/* Ink Check Landing Page */

/* Design Tokens */
:root {
    /* Colors - Brand */
    --color-primary: #06B6D4;
    --color-primary-dark: #0891B2;
    --color-primary-light: #22D3EE;
    --color-primary-glow: rgba(6, 182, 212, 0.4);
    --color-primary-subtle: rgba(6, 182, 212, 0.1);

    /* Colors - Semantic */
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;
    --color-gold: #F59E0B;

    /* Colors - Surface */
    --color-bg: #09090F;
    --color-bg-elevated: #18181B;
    --color-bg-tertiary: #27272A;
    --color-surface: #1C1C1E;

    /* Colors - Text */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #A1A1AA;
    --color-text-tertiary: #71717A;

    /* Colors - Border */
    --color-border: #3F3F46;
    --color-border-subtle: #27272A;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --shadow-glow-lg: 0 0 40px var(--color-primary-glow);

    /* Transitions - Using cubic-bezier for smoother motion */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

    --transition-fast: 150ms var(--ease-in-out);
    --transition-base: 300ms var(--ease-out-expo);
    --transition-slow: 500ms var(--ease-out-expo);
    --transition-spring: 600ms var(--ease-out-back);

    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: var(--font-family);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(6, 182, 212, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(139, 92, 246, 0.08), transparent),
        radial-gradient(ellipse 50% 30% at 0% 100%, rgba(34, 197, 94, 0.06), transparent);
    overflow-x: hidden;
    position: relative;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
}

/* Background Effects */
.global-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.noise-overlay {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    mix-blend-mode: overlay;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    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: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent);
}

.gradient-orbs {
    position: absolute;
    inset: 0;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: orbFloat 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.3), transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2), transparent 70%);
    bottom: 20%;
    left: -150px;
    animation-delay: -7s;
    animation-duration: 25s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.15), transparent 70%);
    top: 60%;
    right: -100px;
    animation-delay: -14s;
    animation-duration: 30s;
}

@keyframes orbFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    25% {
        transform: translate(30px, -20px) scale(1.05);
    }
    50% {
        transform: translate(-20px, 30px) scale(0.95);
    }
    75% {
        transform: translate(-30px, -10px) scale(1.02);
    }
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(9, 9, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border-subtle);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.header.scrolled {
    background: rgba(9, 9, 15, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-spring);
}

.logo:hover .logo-icon {
    transform: rotate(-5deg);
}

.logo-text {
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast), transform var(--transition-fast);
    position: relative;
}

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

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

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

.nav-cta {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-bg);
    background: var(--color-primary);
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    box-shadow: 0 2px 10px rgba(6, 182, 212, 0.3);
}

.nav-cta:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(6, 182, 212, 0.4);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-bg-elevated);
    padding: var(--space-6);
    border-bottom: 1px solid var(--color-border-subtle);
    flex-direction: column;
    gap: var(--space-4);
    z-index: 999;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu.active {
    display: flex;
    transform: translateY(0);
    opacity: 1;
}

.mobile-link {
    font-size: var(--text-lg);
    font-weight: 500;
    color: var(--color-text-secondary);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border-subtle);
    transition: color var(--transition-fast), padding-left var(--transition-base);
}

.mobile-link:hover {
    color: var(--color-primary);
    padding-left: var(--space-2);
}

.mobile-cta {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-bg);
    background: var(--color-primary);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    text-align: center;
    margin-top: var(--space-4);
    transition: background var(--transition-fast);
}

.mobile-cta:hover {
    background: var(--color-primary-light);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.hero-glow {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 1200px;
    height: 1200px;
    background:
        radial-gradient(circle at 30% 40%, rgba(6, 182, 212, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(139, 92, 246, 0.2) 0%, transparent 40%);
    opacity: 0.5;
    filter: blur(80px);
    animation: pulseGlow 10s ease-in-out infinite;
}

.hero-glow-secondary {
    position: absolute;
    top: 40%;
    right: 10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(34, 197, 94, 0.2) 0%, transparent 60%);
    filter: blur(100px);
    animation: pulseGlow 12s ease-in-out infinite reverse;
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 15s ease-in-out infinite;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; top: 60%; animation-delay: 2s; }
.particle:nth-child(3) { left: 80%; top: 30%; animation-delay: 4s; }
.particle:nth-child(4) { left: 70%; top: 70%; animation-delay: 6s; }
.particle:nth-child(5) { left: 40%; top: 80%; animation-delay: 8s; }
.particle:nth-child(6) { left: 90%; top: 50%; animation-delay: 10s; }

