/* Import Design System */
@import url('design-system.css?v=20260407');

/* GEOWIKI Specific Styles */
/* Premium Educational Platform */

body {
    overflow-x: hidden;
    cursor: none;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-family-primary);
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
    color: white;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Custom Cursor */
.cursor,
.cursor-follower {
    position: fixed;
    pointer-events: none;
    z-index: 9998;
    border-radius: 50%;
    transition: transform 0.1s ease;
}

.cursor {
    width: 8px;
    height: 8px;
    background: white;
    mix-blend-mode: difference;
}

.cursor-follower {
    width: 32px;
    height: 32px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
}

/* Animated Background */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    z-index: -1;
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(20px);
    background: rgba(11, 18, 32, 0.9);
    border-bottom: 1px solid rgba(77, 163, 255, 0.2);
}

.glass-nav {
    padding: var(--spacing-lg) 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--text-2xl);
    font-weight: 900;
    color: white;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-icon {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
    background: none;
    -webkit-text-fill-color: unset;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(5deg); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width 0.3s ease;
}

.nav-link:hover::before {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-color);
    background: rgba(77, 163, 255, 0.1);
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--bg-dark);
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(77, 163, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: float 8s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(124, 255, 178, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
    animation: float 10s ease-in-out infinite reverse;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    color: white;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-30px); }
}

.hero-title {
    font-size: clamp(3.5rem, 10vw, 7rem);
    font-weight: 900;
    margin-bottom: var(--spacing-lg);
    line-height: 1;
    letter-spacing: -2px;
}

.hero-title-main {
    display: block;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-sub {
    display: block;
    font-weight: 300;
    color: var(--secondary-color);
    margin-top: var(--spacing-md);
    font-size: 0.5em;
}

.hero-subtitle {
    font-size: var(--text-lg);
    max-width: 600px;
    margin: var(--spacing-2xl) auto var(--spacing-3xl);
    color: var(--text-secondary);
    line-height: 1.8;
}

.hero-cta {
    margin-bottom: var(--spacing-3xl);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--primary-gradient);
    color: white;
    padding: var(--spacing-lg) var(--spacing-2xl);
    border-radius: var(--border-radius-xl);
    text-decoration: none;
    font-weight: 700;
    font-size: var(--text-lg);
    transition: all 0.3s ease;
    box-shadow: 0 0 40px rgba(77, 163, 255, 0.4);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(77, 163, 255, 0.5);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(124, 255, 178, 0.3), transparent);
    transition: left 0.6s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 60px rgba(77, 163, 255, 0.6);
    border-color: rgba(124, 255, 178, 0.8);
}

.cta-arrow {
    transition: transform 0.3s ease;
    font-size: 1.2em;
}

.cta-button:hover .cta-arrow {
    transform: translateX(8px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
    padding: var(--spacing-2xl);
    background: rgba(77, 163, 255, 0.05);
    border: 1px solid rgba(77, 163, 255, 0.1);
    border-radius: var(--border-radius-xl);
    backdrop-filter: blur(10px);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-4xl);
    font-weight: 900;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--text-xs);
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: var(--spacing-sm);
}

.hero-visual {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    z-index: 1;
}

.floating-elements {
    position: relative;
}

.floating-card {
    position: absolute;
    width: 100px;
    height: 80px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-soft);
    animation: floatCards 6s ease-in-out infinite;
}

.floating-card:nth-child(1) {
    top: -100px;
    left: -50px;
    animation-delay: 0s;
}

.floating-card:nth-child(2) {
    top: 50px;
    left: 100px;
    animation-delay: 1.5s;
}

.floating-card:nth-child(3) {
    top: 150px;
    left: -100px;
    animation-delay: 3s;
}

.floating-card:nth-child(4) {
    top: 250px;
    left: 50px;
    animation-delay: 4.5s;
}

@keyframes floatCards {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* Levels Section */
.levels-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
}

.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.level-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.level-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--beginner-color);
    transition: var(--transition);
}

.level-beginner .card-glow { background: var(--beginner-color); }
.level-confident .card-glow { background: var(--confident-color); }
.level-expert .card-glow { background: var(--expert-color); }
.level-pro .card-glow { background: var(--pro-color); }
.level-geo .card-glow { background: var(--geo-color); }

.card-content {
    position: relative;
    z-index: 2;
}

.level-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.level-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.level-desc {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.level-progress {
    margin-bottom: var(--spacing-lg);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    width: 0%;
    transition: width 0.5s ease;
}

.level-btn {
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.level-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.level-btn:hover::before {
    left: 100%;
}

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

.btn-arrow {
    transition: transform 0.3s ease;
}

.level-btn:hover .btn-arrow {
    transform: translateX(5px);
}

/* Progress Section */
.progress-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.progress-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.progress-circle {
    position: relative;
    width: 200px;
    height: 200px;
}

.progress-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.2);
    stroke-width: 8;
}

.progress-fill-circle {
    fill: none;
    stroke: url(#gradient);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 1s ease;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
}

.progress-percent {
    display: block;
    font-size: 2rem;
    font-weight: 700;
}

.progress-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

.progress-details {
    max-width: 400px;
}

#progressText {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.achievements {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.achievement {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    opacity: 0.5;
    transition: var(--transition);
}

.achievement.unlocked {
    opacity: 1;
    background: var(--accent-gradient);
    color: white;
}

.achievement-icon {
    font-size: 1.5rem;
}

.achievement-text {
    font-weight: 500;
}

/* Mini Game Section */
.mini-game-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xl);
}

.game-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-soft);
}

.game-question {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.game-option {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.game-option:hover {
    background: var(--accent-gradient);
    color: white;
    transform: translateY(-2px);
}

.game-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.game-score {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.score-value {
    color: var(--beginner-color);
}

/* Footer */
.footer {
    background: var(--primary-gradient);
    color: white;
    padding: var(--spacing-xl) 0;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
    transform: translateY(-2px);
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Level Pages Styles */
.level-hero {
    min-height: 60vh;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.level-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.level-hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    text-align: center;
    color: white;
    position: relative;
    z-index: 2;
}

.level-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-lg);
}

.level-icon-large {
    font-size: 2rem;
}

.level-name {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.level-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.level-description {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    opacity: 0.9;
}

.level-progress-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    opacity: 0.6;
    transition: var(--transition);
}

.progress-step.active {
    opacity: 1;
}

.step-number {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    backdrop-filter: blur(10px);
}

.progress-step.active .step-number {
    background: white;
    color: var(--text-primary);
}

.step-label {
    font-size: 0.875rem;
    font-weight: 500;
}

.progress-connector {
    width: 60px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
}

/* Theory Section */
.theory-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.theory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.theory-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition);
}

.theory-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-soft);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.theory-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.theory-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.symbols-showcase {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
}

.symbols-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.symbols-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.symbol-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: var(--transition);
}

.symbol-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.symbol-emoji {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.symbol-card h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.symbol-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Practice Section */
.practice-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.quiz-container {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    max-width: 800px;
    margin: 0 auto;
}

.quiz-progress {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
}

.quiz-progress .progress-bar {
    flex: 1;
    margin-right: var(--spacing-md);
}

.question-card {
    display: none;
}

.question-card.active {
    display: block;
}

.question-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.question-number {
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.question-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.question-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.option {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.option:hover {
    background: rgba(255, 255, 255, 0.2);
}

.option input[type="radio"] {
    display: none;
}

.option input[type="radio"]:checked + .option-text {
    color: var(--beginner-color);
    font-weight: 600;
}

.option input[type="radio"]:checked ~ .option::before {
    content: '✓';
    position: absolute;
    right: var(--spacing-md);
    color: var(--beginner-color);
    font-weight: bold;
}

