/* ==========================================
   FormOS Website - Premium Design System
   Inspired by Linear, Arc, Notion
   ========================================== */

/* CSS Variables */
:root {
    /* Colors - Dark Theme with Neon Accents */
    --bg-primary: #0A0A0F;
    --bg-secondary: #111118;
    --bg-tertiary: #1A1A24;
    --bg-card: rgba(26, 26, 36, 0.6);
    --bg-card-hover: rgba(36, 36, 50, 0.8);

    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.65);

    /* Neon Colors */
    --cyan: #00D9FF;
    --cyan-glow: rgba(0, 217, 255, 0.3);
    --magenta: #FF2D92;
    --magenta-glow: rgba(255, 45, 146, 0.3);
    --lime: #A3E635;
    --lime-glow: rgba(163, 230, 53, 0.3);
    --purple: #A855F7;
    --purple-glow: rgba(168, 85, 247, 0.3);
    --orange: #FF6B35;
    --orange-glow: rgba(255, 107, 53, 0.3);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--cyan), var(--magenta));
    --gradient-hero: linear-gradient(180deg, rgba(0, 217, 255, 0.1) 0%, transparent 50%);
    --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);

    /* Borders */
    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow-cyan: 0 0 40px var(--cyan-glow);
    --shadow-glow-magenta: 0 0 40px var(--magenta-glow);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

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

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

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

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

/* Focus states for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--cyan);
    outline-offset: 2px;
}

ul {
    list-style: none;
}

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

/* ==========================================
   Navigation
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--spacing-sm) 0;
    background: rgba(10, 10, 15, 0.95);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

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

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

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

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

.nav-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--text-primary);
    color: var(--bg-primary);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.nav-cta-dot {
    width: 8px;
    height: 8px;
    background: var(--lime);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.apple-icon {
    width: 16px;
    height: 16px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-4xl);
    overflow: hidden;
}

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

.hero-gradient {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1400px;
    height: 600px;
    background: radial-gradient(ellipse at center top, var(--cyan-glow) 0%, transparent 60%);
    opacity: 0.6;
}

.hero-grid {
    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: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
}

.hero-content {
    position: relative;
    flex: 1;
    max-width: 600px;
    padding: 0 var(--container-padding);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--lime);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

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

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.6s ease 0.15s backwards;
    letter-spacing: -0.01em;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: var(--text-secondary);
}

.arrow-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn-secondary:hover .arrow-icon {
    transform: translateX(4px);
}

.hero-features-row {
    display: flex;
    gap: var(--spacing-md);
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.hero-feature:hover {
    border-color: var(--border-light);
    color: var(--text-primary);
}

.hero-feature-icon {
    font-size: var(--font-size-base);
}

.hero-feature-text {
    white-space: nowrap;
}

/* Hero Visual */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 380px;
}

.phone-mockup {
    position: relative;
}

.phone-frame {
    position: relative;
    width: 280px;
    height: 580px;
    background: var(--bg-secondary);
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 0 0 1px rgba(255, 255, 255, 0.1),
        var(--shadow-lg);
    animation: floatPhone 6s ease-in-out infinite;
}

@keyframes floatPhone {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 32px;
    overflow: hidden;
}

.screen-content {
    height: 100%;
    padding: var(--spacing-lg);
}

.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.avatar-circle {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--cyan), var(--purple));
    border-radius: 50%;
}

/* Hero Avatar Evolution Animation */
.hero-avatar-evolution {
    position: relative;
    width: 70px;
    height: 85px;
}

.hero-avatar-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 70px;
    height: 85px;
    object-fit: cover;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-light);
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.8s ease;
}

.hero-avatar-img.level-1 {
    animation: avatarEvolution 9s infinite;
    border-color: var(--border-light);
}

.hero-avatar-img.level-2 {
    animation: avatarEvolution 9s infinite 3s;
    border-color: var(--cyan);
    box-shadow: 0 0 15px var(--cyan-glow);
}

.hero-avatar-img.level-3 {
    animation: avatarEvolution 9s infinite 6s;
    border-color: gold;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.4);
}

@keyframes avatarEvolution {
    0% {
        opacity: 0;
        transform: scale(0.9);
    }
    5% {
        opacity: 1;
        transform: scale(1);
    }
    30% {
        opacity: 1;
        transform: scale(1);
    }
    35% {
        opacity: 0;
        transform: scale(1.05);
    }
    100% {
        opacity: 0;
        transform: scale(0.9);
    }
}