@keyframes particleFloat {
    0%, 100% {
        opacity: 0;
        transform: translateY(0) scale(0);
    }
    10% {
        opacity: 0.6;
        transform: translateY(-20px) scale(1);
    }
    90% {
        opacity: 0.6;
        transform: translateY(-100px) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-120px) scale(0);
    }
}

.hero-lines {
    position: absolute;
    inset: 0;
    overflow: hidden;
    opacity: 0.1;
}

.line {
    position: absolute;
    width: 1px;
    height: 200px;
    background: linear-gradient(to bottom, transparent, var(--color-primary), transparent);
    animation: lineMove 8s ease-in-out infinite;
}

.line:nth-child(1) { left: 20%; animation-delay: 0s; }
.line:nth-child(2) { left: 50%; animation-delay: 2.5s; }
.line:nth-child(3) { left: 80%; animation-delay: 5s; }

@keyframes lineMove {
    0% {
        transform: translateY(-200px);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh);
        opacity: 0;
    }
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.4; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.6; transform: translateX(-50%) scale(1.15); }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
    position: relative;
    z-index: 1;
    padding: var(--space-12) 0;
}

.hero-content {
    max-width: 560px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-primary-subtle);
    border: 1px solid rgba(6, 182, 212, 0.2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-6);
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out-expo) 0.1s forwards;
}

.badge-icon {
    display: flex;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-6);
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out-expo) 0.2s forwards;
}

.highlight {
    color: var(--color-primary);
    position: relative;
}

.hero-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-10);
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out-expo) 0.3s forwards;
}

.hero-subtitle strong {
    color: var(--color-text-primary);
    font-weight: 600;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out-expo) 0.4s forwards;
}

.hero-trust {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    font-size: var(--text-base);
    font-weight: 600;
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    color: var(--color-bg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-lg);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-glow {
    box-shadow: 0 0 30px var(--color-primary-glow);
    animation: buttonPulse 3s ease-in-out infinite;
}

@keyframes buttonPulse {
    0%, 100% { box-shadow: 0 0 20px var(--color-primary-glow); }
    50% { box-shadow: 0 0 40px var(--color-primary-glow); }
}

.btn-large {
    font-size: var(--text-lg);
    padding: var(--space-5) var(--space-10);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeInRight 1s var(--ease-out-expo) 0.5s forwards;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.phone-mockup {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.phone-frame {
    width: 280px;
    height: 580px;
    background: var(--color-bg-elevated);
    border-radius: 44px;
    border: 3px solid var(--color-border);
    padding: 12px;
    position: relative;
    box-shadow:
        0 0 0 1px var(--color-border-subtle),
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.phone-notch {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 28px;
    background: var(--color-bg);
    border-radius: 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    border-radius: 34px;
    overflow: hidden;
}

.phone-glow {
    position: absolute;
    inset: -30px;
    background: radial-gradient(circle at 50% 30%, var(--color-primary-glow), transparent 60%);
    opacity: 0.6;
    filter: blur(50px);
    z-index: -1;
    animation: phoneGlow 4s ease-in-out infinite;
}

@keyframes phoneGlow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.7; }
}

/* Analyze Interface - 60fps smooth animations */
.analyze-interface {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 48px 20px 16px;
    background: linear-gradient(180deg, #0a0a0f 0%, #0d0d14 100%);
    will-change: contents;
}

.image-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-height: 180px;
}

.image-frame {
    position: relative;
    width: 160px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(20, 20, 28, 0.9);
    border-radius: 16px;
    overflow: hidden;
}

.tattoo-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    opacity: 0.85;
}

/* Smooth scanning beam */
.scan-beam {
    position: absolute;
    left: 8px;
    right: 8px;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--color-primary) 20%, 
        var(--color-primary-light) 50%, 
        var(--color-primary) 80%, 
        transparent 100%
    );
    border-radius: 2px;
    box-shadow: 
        0 0 12px var(--color-primary),
        0 0 24px rgba(6, 182, 212, 0.5);
    will-change: transform;
    animation: beamScan 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes beamScan {
    0% { transform: translateY(-70px); opacity: 0; }
    5% { opacity: 1; }
    48% { transform: translateY(70px); opacity: 1; }
    52% { opacity: 0; }
    100% { transform: translateY(-70px); opacity: 0; }
}

/* Corner brackets */
.frame-corners {
    position: absolute;
    inset: -4px;
    pointer-events: none;
}

.fc {
    position: absolute;
    width: 16px;
    height: 16px;
    border-color: var(--color-primary);
    border-style: solid;
    opacity: 0.9;
}

