:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #0d1117;
    --text-primary: #ffffff;
    --text-secondary: #a1a1a6;
    --text-tertiary: #86868b;
    
    /* Neon Green-Blue Gradient */
    --accent-primary: #00ff88;
    --accent-secondary: #00d4ff;
    --accent-tertiary: #00ffcc;
    --accent-gradient: linear-gradient(135deg, #00ff88 0%, #00d4ff 50%, #00ffcc 100%);
    --accent-glow: 0 0 30px rgba(0, 255, 136, 0.5), 0 0 60px rgba(0, 212, 255, 0.3);
    --accent-glow-strong: 0 0 40px rgba(0, 255, 136, 0.7), 0 0 80px rgba(0, 212, 255, 0.5);
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --font-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition-fast: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    -webkit-font-smoothing: antialiased; 
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.5;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition-fast); }
ul { list-style: none; }

h1, h2, h3, h4 { 
    font-weight: 700; 
    letter-spacing: -0.02em; 
    line-height: 1.1; 
}
h1 { font-size: clamp(3rem, 8vw, 6rem); }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); margin-bottom: var(--spacing-sm); }
h3 { font-size: 1.4rem; margin-bottom: var(--spacing-xs); }
p { color: var(--text-secondary); font-size: 1.1rem; font-weight: 400; }

.text-center { text-align: center; }
.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.3));
}

/* Layout */
.container { 
    width: 90%; 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 var(--spacing-sm); 
}
.section-padding { padding: var(--spacing-xl) 0; }
.bg-secondary { background-color: var(--bg-secondary); }

.grid-2 { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); 
    gap: var(--spacing-md); 
}
.grid-3 { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); 
    gap: var(--spacing-md); 
}

/* Navbar */
.navbar {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%;
    z-index: 1000; 
    padding: var(--spacing-sm) 0;
    transition: var(--transition-fast);
}
.glass-effect {
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 255, 136, 0.1);
}
.nav-container { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}
.logo { 
    font-weight: 700; 
    font-size: 1.25rem; 
    letter-spacing: -0.01em; 
}
.nav-links { display: none; }
@media (min-width: 768px) {
    .nav-links { display: flex; gap: var(--spacing-md); }
    .nav-links a { font-size: 0.9rem; color: var(--text-secondary); }
    .nav-links a:hover { 
        color: var(--accent-primary); 
        text-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
    }
}

/* Buttons */
.btn {
    display: inline-flex; 
    align-items: center; 
    justify-content: center;
    padding: 0.8rem 1.6rem; 
    border-radius: 999px;
    font-weight: 600; 
    font-size: 1rem; 
    cursor: pointer;
    border: none; 
    transition: var(--transition-fast);
}
.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }
.btn-large { padding: 1.2rem 2.4rem; font-size: 1.2rem; }
.btn-primary { 
    background: var(--accent-gradient); 
    color: #000; 
    font-weight: 700; 
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.3);
}
.btn-primary:hover { 
    box-shadow: var(--accent-glow-strong); 
    transform: scale(1.05); 
}
.btn-secondary { 
    background: rgba(0, 255, 136, 0.1); 
    color: var(--accent-primary); 
    border: 1px solid rgba(0, 255, 136, 0.3);
    margin-left: var(--spacing-sm); 
}
.btn-secondary:hover { 
    background: rgba(0, 255, 136, 0.2); 
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}

/* Hero */
.hero-section {
    padding-top: 120px;
    padding-bottom: var(--spacing-lg);
    text-align: center;
    min-height: 100vh;
    display: flex; 
    flex-direction: column; 
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at top, rgba(0, 255, 136, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 999px;
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.2);
}
.hero-title { 
    margin-bottom: 1rem; 
    text-shadow: 0 0 40px rgba(0, 255, 136, 0.3);
}
.hero-subtitle {
    font-size: clamp(1.5rem, 4vw, 2.8rem);
    font-weight: 700; 
    line-height: 1.15;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}
.hero-description { 
    max-width: 580px; 
    margin: 0 auto var(--spacing-md); 
}
.hero-buttons { margin-bottom: var(--spacing-lg); }

/* Hero Slideshow */
.hero-slideshow {
    display: flex; 
    flex-direction: column;
    align-items: center; 
    gap: 1.5rem;
    margin-top: var(--spacing-md);
}

.phone-frame {
    position: relative;
    width: 260px;
    height: 560px;
    background: #0a0a0a;
    border-radius: 44px;
    border: 3px solid rgba(0, 255, 136, 0.3);
    box-shadow: 
        0 30px 80px rgba(0,0,0,0.7), 
        0 0 40px rgba(0, 255, 136, 0.2),
        inset 0 0 0 1px rgba(0, 212, 255, 0.1);
    overflow: hidden;
}

