/* ============================================================
   STYLE.CSS - Sistem Test Online
   Design: Dark mode premium dengan glassmorphism
   ============================================================ */

:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.1);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.2);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.2);
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.2);
    --info: #06b6d4;
    --info-glow: rgba(6, 182, 212, 0.2);
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-3: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-4: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(ellipse at 10% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 90% 80%, rgba(6, 182, 212, 0.06) 0%, transparent 50%);
}

/* ============ NAVBAR ============ */
#mainNavbar {
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    padding: 0.5rem 0;
    z-index: 1050;
}

.brand-icon {
    width: 36px; height: 36px;
    background: var(--gradient-1);
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem; color: #fff;
}

.brand-text { font-weight: 700; font-size: 1.15rem; letter-spacing: -0.5px; }
.text-accent { color: var(--accent-light); }
.bg-accent { background: var(--gradient-1) !important; }

.navbar-nav .nav-link {
    color: var(--text-secondary); padding: 0.6rem 1rem;
    border-radius: var(--radius-sm); transition: var(--transition);
    font-size: 0.875rem; font-weight: 500;
}
.navbar-nav .nav-link:hover, .navbar-nav .nav-link.active {
    color: var(--text-primary); background: var(--bg-glass);
}

.user-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    background: var(--gradient-2);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.85rem; color: #fff;
}
.user-name { font-size: 0.85rem; font-weight: 600; color: var(--text-primary); display: block; line-height: 1.2; }
.user-role { font-size: 0.65rem; }
.btn-logout {
    border-color: rgba(255,255,255,0.15); font-size: 0.8rem;
    padding: 0.35rem 0.75rem; border-radius: var(--radius-sm);
}
.btn-logout:hover { background: var(--danger); border-color: var(--danger); }

/* ============ MAIN CONTENT ============ */
.main-content { min-height: calc(100vh - 130px); padding-top: 1rem; }

/* ============ CARDS ============ */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}
.glass-card:hover {
    border-color: rgba(255,255,255,0.15);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* Stat Cards */
.stat-card {
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute; top: 0; right: 0;
    width: 100px; height: 100px;
    border-radius: 50%;
    opacity: 0.1;
    transform: translate(30%, -30%);
}
.stat-card.purple::before { background: #6366f1; }
.stat-card.cyan::before { background: #06b6d4; }
.stat-card.green::before { background: #10b981; }
.stat-card.orange::before { background: #f59e0b; }

.stat-icon {
    width: 48px; height: 48px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; color: #fff; margin-bottom: 1rem;
}
.stat-icon.purple { background: var(--gradient-1); }
.stat-icon.cyan { background: var(--gradient-2); }
.stat-icon.green { background: var(--gradient-3); }
.stat-icon.orange { background: var(--gradient-4); }

.stat-value { font-size: 1.75rem; font-weight: 800; color: var(--text-primary); line-height: 1; }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); font-weight: 500; margin-top: 0.25rem; }

/* ============ TABLE ============ */
.table-glass {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--border-glass);
    font-size: 0.875rem;
}
.table-glass thead th {
    background: rgba(99, 102, 241, 0.1);
    border-bottom: 2px solid rgba(99, 102, 241, 0.3);
    font-weight: 600; font-size: 0.8rem;
    text-transform: uppercase; letter-spacing: 0.5px;
    color: var(--accent-light); padding: 0.85rem 1rem;
    white-space: nowrap;
}
.table-glass tbody td { padding: 0.85rem 1rem; vertical-align: middle; }
.table-glass tbody tr { transition: var(--transition); }
.table-glass tbody tr:hover { background: var(--bg-glass); }

/* ============ BUTTONS ============ */
.btn-accent {
    background: var(--gradient-1); border: none;
    color: #fff; font-weight: 600; padding: 0.6rem 1.5rem;
    border-radius: var(--radius-sm); transition: var(--transition);
    font-size: 0.875rem; letter-spacing: 0.3px;
}
.btn-accent:hover {
    box-shadow: var(--shadow-glow); transform: translateY(-1px); color: #fff;
}

