@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&family=Inter:wght@300;400;600&display=swap');

:root {
    --bg-dark: #030712;
    --bg-gradient: radial-gradient(circle at top, #0f172a 0%, #030712 100%);
    --neon-blue: #38bdf8;
    --neon-blue-glow: rgba(56, 189, 248, 0.4);
    --dark-blue: #1e293b;
    --text-white: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(30, 41, 59, 0.4);
    --glass-border: rgba(56, 189, 248, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: var(--bg-gradient);
    background-color: var(--bg-dark);
    color: var(--text-white);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background-image: 
        linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 30s linear infinite;
}

@keyframes gridMove {
    0% { transform: translateY(0); }
    100% { transform: translateY(50px); }
}

h1, h2, h3, h4, .logo {
    font-family: 'Outfit', sans-serif;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(3, 7, 18, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--neon-blue);
    text-shadow: 0 0 12px var(--neon-blue-glow);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 400;
    font-size: 1rem;
    transition: all 0.3s ease;
}

nav a:hover {
    color: var(--text-white);
    text-shadow: 0 0 8px var(--neon-blue-glow);
}

.auth-buttons {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 0.6rem 1.8rem;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.btn-login {
    background: transparent;
    color: var(--text-white);
    border: 1px solid var(--glass-border);
}

.btn-login:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px var(--neon-blue-glow);
}

.btn-signup {
    background: var(--neon-blue);
    color: var(--bg-dark);
    border: 1px solid var(--neon-blue);
    box-shadow: 0 0 15px var(--neon-blue-glow);
}

.btn-signup:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px var(--neon-blue-glow);
    background: #7dd3fc;
}

/* Hero Section */
.hero {
    margin-top: 80px;
    padding: 8rem 5% 4rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffffff 0%, var(--neon-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    max-width: 800px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 650px;
    margin-bottom: 3rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.hero .creator {
    margin-top: 4rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    opacity: 0.6;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hero .creator span {
    color: var(--neon-blue);
    font-weight: 600;
}

/* Sections */
.section {
    padding: 6rem 5%;
}

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

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.section-header h2 span {
    color: var(--neon-blue);
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Cards Grid */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 100%);
    pointer-events: none;
}

.glass-card:hover {
    transform: translateY(-10px);
    border-color: var(--neon-blue);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(56, 189, 248, 0.1);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: rgba(56, 189, 248, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--neon-blue);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.glass-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.glass-card p {
    color: var(--text-muted);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Stats/Exchange Section */
.exchange-section {
    background: rgba(3, 7, 18, 0.8);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
    padding: 5rem 5%;
    position: relative;
}

.exchange-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.exchange-text {
    flex: 1;
}

.exchange-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.exchange-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.exchange-visual {
    flex: 1;
    position: relative;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.visual-element {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent 0%, var(--neon-blue) 100%);
    animation: spin 10s linear infinite;
    position: absolute;
    opacity: 0.2;
    filter: blur(20px);
}

.visual-core {
    width: 150px;
    height: 150px;
    background: var(--dark-blue);
    border-radius: 50%;
    border: 2px solid var(--neon-blue);
    box-shadow: 0 0 30px var(--neon-blue-glow), inset 0 0 20px var(--neon-blue-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--neon-blue);
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

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

footer {
    text-align: center;
    padding: 3rem 5%;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 3rem; }
    nav ul { display: none; }
    .exchange-content { flex-direction: column; text-align: center; }
}