/*
 * Cyberonites — Obsidian Dark Mode Design System
 * Inspired by Linear.app, Vercel, & GitHub Dark Mode.
 * Sleek, professional, high-contrast, comfortable for eyes.
 */

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

:root {
    /* Strict Qarena Spider-Man Cybersecurity Palette */
    --spider-red: #E62429;
    --spider-red-hover: #c9181d;
    --spider-crimson: #9D0B18;
    --spider-red-glow: rgba(230, 36, 41, 0.4);
    --spider-red-subtle: rgba(230, 36, 41, 0.12);

    /* Electric Cyan & Spider Blue */
    --electric-cyan: #00CFFF;
    --electric-blue: #00CFFF;
    --electric-blue-hover: #38d6ff;
    --spider-blue: #1479FF;
    --cobalt: #1479FF;
    --deep-cobalt: #0a4ebd;
    --sky: #00CFFF;
    --sky-hover: #38d6ff;
    --indigo: #1479FF;
    --indigo-hover: #0a4ebd;
    
    /* Semantic Colors */
    --primary: var(--spider-red);
    --primary-hover: var(--spider-red-hover);
    --primary-glow: var(--spider-red-glow);
    --secondary: var(--electric-cyan);
    --secondary-hover: var(--electric-blue-hover);
    --success: #10b981;
    --emerald: #10b981;
    --warning: #f59e0b;
    --amber: #f59e0b;
    --danger: var(--spider-red);
    --crimson: #E62429;
    
    /* Obsidian & Navy Layer Hierarchy */
    --bg-dark: #07090E;
    --bg-secondary: #0B1018;
    --bg-surface: #111722;
    --bg-card: rgba(17, 23, 34, 0.9);
    --bg-card-hover: rgba(23, 32, 48, 0.96);
    --bg-input: rgba(11, 16, 24, 0.95);
    --bg-glass-light: rgba(255, 255, 255, 0.03);
    --bg-glass-strong: rgba(255, 255, 255, 0.06);
    
    /* High-Contrast Text Hierarchy */
    --text-primary: #F7F9FC;
    --text-secondary: #B3BDCB;
    --text-muted: #7D8798;
    --text-light: #ffffff;
    
    /* Spacing Tokens */
    --section-py: 90px;
    --section-gap: 32px;
    
    /* Borders & Shadows */
    --border-card: rgba(255, 255, 255, 0.09);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-focus: rgba(230, 36, 41, 0.5);
    --border-blue: rgba(0, 207, 255, 0.3);
    --border-red: rgba(230, 36, 41, 0.35);
    --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.75);
    --shadow-glow: 0 0 24px rgba(230, 36, 41, 0.25);
    --shadow-blue-glow: 0 0 24px rgba(0, 207, 255, 0.25);
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, #E62429 0%, #ff4b59 100%);
    --grad-cyber: linear-gradient(135deg, #00CFFF 0%, #1479FF 100%);
    --grad-spider-cyber: linear-gradient(135deg, #E62429 0%, #00CFFF 100%);
    --grad-accent: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --grad-danger: linear-gradient(135deg, #E62429 0%, #9D0B18 100%);
    --grad-hero-text: linear-gradient(135deg, #ffffff 0%, #F7F9FC 45%, #B3BDCB 100%);
    --grad-card: linear-gradient(145deg, rgba(17, 23, 34, 0.94) 0%, rgba(11, 16, 24, 0.98) 100%);
    
    /* Radii */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Fonts */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

a {
    color: var(--sky);
    text-decoration: none;
    transition: all 0.2s ease;
}
a:hover {
    color: #38bdf8;
}

/* ============================================================
   Clean 2D Technical Background (Zero 3D Gimmicks)
   ============================================================ */
.cyber-bg {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: -2;
    background: #07090E;
    overflow: hidden;
    pointer-events: none;
}

/* Atmospheric Transparent Background with Subtle Blur */
.cyber-bg .bg-art-layer {
    position: absolute;
    inset: -30px;
    background-size: cover;
    background-position: center 20%;
    opacity: 0.16;
    filter: blur(10px) contrast(115%);
    -webkit-filter: blur(10px) contrast(115%);
    transform: scale(1.05);
    mix-blend-mode: screen;
    pointer-events: none;
}

/* Crisp 2D Dot Matrix & Architectural Engineering Grid */
.cyber-bg .grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(rgba(255, 255, 255, 0.09) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 24px 24px, 72px 72px, 72px 72px;
    background-position: 0 0, 0 0, 0 0;
    mask-image: radial-gradient(ellipse 90% 70% at 50% 25%, #000 40%, transparent 95%);
    -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 25%, #000 40%, transparent 95%);
}

/* Subtle 2D Ambient Linear Washes (Flat, Elegant, Zero 3D Spheres) */
.cyber-bg .web-pattern-overlay {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 10% 8%, rgba(230, 36, 41, 0.06) 0%, transparent 45%),
        radial-gradient(circle at 90% 12%, rgba(0, 207, 255, 0.05) 0%, transparent 45%),
        linear-gradient(180deg, rgba(11, 16, 24, 0.4) 0%, rgba(7, 9, 14, 0.95) 100%);
    pointer-events: none;
}

/* ============================================================
   Obsidian Cards
   ============================================================ */
.glass-card, .glass-card-static {
    background: var(--grad-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-card), var(--shadow-glow);
    transform: translateY(-2px);
}

/* Gradients & Text */
.text-gradient {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.brand-title {
    font-family: var(--font-heading);
    font-weight: 800;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-cyber {
    padding: 11px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: 0.3px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-cyber-primary {
    background: var(--indigo);
    color: #fff;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}
.btn-cyber-primary:hover {
    background: var(--indigo-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}

.btn-cyber-accent {
    background: var(--emerald);
    color: #fff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}
.btn-cyber-accent:hover {
    background: #059669;
    color: #fff;
    transform: translateY(-1px);
}

.btn-cyber-danger {
    background: var(--crimson);
    color: #fff;
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}
.btn-cyber-danger:hover {
    background: #dc2626;
    color: #fff;
}

.btn-cyber-outline {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--border-card);
}
.btn-cyber-outline:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--text-secondary);
    color: #fff;
}

