/* Base Variables */
:root {
    --bg-color: #05050A;
    --card-bg: rgba(20, 20, 30, 0.4);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-main: #E2E8F0;
    --text-muted: #94A3B8;
    --accent-blue: #3B82F6;
    --accent-purple: #8B5CF6;
    --accent-glow: rgba(59, 130, 246, 0.5);
    
    --font-heading: 'Outfit', system-ui, -apple-system, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

/* Reset & Scaffolding */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

h1, h2, h3 {
    font-family: var(--font-heading);
    color: #FFFFFF;
    line-height: 1.2;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Backgrounds */
.background-mesh {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background-image: url('./assets/hero_bg.png');
    background-size: cover;
    background-position: center;
    opacity: 0.25;
    mix-blend-mode: screen;
}

/* Header */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    transition: background 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: 0.5px;
}

nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

nav a {
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

nav a:hover {
    color: var(--accent-blue);
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-family: var(--font-body);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
}

.btn-secondary {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-main);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-outline:hover {
    background: white;
    color: black;
}

/* Hero Section */
.hero {
    padding: 180px 0 100px;
    min-height: 90vh;
    display: flex;
    align-items: center;
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 64px;
}

.hero-text {
    flex: 1;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    background: rgba(139, 92, 246, 0.15);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: #A78BFA;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 24px;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.15rem;
    margin-bottom: 40px;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

.hero-visual {
    flex: 1;
    position: relative;
    min-width: 0;
}

.app-mockup {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    border: 1px solid var(--card-border);
    position: relative;
    z-index: 2;
    background: #000;
}

.shadow-glow {
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.8), 0 0 60px rgba(59, 130, 246, 0.2);
}

/* Glass Panels */
.glass-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 16px;
}

/* Features Grid */
#features {
    padding: 100px 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.2);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Split Layout Section */
.layout-split {
    padding: 100px 24px;
    display: flex;
    align-items: center;
    gap: 80px;
}

.layout-split:nth-child(even) {
    flex-direction: row-reverse;
}

.split-visual {
    flex: 1;
    min-width: 0;
}

.concept-art {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 16px;
    border: 1px solid var(--card-border);
}

.split-text {
    flex: 1;
}

.split-text h2 {
    font-size: 2.5rem;
    margin-bottom: 24px;
}

.split-text p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.check-list {
    list-style: none;
}

.check-list li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 20px;
    color: var(--text-muted);
}

.check-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-purple);
    font-weight: bold;
    background: rgba(139, 92, 246, 0.2);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.75rem;
}

.check-list strong {
    color: var(--text-main);
}

/* Footer */
footer {
    padding: 60px 24px;
    margin-top: 60px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 32px 48px;
}

.footer-content .logo {
    margin-bottom: 8px;
}

.footer-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--text-main);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Responsive */
@media (max-width: 960px) {
    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 48px;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        margin: 0 auto 40px;
    }
    
    .layout-split {
        flex-direction: column !important;
        text-align: center;
        gap: 48px;
    }
    
    .check-list li {
        text-align: left;
    }
}

@media (max-width: 640px) {
    .header-container {
        flex-direction: column;
        justify-content: center;
        height: auto;
        padding: 16px 0;
        gap: 16px;
    }

    nav {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
}