:root {
    /* Deep Cosmic Palette */
    --bg-primary: #030305;
    --bg-secondary: #0a0a0f;
    --bg-card: #12121e;
    --bg-header: rgba(10, 10, 15, 0.85);

    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-active: #ffffff;

    --primary: #3b82f6;
    --primary-glow: rgba(59, 130, 246, 0.2);
    --secondary: #8b5cf6;
    --accent: #06b6d4;

    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.2);
    --error: #ef4444;
    --warning: #f59e0b;

    --border-color: rgba(255, 255, 255, 0.06);
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);

    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.2);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

@font-face {
    font-family: 'Geist';
    src: url('https://cdn.jsdelivr.net/npm/geist-font@1.0.0/fonts/geist-sans/Geist-Variable.woff2') format('woff2');
}

body {
    font-family: 'Geist', 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 10px;
}

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

/* Global Components */
.main-content {
    padding-top: 80px;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Animated Background Gradients */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.03) 0%, transparent 40%);
    z-index: -1;
    pointer-events: none;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: #fff;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    letter-spacing: -0.5px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
}

.nav-user-profile {
    display: flex;
    align-items: center;
    gap: 20px;
    padding-left: 20px;
    border-left: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.u-points {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
}

.u-points span {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.u-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: #fff;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

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

.btn-block {
    width: 100%;
}

/* Auth Pages */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
    min-height: calc(100vh - 80px);
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 48px;
    border-radius: 24px;
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s ease-out;
}

.auth-title {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-subtitle {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    margin-bottom: 4px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.auth-footer {
    margin-top: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* Dashboard & Levels */
.dashboard {
    max-width: 1400px;
    margin: 0 auto;
    padding: 48px 40px;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 48px;
    flex-wrap: wrap;
    gap: 24px;
}

.user-welcome h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.8rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.user-stats-summary {
    display: flex;
    gap: 32px;
}

.stat-v-card {
    display: flex;
    flex-direction: column;
    padding: 16px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    min-width: 160px;
}

.stat-v-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-v-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
}

.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 32px;
}

.level-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.level-card:hover:not(.locked) {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.level-card.locked {
    opacity: 0.6;
}

.level-badge {
    position: absolute;
    top: 32px;
    right: 32px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.locked-badge {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.level-icon {
    width: 56px;
    height: 56px;
    background: var(--bg-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 24px;
    border: 1px solid var(--border-color);
}

.level-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.level-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.level-progress-info {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Leaderboard */
.leaderboard-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
}

.leaderboard-table th {
    background: rgba(255, 255, 255, 0.02);
    text-align: left;
    padding: 20px 32px;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.leaderboard-table td {
    padding: 20px 32px;
    border-top: 1px solid var(--border-color);
}

.rank-badge {
    width: 36px;
    height: 36px;
    background: var(--glass-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    font-weight: 800;
    font-size: 1rem;
}

.rank-1 {
    color: #fbbf24;
    background: rgba(251, 191, 36, 0.15);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

.rank-2 {
    color: #cbd5e1;
    background: rgba(203, 213, 225, 0.15);
    border: 1px solid rgba(203, 213, 225, 0.2);
}

.rank-3 {
    color: #b45309;
    background: rgba(180, 83, 9, 0.15);
    border: 1px solid rgba(180, 83, 9, 0.2);
}

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

.lb-user-name {
    font-weight: 700;
    font-size: 1rem;
    color: #fff;
}

.lb-points {
    font-weight: 800;
    color: var(--primary);
    font-family: 'JetBrains Mono', monospace;
}

/* Utilities */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.alert {
    padding: 16px 20px;
    border-radius: 12px;
    font-weight: 600;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

/* JS Interaction Helpers */
.btn-ripple {
    position: absolute;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    pointer-events: none;
    border-radius: 50%;
    animation: ripple 0.6s linear;
    width: 2px;
    height: 2px;
}

@keyframes ripple {
    from {
        width: 0;
        height: 0;
        opacity: 0.5;
    }

    to {
        width: 400px;
        height: 400px;
        opacity: 0;
    }
}

.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
    z-index: 1001;
    width: 0%;
    transition: width 0.1s ease;
}

/* Dashboard V2 Styles */
.dashboard-v2 {
    max-width: 1400px;
    margin: 0 auto;
}

.back-btn {
    margin-bottom: 32px;
}

/* Challenge Page Specifics */
.challenge-body {
    background: #050508;
}

.challenge-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    height: calc(100vh - 80px);
}

/* Sidebar Instructions */
.challenge-sidebar {
    background: #0a0a0f;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-content {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
}

.instruction-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Code Editor Section */
.editor-section {
    display: grid;
    grid-template-rows: 1fr 280px;
}

.monaco-wrapper {
    background: #030305;
    position: relative;
    border-bottom: 1px solid var(--border-color);
}

.terminal-section {
    background: #010103;
    padding: 24px;
    overflow-y: auto;
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.terminal-title {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.terminal-output {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: #e2e8f0;
}
/* Admin Dashboard Styling */
.admin-page {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 24px;
}

.admin-header {
    margin-bottom: 40px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 24px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-info .stat-value {
    display: block;
    font-size: 1.8rem;
    font-weight: 800;
    color: #fff;
}

.stat-info .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
}

.admin-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.admin-nav-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 32px;
    border-radius: 24px;
    text-decoration: none;
    transition: var(--transition);
}

.admin-nav-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    background: var(--glass-bg);
}

.admin-nav-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.admin-nav-card h3 {
    margin-bottom: 8px;
    color: #fff;
}

.admin-nav-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}