/* ============================================================
   Form Controls
   ============================================================ */
.form-control, .form-select {
    background: var(--bg-input) !important;
    border: 1px solid var(--border-card) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md) !important;
    padding: 12px 16px !important;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--indigo) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2) !important;
}

.input-group > .form-control:not(:first-child) {
    border-top-left-radius: 0 !important;
    border-bottom-left-radius: 0 !important;
}
.input-group > .input-group-text:first-child {
    border-top-right-radius: 0 !important;
    border-bottom-right-radius: 0 !important;
    background: var(--bg-input) !important;
    border-color: var(--border-card) !important;
    color: var(--text-secondary) !important;
}

.form-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.88rem;
    margin-bottom: 6px;
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar-cyber {
    background: rgba(10, 13, 20, 0.95) !important;
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-card);
    padding: 12px 0;
}

.navbar-brand-cyber {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link-cyber {
    color: var(--text-secondary) !important;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 8px 16px !important;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}
.nav-link-cyber:hover, .nav-link-cyber.active {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.05);
}

/* ============================================================
   Quiz Engine & Timer
   ============================================================ */
.quiz-timer {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--sky);
    padding: 10px 22px;
    border-radius: var(--radius-md);
    background: rgba(14, 165, 233, 0.08);
    border: 1px solid rgba(14, 165, 233, 0.25);
}

.timer-warning { color: var(--amber) !important; border-color: var(--amber) !important; }
.timer-critical { color: var(--crimson) !important; border-color: var(--crimson) !important; }

/* Question text & option cards */
.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.question-text {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.7;
    color: #ffffff !important;
    padding: 22px 26px;
    background: rgba(16, 24, 40, 0.95);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 242, 254, 0.25);
    border-left: 5px solid #00f2fe;
    margin-bottom: 24px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.options-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 24px;
}

.option-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    border-radius: var(--radius-md);
    background: rgba(18, 27, 44, 0.9);
    border: 1.5px solid rgba(255, 255, 255, 0.12);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.option-card:hover {
    background: rgba(28, 42, 70, 0.98);
    border-color: rgba(0, 242, 254, 0.45);
    transform: translateX(4px);
}

.option-card.selected {
    background: rgba(0, 242, 254, 0.12) !important;
    border-color: #00f2fe !important;
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.2) !important;
}

.option-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1rem;
    color: #00f2fe;
    border: 1px solid rgba(0, 242, 254, 0.3);
    flex-shrink: 0;
}

.option-card.selected .option-letter {
    background: #00f2fe;
    color: #080c14;
    border: none;
}

.option-text {
    font-size: 1.08rem;
    font-weight: 600;
    color: #ffffff !important;
    flex-grow: 1;
    line-height: 1.5;
}

.option-check {
    color: #00f2fe;
    font-size: 1.25rem;
    margin-left: auto;
}

/* Palette */
.palette-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
}

.palette-btn {
    width: 100%;
    aspect-ratio: 1;
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    background: rgba(15, 20, 32, 0.8);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.palette-btn:hover { border-color: var(--indigo); }
.palette-btn.current {
    border: 2px solid var(--indigo) !important;
    background: rgba(99, 102, 241, 0.35) !important;
    color: #ffffff !important;
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.6) !important;
    font-weight: 800;
}
.palette-btn.answered { background: rgba(16, 185, 129, 0.15); border-color: var(--emerald); color: var(--emerald); }
.palette-btn.review { background: rgba(245, 158, 11, 0.15); border-color: var(--amber); color: var(--amber); }
.palette-btn.not-visited { background: rgba(255, 255, 255, 0.02); color: var(--text-muted); }

.legend-badge.answered { background: rgba(16, 185, 129, 0.15); border: 1px solid var(--emerald); color: var(--emerald); }
.legend-badge.review { background: rgba(245, 158, 11, 0.15); border: 1px solid var(--amber); color: var(--amber); }
.legend-badge.not-visited { background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border-card); color: var(--text-muted); }



/* Progress */
.progress-cyber {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}
.progress-cyber .progress-bar {
    background: var(--grad-primary);
}

/* ============================================================
   CHAMPIONSHIP ARENA LEADERBOARD (ESPORTS CYBER THEME)
   ============================================================ */

/* Hero Banner & Live Status */
.leaderboard-hero {
    position: relative;
    padding: 2.2rem 1.5rem 1.8rem;
    background: radial-gradient(circle at 50% 0%, rgba(0, 242, 254, 0.12) 0%, rgba(15, 23, 42, 0.5) 75%);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 20px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 242, 254, 0.1);
    margin-bottom: 2rem;
    overflow: hidden;
}

.leaderboard-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--sky), transparent);
}

.live-pulse-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 14px;
    border-radius: 50px;
    background: rgba(0, 255, 135, 0.1);
    border: 1px solid rgba(0, 255, 135, 0.35);
    color: var(--emerald);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    box-shadow: 0 0 16px rgba(0, 255, 135, 0.2);
}

.live-pulse-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--emerald);
    box-shadow: 0 0 10px var(--emerald);
    animation: livePulseAnim 1.6s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes livePulseAnim {
    0% { transform: scale(0.9); opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 135, 0.7); }
    70% { transform: scale(1.1); opacity: 0.9; box-shadow: 0 0 0 8px rgba(0, 255, 135, 0); }
    100% { transform: scale(0.9); opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 135, 0); }
}

.lb-meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 15px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    font-size: 0.84rem;
    color: #cbd5e1;
    backdrop-filter: blur(8px);
}
.lb-meta-pill strong {
    color: #ffffff;
    font-weight: 700;
}

/* ============================================================
   Top 3 Professional Cyber Podium
   ============================================================ */
.pro-podium-deck {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 16px;
    margin-bottom: 2rem;
}

.pro-podium-slot {
    flex: 1;
    max-width: 320px;
    transition: all 0.25s ease;
}

.pro-podium-card {
    background: rgba(15, 23, 42, 0.82);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 22px 18px 18px;
    text-align: center;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.pro-podium-card:hover {
    transform: translateY(-3px);
}

