/* CTF Portal - Main Stylesheet */

/* CSS Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;
    --dark-lighter: #1e293b;
    --dark-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --success: #22c55e;
    --warning: #eab308;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-cyber: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);
    --radius: 12px;
    --radius-lg: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-cyber);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(217, 70, 239, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    width: 100%;
    padding: 0 20px;
}

/* Cards */
.card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.card-header {
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
    margin-bottom: 16px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-2);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--dark-lighter);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-success:hover {
    transform: translateY(-2px);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
}

.btn-danger:hover {
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    font-size: 1rem;
    color: var(--text-primary);
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 20px;
    padding-right: 40px;
}

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #4ade80;
}

.alert-error,
.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.alert-warning {
    background: rgba(234, 179, 8, 0.15);
    border: 1px solid rgba(234, 179, 8, 0.3);
    color: #facc15;
}

.alert-info {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #a5b4fc;
}

/* Login Page Specific */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo h1 {
    font-size: 2.5rem;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.login-logo p {
    color: var(--text-secondary);
}

.login-card {
    background: rgba(30, 41, 59, 0.9);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow), var(--shadow-glow);
}

/* Navbar */
.navbar {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-user-avatar {
    width: 36px;
    height: 36px;
    background: var(--gradient-2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

/* Dashboard */
.dashboard-header {
    padding: 40px 0;
    text-align: center;
}

.dashboard-header h1 {
    margin-bottom: 10px;
}

.dashboard-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

/* Timer */
.timer-display {
    text-align: center;
    padding: 30px;
}

.timer-value {
    font-size: 4rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
}

.timer-label {
    color: var(--text-secondary);
    margin-top: 10px;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.stat-card {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* Questions Page */
.questions-container {
    padding: 30px 0;
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
}

.category-tab {
    padding: 12px 24px;
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.category-tab:hover,
.category-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.category-tab.solved {
    border-color: var(--success);
}

.question-card {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.question-card.solved {
    border-color: var(--success);
    background: rgba(34, 197, 94, 0.1);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.question-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.question-points {
    background: var(--primary);
    color: white;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.question-text {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.flag-input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.flag-input-group .form-control {
    flex: 1;
}

.hint-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.hint-btn {
    padding: 8px 16px;
    background: rgba(245, 158, 11, 0.2);
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: var(--radius);
    color: var(--accent);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hint-btn:hover {
    background: rgba(245, 158, 11, 0.3);
}

.hint-btn.used {
    background: rgba(100, 116, 139, 0.2);
    border-color: rgba(100, 116, 139, 0.3);
    color: var(--text-muted);
}

.hint-display {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius);
    padding: 16px;
    margin-top: 16px;
    color: var(--accent);
}

.solved-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(34, 197, 94, 0.2);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 20px;
    padding: 6px 14px;
    color: var(--success);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Scoreboard */
.scoreboard-table {
    width: 100%;
    border-collapse: collapse;
}

.scoreboard-table th,
.scoreboard-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.scoreboard-table th {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
    font-weight: 600;
}

.scoreboard-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

.rank-badge {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
}

.rank-1 { background: linear-gradient(135deg, #ffd700, #ffb347); color: #1a1a2e; }
.rank-2 { background: linear-gradient(135deg, #c0c0c0, #a8a8a8); color: #1a1a2e; }
.rank-3 { background: linear-gradient(135deg, #cd7f32, #b8860b); color: #1a1a2e; }

/* Admin Panel */
.admin-sidebar {
    width: 260px;
    background: rgba(15, 23, 42, 0.95);
    border-right: 1px solid var(--border);
    min-height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    padding: 20px;
}

.admin-content {
    margin-left: 260px;
    padding: 30px;
}

.admin-sidebar-brand {
    font-size: 1.3rem;
    font-weight: 700;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 30px;
    display: block;
}

.admin-nav {
    list-style: none;
}

.admin-nav-item {
    margin-bottom: 5px;
}

.admin-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.admin-nav-link:hover,
.admin-nav-link.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

.admin-nav-link.active {
    border-left: 3px solid var(--primary);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(30, 41, 59, 0.6);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.data-table th {
    background: rgba(99, 102, 241, 0.1);
    font-weight: 600;
    color: var(--text-primary);
}

.data-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
}

.badge-success {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: #f87171;
}

.badge-warning {
    background: rgba(234, 179, 8, 0.2);
    color: #facc15;
}

.badge-info {
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
}

/* Category Badges */
.category-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.category-web { background: rgba(239, 68, 68, 0.2); color: #f87171; }
.category-forensics { background: rgba(34, 197, 94, 0.2); color: #4ade80; }
.category-crypto { background: rgba(99, 102, 241, 0.2); color: #a5b4fc; }
.category-osint { background: rgba(234, 179, 8, 0.2); color: #facc15; }
.category-stego { background: rgba(217, 70, 239, 0.2); color: #e879f9; }

/* Utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--text-muted); }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }

/* Recording Indicator */
.recording-indicator {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(239, 68, 68, 0.9);
    padding: 10px 20px;
    border-radius: var(--radius);
    color: white;
    font-weight: 600;
    z-index: 9999;
    animation: pulse 1.5s infinite;
}

.recording-dot {
    width: 12px;
    height: 12px;
    background: white;
    border-radius: 50%;
    animation: blink 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Responsive */
@media (max-width: 768px) {
    .navbar-nav {
        display: none;
    }
    
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-content {
        margin-left: 0;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .flag-input-group {
        flex-direction: column;
    }
    
    .timer-value {
        font-size: 2.5rem;
    }
    
    h1 {
        font-size: 1.8rem;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Instructions Panel */
.instructions-panel {
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 24px;
}

.instructions-panel h3 {
    color: var(--primary-light);
    margin-bottom: 16px;
}

.instructions-panel ul {
    list-style: none;
    padding-left: 0;
}

.instructions-panel li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
}

.instructions-panel li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
}

/* Progress Bar */
.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--gradient-2);
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* CTF Status Badge */
.ctf-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
}

.ctf-status.not-started {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-muted);
}

.ctf-status.in-progress {
    background: rgba(234, 179, 8, 0.2);
    color: #facc15;
}

.ctf-status.completed {
    background: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}