.btn-outline-accent {
    border: 1px solid var(--accent); color: var(--accent-light);
    background: transparent; border-radius: var(--radius-sm);
    font-weight: 500; font-size: 0.875rem;
    transition: var(--transition);
}
.btn-outline-accent:hover {
    background: var(--accent); color: #fff;
}

.btn-glass {
    background: var(--bg-glass); border: 1px solid var(--border-glass);
    color: var(--text-primary); border-radius: var(--radius-sm);
    font-size: 0.875rem; transition: var(--transition);
}
.btn-glass:hover { background: rgba(255,255,255,0.1); color: #fff; }

/* ============ FORMS ============ */
.form-control, .form-select {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    padding: 0.65rem 1rem;
    transition: var(--transition);
}
.form-control:focus, .form-select:focus {
    background: var(--bg-secondary);
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-control::placeholder { color: var(--text-muted); }
.form-label { font-weight: 500; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 0.4rem; }

/* ============ BADGES ============ */
.badge-pilgan { background: rgba(6, 182, 212, 0.15); color: #06b6d4; border: 1px solid rgba(6, 182, 212, 0.3); }
.badge-essay { background: rgba(245, 158, 11, 0.15); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.3); }
.badge-correct { background: var(--success-glow); color: var(--success); }
.badge-wrong { background: var(--danger-glow); color: var(--danger); }
.badge-pending { background: var(--warning-glow); color: var(--warning); }

/* ============ LOGIN PAGE ============ */
.login-wrapper {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg-primary);
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 50%, rgba(6, 182, 212, 0.08) 0%, transparent 60%);
    padding: 2rem;
}
.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    width: 100%; max-width: 420px;
}
.login-card .brand-icon {
    width: 56px; height: 56px; font-size: 1.5rem;
    margin: 0 auto 1rem;
}
.login-card h1 { font-size: 1.5rem; font-weight: 700; text-align: center; margin-bottom: 0.25rem; }
.login-card .subtitle { text-align: center; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 2rem; }

/* ============ EXAM PAGE ============ */
.timer-bar {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 1rem 1.5rem;
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 70px; z-index: 100;
    backdrop-filter: blur(10px);
    margin-bottom: 1.5rem;
}
.timer-display {
    font-size: 1.5rem; font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: var(--success);
}
.timer-display.warning { color: var(--warning); }
.timer-display.danger { color: var(--danger); animation: pulse 1s ease-in-out infinite; }

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.question-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}
.question-number {
    display: inline-flex; align-items: center; justify-content: center;
    width: 36px; height: 36px;
    background: var(--gradient-1);
    border-radius: 50%;
    font-weight: 700; font-size: 0.9rem;
    color: #fff; margin-right: 0.75rem;
}
.question-text { font-size: 1rem; line-height: 1.7; font-weight: 500; }
.question-image { max-width: 100%; border-radius: var(--radius-md); margin: 1rem 0; border: 1px solid var(--border-glass); }

/* Option buttons */
.option-btn {
    display: flex; align-items: center; gap: 0.75rem;
    width: 100%; padding: 0.85rem 1.25rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem; text-align: left;
    cursor: pointer; transition: var(--transition);
    margin-bottom: 0.5rem;
}
.option-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent);
}
.option-btn.selected {
    background: rgba(99, 102, 241, 0.15);
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-glow);
}
.option-btn .option-letter {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.85rem;
    flex-shrink: 0;
    transition: var(--transition);
}
.option-btn.selected .option-letter {
    background: var(--accent);
}

/* Question nav (soal satu per satu) */
.question-nav {
    display: flex; flex-wrap: wrap; gap: 0.5rem;
    padding: 1rem; background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
}
.q-nav-btn {
    width: 40px; height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-glass);
    background: var(--bg-glass);
    color: var(--text-secondary);
    font-weight: 600; font-size: 0.8rem;
    cursor: pointer; transition: var(--transition);
    display: flex; align-items: center; justify-content: center;
}
.q-nav-btn:hover { border-color: var(--accent); color: var(--accent-light); }
.q-nav-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.q-nav-btn.answered { background: rgba(16, 185, 129, 0.2); border-color: var(--success); color: var(--success); }