/* 1st Place - Center */
.pro-podium-slot-1 {
    order: 2;
    transform: translateY(-8px);
}
.pro-podium-slot-1 .pro-podium-card {
    border: 1.5px solid rgba(234, 179, 8, 0.5);
    background: linear-gradient(180deg, rgba(234, 179, 8, 0.08) 0%, rgba(15, 23, 42, 0.94) 80%);
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.6), 0 0 20px rgba(234, 179, 8, 0.12);
}

/* 2nd Place - Left */
.pro-podium-slot-2 {
    order: 1;
}
.pro-podium-slot-2 .pro-podium-card {
    border: 1.5px solid rgba(226, 232, 240, 0.3);
}

/* 3rd Place - Right */
.pro-podium-slot-3 {
    order: 3;
}
.pro-podium-slot-3 .pro-podium-card {
    border: 1.5px solid rgba(217, 119, 6, 0.3);
}

.pro-podium-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 12px;
}
.pro-podium-slot-1 .pro-podium-badge {
    background: rgba(234, 179, 8, 0.15);
    color: #fbbf24;
    border: 1px solid rgba(234, 179, 8, 0.35);
}
.pro-podium-slot-2 .pro-podium-badge {
    background: rgba(226, 232, 240, 0.12);
    color: #e2e8f0;
    border: 1px solid rgba(226, 232, 240, 0.3);
}
.pro-podium-slot-3 .pro-podium-badge {
    background: rgba(217, 119, 6, 0.15);
    color: #f59e0b;
    border: 1px solid rgba(217, 119, 6, 0.3);
}

.pro-podium-avatar {
    width: 48px;
    height: 48px;
    margin: 0 auto 10px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
    color: #0f172a;
}
.pro-podium-slot-1 .pro-podium-avatar {
    background: linear-gradient(135deg, #facc15, #eab308);
    box-shadow: 0 0 16px rgba(234, 179, 8, 0.35);
}
.pro-podium-slot-2 .pro-podium-avatar {
    background: linear-gradient(135deg, #f1f5f9, #cbd5e1);
    box-shadow: 0 0 12px rgba(226, 232, 240, 0.25);
}
.pro-podium-slot-3 .pro-podium-avatar {
    background: linear-gradient(135deg, #fb923c, #d97706);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(217, 119, 6, 0.25);
}

.pro-podium-name {
    font-size: 1.05rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pro-podium-college {
    font-size: 0.78rem;
    color: #94a3b8;
    margin-bottom: 12px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pro-podium-score {
    font-family: var(--font-heading);
    font-size: 1.7rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 8px;
}
.pro-podium-slot-1 .pro-podium-score { color: #fbbf24; }
.pro-podium-slot-2 .pro-podium-score { color: #f1f5f9; }
.pro-podium-slot-3 .pro-podium-score { color: #f59e0b; }

.pro-podium-stats {
    display: flex;
    justify-content: center;
    gap: 12px;
    font-size: 0.78rem;
    color: #94a3b8;
    padding-top: 8px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.pro-podium-empty {
    background: rgba(15, 23, 42, 0.45) !important;
    border: 1px dashed rgba(255, 255, 255, 0.12) !important;
}

@media (max-width: 767px) {
    .pro-podium-deck {
        flex-direction: column;
        align-items: stretch;
    }
    .pro-podium-slot {
        max-width: 100%;
    }
    .pro-podium-slot-1 {
        order: 1;
        transform: none;
    }
    .pro-podium-slot-2 {
        order: 2;
    }
    .pro-podium-slot-3 {
        order: 3;
    }
}

/* ============================================================
   Controls Bar: Search & Filter Tabs
   ============================================================ */
.lb-controls-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.lb-search-box {
    position: relative;
    min-width: 260px;
    flex: 1;
    max-width: 420px;
}

.lb-search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--sky);
    font-size: 0.9rem;
    pointer-events: none;
}

.lb-search-input {
    width: 100%;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(0, 242, 254, 0.2);
    border-radius: 12px;
    padding: 9px 14px 9px 38px;
    color: #ffffff;
    font-size: 0.88rem;
    outline: none;
    transition: all 0.2s ease;
}
.lb-search-input:focus {
    border-color: var(--sky);
    box-shadow: 0 0 16px rgba(0, 242, 254, 0.3);
    background: rgba(15, 23, 42, 0.95);
}

.lb-filter-btn {
    padding: 7px 14px;
    border-radius: 10px;
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #94a3b8;
    cursor: pointer;
    transition: all 0.2s ease;
}
.lb-filter-btn:hover {
    background: rgba(0, 242, 254, 0.08);
    color: var(--sky);
    border-color: rgba(0, 242, 254, 0.3);
}
.lb-filter-btn.active {
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(79, 172, 254, 0.2));
    border-color: var(--sky);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(0, 242, 254, 0.25);
}

/* ============================================================
   Rankings Cyber Table
   ============================================================ */
.leaderboard-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 8px;
    margin-bottom: 0;
}

.leaderboard-table thead th {
    background: transparent;
    color: var(--sky);
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.9px;
    padding: 10px 16px;
    border: none;
    white-space: nowrap;
}

.leaderboard-row {
    background: rgba(15, 23, 42, 0.72);
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.leaderboard-row:hover {
    background: rgba(22, 34, 56, 0.95);
    border-color: rgba(0, 242, 254, 0.3);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5), 0 0 15px rgba(0, 242, 254, 0.12);
    transform: translateY(-2px);
}

.leaderboard-row td {
    padding: 14px 16px;
    vertical-align: middle;
    border: none;
    color: #e2e8f0;
}

.leaderboard-row td:first-child {
    border-top-left-radius: 14px;
    border-bottom-left-radius: 14px;
    border-left: 2px solid transparent;
}
.leaderboard-row td:last-child {
    border-top-right-radius: 14px;
    border-bottom-right-radius: 14px;
}

/* Medal & Rank Badges */
.rank-badge-wrap {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 38px;
    height: 34px;
    padding: 0 8px;
    border-radius: 10px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: -0.2px;
}

.rank-badge-gold {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 145, 0, 0.25));
    border: 1px solid #ffd700;
    color: #ffd700;
    box-shadow: 0 0 14px rgba(255, 215, 0, 0.3);
}

