/*
   Xknova Redesign Stylesheet
   Premium Chess Theme (Dark Slate, Warm Metallic Gold, and Off-White)
*/

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

:root {
    --bg-main: #0c0e10;
    --bg-surface: #14171b;
    --bg-surface-raised: #1c2026;
    --bg-surface-muted: #0d0f11;
    --color-text: #f3f4f6;
    --color-text-muted: #9ca3af;
    
    /* Gold Metallic Theme */
    --color-gold: #c5a059;
    --color-gold-hover: #b08d48;
    --color-gold-glow: rgba(197, 160, 89, 0.2);
    --color-gold-light: #e5d5b7;
    
    --color-border: #23272d;
    --color-border-focus: #c5a059;
    
    --color-success: #10b981;
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --header-bg: rgba(20, 23, 27, 0.88);
    --header-shadow: none;
    
    --font-heading: 'Cabinet Grotesk', -apple-system, sans-serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-main: #f4f6f9;
    --bg-surface: #ffffff;
    --bg-surface-raised: #f9fafb;
    --bg-surface-muted: #eaeef3;
    --color-text: #111827;
    --color-text-muted: #6b7280;
    
    --color-gold: #aa853c;
    --color-gold-hover: #8f6f30;
    --color-gold-glow: rgba(170, 133, 60, 0.15);
    --color-gold-light: #7c5c24;
    
    --color-border: #e5e7eb;
    --color-border-focus: #aa853c;
    --header-bg: rgba(255, 255, 255, 0.94);
    --header-shadow: 0 1px 18px rgba(17, 24, 39, 0.08);
    
    --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--color-text);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

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

a {
    color: var(--color-gold);
    text-decoration: none;
    transition: var(--transition-smooth);
}

a:hover {
    color: var(--color-gold-light);
}

/* Scrollbar styles */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-surface-muted);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-gold);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Navbar */
header {
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--header-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s, border-color 0.3s, box-shadow 0.3s;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 20px;
    color: var(--color-text);
}
.logo span {
    color: var(--color-gold);
}
.logo-icon {
    font-size: 28px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.02em;
    position: relative;
    padding: 8px 0;
}
.nav-link:hover, .nav-link.active {
    color: var(--color-text);
}
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-gold);
    border-radius: 2px;
}
.user-badge {
    background-color: var(--bg-surface-raised);
    border: 1px solid var(--color-border);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.user-badge .role {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.05em;
    color: var(--color-gold);
    background-color: var(--color-gold-glow);
    padding: 2px 8px;
    border-radius: 4px;
}
.theme-toggle {
    width: 42px;
    height: 42px;
    min-width: 42px;
    padding: 0;
    font-size: 18px;
    line-height: 1;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
    gap: 8px;
}
.btn-primary {
    background-color: var(--color-gold);
    color: #0c0e10;
}
.btn-primary:hover {
    background-color: var(--color-gold-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--color-gold-glow);
    color: #0c0e10;
}
.btn-secondary {
    background-color: var(--bg-surface-raised);
    color: var(--color-text);
    border-color: #3a414c;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.btn-secondary:hover {
    border-color: var(--color-gold);
    background-color: #252b33;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
    transform: translateY(-2px);
}
[data-theme="light"] .btn-secondary {
    background-color: #ffffff;
    color: var(--color-text);
    border-color: #cbd5e1;
    box-shadow: 0 1px 2px rgba(17, 24, 39, 0.06);
}
[data-theme="light"] .btn-secondary:hover {
    background-color: var(--bg-surface-raised);
    border-color: var(--color-gold);
    box-shadow: 0 4px 14px rgba(17, 24, 39, 0.1);
}
.btn-danger {
    background-color: var(--color-danger);
    color: white;
}
.btn-danger:hover {
    background-color: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

/* Card */
.card {
    background-color: var(--bg-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}
.card:hover {
    border-color: var(--color-gold-glow);
}

/* Layout Grids */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 900px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 16px 0;
        gap: 12px;
    }
    .nav-links {
        gap: 16px;
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Hero Section */
.hero {
    padding: 96px 0 64px;
    text-align: center;
    position: relative;
    background: radial-gradient(circle at center, var(--bg-surface-raised) 0%, var(--bg-main) 70%);
}
.hero h1 {
    font-size: 56px;
    margin-bottom: 24px;
    line-height: 1.1;
    background: linear-gradient(135deg, #fff 0%, var(--color-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero p {
    font-size: 18px;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 32px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}
.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}
.form-control {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 14px;
    background-color: var(--bg-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    transition: var(--transition-smooth);
}
.form-control:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px var(--color-gold-glow);
}
input[type="file"].form-control {
    background-color: var(--bg-surface-muted) !important;
    border-color: #3a414c;
    color: var(--color-text-muted);
    padding: 7px;
}
input[type="file"].form-control::file-selector-button {
    margin-right: 12px;
    padding: 7px 12px;
    border: 1px solid var(--color-gold);
    border-radius: 6px;
    background-color: var(--color-gold);
    color: #0c0e10;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}
[data-theme="light"] input[type="file"].form-control {
    background-color: #ffffff !important;
    border-color: #cbd5e1;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
}
th {
    text-align: left;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}
td {
    padding: 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--color-border);
}
tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Progress Dash Components */
.metric-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.metric-card .value {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 800;
    color: var(--color-gold);
    line-height: 1;
}
.metric-card .label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

/* Progress bar */
.progress-bar-container {
    width: 100%;
    height: 8px;
    background-color: var(--bg-surface-muted);
    border-radius: 999px;
    overflow: hidden;
    margin-top: 8px;
}
.progress-bar-fill {
    height: 100%;
    background-color: var(--color-gold);
    border-radius: 999px;
    transition: width 0.5s ease-out;
}

/* Map widget */
.map-widget {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
    height: 300px;
    width: 100%;
}

/* Quiz UI Components */
.quiz-option {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 12px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 16px;
}
.quiz-option:hover {
    border-color: var(--color-gold);
    background-color: var(--bg-surface-raised);
}
.quiz-option.selected {
    border-color: var(--color-gold);
    background-color: var(--color-gold-glow);
}
.quiz-option.correct {
    border-color: var(--color-success);
    background-color: rgba(16, 185, 129, 0.1);
}
.quiz-option.incorrect {
    border-color: var(--color-danger);
    background-color: rgba(239, 68, 68, 0.1);
}
.quiz-radio {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition-smooth);
}
.quiz-option.selected .quiz-radio {
    border-color: var(--color-gold);
    background-color: var(--color-gold);
}
.quiz-explanation {
    background-color: var(--bg-surface-raised);
    border-left: 4px solid var(--color-gold);
    padding: 16px;
    border-radius: 0 8px 8px 0;
    margin-top: 16px;
}
.quiz-result-score {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-gold);
    text-align: center;
    margin: 20px 0;
}

/* Badge classes */
.badge {
    display: inline-flex;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.badge-gold {
    background-color: var(--color-gold-glow);
    color: var(--color-gold-light);
}
.badge-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}
.badge-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
}
.badge-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
}