.phone-notch {
    position: absolute;
    top: 0; 
    left: 50%;
    transform: translateX(-50%);
    width: 100px; 
    height: 28px;
    background: #0a0a0a;
    border-radius: 0 0 18px 18px;
    z-index: 10;
}

.phone-screen {
    position: relative;
    width: 100%; 
    height: 100%;
    overflow: hidden;
    border-radius: 38px;
    background: #000;
}

.hero-slide {
    position: absolute;
    top: 0; 
    left: 0;
    width: 100%; 
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}
.hero-slide.active { opacity: 1; }

.slide-dots {
    display: flex; 
    gap: 8px;
}
.dot {
    width: 8px; 
    height: 8px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    cursor: pointer;
    transition: var(--transition-fast);
}
.dot.active { 
    background: var(--accent-primary); 
    transform: scale(1.3); 
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.5);
}

/* Tagline */
.tagline-section { background: var(--bg-primary); }
.tagline {
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

/* Features */
.features-grid { margin-top: var(--spacing-lg); }
.feature-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 255, 136, 0.1);
    transition: var(--transition-fast);
}
.feature-card:hover { 
    transform: translateY(-5px); 
    border-color: rgba(0, 255, 136, 0.4);
    box-shadow: 0 10px 40px rgba(0, 255, 136, 0.2);
}
.feature-icon { 
    font-size: 2.2rem; 
    margin-bottom: var(--spacing-sm); 
}

/* How it works */
.steps-container {
    display: flex; 
    flex-direction: column;
    gap: var(--spacing-md); 
    margin-top: var(--spacing-lg);
}
@media (min-width: 768px) {
    .steps-container { 
        flex-direction: row; 
        justify-content: space-between; 
    }
}
.step { 
    flex: 1; 
    position: relative; 
    padding: var(--spacing-md); 
}
.step-number {
    font-size: 4rem; 
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.2;
    position: absolute; 
    top: 0; 
    left: 0;
    line-height: 1; 
    z-index: 0;
}
.step-content { 
    position: relative; 
    z-index: 1; 
    margin-top: 1rem; 
}

/* Detail features */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}
.detail-item {
    display: flex; 
    gap: 1rem; 
    align-items: flex-start;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 255, 136, 0.1);
    transition: var(--transition-fast);
}
.detail-item:hover { 
    border-color: rgba(0, 255, 136, 0.4); 
    transform: translateY(-3px); 
    box-shadow: 0 10px 30px rgba(0, 255, 136, 0.15);
}
.detail-icon { 
    font-size: 2rem; 
    flex-shrink: 0; 
}
.detail-item h4 { 
    color: var(--text-primary); 
    margin-bottom: 0.4rem; 
    font-size: 1.1rem; 
}

/* CTA Final */
.cta-final { 
    background: var(--bg-primary); 
    position: relative;
}
.cta-final::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

/* Contact */
.contact-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    max-width: 400px;
    margin: 2rem auto;
    border: 1px solid rgba(0, 255, 136, 0.2);
}

/* Footer */
.footer { 
    border-top: 1px solid rgba(0, 255, 136, 0.1); 
    padding: var(--spacing-lg) 0; 
}
.footer-content { 
    display: flex; 
    flex-direction: column; 
    gap: var(--spacing-lg); 
}
@media (min-width: 768px) { 
    .footer-content { 
        flex-direction: row; 
        justify-content: space-between; 
    } 
}
.footer-links { 
    display: flex; 
    gap: var(--spacing-lg); 
    flex-wrap: wrap; 
}
.link-group { 
    display: flex; 
    flex-direction: column; 
    gap: 0.5rem; 
}
.link-group h4 { 
    font-size: 0.9rem; 
    text-transform: uppercase; 
    color: var(--text-tertiary); 
    margin-bottom: 0.5rem; 
}
.link-group a { color: var(--text-secondary); }
.link-group a:hover { 
    color: var(--accent-primary); 
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in-up { 
    opacity: 0; 
    animation: fadeInUp 0.8s var(--transition-smooth) forwards; 
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

.scroll-reveal { 
    opacity: 0; 
    transform: translateY(30px); 
    transition: all 0.8s var(--transition-smooth); 
}
.scroll-reveal.active { 
    opacity: 1; 
    transform: translateY(0); 
}

/* Section titles */
.section-title { margin-bottom: var(--spacing-sm); }
.section-description { font-size: 1.1rem; }

@media (max-width: 768px) {
    .section-padding { padding: 4rem 0; }
    .hero-section { padding-top: 100px; }
    .phone-frame { width: 220px; height: 475px; }
}