.rank-badge-silver {
    background: linear-gradient(135deg, rgba(226, 232, 240, 0.15), rgba(148, 163, 184, 0.2));
    border: 1px solid #e2e8f0;
    color: #f1f5f9;
    box-shadow: 0 0 12px rgba(226, 232, 240, 0.25);
}

.rank-badge-bronze {
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.2), rgba(120, 53, 15, 0.25));
    border: 1px solid #f59e0b;
    color: #f59e0b;
    box-shadow: 0 0 12px rgba(217, 119, 6, 0.25);
}

.rank-badge-top10 {
    background: rgba(0, 242, 254, 0.08);
    border: 1px solid rgba(0, 242, 254, 0.3);
    color: var(--sky);
}

.rank-badge-standard {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #94a3b8;
}

/* Rank Change Indicators */
.rank-delta-pill {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 6px;
}
.rank-delta-up {
    background: rgba(0, 255, 135, 0.15);
    color: var(--emerald);
}
.rank-delta-down {
    background: rgba(255, 71, 87, 0.15);
    color: var(--crimson);
}
.rank-delta-same {
    color: #64748b;
}

/* Participant Profile Cell */
.lb-user-cell {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lb-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
    background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(79, 172, 254, 0.2));
    border: 1.5px solid rgba(0, 242, 254, 0.4);
    color: var(--sky);
    flex-shrink: 0;
}

.participant-name {
    font-weight: 700;
    color: #ffffff;
    font-size: 0.95rem;
    line-height: 1.3;
}

.participant-college {
    font-size: 0.78rem;
    color: #94a3b8;
    line-height: 1.2;
}

.lb-badge-you {
    font-size: 0.68rem;
    font-weight: 800;
    padding: 2px 7px;
    border-radius: 6px;
    background: linear-gradient(135deg, var(--sky), #00ff87);
    color: #040814;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 6px;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.5);
}

/* Score, Accuracy, Time */
.score-value {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.22rem;
    color: var(--emerald);
    text-shadow: 0 0 12px rgba(0, 255, 135, 0.25);
}

.lb-accuracy-bar-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
}
.lb-accuracy-bar {
    width: 60px;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 10px;
    overflow: hidden;
}
.lb-accuracy-fill {
    height: 100%;
    border-radius: 10px;
    transition: width 0.4s ease;
}

/* Highlight Current User Row */
.leaderboard-row.lb-row-you,
tr.lb-row-you {
    background: rgba(0, 242, 254, 0.09) !important;
}
.leaderboard-row.lb-row-you td:first-child,
tr.lb-row-you td:first-child {
    border-left: 3px solid var(--sky) !important;
}

/* Rank Movement Animations */
.leaderboard-row.rank-up {
    animation: rankUpGlow 1.2s ease;
}
@keyframes rankUpGlow {
    0% { background: rgba(0, 255, 135, 0.3); transform: scale(1.01); }
    100% { background: rgba(15, 23, 42, 0.72); transform: scale(1); }
}

.leaderboard-row.rank-down {
    animation: rankDownGlow 1.2s ease;
}
@keyframes rankDownGlow {
    0% { background: rgba(255, 71, 87, 0.3); transform: scale(0.99); }
    100% { background: rgba(15, 23, 42, 0.72); transform: scale(1); }
}

/* ============================================================
   Responsive Tweaks for Leaderboard
   ============================================================ */
@media (max-width: 991px) {
    .podium-deck {
        gap: 0.75rem;
    }
    .podium-card {
        padding: 1.4rem 1rem 1.2rem;
    }
    .podium-crown {
        font-size: 2.1rem;
    }
    .podium-score {
        font-size: 1.8rem;
    }
}

@media (max-width: 767px) {
    .podium-deck {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    .podium-slot {
        max-width: 100%;
    }
    .podium-slot-1 {
        order: 1;
        transform: none;
    }
    .podium-slot-2 {
        order: 2;
    }
    .podium-slot-3 {
        order: 3;
    }
    .podium-slot-1:hover {
        transform: none;
    }
    .lb-controls-wrap {
        flex-direction: column;
        align-items: stretch;
    }
    .lb-search-box {
        max-width: 100%;
    }
    .leaderboard-table th, 
    .leaderboard-table td {
        padding: 10px 10px;
    }
    .hide-mobile {
        display: none !important;
    }
}

/* Auth */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: 40px 32px;
    background: var(--grad-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
}

.auth-logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 6px;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 28px;
    font-size: 0.9rem;
}

/* Admin Sidebar & Layout */
.admin-sidebar {
    width: 260px;
    height: 100vh;
    background: #060911;
    border-right: 1px solid rgba(0, 242, 254, 0.15);
    padding: 20px 0;
    position: fixed;
    top: 0; left: 0;
    z-index: 1000;
    overflow-y: auto;
}

.admin-content {
    margin-left: 260px;
    padding: 32px 36px;
    min-height: 100vh;
    max-width: 1600px;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.94rem;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.sidebar-link:hover, .sidebar-link.active {
    color: var(--sky);
    background: rgba(0, 242, 254, 0.06);
    border-left-color: var(--sky);
    box-shadow: inset 4px 0 12px rgba(0, 242, 254, 0.15);
}

.stat-card {
    padding: 24px 18px;
    border-radius: var(--radius-lg);
    background: var(--grad-card);
    border: 1px solid var(--border-card);
    text-align: center;
    transition: all 0.2s ease;
}
.stat-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-2px);
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-top: 4px;
}

/* Result Stats */
.result-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 14px;
}

.result-stat {
    text-align: center;
    padding: 20px 14px;
    border-radius: var(--radius-md);
    background: var(--grad-card);
    border: 1px solid var(--border-card);
}

.result-stat-value {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
}

.result-stat-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Toasts */
#toast-container {
    position: fixed;
    top: 20px; right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.cyber-toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-radius: var(--radius-md);
    background: rgba(18, 24, 38, 0.95);
    border: 1px solid var(--border-card);
    box-shadow: var(--shadow-card);
    transform: translateX(120%);
    transition: transform 0.3s ease;
    max-width: 400px;
}

.cyber-toast.show { transform: translateX(0); }
.cyber-toast-success { border-left: 4px solid var(--emerald); }
.cyber-toast-error { border-left: 4px solid var(--crimson); }
.cyber-toast-warning { border-left: 4px solid var(--amber); }
.cyber-toast-info { border-left: 4px solid var(--sky); }

.badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(99, 102, 241, 0.5); }

/* ============================================================
   Nav Pills & Tabs Styling
   ============================================================ */
.nav-pills .nav-link.active, .nav-pills .show > .nav-link {
    background: var(--indigo) !important;
    color: #fff !important;
    border-color: var(--indigo) !important;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.nav-pills .nav-link {
    border-radius: var(--radius-md) !important;
    font-family: var(--font-heading);
    font-weight: 600;
    transition: all 0.2s ease;
}

/* ============================================================
   Comprehensive Responsive Media Queries
   ============================================================ */
/* Sidebar Backdrop for Mobile */
.sidebar-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(4, 7, 14, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1025;
}
.sidebar-backdrop.show {
    display: block;
}

@media (max-width: 992px) {
    .admin-sidebar {
        transform: translateX(-100%);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.85);
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1045;
    }
    .admin-sidebar.show {
        transform: translateX(0);
    }
    .admin-content {
        margin-left: 0;
        padding: 18px 14px;
    }
    .palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
    }
}

@media (max-width: 768px) {
    .auth-card {
        padding: 28px 18px;
        border-radius: var(--radius-lg);
    }
    .auth-logo {
        font-size: 1.8rem;
    }
    .quiz-timer {
        font-size: 1.25rem;
        padding: 6px 14px;
    }
    .question-text {
        font-size: 1.02rem;
        padding: 14px 16px;
    }
    .option-card {
        padding: 12px 14px;
        gap: 10px;
    }
    .option-letter {
        width: 30px; height: 30px;
        font-size: 0.82rem;
    }
    .stat-value {
        font-size: 1.7rem;
    }
    .result-stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .navbar-brand-cyber {
        font-size: 1.2rem;
    }
    #toast-container {
        left: 12px; right: 12px;
        top: 12px;
    }
    .cyber-toast {
        max-width: 100%;
    }
}

@media (max-width: 576px) {
    .form-control, .form-select {
        font-size: 16px !important; /* Prevents auto-zoom on iOS safari */
        padding: 10px 14px !important;
    }
    .btn-cyber:not(.btn-sm):not(.w-auto):not(.btn-auto) {
        padding: 11px 18px;
        font-size: 0.88rem;
        width: 100%;
    }
    .btn-cyber.btn-sm {
        padding: 5px 10px;
        font-size: 0.78rem;
        white-space: nowrap;
    }
    .palette-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 6px;
    }
    .palette-btn {
        font-size: 0.85rem;
    }
    .leaderboard-table th, .leaderboard-table td {
        padding: 10px 12px;
        font-size: 0.85rem;
    }
    .rank-number {
        font-size: 1rem;
    }
    .container, .container-fluid {
        padding-left: 10px !important;
        padding-right: 10px !important;
    }
    .glass-card, .glass-card-static {
        padding: 16px !important;
        border-radius: 14px !important;
    }
    .question-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .question-actions {
        flex-wrap: wrap;
        width: 100%;
    }
    .btn-review, .btn-clear {
        width: 100%;
        margin-bottom: 6px;
    }
    .table-responsive {
        border-radius: 10px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .modal-dialog {
        margin: 10px;
    }
    .modal-dialog.modal-xl {
        max-width: calc(100vw - 20px);
    }
    .fullscreen-overlay .glass-card-static {
        margin: 16px;
        padding: 24px 16px !important;
    }
}

/* ============================================================
   Glassmorphic Cyber Tables
   ============================================================ */
.table-cyber {
    --bs-table-bg: transparent !important;
    --bs-table-accent-bg: transparent !important;
    --bs-table-striped-bg: transparent !important;
    --bs-table-hover-bg: rgba(14, 165, 233, 0.05) !important;
    background: transparent !important;
    color: var(--text-primary) !important;
    border-collapse: separate !important;
    border-spacing: 0 !important;
    width: 100% !important;
    margin-bottom: 0 !important;
}

.table-cyber th,
.table-cyber td {
    background: transparent !important;
    color: #e2e8f0 !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06) !important;
    border-top: none !important;
    padding: 13px 16px !important;
    vertical-align: middle !important;
}

.table-cyber thead th {
    background: rgba(14, 165, 233, 0.08) !important;
    color: var(--sky) !important;
    font-size: 0.78rem !important;
    font-weight: 700 !important;
    text-transform: uppercase !important;
    letter-spacing: 0.8px !important;
    border-bottom: 1.5px solid rgba(14, 165, 233, 0.25) !important;
    white-space: nowrap !important;
}

.table-cyber thead th:first-child {
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}

.table-cyber thead th:last-child {
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
}

.table-cyber tbody tr {
    background: transparent !important;
    transition: background 0.2s ease !important;
}

.table-cyber tbody tr:hover td {
    background: rgba(14, 165, 233, 0.04) !important;
}

.table-cyber tbody tr:last-child td {
    border-bottom: none !important;
}

/* Global Dark Table Transparency Override for Glass Cards */
.table-responsive {
    background: transparent !important;
}

.table-dark,
.table-dark > :not(caption) > * > *,
.glass-card .table-dark,
.glass-card-static .table-dark {
    --bs-table-bg: transparent !important;
    --bs-table-accent-bg: transparent !important;
    --bs-table-striped-bg: transparent !important;
    --bs-table-hover-bg: rgba(14, 165, 233, 0.05) !important;
    background-color: transparent !important;
    color: var(--text-primary) !important;
}

/* ============================================================
   GLOBAL SPIDER-MAN REUSABLE DESIGN UTILITIES
   ============================================================ */

/* Spider Cards */
.spider-card {
    background: linear-gradient(145deg, rgba(17, 21, 29, 0.92) 0%, rgba(11, 18, 32, 0.96) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}
.spider-card-red {
    border-top: 2.5px solid var(--spider-red);
}
.spider-card-red:hover {
    border-color: rgba(229, 37, 53, 0.5);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.8), 0 0 25px rgba(229, 37, 53, 0.3);
    transform: translateY(-3px);
}
.spider-card-blue {
    border-top: 2.5px solid var(--electric-blue);
}
.spider-card-blue:hover {
    border-color: rgba(0, 210, 255, 0.5);
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.8), 0 0 25px rgba(0, 210, 255, 0.3);
    transform: translateY(-3px);
}

