, 70, 229, 0.08); border-color: transparent; color: var(--accent-1);
}
body.light-theme .choice-text { color: #334155; font-weight: 500; }
body.light-theme .choice-item.selected:not(.answered) .choice-text { color: #fff; }
body.light-theme .choice-item.selected:not(.answered) .choice-letter { background: rgba(255,255,255,0.2); color: #fff;}

/* In light theme, stats should also drop dark backgrounds */
body.light-theme .stat-box { background: #fff; border-color: rgba(99, 102, 241, 0.15); box-shadow: 0 10px 30px rgba(0,0,0,0.03); }
body.light-theme .stat-val { color: #0f172a; text-shadow: none; }
body.light-theme .stat-label { color: #64748b; }
body.light-theme .stat-box.highlight { background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(6, 182, 212, 0.05)); border-color: rgba(79, 70, 229, 0.3); }

body.light-theme .stat-badge {
    background: #fff; color: #0f172a; border-color: rgba(0,0,0,0.1); box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
body.light-theme .stat-box {
    background: rgba(255,255,255,0.9); border-color: rgba(0,0,0,0.05);
}
body.light-theme .stat-val { color: #0f172a; text-shadow: none; }
body.light-theme .results-view h2 {
    background: linear-gradient(135deg, #0f172a, var(--accent-1));
    -webkit-background-clip: text;
}