.score-ring {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: conic-gradient(var(--lime) 87%, var(--bg-tertiary) 0);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.score-ring::before {
    content: '';
    position: absolute;
    inset: 6px;
    background: var(--bg-primary);
    border-radius: 50%;
}

.score-value {
    position: relative;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--lime);
}

.preview-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
}

.metric.cyan { border-color: var(--cyan-glow); }
.metric.magenta { border-color: var(--magenta-glow); }
.metric.lime { border-color: var(--lime-glow); }

.metric-icon {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.metric-value {
    font-size: var(--font-size-sm);
    font-weight: 700;
}

.metric-label {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.preview-coach {
    flex: 1;
    display: flex;
    align-items: flex-end;
}

.coach-bubble {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

.coach-bubble p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.phone-glow {
    position: absolute;
    inset: -50px;
    background: radial-gradient(ellipse at center, var(--cyan-glow), transparent 70%);
    opacity: 0.5;
    pointer-events: none;
    z-index: -1;
}

/* Floating Cards */
.floating-cards {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
}

.card-1 {
    top: 15%;
    right: -20px;
    animation: floatCard1 5s ease-in-out infinite;
}

.card-2 {
    top: 45%;
    left: -60px;
    animation: floatCard2 6s ease-in-out infinite;
}

.card-3 {
    bottom: 20%;
    right: -40px;
    animation: floatCard3 5.5s ease-in-out infinite;
}

@keyframes floatCard1 {
    0%, 100% { transform: translateY(0) rotate(2deg); }
    50% { transform: translateY(-10px) rotate(-2deg); }
}

@keyframes floatCard2 {
    0%, 100% { transform: translateY(0) rotate(-3deg); }
    50% { transform: translateY(-15px) rotate(3deg); }
}

@keyframes floatCard3 {
    0%, 100% { transform: translateY(0) rotate(1deg); }
    50% { transform: translateY(-8px) rotate(-1deg); }
}

/* Animation Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   Trust Section
   ========================================== */

.trust-section {
    padding: var(--spacing-3xl) 0;
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
}

.trust-text {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.trust-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

.trust-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.tech-name {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
}

.tech-desc {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ==========================================
   Section Headers
   ========================================== */

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-4xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--cyan);
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

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

/* ==========================================
   Features Section
   ========================================== */

.features {
    padding: var(--spacing-4xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Feature Cards - New Design */
.feature-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    overflow: hidden;
}

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

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    transform: translateY(-4px);
}

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

/* Highlight cards */
.feature-card.feature-highlight {
    grid-column: span 2;
}

.feature-card.cyan-glow {
    border-color: rgba(0, 217, 255, 0.3);
}

.feature-card.cyan-glow::before {
    background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 1;
}

.feature-card.lime-glow {
    border-color: rgba(163, 230, 53, 0.3);
}

.feature-card.lime-glow::before {
    background: linear-gradient(90deg, transparent, var(--lime), transparent);
    opacity: 1;
}

/* Feature Badge */
.feature-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--cyan);
    color: var(--bg-primary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.feature-badge.secondary {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-light);
}

/* Feature Emoji */
.feature-emoji {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

/* Feature Title */
.feature-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

/* Feature Description */
.feature-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Feature Stats Pills */
.feature-stats {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.stat-pill {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--cyan);
}

/* Feature Tags */
.feature-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

/* Feature Avatar Image */
.feature-avatar-img {
    width: 80px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--lime);
    box-shadow: 0 0 20px var(--lime-glow);
}

/* Feature Score Ring */
.feature-score-ring {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-md);
}

.score-ring-svg {
    width: 100%;
    height: 100%;
}

.score-ring-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--lime);
}

/* Wide Feature Card (spans 2 columns) */
.feature-wide {
    grid-column: span 2;
}

/* Full Width Feature Card */
.feature-full-width {
    grid-column: 1 / -1;
}

/* Apple Health Card */
.apple-health-card {
    background: linear-gradient(135deg, rgba(255, 45, 85, 0.1), rgba(255, 45, 85, 0.05));
    border-color: rgba(255, 45, 85, 0.3);
}

.apple-health-card::before {
    background: linear-gradient(90deg, transparent, #FF2D55, transparent);
    opacity: 1;
}

.apple-health-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.apple-health-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.apple-health-logo {
    width: 48px;
    height: 48px;
    color: #FF2D55;
    flex-shrink: 0;
}

.apple-health-text .feature-title {
    margin-bottom: var(--spacing-xs);
}

.apple-health-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.health-tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.tag-icon {
    font-size: var(--font-size-base);
}