.fc-tl { top: 0; left: 0; border-width: 2px 0 0 2px; border-radius: 4px 0 0 0; }
.fc-tr { top: 0; right: 0; border-width: 2px 2px 0 0; border-radius: 0 4px 0 0; }
.fc-bl { bottom: 0; left: 0; border-width: 0 0 2px 2px; border-radius: 0 0 0 4px; }
.fc-br { bottom: 0; right: 0; border-width: 0 2px 2px 0; border-radius: 0 0 4px 0; }

/* Detection nodes */
.detection-nodes {
    position: absolute;
    inset: 20px;
}

.node {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    will-change: transform, opacity;
    animation: nodeReveal 4s ease-in-out infinite;
}

.n1 { top: 15%; left: 25%; animation-delay: 0s; }
.n2 { top: 30%; right: 20%; animation-delay: 0.6s; }
.n3 { top: 55%; left: 18%; animation-delay: 1.2s; }
.n4 { bottom: 25%; right: 25%; animation-delay: 1.8s; }
.n5 { bottom: 15%; left: 40%; animation-delay: 2.4s; }

@keyframes nodeReveal {
    0%, 100% { transform: scale(0); opacity: 0; }
    15% { transform: scale(1.3); opacity: 1; }
    30% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 0.6; }
    70% { transform: scale(0.8); opacity: 0.3; }
    85% { transform: scale(0); opacity: 0; }
}

/* Pulse loader */
.pulse-loader {
    position: relative;
    width: 56px;
    height: 56px;
    margin: var(--space-4) 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pulse-ring {
    position: absolute;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: pulseExpand 2s ease-out infinite;
}

@keyframes pulseExpand {
    0% {
        transform: scale(1);
        opacity: 0.6;
    }
    100% {
        transform: scale(2.2);
        opacity: 0;
    }
}

.pulse-dot {
    width: 12px;
    height: 12px;
    background: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--color-primary);
    animation: dotPulse 1s ease-in-out infinite;
}

@keyframes dotPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* Status text */
.analysis-status {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    min-height: 20px;
}

.status-text {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: opacity 0.3s ease;
}

/* Stage progress */
.stage-progress {
    display: flex;
    align-items: center;
    gap: 0;
    padding: var(--space-3) var(--space-4);
    background: rgba(20, 20, 28, 0.6);
    border-radius: var(--radius-lg);
    width: 100%;
}

.stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.stage-dot {
    width: 8px;
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: 50%;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.stage.active .stage-dot {
    background: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary);
    animation: stagePulse 1.5s ease-in-out infinite;
}

@keyframes stagePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

.stage span {
    font-size: 9px;
    font-weight: 500;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color 0.3s;
}

.stage.active span {
    color: var(--color-primary);
}

.stage-line {
    flex: 0.5;
    height: 2px;
    background: var(--color-bg-tertiary);
    margin: 0 4px;
    margin-bottom: 18px;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-text-tertiary);
    font-size: var(--text-sm);
    opacity: 0;
    animation: fadeIn 1s var(--ease-out-expo) 1s forwards, bounce 2s ease-in-out 1.5s infinite;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Social Proof */
.social-proof {
    padding: var(--space-20) 0;
    background:
        linear-gradient(180deg, var(--color-bg-elevated) 0%, rgba(24, 24, 27, 0.8) 100%),
        radial-gradient(ellipse 100% 100% at 50% 100%, rgba(6, 182, 212, 0.05), transparent);
    border-top: 1px solid var(--color-border-subtle);
    border-bottom: 1px solid var(--color-border-subtle);
    position: relative;
    overflow: hidden;
}

.social-proof::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 600px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.5;
}

.proof-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-20);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--text-4xl);
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
    line-height: 1;
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-3);
}

/* Section Styles */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.section-tag {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-5);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Features */
.features {
    padding: var(--space-32) 0;
    position: relative;
    background:
        radial-gradient(ellipse 80% 50% at 20% 80%, rgba(6, 182, 212, 0.06), transparent),
        radial-gradient(ellipse 60% 40% at 80% 20%, rgba(139, 92, 246, 0.04), transparent);
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(180deg, var(--color-bg-elevated), transparent);
    pointer-events: none;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.feature-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-2xl);
    padding: var(--space-10);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-border);
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-xl);
    background: var(--color-primary-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
    color: var(--icon-color, var(--color-primary));
    transition: transform var(--transition-spring), background var(--transition-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(-5deg);
    background: rgba(6, 182, 212, 0.2);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-3);
}

