@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #111111;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-tertiary: #666666;
    --accent-primary: #0ea5e9;
    --accent-glow: rgba(14, 165, 233, 0.3);
    --border-color: rgba(255, 255, 255, 0.08);
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Animated Background Grid */
.grid-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 100px 100px;
    z-index: 0;
    pointer-events: none;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

/* Gradient Orbs */
.gradient-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
    z-index: 1;
    transition: transform 0.3s ease-out;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-primary), transparent);
    top: -200px;
    right: -200px;
    animation: float 15s ease-in-out infinite;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #3b82f6, transparent);
    bottom: -150px;
    left: -150px;
    animation: float 20s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(50px, -50px) scale(1.1); }
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    animation: slideDown 0.6s var(--transition-smooth);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--accent-primary);
    transition: transform 0.3s ease;
}

.logo:hover .logo-icon {
    transform: rotate(180deg);
}

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

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s var(--transition-smooth);
}

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

.nav-link:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 40px 80px;
}

.hero-content {
    max-width: 1000px;
    text-align: center;
}

.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 32px;
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s var(--transition-smooth) 0.2s both;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(18px, 2vw, 22px);
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s var(--transition-smooth) 0.4s both;
}

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

/* CTA Buttons */
.cta-container {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 80px;
    animation: fadeInUp 0.8s var(--transition-smooth) 0.6s both;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 36px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.cta-button.primary {
    background: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: 0 0 40px var(--accent-glow);
}

.cta-button.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;
}

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

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px var(--accent-glow);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.button-arrow {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.cta-button:hover .button-arrow {
    transform: translateX(4px);
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp 0.8s var(--transition-smooth) 0.8s both;
}

.stat {
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s var(--transition-smooth) both;
}

.stat:nth-child(1) { animation-delay: 0.9s; }
.stat:nth-child(3) { animation-delay: 1.0s; }
.stat:nth-child(5) { animation-delay: 1.1s; }

.stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 14px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

/* Features Section */
.features {
    position: relative;
    z-index: 2;
    padding: 120px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px;
    transition: all 0.4s var(--transition-smooth);
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(14, 165, 233, 0.3);
    transform: translateY(-8px);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 24px;
    color: var(--accent-primary);
    transition: transform 0.4s var(--transition-smooth);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Footer */
.footer {
    position: relative;
    z-index: 2;
    padding: 60px 40px;
    border-top: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.5);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-text {
    color: var(--text-tertiary);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 16px 24px;
    }

    .nav-links {
        gap: 20px;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    .hero-title {
        margin-bottom: 24px;
    }

    .hero-subtitle {
        margin-bottom: 32px;
    }

    .cta-container {
        flex-direction: column;
        gap: 16px;
        margin-bottom: 60px;
    }

    .cta-button {
        width: 100%;
        justify-content: center;
    }

    .stats {
        gap: 32px;
    }

    .stat-divider {
        display: none;
    }

    .features {
        padding: 80px 24px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .feature-card {
        padding: 32px;
    }

    .footer {
        padding: 40px 24px;
    }

    .footer-links {
        flex-direction: column;
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 18px;
    }

    .logo-icon {
        width: 24px;
        height: 24px;
    }

    .nav-links {
        gap: 16px;
    }

    .nav-link {
        font-size: 14px;
    }

    .stat-value {
        font-size: 28px;
    }

    .stat-label {
        font-size: 12px;
    }
}

/* Selection styling */
::selection {
    background: var(--accent-primary);
    color: var(--text-primary);
}

::-moz-selection {
    background: var(--accent-primary);
    color: var(--text-primary);
}