/* AetherRelay Design System - Premium Dark Mode */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-color: #0c0d12;
    --card-bg: #1a1c26;
    --primary-gradient: linear-gradient(135deg, #4A6CF7 0%, #8A3FFC 100%);
    --text-primary: #ffffff;
    --text-secondary: #a0a6b5;
    --accent-blue: #4A6CF7;
    --accent-purple: #8A3FFC;
    --nav-height: 80px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    width: 100%;
}

body.no-scroll {
    overflow: hidden;
}

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

/* Navigation */
nav {
    height: var(--nav-height);
    width: 100%;
    position: sticky;
    top: 0;
    background: rgba(12, 13, 18, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo span {
    font-size: 24px;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.mobile-nav-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.mobile-nav-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-nav-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 30px;
    transition: right 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    z-index: 1000;
    padding: 40px;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 700;
    transition: color 0.3s;
}

.mobile-menu .btn {
    font-size: 18px;
    width: 100%;
    justify-content: center;
}

/* Hero Section */
.hero {
    padding: 100px 0;
    text-align: center;
    position: relative;
    width: 100%;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 80vw;
    height: 80vw;
    max-width: 800px;
    max-height: 800px;
    background: radial-gradient(circle, rgba(74, 108, 247, 0.15) 0%, rgba(138, 63, 252, 0.15) 100%);
    filter: blur(100px);
    z-index: -1;
}

.hero h1 {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -2px;
    line-height: 1.1;
}

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

.hero p {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 48px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 16px 32px;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.btn-secondary {
    background: var(--card-bg);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Mockup */
.mockup-container {
    margin-top: 80px;
    position: relative;
}

.mockup-container img {
    max-width: 100%;
    height: auto;
    border-radius: 40px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    border: 8px solid var(--card-bg);
}

/* Features */
.features {
    padding: 100px 0;
    width: 100%;
}

.section-tag {
    color: var(--accent-blue);
    font-weight: 800;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 16px;
    text-align: center;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 64px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--card-bg);
    padding: 48px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-blue);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(74, 108, 247, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--accent-blue);
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Footer */
footer {
    padding: 80px 0 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    width: 100%;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 60px;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-links {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-column h4 {
    margin-bottom: 24px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.footer-column a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 60px 0;
        overflow: hidden;
    }
    
    .hero h1 {
        font-size: 42px;
        letter-spacing: -1px;
    }

    .hero p {
        font-size: 17px;
        padding: 0 10px;
    }
    
    .mockup-container {
        margin-top: 40px;
    }

    .mockup-container img {
        width: 240px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: 30px;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 60px;
    }
    
    .footer-links {
        justify-content: center;
        gap: 60px;
        width: 100%;
    }

    .footer-column {
        align-items: center;
    }
}