/* Modern Design System - Inspired by Coinbase, Hyperliquid, and Apple */

/* Premium Typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=SF+Pro+Display:wght@300;400;500;600;700;800;900&display=swap');

:root {
    /* Color System */
    --primary-bg: #000000;
    --secondary-bg: #0a0a0a;
    --surface-bg: #1a1a1a;
    --surface-elevated: #262626;
    --border-color: #333333;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent-blue: #0052ff;
    --accent-blue-hover: #0039b3;
    --accent-green: #00d4aa;
    --accent-purple: #8b5cf6;
    --gradient-primary: linear-gradient(135deg, #0052ff 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #00d4aa 0%, #0052ff 100%);
    
    /* Spacing System */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 0 1px rgba(255,255,255,0.05), 0 0 40px rgba(0,82,255,0.1);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Premium Typography Scale */
.text-display {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.text-hero {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

.text-section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.text-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
}

.text-body {
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
}

.text-caption {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.5;
}

/* Layout System */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Modern Card System */
.card {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-glow);
}

.card-elevated {
    background: var(--surface-elevated);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.card-elevated:hover {
    box-shadow: var(--shadow-xl);
}

/* Glass Morphism Cards */
.glass {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
}

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

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Chart Container */
.tv-chart {
    height: 520px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at top, rgba(0,82,255,0.15) 0%, transparent 50%),
                radial-gradient(ellipse at bottom, rgba(139,92,246,0.15) 0%, transparent 50%),
                var(--primary-bg);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(0,212,170,0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(0,82,255,0.1) 0%, transparent 50%);
    animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(1deg); }
    66% { transform: translateY(10px) rotate(-1deg); }
}

/* Modern Buttons */
.btn-primary {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: var(--space-md) var(--space-2xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    text-decoration: none;
    display: inline-block;
}

.btn-primary::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;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,82,255,0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: var(--space-md) var(--space-2xl);
    border-radius: var(--radius-lg);
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--surface-elevated);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

/* Modern Navigation */
.nav-modern {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.nav-modern.scrolled {
    background: rgba(0, 0, 0, 0.95);
    border-bottom-color: var(--accent-blue);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Crypto Ticker */
.crypto-ticker {
    background: var(--surface-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-md) 0;
}

.ticker-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.ticker-symbol {
    color: var(--accent-blue);
    font-weight: 600;
}

.ticker-price {
    color: var(--text-primary);
    font-weight: 700;
}

/* Form Elements */
.form-input {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0,82,255,0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Newsletter Section */
.newsletter-section {
    background: radial-gradient(ellipse at center, rgba(0,82,255,0.1) 0%, transparent 70%),
                var(--surface-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

/* Footer */
.footer-modern {
    background: var(--secondary-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-blue);
}

/* Utility Classes */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-spacing {
    padding: var(--space-4xl) 0;
}

.grid-modern {
    display: grid;
    gap: var(--space-xl);
}

.grid-3-cols {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-2-cols {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

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

*::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-md);
}

*::-webkit-scrollbar-thumb:hover {
    background: var(--accent-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --space-lg: 1rem;
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
        --space-3xl: 2.5rem;
        --space-4xl: 3rem;
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .hero-section {
        min-height: 80vh;
        text-align: center;
    }
    
    .tv-chart {
        height: 400px;
    }
    
    .grid-3-cols,
    .grid-2-cols {
        grid-template-columns: 1fr;
    }
    
    .nav-modern ul {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .btn-primary,
    .btn-secondary {
        padding: var(--space-md) var(--space-xl);
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .tv-chart {
        height: 300px;
    }
    
    .section-spacing {
        padding: var(--space-2xl) 0;
    }
    
    .card {
        padding: var(--space-lg);
    }
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-bg: #000000;
        --secondary-bg: #0a0a0a;
        --surface-bg: #1a1a1a;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #666666;
        --text-secondary: #cccccc;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}