/**
 * CBT Garuda - Futuristic Cyberpunk & Glassmorphism Design System
 * Designed for High-Performance, Mobile-First, and Distraction-Free CBT Examinations.
 */

:root {
    --cbt-bg-deep: #080C14;
    --cbt-bg-card: rgba(15, 23, 42, 0.78);
    --cbt-border-glass: rgba(255, 255, 255, 0.08);
    --cbt-border-glow: rgba(6, 182, 212, 0.35);

    --neon-cyan: #06B6D4;
    --neon-cyan-hover: #22D3EE;
    --neon-cyan-glow: 0 0 16px rgba(6, 182, 212, 0.45);

    --neon-purple: #8B5CF6;
    --neon-purple-glow: 0 0 16px rgba(139, 92, 246, 0.45);

    --neon-emerald: #10B981;
    --neon-amber: #F59E0B;
    --neon-rose: #EF4444;

    --cbt-text-main: #F8FAFC;
    --cbt-text-sub: #94A3B8;
    --cbt-font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* Background Workspace */
body.cbt-exam-futuristic {
    background-color: var(--cbt-bg-deep) !important;
    background-image: 
        radial-gradient(circle at 10% 10%, rgba(6, 182, 212, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(139, 92, 246, 0.12) 0%, transparent 40%) !important;
    background-attachment: fixed !important;
    color: var(--cbt-text-main) !important;
    font-family: var(--cbt-font-sans) !important;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* Glassmorphism Panel */
.cbt-glass {
    background: var(--cbt-bg-card) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--cbt-border-glass) !important;
    border-radius: 16px !important;
    box-shadow: 0 12px 36px 0 rgba(0, 0, 0, 0.45) !important;
}

/* Futuristic Header */
.cbt-floating-header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--cbt-border-glass);
    padding: 12px 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Timer Display */
.cbt-timer-box {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid var(--neon-cyan);
    box-shadow: var(--neon-cyan-glow);
    padding: 6px 18px;
    border-radius: 30px;
    color: var(--neon-cyan);
    font-family: 'JetBrains Mono', Consolas, monospace;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.cbt-timer-box.warning-time {
    border-color: var(--neon-rose);
    color: var(--neon-rose);
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.5);
    animation: cbt-pulse 1.2s infinite alternate;
}

@keyframes cbt-pulse {
    0% { transform: scale(1); opacity: 0.9; }
    100% { transform: scale(1.04); opacity: 1; }
}

/* Connection & Sync Status Badge */
.cbt-sync-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cbt-sync-badge.synced {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: var(--neon-emerald);
}

.cbt-sync-badge.pending {
    background: rgba(245, 158, 11, 0.12);
    border: 1px solid rgba(245, 158, 11, 0.4);
    color: var(--neon-amber);
}

.cbt-sync-badge.offline {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.5);
    color: var(--neon-rose);
}

/* Question Option Container */
.cbt-option-item {
    display: flex;
    align-items: flex-start;
    padding: 14px 16px;
    margin-bottom: 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.025);
    border: 1px solid var(--cbt-border-glass);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    -webkit-tap-highlight-color: transparent;
}

.cbt-option-item:hover {
    background: rgba(6, 182, 212, 0.06);
    border-color: var(--cbt-border-glow);
    transform: translateY(-1px);
}

.cbt-option-item.selected {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%) !important;
    border-color: var(--neon-cyan) !important;
    box-shadow: var(--neon-cyan-glow) !important;
}

.cbt-option-key {
    min-width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-weight: 700;
    margin-right: 14px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--cbt-text-main);
    transition: all 0.2s ease;
}

.cbt-option-item.selected .cbt-option-key {
    background: var(--neon-cyan) !important;
    color: #000 !important;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
}

.cbt-option-text {
    flex: 1;
    color: var(--cbt-text-main);
    font-size: 1.05rem;
    line-height: 1.6;
    padding-top: 5px;
}

/* Question Number Navigation Grid */
.cbt-nav-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    max-height: 420px;
    overflow-y: auto;
    padding-right: 4px;
}

.cbt-nav-btn {
    height: 42px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    border: 1px solid var(--cbt-border-glass);
    background: rgba(255, 255, 255, 0.035);
    color: var(--cbt-text-sub);
    cursor: pointer;
    transition: all 0.2s ease;
}

.cbt-nav-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #FFF;
}

.cbt-nav-btn.answered {
    background: var(--neon-cyan) !important;
    color: #000 !important;
    font-weight: 700;
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.35);
    border-color: var(--neon-cyan);
}

.cbt-nav-btn.ragu {
    background: var(--neon-amber) !important;
    color: #000 !important;
    font-weight: 700;
    border-color: var(--neon-amber);
}

.cbt-nav-btn.current {
    border: 2px solid #FFF !important;
    transform: scale(1.06);
    box-shadow: 0 0 12px rgba(255, 255, 255, 0.4);
}

/* Navigation Drawer on Mobile */
@media (max-width: 991px) {
    .cbt-nav-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 6px;
    }
    .cbt-floating-header {
        padding: 10px 14px;
    }
    .cbt-timer-box {
        font-size: 1.05rem;
        padding: 4px 12px;
        letter-spacing: 1px;
    }
}