/* Engineered Spider-Web Corner Accents */
.spider-web-corner {
    position: absolute;
    width: 68px;
    height: 68px;
    pointer-events: none;
    opacity: 0.35;
    background-image: url('../images/web_corner.svg');
    background-size: contain;
    background-repeat: no-repeat;
    z-index: 2;
    transition: opacity 0.3s ease;
}
.spider-card:hover .spider-web-corner {
    opacity: 0.65;
}
.spider-web-corner-tl { top: 0; left: 0; }
.spider-web-corner-tr { top: 0; right: 0; transform: scaleX(-1); }
.spider-web-corner-bl { bottom: 0; left: 0; transform: scaleY(-1); }
.spider-web-corner-br { bottom: 0; right: 0; transform: scale(-1); }

/* Spider Crest Icon */
.spider-crest-img {
    width: 28px;
    height: 28px;
    display: inline-block;
    vertical-align: middle;
    filter: drop-shadow(0 0 8px rgba(229, 37, 53, 0.45));
}

/* Spider Badges */
.spider-badge-red {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 50px;
    background: rgba(229, 37, 53, 0.12);
    border: 1px solid rgba(229, 37, 53, 0.4);
    color: #ff5e6c;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.6px;
    box-shadow: 0 0 14px rgba(229, 37, 53, 0.2);
}
.spider-badge-blue {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 50px;
    background: rgba(0, 210, 255, 0.12);
    border: 1px solid rgba(0, 210, 255, 0.35);
    color: var(--electric-blue);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.6px;
    box-shadow: 0 0 14px rgba(0, 210, 255, 0.2);
}

/* Auth Pages Enhancement & Split Screen */
.auth-split-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: stretch;
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.auth-visual-col {
    flex: 1 1 50%;
    position: relative;
    background-image: url('../images/spiderman_auth.jpg?v=3');
    background-size: cover;
    background-position: center top;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 3.5rem;
    overflow: hidden;
}

.auth-visual-col::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 9, 14, 0.4) 0%, rgba(7, 9, 14, 0.85) 70%, #07090e 100%);
    z-index: 1;
}

.auth-visual-col::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 30%, rgba(229, 37, 53, 0.22) 0%, transparent 60%),
                      radial-gradient(circle at 80% 80%, rgba(0, 210, 255, 0.15) 0%, transparent 50%);
    z-index: 2;
    pointer-events: none;
}

.auth-visual-content {
    position: relative;
    z-index: 3;
}

.auth-form-col {
    flex: 1 1 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 2rem;
    position: relative;
    z-index: 5;
    background: radial-gradient(circle at 50% 50%, #0b1220 0%, #07090e 100%);
}

.auth-container {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 1rem;
}

.auth-card {
    background: linear-gradient(145deg, rgba(17, 21, 29, 0.95) 0%, rgba(11, 18, 32, 0.98) 100%);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1.5px solid rgba(229, 37, 53, 0.35);
    border-top: 3px solid var(--spider-red);
    border-radius: 22px;
    padding: 2.75rem 2.25rem;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.85), 0 0 35px rgba(229, 37, 53, 0.2);
    position: relative;
    overflow: hidden;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.92rem;
    text-align: center;
    margin-bottom: 2rem;
}

.password-toggle-btn {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    z-index: 10;
    transition: color 0.2s ease;
}
.password-toggle-btn:hover {
    color: var(--spider-red);
}

/* Spider Input Focus Enhancement */
.auth-card input.form-control {
    background: rgba(7, 9, 14, 0.9);
    border: 1.5px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-radius: 12px;
    padding: 12px 16px;
    transition: all 0.25s ease;
}
.auth-card input.form-control:focus {
    background: rgba(11, 18, 32, 0.95);
    border-color: var(--spider-red);
    box-shadow: 0 0 0 4px rgba(229, 37, 53, 0.25), 0 0 16px rgba(229, 37, 53, 0.35);
    color: #ffffff;
}

/* Hero Section Split Layout Enhancement */
.hero-split-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2.5rem;
}
.hero-text-col {
    flex: 1 1 55%;
    text-align: left;
}
.hero-visual-col {
    flex: 1 1 45%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-character-frame {
    position: relative;
    width: 100%;
    max-width: 520px;
    border-radius: 28px;
    overflow: hidden;
    border: 1.5px solid rgba(229, 37, 53, 0.35);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.9), 0 0 45px rgba(229, 37, 53, 0.28);
    background: #07090e;
}
.hero-character-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transform: scale(1.01);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-character-frame:hover .hero-character-img {
    transform: scale(1.04);
}
.hero-overlay-scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 9, 14, 0.05) 0%, rgba(7, 9, 14, 0.45) 60%, rgba(7, 9, 14, 0.92) 100%);
    pointer-events: none;
}
.hero-telemetry-pill {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding: 14px 18px;
    background: rgba(11, 18, 32, 0.88);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 210, 255, 0.3);
    border-radius: 14px;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.hero-glow-sphere-red {
    position: absolute;
    width: 380px;
    height: 380px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(229, 37, 53, 0.25) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    filter: blur(50px);
    z-index: 0;
    pointer-events: none;
}
.hero-glow-sphere-blue {
    position: absolute;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 210, 255, 0.2) 0%, transparent 70%);
    top: 20%;
    right: -10%;
    filter: blur(60px);
    z-index: 0;
    pointer-events: none;
}

/* Tactical Exam Timer Alerts */
.spider-timer {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 12px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.15rem;
    transition: all 0.3s ease;
}
.spider-timer.timer-normal {
    background: rgba(0, 210, 255, 0.08);
    border: 1.5px solid rgba(0, 210, 255, 0.35);
    color: var(--electric-blue);
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.15);
}
.spider-timer.timer-warning {
    background: rgba(245, 158, 11, 0.12);
    border: 1.5px solid rgba(245, 158, 11, 0.5);
    color: var(--amber);
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.25);
}
.spider-timer.timer-critical {
    background: rgba(229, 37, 53, 0.2);
    border: 1.5px solid var(--spider-red);
    color: #ff4757;
    box-shadow: 0 0 20px rgba(229, 37, 53, 0.5);
    animation: spiderPulse 1.2s infinite ease-in-out;
}