/* ============ SCOREBOARD ============ */
.rank-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1rem;
    display: flex; align-items: center; gap: 1rem;
    transition: var(--transition);
}
.rank-card:hover { border-color: rgba(255,255,255,0.15); transform: translateX(4px); }
.rank-number {
    width: 48px; height: 48px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 1.1rem;
    flex-shrink: 0;
}
.rank-1 .rank-number { background: linear-gradient(135deg, #ffd700, #ffaa00); color: #1a1a2e; }
.rank-2 .rank-number { background: linear-gradient(135deg, #c0c0c0, #a0a0a0); color: #1a1a2e; }
.rank-3 .rank-number { background: linear-gradient(135deg, #cd7f32, #b8690e); color: #1a1a2e; }
.rank-other .rank-number { background: var(--bg-glass); border: 1px solid var(--border-glass); color: var(--text-secondary); }

.rank-info { flex: 1; }
.rank-name { font-weight: 600; font-size: 1rem; }
.rank-score { font-weight: 800; font-size: 1.25rem; color: var(--accent-light); }

/* ============ RESULT PAGE ============ */
.result-hero {
    text-align: center; padding: 3rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-xl);
    margin-bottom: 2rem;
    position: relative; overflow: hidden;
}
.result-hero::before {
    content: ''; position: absolute; inset: 0;
    background: var(--gradient-1); opacity: 0.05;
}
.result-score { font-size: 4rem; font-weight: 800; color: var(--accent-light); }
.result-rank { font-size: 1.2rem; color: var(--text-secondary); }
.result-rank span { color: var(--warning); font-weight: 700; }

/* ============ PAGE TITLE ============ */
.page-header {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-glass);
}
.page-header h1 { font-size: 1.5rem; font-weight: 700; margin: 0; }
.page-header p { color: var(--text-secondary); font-size: 0.9rem; margin: 0.25rem 0 0; }

/* ============ CATEGORY CARD ============ */
.category-card {
    background: var(--bg-card); border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg); padding: 1.5rem;
    transition: var(--transition); height: 100%;
    display: flex; flex-direction: column;
}
.category-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}
.category-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.category-card .meta { color: var(--text-secondary); font-size: 0.85rem; }
.category-card .btn-start { margin-top: auto; }

/* ============ FOOTER ============ */
.app-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-glass);
    font-size: 0.8rem;
}

/* ============ ALERT ============ */
.alert { border-radius: var(--radius-md); border: none; font-size: 0.875rem; }
.alert-success { background: var(--success-glow); color: var(--success); }
.alert-danger { background: var(--danger-glow); color: var(--danger); }
.alert-warning { background: var(--warning-glow); color: var(--warning); }
.alert-info { background: var(--info-glow); color: var(--info); }

/* ============ MODAL ============ */
.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
}
.modal-header { border-bottom: 1px solid var(--border-glass); }
.modal-footer { border-top: 1px solid var(--border-glass); }
.btn-close { filter: invert(1) brightness(0.8); }

/* ============ PAGINATION ============ */
.page-link {
    background: var(--bg-glass); border-color: var(--border-glass);
    color: var(--text-secondary); font-size: 0.85rem;
}
.page-link:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-item.active .page-link { background: var(--accent); border-color: var(--accent); }

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate-in { animation: fadeInUp 0.5s ease-out forwards; }
.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }
.delay-4 { animation-delay: 0.4s; opacity: 0; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .stat-value { font-size: 1.5rem; }
    .timer-bar { flex-direction: column; gap: 0.5rem; text-align: center; }
    .timer-display { font-size: 1.25rem; }
    .result-score { font-size: 3rem; }
    .login-card { padding: 1.5rem; margin: 1rem; }
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-glass); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }