/* LIQUID GLASS DESIGN SYSTEM - LingoCircus */

:root {
    --glass-white: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.15);
    --primary: #6366f1;
    --secondary: #ec4899;
    --radius-lg: 1rem;
    --radius-full: 9999px;
    --font-display: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: #fff;
    overflow-x: hidden;
}

/* Animated Background */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    z-index: -2;
}

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

.bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    z-index: -1;
}

/* Navigation */
.nav-glass {
    position: fixed;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 2rem);
    max-width: 1200px;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    padding: 1rem 1.5rem;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover, .nav-link.active {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

/* Buttons */
.btn-glass {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.8), rgba(139, 92, 246, 0.8));
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.9), rgba(139, 92, 246, 0.9));
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 4rem 1.5rem;
    margin-top: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero-content {
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #fbbf24, #f59e0b, #ec4899);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    min-width: 120px;
}

.stat-value {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #fff, #a78bfa);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Hero Visual */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 20%;
    width: 400px;
    height: 400px;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 40%;
    right: 0;
    animation-delay: 1s;
}

.card-3 {
    bottom: 0;
    left: 20%;
    animation-delay: 2s;
}

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

/* Features Section */
.features {
    padding: 6rem 1.5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.7);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-8px);
    background: rgba(255, 255, 255, 0.12);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.feature-description {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    margin-bottom: 1.5rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
}

.feature-btn {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.feature-btn:hover {
    background: rgba(255, 255, 255, 0.15);
}

.featured {
    position: relative;
    border: 2px solid rgba(236, 72, 153, 0.5);
}

.featured-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: linear-gradient(135deg, #ec4899, #f59e0b);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-glow {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 4px 20px rgba(236, 72, 153, 0.4);
}

/* Playground */
.playground {
    padding: 6rem 1.5rem;
}

.playground-container {
    max-width: 900px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 3rem;
}

.playground-settings {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}

.setting-group {
    flex: 1;
}

.setting-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.glass-select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: #fff;
    font-family: var(--font-body);
    cursor: pointer;
}

.twister-display {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: 3rem;
    margin-bottom: 2rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.twister-text {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    line-height: 1.6;
}

.playground-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.btn-record {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.result-panel {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.result-score {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.score-circle {
    position: relative;
    width: 150px;
    height: 150px;
}

.score-circle svg {
    transform: rotate(-90deg);
}

.score-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 8;
}

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

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

.score-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
}

.score-label {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.result-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.result-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
}

/* Leaderboard */
.leaderboard {
    padding: 6rem 1.5rem;
}

.leaderboard-container {
    max-width: 800px;
    margin: 0 auto;
}

.leaderboard-filters {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: #fff;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all 0.3s;
}

.leaderboard-item:hover {
    transform: translateX(8px);
    background: rgba(255, 255, 255, 0.12);
}

.rank-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    min-width: 60px;
}

.rank-1 .rank-badge { color: #fbbf24; }
.rank-2 .rank-badge { color: #cbd5e1; }
.rank-3 .rank-badge { color: #f59e0b; }

.player-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.player-avatar {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.player-name {
    font-weight: 600;
    font-size: 1.125rem;
}

.player-country {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
}

.player-score {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.3);
    padding: 4rem 1.5rem 2rem;
    margin-top: 6rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin: 1rem 0;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: all 0.3s;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-4px);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-column a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color 0.3s;
}

.footer-column a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .nav-links { display: none; }
    .hero-visual { display: none; }
    .hero-actions { flex-direction: column; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; }
    .result-details { grid-template-columns: 1fr; }
}