.option-text {
    flex: 1;
    transition: var(--transition);
}

.quiz-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--glass-border);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.nav-btn:hover:not(:disabled) {
    background: var(--accent-gradient);
    transform: translateY(-2px);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-btn.primary {
    background: var(--accent-gradient);
}

.results-container {
    text-align: center;
}

.results-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    backdrop-filter: blur(10px);
}

.results-header {
    margin-bottom: var(--spacing-lg);
}

.results-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.results-score {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
    font-size: 3rem;
    font-weight: 800;
    color: var(--beginner-color);
}

.score-number {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.results-message {
    margin-bottom: var(--spacing-xl);
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.results-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.action-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.action-btn.secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.action-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}
.level-3 { border-left-color: #FF9800; }
.level-4 { border-left-color: #9C27B0; }
.level-5 { border-left-color: #F44336; }

.btn {
    display: inline-block;
    background-color: #4CAF50;
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #388E3C;
}

.symbols-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.symbol-category {
    background-color: #f9f9f9;
    padding: 1rem;
    border-radius: 8px;
}

.symbol-category h3 {
    color: #4CAF50;
    margin-top: 0;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    margin-bottom: 0.5rem;
}

.progress-bar {
    background-color: #ddd;
    border-radius: 10px;
    height: 20px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    background-color: #4CAF50;
    height: 100%;
    text-align: center;
    color: white;
    line-height: 20px;
    font-weight: bold;
}

footer {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

/* Адаптивность */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
    }
    nav li {
        margin: 0.5rem 0;
    }
    .levels, .symbols-grid {
        grid-template-columns: 1fr;
    }
}

/* Модальное окно */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.show {
    opacity: 1;
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 80%;
    max-width: 500px;
    position: relative;
    transform: translateY(-50px);
    transition: transform 0.3s ease;
}

.modal.show .modal-content {
    transform: translateY(0);
}

.close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #000;
}

/* Фильтры */
.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    background: #f0f0f0;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

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

.filter-btn:hover {
    background: var(--secondary-color);
    color: white;
}

/* Карточки символов */
.symbols-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.symbol-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.symbol-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

.symbol-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.symbol-card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.symbol-card p {
    color: #666;
    margin-bottom: 1rem;
}

/* Теория */
.theory-content h3 {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.image-gallery {
    text-align: center;
    margin: 2rem 0;
}

.image-gallery img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.symbols-intro {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.symbol-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f9f9f9;
    border-radius: var(--border-radius);
}

.symbol {
    font-size: 2rem;
}

/* Тесты */
#quiz-container {
    max-width: 600px;
    margin: 0 auto;
}

.question {
    display: none;
    margin-bottom: 2rem;
}

.question.active {
    display: block;
}

.question h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.options {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: #f9f9f9;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.options label:hover {
    background: #e8f5e8;
}

#results {
    text-align: center;
    margin-top: 2rem;
    padding: 2rem;
    background: #f9f9f9;
    border-radius: var(--border-radius);
}

#results h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Symbols Page Styles */
.symbols-hero {
    padding: var(--spacing-2xl) 0;
    background: var(--primary-gradient);
    text-align: center;
    color: white;
}

.symbols-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.symbols-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.filters-section {
    padding: var(--spacing-xl) 0;
    background: var(--bg-secondary);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-gradient);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.filter-icon {
    font-size: 1.25rem;
}

.symbols-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-primary);
}

.symbol-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.symbol-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.symbol-emoji {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.symbol-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.symbol-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.symbol-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

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

/* Wow Effects */
@keyframes morph {
    0%, 100% {
        border-radius: 50%;
        transform: scale(1) rotate(0deg);
    }
    25% {
        border-radius: 25%;
        transform: scale(1.1) rotate(90deg);
    }
    50% {
        border-radius: 0%;
        transform: scale(0.9) rotate(180deg);
    }
    75% {
        border-radius: 25%;
        transform: scale(1.05) rotate(270deg);
    }
}

.morphing-shape {
    animation: morph 4s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0, -4px, 0);
    }
}

.notification {
    animation: slideInRight 0.3s ease-out;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Enhanced Glass Effects */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