/* Keep old styles for backward compatibility */
.feature-large {
    grid-column: span 2;
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-icon.cyan { color: var(--cyan); background: rgba(0, 217, 255, 0.1); }
.feature-icon.magenta { color: var(--magenta); background: rgba(255, 45, 146, 0.1); }
.feature-icon.lime { color: var(--lime); background: rgba(163, 230, 53, 0.1); }
.feature-icon.purple { color: var(--purple); background: rgba(168, 85, 247, 0.1); }
.feature-icon.orange { color: var(--orange); background: rgba(255, 107, 53, 0.1); }

.feature-visual {
    margin-top: var(--spacing-xl);
}

/* Photo Analysis Visual */
.photo-analysis {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
}

.photo-placeholder {
    width: 80px;
    height: 80px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
}

.analysis-arrow {
    font-size: var(--font-size-2xl);
    color: var(--cyan);
}

.analysis-result {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.result-item {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.result-item strong {
    color: var(--text-primary);
}

/* Health Sync Visual */
.health-sync {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.sync-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.sync-icon {
    font-size: var(--font-size-2xl);
}

.sync-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.sync-status {
    font-size: var(--font-size-xs);
    color: var(--lime);
    font-weight: 600;
}

/* ==========================================
   How It Works
   ========================================== */

.how-it-works {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-secondary);
}

/* New Steps Grid Design */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

.step-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.step-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
}

.step-number-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: var(--font-size-sm);
    font-weight: 800;
}

.step-emoji {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.step-avatar-img {
    width: 80px;
    height: 100px;
    object-fit: cover;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--cyan);
    box-shadow: 0 0 20px var(--cyan-glow);
}

.step-card .step-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.step-card .step-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Keep old styles for backward compatibility */
.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.step-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: var(--font-size-2xl);
    font-weight: 800;
    flex-shrink: 0;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

.step-visual {
    flex-shrink: 0;
}

.step-icon-container {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid var(--cyan-glow);
    border-radius: var(--radius-lg);
    color: var(--cyan);
}

.step-icon-container.lime {
    background: rgba(163, 230, 53, 0.1);
    border-color: var(--lime-glow);
    color: var(--lime);
}

.step-icon-container.magenta {
    background: rgba(255, 45, 146, 0.1);
    border-color: var(--magenta-glow);
    color: var(--magenta);
}

.step-icon-container svg {
    width: 36px;
    height: 36px;
}

/* ==========================================
   Avatar Section
   ========================================== */

.avatar-section {
    padding: var(--spacing-4xl) 0;
}

.avatar-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.avatar-text {
    max-width: 500px;
}

.avatar-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.avatar-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.avatar-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-base);
}

.feature-check {
    color: var(--lime);
    font-weight: 700;
}

/* Avatar Visual */
.avatar-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.avatar-showcase {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.avatar-level {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.level-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.level-badge.active {
    background: var(--cyan-glow);
    border-color: var(--cyan);
    color: var(--cyan);
}

.level-badge.legendary {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 107, 53, 0.2));
    border-color: gold;
    color: gold;
}

/* Avatar Images */
.avatar-image-container {
    width: 120px;
    height: 150px;
    background: var(--bg-card);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.avatar-image-container:hover {
    transform: scale(1.05);
}

.avatar-image-container.level-1 {
    border-color: var(--border-light);
}

.avatar-image-container.level-2 {
    width: 140px;
    height: 175px;
    border-color: var(--cyan);
    box-shadow: 0 0 20px var(--cyan-glow);
}

.avatar-image-container.level-3 {
    width: 160px;
    height: 200px;
    border-color: gold;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.4);
}

.avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Keep old placeholder styles for backward compatibility */
.avatar-placeholder {
    width: 100px;
    height: 120px;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.avatar-silhouette {
    width: 50%;
    height: 70%;
    background: var(--gradient-primary);
    border-radius: 50% 50% 40% 40%;
    opacity: 0.5;
}

.avatar-arrow {
    font-size: var(--font-size-2xl);
    color: var(--text-tertiary);
}

/* Unlockables */
.unlockables {
    display: flex;
    gap: var(--spacing-md);
}

.unlockable {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    flex: 1;
}

.unlockable.legendary {
    border-color: gold;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), transparent);
}

.unlock-icon {
    font-size: var(--font-size-2xl);
}

.unlock-img {
    width: 60px;
    height: 60px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.unlock-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.unlock-req {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ==========================================
   Testimonials
   ========================================== */

.testimonials {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-secondary);
}

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

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.testimonial-card:hover {
    border-color: var(--border-light);
    transform: translateY(-4px);
}