@keyframes spiderPulse {
    0%, 100% {
        box-shadow: 0 0 16px rgba(229, 37, 53, 0.4);
        border-color: var(--spider-red);
    }
    50% {
        box-shadow: 0 0 28px rgba(229, 37, 53, 0.85);
        border-color: #ff6b81;
    }
}

/* Secure Browser Download Showcase Split */
.secure-showcase-container {
    display: flex;
    align-items: center;
    gap: 3rem;
}
.secure-visual-box {
    flex: 1 1 45%;
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    border: 1.5px solid rgba(229, 37, 53, 0.35);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9), 0 0 35px rgba(229, 37, 53, 0.25);
}
.secure-visual-box img {
    width: 100%;
    border-top: 3px solid var(--spider-red);
    border-radius: 22px;
    padding: 2.75rem 2.25rem;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.85), 0 0 35px rgba(229, 37, 53, 0.2);
    position: relative;
    overflow: hidden;
}

.auth-subtitle {
    color: var(--text-secondary);
    font-size: 0.92rem;
    text-align: center;
    margin-bottom: 2rem;
}

.password-toggle-btn {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    z-index: 10;
    transition: color 0.2s ease;
}
.password-toggle-btn:hover {
    color: var(--spider-red);
}

/* Spider Input Focus Enhancement */
.auth-card input.form-control {
    background: rgba(7, 9, 14, 0.9);
    border: 1.5px solid rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-radius: 12px;
    padding: 12px 16px;
    transition: all 0.25s ease;
}
.auth-card input.form-control:focus {
    background: rgba(11, 18, 32, 0.95);
    border-color: var(--spider-red);
    box-shadow: 0 0 0 4px rgba(229, 37, 53, 0.25), 0 0 16px rgba(229, 37, 53, 0.35);
    color: #ffffff;
}

/* Hero Section Split Layout Enhancement */
.hero-split-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2.5rem;
}
.hero-text-col {
    flex: 1 1 55%;
    text-align: left;
}
.hero-visual-col {
    flex: 1 1 45%;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-character-frame {
    position: relative;
    width: 100%;
    max-width: 520px;
    border-radius: 28px;
    overflow: hidden;
    border: 1.5px solid rgba(229, 37, 53, 0.35);
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.9), 0 0 45px rgba(229, 37, 53, 0.28);
    background: #07090e;
}
.hero-character-img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transform: scale(1.01);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-character-frame:hover .hero-character-img {
    transform: scale(1.04);
}
.hero-overlay-scrim {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 9, 14, 0.05) 0%, rgba(7, 9, 14, 0.45) 60%, rgba(7, 9, 14, 0.92) 100%);
    pointer-events: none;
}
.hero-telemetry-pill {
    position: absolute;
    bottom: 20px;
    left: 20px;
    right: 20px;
    padding: 14px 18px;
    background: rgba(11, 18, 32, 0.88);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(0, 210, 255, 0.3);
    border-radius: 14px;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.hero-glow-sphere-red,
.hero-glow-sphere-blue {
    display: none !important;
}

/* Tactical Exam Timer Alerts */
.spider-timer {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 12px;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.15rem;
    transition: all 0.3s ease;
}
.spider-timer.timer-normal {
    background: rgba(0, 210, 255, 0.08);
    border: 1.5px solid rgba(0, 210, 255, 0.35);
    color: var(--electric-blue);
    box-shadow: 0 0 12px rgba(0, 210, 255, 0.15);
}
.spider-timer.timer-warning {
    background: rgba(245, 158, 11, 0.12);
    border: 1.5px solid rgba(245, 158, 11, 0.5);
    color: var(--amber);
    box-shadow: 0 0 16px rgba(245, 158, 11, 0.25);
}
.spider-timer.timer-critical {
    background: rgba(229, 37, 53, 0.2);
    border: 1.5px solid var(--spider-red);
    color: #ff4757;
    box-shadow: 0 0 20px rgba(229, 37, 53, 0.5);
    animation: spiderPulse 1.2s infinite ease-in-out;
}

@keyframes spiderPulse {
    0%, 100% {
        box-shadow: 0 0 16px rgba(229, 37, 53, 0.4);
        border-color: var(--spider-red);
    }
    50% {
        box-shadow: 0 0 28px rgba(229, 37, 53, 0.85);
        border-color: #ff6b81;
    }
}

/* Secure Browser Download Showcase Split */
.secure-showcase-container {
    display: flex;
    align-items: center;
    gap: 3rem;
}
.secure-visual-box {
    flex: 1 1 45%;
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    border: 1.5px solid rgba(229, 37, 53, 0.35);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9), 0 0 35px rgba(229, 37, 53, 0.25);
}
.secure-visual-box img {
    width: 100%;
    display: block;
    object-fit: cover;
}
.secure-info-box {
    flex: 1 1 55%;
}

/* Responsive adjustments */
@media (max-width: 991px) {
    .auth-split-wrapper {
        flex-direction: column;
    }
    .auth-visual-col {
        display: none;
    }
    .auth-form-col {
        flex: 1 1 100%;
        min-height: 100vh;
    }
    .hero-split-row {
        flex-direction: column;
        text-align: center;
    }
    .hero-text-col {
        text-align: center;
    }
    .secure-showcase-container {
        flex-direction: column;
    }
}

/* ============================================================
   QARENA SECTION SPACING & CONTRAST NORMALIZATION
   ============================================================ */
section.py-5, .landing-section {
    padding-top: 85px !important;
    padding-bottom: 85px !important;
    position: relative;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.section-subtitle {
    color: var(--text-secondary) !important;
    font-size: 1.05rem;
    max-width: 650px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

.section-title {
    font-size: clamp(1.9rem, 3vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

/* ============================================================
   EXAMINATION MODE CARDS (EQUAL HEIGHT & ALIGNED CTAs)
   ============================================================ */
.mode-card {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2.25rem 2rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, rgba(17, 23, 34, 0.95) 0%, rgba(11, 16, 24, 0.98) 100%);
    box-shadow: var(--shadow-card);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mode-card:hover {
    transform: translateY(-4px);
}