.feature-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* How It Works */
.how-it-works {
    padding: var(--space-32) 0;
    background:
        linear-gradient(180deg, var(--color-bg-elevated) 0%, var(--color-bg) 50%, var(--color-bg-elevated) 100%),
        radial-gradient(ellipse 100% 80% at 50% 0%, rgba(6, 182, 212, 0.08), transparent);
    position: relative;
}

.how-it-works::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.01) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse 60% 50% at 50% 50%, black 30%, transparent 70%);
    pointer-events: none;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-8);
    align-items: center;
    padding: var(--space-8) var(--space-10);
    background: var(--color-bg);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
    position: relative;
}

.step:hover {
    border-color: var(--color-border);
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-bg);
    font-size: var(--text-2xl);
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-2);
}

.step-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.step-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 88px;
    height: 88px;
    border-radius: var(--radius-2xl);
    background: var(--color-primary-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-spring);
}

.step:hover .step-icon {
    transform: scale(1.1);
}

/* Testimonials */
.testimonials {
    padding: var(--space-32) 0;
    position: relative;
    background:
        radial-gradient(ellipse 60% 40% at 0% 50%, rgba(245, 158, 11, 0.05), transparent),
        radial-gradient(ellipse 60% 40% at 100% 50%, rgba(6, 182, 212, 0.05), transparent);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.testimonial {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-base);
}

.testimonial:hover {
    border-color: var(--color-border);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.testimonial-stars {
    display: flex;
    gap: var(--space-1);
    margin-bottom: var(--space-5);
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-5);
    font-style: italic;
}

.testimonial-author {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    font-style: normal;
}

/* FAQ */
.faq {
    padding: var(--space-32) 0;
    background:
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 20%, var(--color-bg-elevated) 80%, var(--color-bg) 100%);
    position: relative;
}

.faq::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.03), transparent 60%);
    pointer-events: none;
}

.faq-list {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.faq-item {
    background: var(--color-bg);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    border-color: var(--color-border);
}

.faq-item[open] {
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-6) var(--space-8);
    cursor: pointer;
    font-size: var(--text-lg);
    font-weight: 600;
    list-style: none;
    transition: all var(--transition-fast);
    gap: var(--space-4);
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question:hover {
    background: var(--color-bg-tertiary);
}

.faq-question span {
    flex: 1;
}

.faq-question svg {
    flex-shrink: 0;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-base);
}

.faq-item[open] .faq-question svg {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.faq-answer {
    padding: 0 var(--space-8) var(--space-6);
    animation: fadeInDown 0.3s var(--ease-out-expo);
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-answer p {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* CTA */
.cta {
    padding: var(--space-32) 0;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(ellipse 80% 60% at 50% 100%, rgba(6, 182, 212, 0.1), transparent);
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1000px;
    height: 1000px;
    background:
        radial-gradient(circle at 30% 50%, rgba(6, 182, 212, 0.3) 0%, transparent 40%),
        radial-gradient(circle at 70% 50%, rgba(139, 92, 246, 0.2) 0%, transparent 40%);
    opacity: 0.4;
    filter: blur(80px);
    animation: ctaGlow 10s ease-in-out infinite;
}

.cta::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0.3;
}

@keyframes ctaGlow {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1) rotate(0deg); }
    50% { opacity: 0.5; transform: translate(-50%, -50%) scale(1.1) rotate(5deg); }
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--text-4xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-5);
}

.cta-subtitle {
    font-size: var(--text-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-10);
    line-height: 1.6;
}

.cta-trust {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--space-5);
}

/* Footer */
.footer {
    padding: var(--space-20) 0 var(--space-10);
    background:
        linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 30%),
        radial-gradient(ellipse 80% 50% at 50% 100%, rgba(6, 182, 212, 0.05), transparent);
    border-top: 1px solid var(--color-border-subtle);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(6, 182, 212, 0.3), transparent);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--space-10);
    border-bottom: 1px solid var(--color-border-subtle);
    margin-bottom: var(--space-10);
}

.footer-brand .logo {
    margin-bottom: var(--space-3);
}

.footer-tagline {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.footer-links {
    display: flex;
    gap: var(--space-10);
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

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

.footer-links a:hover::after {
    width: 100%;
}

.footer-bottom {
    text-align: center;
}

.footer-disclaimer {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    max-width: 640px;
    margin: 0 auto var(--space-5);
    line-height: 1.7;
}

.footer-copyright {
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll:nth-child(1) { transition-delay: 0s; }
.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-12);
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        align-items: center;
    }

    .hero-visual {
        animation-name: fadeInUp;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .proof-stats {
        gap: var(--space-12);
    }
}