.testimonial-card.featured {
    grid-row: span 2;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.05), rgba(255, 45, 146, 0.05));
    border-color: var(--border-light);
}

.testimonial-rating {
    color: gold;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
}

.testimonial-text {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.testimonial-card.featured .testimonial-text {
    font-size: var(--font-size-lg);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.author-detail {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

/* ==========================================
   FAQ Section
   ========================================== */

.faq {
    padding: var(--spacing-4xl) 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

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

.faq-item.active {
    border-color: var(--cyan-glow);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--cyan);
}

.faq-icon {
    width: 20px;
    height: 20px;
    color: var(--text-tertiary);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--cyan);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq-more {
    text-align: center;
    margin-top: var(--spacing-xl);
}

.faq-more-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.faq-more-link:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: var(--bg-card-hover);
}

.faq-more-link svg {
    transition: transform var(--transition-fast);
}

.faq-more-link:hover svg {
    transform: translateX(4px);
}

/* ==========================================
   CTA Section
   ========================================== */

.cta-section {
    padding: var(--spacing-4xl) 0;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1000px;
    height: 400px;
    background: radial-gradient(ellipse at center, var(--magenta-glow), transparent 60%);
    opacity: 0.4;
    pointer-events: none;
}

.cta-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
    position: relative;
}

.cta-content {
    max-width: 500px;
}

.cta-title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-lg);
}

.cta-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.app-store-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.app-store-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.apple-icon-large {
    width: 32px;
    height: 32px;
}

.notify-icon {
    font-size: 28px;
}

.badge-text {
    display: flex;
    flex-direction: column;
}

.badge-small {
    font-size: var(--font-size-xs);
    opacity: 0.8;
}

.badge-large {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.cta-note {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

/* CTA Visual */
.cta-visual {
    display: flex;
    justify-content: center;
}

.cta-phone {
    position: relative;
}

.phone-frame.small {
    width: 200px;
    height: 420px;
    animation: floatPhone 6s ease-in-out infinite;
}

.cta-screen-content {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.cta-avatar-preview {
    width: 100px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50% 50% 40% 40%;
    opacity: 0.7;
}

.cta-avatar-img {
    width: 120px;
    height: 150px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    border: 2px solid var(--cyan);
    box-shadow: 0 0 20px var(--cyan-glow);
}

.cta-score {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--lime);
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.footer-logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.footer-logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

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

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
    color: var(--text-primary);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-heading {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

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

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

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

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

/* ==========================================
   Notification Modal
   ========================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    padding: var(--spacing-lg);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 48px 56px;
    max-width: 540px;
    width: 100%;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    color: var(--text-tertiary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.modal-content,
.modal-success {
    text-align: center;
}

.modal-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-lg);
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.modal-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.modal-form {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.modal-input {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: inherit;
    outline: none;
    transition: all var(--transition-fast);
}

.modal-input::placeholder {
    color: var(--text-tertiary);
}

.modal-input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 3px var(--cyan-glow);
}

.modal-submit {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.modal-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--cyan-glow);
}

.modal-note {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    background: var(--lime);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--bg-primary);
    animation: scaleIn 0.4s ease;
}

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

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 1024px) {
    .hero-visual {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        width: 100%;
        margin-top: var(--spacing-3xl);
    }

    .hero {
        flex-direction: column;
        text-align: center;
    }

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

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

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

    .phone-mockup {
        display: flex;
        justify-content: center;
    }

    .floating-cards {
        display: none;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-large,
    .feature-highlight {
        grid-column: span 2;
    }

    .avatar-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonial-card.featured {
        grid-row: span 1;
        grid-column: span 2;
    }

    .cta-section .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-3xl);
    }

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

    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1.25rem;
    }

    /* ===== HERO MOBILE OPTIMIZATION ===== */
    .hero {
        min-height: auto;
        padding: calc(70px + var(--spacing-xl)) 0 var(--spacing-2xl);
    }

    .hero-badge {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
        margin-bottom: var(--spacing-lg);
    }

    .hero-title {
        font-size: clamp(2.25rem, 10vw, 3rem);
        margin-bottom: var(--spacing-md);
        line-height: 1.15;
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
        line-height: 1.5;
        margin-bottom: var(--spacing-sm);
        padding: 0 var(--spacing-sm);
    }

    .hero-description {
        font-size: var(--font-size-sm);
        line-height: 1.6;
        margin-bottom: var(--spacing-lg);
        padding: 0 var(--spacing-xs);
    }

    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-xl);
        padding: 0 var(--spacing-md);
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
        min-height: 52px;
    }