.mode-card-unproctored {
    border: 1px solid rgba(0, 207, 255, 0.25);
    border-top: 3px solid var(--electric-cyan);
}
.mode-card-unproctored:hover {
    border-color: rgba(0, 207, 255, 0.6);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8), 0 0 28px rgba(0, 207, 255, 0.25);
}

.mode-card-proctored {
    border: 1px solid rgba(230, 36, 41, 0.3);
    border-top: 3px solid var(--spider-red);
}
.mode-card-proctored:hover {
    border-color: rgba(230, 36, 41, 0.6);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8), 0 0 28px rgba(230, 36, 41, 0.28);
}

/* ============================================================
   COMPARISON MATRIX (3-COLUMN HIGH CONTRAST)
   ============================================================ */
.comparison-wrapper {
    background: linear-gradient(145deg, rgba(17, 23, 34, 0.92) 0%, rgba(11, 16, 24, 0.98) 100%);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    position: relative;
}

.comparison-table {
    width: 100%;
    margin-bottom: 0;
    border-collapse: collapse;
}

.comparison-table thead th {
    background: rgba(7, 9, 14, 0.85);
    padding: 1.4rem 1.75rem;
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    border-bottom: 2px solid rgba(255, 255, 255, 0.1);
}

.comparison-table tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.2s ease;
}

.comparison-table tbody tr:last-child {
    border-bottom: none;
}

.comparison-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.025);
}

.comparison-table tbody td {
    padding: 1.2rem 1.75rem;
    vertical-align: middle;
    font-size: 0.94rem;
    color: var(--text-secondary);
}

.comparison-table .feature-label {
    font-weight: 600;
    color: #ffffff;
    display: block;
}

.comparison-table .feature-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ============================================================
   FEATURES 4-COLUMN RESPONSIVE GRID
   ============================================================ */
.features-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
}

.feature-card-qarena {
    background: linear-gradient(145deg, rgba(17, 23, 34, 0.88) 0%, rgba(11, 16, 24, 0.95) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 1.75rem 1.5rem;
    height: 100%;
    position: relative;
    overflow: hidden;
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.feature-card-qarena:hover {
    border-color: rgba(230, 36, 41, 0.4);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.7), 0 0 20px rgba(230, 36, 41, 0.2);
    transform: translateY(-3px);
}

.feature-icon-qarena {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: rgba(230, 36, 41, 0.12);
    border: 1px solid rgba(230, 36, 41, 0.35);
    color: var(--spider-red);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    flex-shrink: 0;
}

.feature-card-qarena:nth-child(even) .feature-icon-qarena {
    background: rgba(0, 207, 255, 0.12);
    border-color: rgba(0, 207, 255, 0.35);
    color: var(--electric-cyan);
}

/* ============================================================
   WORKFLOW DUAL-PATHWAY TIMELINE
   ============================================================ */
.workflow-lane {
    background: linear-gradient(145deg, rgba(17, 23, 34, 0.9) 0%, rgba(11, 16, 24, 0.96) 100%);
    border-radius: 20px;
    padding: 2.25rem 2rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    height: 100%;
    position: relative;
    overflow: hidden;
}

.workflow-lane-cyan {
    border-top: 3px solid var(--electric-cyan);
}

.workflow-lane-red {
    border-top: 3px solid var(--spider-red);
}

.workflow-node-qarena {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    position: relative;
    padding-bottom: 1.5rem;
}

.workflow-node-qarena:last-child {
    padding-bottom: 0;
}

.workflow-node-qarena::after {
    content: '';
    position: absolute;
    top: 36px;
    left: 17px;
    bottom: 0;
    width: 2px;
    background: rgba(255, 255, 255, 0.08);
}

.workflow-node-qarena:last-child::after {
    display: none;
}

.workflow-step-badge {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
    position: relative;
    z-index: 2;
}

.workflow-step-badge-cyan {
    background: rgba(0, 207, 255, 0.15);
    border: 1.5px solid var(--electric-cyan);
    color: var(--electric-cyan);
    box-shadow: 0 0 12px rgba(0, 207, 255, 0.25);
}

.workflow-step-badge-red {
    background: rgba(230, 36, 41, 0.15);
    border: 1.5px solid var(--spider-red);
    color: #ff6b81;
    box-shadow: 0 0 12px rgba(230, 36, 41, 0.25);
}

/* Responsive grid adjustments */
@media (max-width: 1200px) {
    .features-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .features-grid-4 {
        grid-template-columns: 1fr;
    }
    .comparison-table thead th,
    .comparison-table tbody td {
        padding: 0.9rem 1rem;
        font-size: 0.85rem;
    }
}

/* ==========================================================================
   QARENA FULLSCREEN CINEMATIC PRELOADER (MINIMAL CORNER-TO-CORNER)
   ========================================================================== */
body.intro-active {
    overflow: hidden !important;
}

.qarena-intro-preloader {
    position: fixed;
    inset: 0;
    z-index: 9999999;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    background: #05070A;
    overflow: hidden;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.6s ease;
}

.qarena-intro-preloader.preloader-fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.intro-bg-layer {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transform: scale(1.0);
    transition: opacity 0.9s cubic-bezier(0.4, 0, 0.2, 1), transform 3.5s cubic-bezier(0.25, 1, 0.5, 1);
    will-change: opacity, transform;
}

.intro-bg-layer.active {
    opacity: 1;
    transform: scale(1.05);
}

.intro-overlay-scrim {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(7, 9, 14, 0.1) 0%, rgba(7, 9, 14, 0.45) 75%, rgba(5, 7, 10, 0.75) 100%);
    pointer-events: none;
    z-index: 2;
}

/* Edge-to-Edge Bottom Corner-to-Corner Line */
.intro-bottom-bar-track {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.08);
    z-index: 10;
    overflow: hidden;
}

.intro-bottom-bar-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #E62429 0%, #00CFFF 70%, #00FF88 100%);
    box-shadow: 0 0 16px rgba(0, 207, 255, 0.9), 0 -2px 10px rgba(230, 36, 41, 0.8);
    transition: width 0.08s linear;
}