@media (max-width: 768px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
        --space-32: 4rem;
        --container-padding: 1.25rem;
    }

    .container {
        padding-left: var(--container-padding);
        padding-right: var(--container-padding);
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .header {
        padding: var(--space-3) 0;
    }

    .hero {
        padding-top: 90px;
        min-height: auto;
        padding-bottom: var(--space-12);
    }

    .hero-title {
        font-size: 2.25rem;
        line-height: 1.15;
    }

    .hero-subtitle {
        font-size: var(--text-base);
        padding: 0 var(--space-2);
    }

    .btn {
        padding: var(--space-4) var(--space-6);
        font-size: var(--text-base);
        min-height: 52px;
    }

    .phone-frame {
        width: 220px;
        height: 460px;
        border-radius: 36px;
    }

    .phone-screen {
        border-radius: 28px;
    }

    .section-header {
        margin-bottom: var(--space-10);
    }

    .section-title {
        font-size: var(--text-3xl);
    }

    .section-subtitle {
        font-size: var(--text-base);
        padding: 0;
    }

    .proof-stats {
        flex-direction: column;
        gap: var(--space-6);
        padding: var(--space-8) var(--space-4);
    }

    .stat-number {
        font-size: var(--text-3xl);
    }

    .features, .how-it-works, .testimonials, .faq {
        padding: var(--space-16) 0;
    }

    .feature-card {
        padding: var(--space-6);
    }

    .step {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-4);
        padding: var(--space-5);
    }

    .step:hover {
        transform: translateY(-4px);
    }

    .step-number {
        margin: 0 auto;
        width: 40px;
        height: 40px;
        font-size: var(--text-lg);
    }

    .step-visual {
        display: none;
    }

    .testimonial {
        padding: var(--space-5);
    }

    .testimonial-text {
        font-size: var(--text-base);
    }

    .cta {
        padding: var(--space-16) 0;
    }

    .cta-title {
        font-size: var(--text-3xl);
    }

    .footer-content {
        flex-direction: column;
        gap: var(--space-8);
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-5);
    }

    .footer-links a {
        padding: var(--space-2) var(--space-3);
    }

    .scroll-indicator {
        display: none;
    }

    .mobile-menu {
        padding: var(--space-6) var(--container-padding);
    }

    .mobile-link, .mobile-cta {
        padding: var(--space-4);
        font-size: var(--text-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
        --text-5xl: 1.875rem;
        --space-32: 3rem;
    }

    .hero {
        padding-top: 80px;
    }

    .hero-title {
        font-size: 1.875rem;
        letter-spacing: -0.02em;
    }

    .hero-subtitle {
        font-size: 0.9375rem;
    }

    .badge {
        font-size: var(--text-xs);
        padding: var(--space-2) var(--space-3);
    }

    .btn {
        width: 100%;
        min-height: 56px;
        font-size: var(--text-base);
    }

    .hero-trust {
        font-size: var(--text-xs);
    }

    .phone-frame {
        width: 180px;
        height: 380px;
        border-radius: 28px;
    }

    .image-frame {
        width: 130px;
        height: 150px;
    }

    .section-tag {
        font-size: var(--text-xs);
    }

    .section-title {
        font-size: 1.5rem;
    }

    .feature-card {
        padding: var(--space-5);
    }

    .feature-title {
        font-size: var(--text-lg);
    }

    .step-title {
        font-size: var(--text-lg);
    }

    .faq-question {
        padding: var(--space-4);
        font-size: var(--text-sm);
        gap: var(--space-3);
    }

    .faq-answer {
        padding: 0 var(--space-4) var(--space-4);
    }

    .faq-answer p {
        font-size: var(--text-sm);
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .cta-subtitle {
        font-size: var(--text-base);
    }

    .footer {
        padding: var(--space-12) 0 var(--space-8);
    }

    .footer-disclaimer {
        font-size: 0.6875rem;
    }
}

@media (max-width: 375px) {
    :root {
        --container-padding: 0.875rem;
    }

    .hero-title {
        font-size: 1.625rem;
    }

    .phone-frame {
        width: 160px;
        height: 340px;
    }

    .image-frame {
        width: 110px;
        height: 130px;
    }

    .section-title {
        font-size: 1.375rem;
    }

    .proof-stats {
        gap: var(--space-5);
    }
}

@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }
    
    .footer {
        padding-bottom: max(var(--space-8), env(safe-area-inset-bottom));
    }
}

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

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

    html {
        scroll-behavior: auto;
    }

    .phone-mockup {
        animation: none;
    }

    .hero-glow {
        animation: none;
    }
}