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

:root {
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Dark Theme Palette (SaaS Premium) */
    --bg-primary: #0b0f19;
    --bg-secondary: #111827;
    --bg-tertiary: #1f2937;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-pink: #ec4899;
    
    --status-success: #10b981;
    --status-warning: #f59e0b;
    --status-danger: #ef4444;
    
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(17, 24, 39, 0.7);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    
    --card-glow-blue: 0 0 15px rgba(59, 130, 246, 0.15);
    --card-glow-purple: 0 0 15px rgba(139, 92, 246, 0.15);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

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

/* Glassmorphism Panel */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 16px;
}

/* Premium Navigation */
.navbar-custom {
    background: rgba(11, 15, 25, 0.8) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 1.5rem;
}

.navbar-brand-custom {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link-custom {
    color: var(--text-secondary) !important;
    font-weight: 500;
    transition: all 0.3s ease;
    border-radius: 8px;
    padding: 0.5rem 1rem !important;
}

.nav-link-custom:hover, .nav-link-custom.active {
    color: var(--text-primary) !important;
    background: rgba(255, 255, 255, 0.05);
}

/* Premium Dashboard Cards */
.card-premium {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.card-premium:hover {
    transform: translateY(-5px);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: var(--card-glow-blue);
}

.card-purple:hover {
    border-color: rgba(139, 92, 246, 0.3);
    box-shadow: var(--card-glow-purple);
}

/* Card Header Gradient Border */
.card-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    opacity: 0.8;
}

/* Auth Pages Wrapper */
.auth-wrapper {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.auth-card {
    width: 100%;
    max-width: 450px;
    padding: 2.5rem;
}

/* Premium Input Fields */
.form-control-custom {
    background-color: var(--bg-tertiary) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-primary) !important;
    border-radius: 10px !important;
    padding: 0.75rem 1rem !important;
    transition: all 0.3s ease !important;
}

.form-control-custom:focus {
    border-color: var(--accent-blue) !important;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25) !important;
}

/* Glow Buttons */
.btn-premium {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border: none;
    color: white;
    font-weight: 600;
    border-radius: 10px;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.4);
    opacity: 0.95;
}

.btn-outline-custom {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-outline-custom:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
}

/* Statistics Widgets */
.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
}

.stat-icon-purple {
    background: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
}

.stat-icon-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--status-success);
}

/* Exam Engine UI styling */
.exam-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.5rem;
}

@media (max-width: 991px) {
    .exam-layout {
        grid-template-columns: 1fr;
    }
}

.question-palette-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
}

.question-palette-btn.active {
    border-color: var(--accent-blue);
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

.question-palette-btn.answered {
    background-color: var(--status-success) !important;
    color: white !important;
    border-color: var(--status-success);
}

.question-palette-btn.review {
    background-color: var(--accent-purple) !important;
    color: white !important;
    border-color: var(--accent-purple);
}

.option-box {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
}

.option-box:hover {
    border-color: rgba(255, 255, 255, 0.2);
    background-color: rgba(255, 255, 255, 0.02);
}

.option-box.selected {
    border-color: var(--accent-blue);
    background-color: rgba(59, 130, 246, 0.1);
}

.option-badge {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 1rem;
    border: 1px solid var(--border-color);
}

.option-box.selected .option-badge {
    background-color: var(--accent-blue);
    color: white;
    border-color: var(--accent-blue);
}

/* Timer Countdown */
.timer-container {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--status-danger);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: monospace;
    font-size: 1.2rem;
    font-weight: 700;
}

/* Table Style */
.table-custom {
    color: var(--text-primary) !important;
}

.table-custom th {
    background-color: var(--bg-secondary) !important;
    border-bottom: 1px solid var(--border-color) !important;
    color: var(--text-secondary) !important;
    text-transform: uppercase;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding: 1rem !important;
}

.table-custom td {
    background-color: transparent !important;
    border-bottom: 1px solid var(--border-color) !important;
    padding: 1.2rem 1rem !important;
    vertical-align: middle !important;
}

/* Badge achievements */
.badge-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.badge-img:hover {
    transform: scale(1.1) rotate(5deg);
}

.badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem;
    justify-items: center;
}

.badge-item {
    text-align: center;
    padding: 1rem;
    border-radius: 12px;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    width: 100%;
}

.badge-item.locked {
    filter: grayscale(1);
    opacity: 0.5;
}

/* Leaderboard */
.rank-1 {
    background: linear-gradient(135deg, rgba(217, 119, 6, 0.2), rgba(251, 191, 36, 0.05)) !important;
    border-left: 4px solid #f59e0b !important;
}

.rank-2 {
    background: linear-gradient(135deg, rgba(100, 116, 139, 0.2), rgba(148, 163, 184, 0.05)) !important;
    border-left: 4px solid #94a3b8 !important;
}

.rank-3 {
    background: linear-gradient(135deg, rgba(180, 83, 9, 0.2), rgba(217, 119, 6, 0.05)) !important;
    border-left: 4px solid #b45309 !important;
}

/* Sticky Footer Overlap Fix */
footer.footer {
    position: relative !important;
    margin-top: auto !important;
    background-color: var(--bg-secondary) !important;
    border-top: 1px solid var(--border-color) !important;
    padding: 1.5rem 0 !important;
    width: 100% !important;
    z-index: 10;
}