/* Premium Button Effects */
.premium-btn {
    position: relative;
    overflow: hidden;
    background: var(--accent-gradient);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-glow);
}

.premium-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.premium-btn:hover::before {
    left: 100%;
}

.premium-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.4);
}

/* Floating Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

/* Pulse Animation */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(255, 255, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* EXPLORE SECTION */
.explore-section {
    padding: var(--spacing-4xl) var(--spacing-xl);
    background: var(--bg-dark);
    border-top: 1px solid rgba(77, 163, 255, 0.1);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: var(--text-5xl);
    font-weight: 900;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--text-lg);
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
}

/* CONTINENTS GRID */
.continents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.continent-card {
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, rgba(77, 163, 255, 0.1) 0%, rgba(124, 255, 178, 0.05) 100%);
    border: 1px solid rgba(77, 163, 255, 0.2);
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    transition: all 0.4s ease;
    text-align: center;
    backdrop-filter: blur(10px);
}

.continent-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.continent-card h3 {
    font-size: var(--text-2xl);
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-sm);
}

.continent-card p {
    color: var(--text-secondary);
    margin: 0;
}

.continent-card:hover {
    background: linear-gradient(135deg, rgba(77, 163, 255, 0.2) 0%, rgba(124, 255, 178, 0.1) 100%);
    border-color: rgba(77, 163, 255, 0.5);
    box-shadow: 0 0 40px rgba(77, 163, 255, 0.3);
    transform: translateY(-8px);
}

/* MAP CTA */
.map-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

.map-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--secondary-gradient);
    color: #000;
    padding: var(--spacing-lg) var(--spacing-3xl);
    border-radius: var(--border-radius-xl);
    text-decoration: none;
    font-weight: 800;
    font-size: var(--text-xl);
    transition: all 0.4s ease;
    box-shadow: 0 0 50px rgba(124, 255, 178, 0.3);
    border: 2px solid transparent;
}

.map-button:hover {
    transform: translateY(-6px);
    box-shadow: 0 0 80px rgba(124, 255, 178, 0.5);
    border-color: rgba(124, 255, 178, 0.8);
}

.btn-arrow {
    transition: transform 0.3s ease;
    font-size: 1.3em;
}

.map-button:hover .btn-arrow {
    transform: translateX(8px);
}

/* ===== SMOOTH ANIMATIONS ===== */

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Apply animations to sections */
.hero-section,
.explore-section,
.levels-section,
.progress-section,
.mini-game-section {
    animation: slideInUp 0.6s ease-out forwards;
}

.explore-section {
    animation-delay: 0.1s;
}

.levels-section {
    animation-delay: 0.2s;
}

.progress-section {
    animation-delay: 0.3s;
}

.mini-game-section {
    animation-delay: 0.4s;
}

/* Continent cards stagger animation */
.continent-card {
    animation: fadeInScale 0.5s ease-out forwards;
    opacity: 0;
}

.continent-card:nth-child(1) { animation-delay: 0.1s; }
.continent-card:nth-child(2) { animation-delay: 0.2s; }
.continent-card:nth-child(3) { animation-delay: 0.3s; }
.continent-card:nth-child(4) { animation-delay: 0.4s; }

/* Level cards stagger animation */
.level-card {
    animation: fadeInScale 0.5s ease-out forwards;
    opacity: 0;
}

.level-card:nth-child(1) { animation-delay: 0.1s; }
.level-card:nth-child(2) { animation-delay: 0.2s; }
.level-card:nth-child(3) { animation-delay: 0.3s; }
.level-card:nth-child(4) { animation-delay: 0.4s; }
.level-card:nth-child(5) { animation-delay: 0.5s; }

/* Cursor pointer for interactive elements */
.continent-card,
.level-card,
.cta-button,
.level-btn,
.map-button,
.filter-btn,
button {
    cursor: pointer;
}

/* Smooth hover transitions */
a, button, .level-card, .continent-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
}