    .hero-features-row {
        display: none;
    }

    /* ===== NAVIGATION MOBILE ===== */
    .navbar {
        padding: var(--spacing-sm) 0;
    }

    .logo-img {
        width: 32px;
        height: 32px;
    }

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

    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--border-subtle);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    /* ===== SECTIONS MOBILE ===== */
    .section-header {
        margin-bottom: var(--spacing-2xl);
    }

    .section-title {
        font-size: clamp(1.75rem, 7vw, 2.25rem);
        padding: 0 var(--spacing-sm);
    }

    .section-description {
        font-size: var(--font-size-sm);
        padding: 0 var(--spacing-sm);
    }

    /* ===== FEATURES MOBILE ===== */
    .features {
        padding: var(--spacing-2xl) 0;
    }

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

    .feature-card {
        padding: var(--spacing-lg);
    }

    .feature-emoji {
        font-size: 2rem;
    }

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

    .feature-description {
        font-size: var(--font-size-sm);
    }

    .feature-large,
    .feature-highlight,
    .feature-wide {
        grid-column: span 1;
    }

    /* ===== STEPS MOBILE ===== */
    .how-it-works {
        padding: var(--spacing-2xl) 0;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .step-card {
        padding: var(--spacing-lg);
    }

    .step-emoji {
        font-size: 2.5rem;
    }

    .step-avatar-img {
        width: 70px;
        height: 88px;
    }

    .step-card .step-title {
        font-size: var(--font-size-base);
    }

    .step-card .step-description {
        font-size: var(--font-size-sm);
    }

    /* ===== APPLE HEALTH CARD ===== */
    .apple-health-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }

    .apple-health-tags {
        width: 100%;
        justify-content: flex-start;
    }

    .health-sync {
        grid-template-columns: repeat(2, 1fr);
    }

    /* ===== AVATAR SECTION ===== */
    .avatar-section {
        padding: var(--spacing-2xl) 0;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .step-visual {
        order: -1;
    }

    .avatar-showcase {
        flex-direction: column;
    }

    .avatar-arrow {
        transform: rotate(90deg);
    }

    .unlockables {
        flex-direction: column;
    }

    /* ===== TESTIMONIALS MOBILE ===== */
    .testimonials {
        padding: var(--spacing-2xl) 0;
    }

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

    .testimonial-card {
        padding: var(--spacing-lg);
    }

    .testimonial-card.featured {
        grid-column: span 1;
    }

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

    /* ===== FAQ MOBILE ===== */
    .faq {
        padding: var(--spacing-2xl) 0;
    }

    .faq-question {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }

    .faq-answer p {
        font-size: var(--font-size-sm);
        padding: 0 var(--spacing-md) var(--spacing-md);
    }

    /* ===== CTA SECTION MOBILE ===== */
    .cta-section {
        padding: var(--spacing-2xl) 0;
    }

    .cta-title {
        font-size: clamp(1.75rem, 7vw, 2.25rem);
    }

    .cta-description {
        font-size: var(--font-size-sm);
    }

    .app-store-badge {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    /* ===== FOOTER MOBILE ===== */
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }

    .footer-links {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer-column ul {
        gap: var(--spacing-sm);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-features-row {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    /* Modal mobile - full width experience */
    .modal-overlay {
        padding: var(--spacing-md);
    }

    .modal {
        padding: 32px 24px;
        max-width: 100%;
        width: calc(100% - 32px);
        margin: 0 auto;
    }

    .modal-icon {
        font-size: 2.5rem;
        margin-bottom: var(--spacing-sm);
    }

    .modal-title {
        font-size: 1.375rem;
        margin-bottom: var(--spacing-sm);
    }

    .modal-description {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-lg);
        line-height: 1.5;
    }

    .modal-form {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .modal-input {
        padding: 14px 16px;
        font-size: var(--font-size-base);
    }

    .modal-submit {
        width: 100%;
        padding: 14px 20px;
        font-size: var(--font-size-base);
    }

    .modal-note {
        font-size: 0.7rem;
        margin-top: var(--spacing-sm);
    }

    .phone-frame {
        width: 240px;
        height: 500px;
    }

    .phone-frame.small {
        width: 180px;
        height: 380px;
    }

    .photo-analysis {
        flex-direction: column;
    }

    .analysis-arrow {
        transform: rotate(90deg);
    }
}

/* ==========================================
   Animations & Scroll Effects
   ========================================== */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

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

/* Smooth scroll indicator */
@keyframes scrollIndicator {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* ==========================================
   Beta Signup Modal
   ========================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 24px;
    padding: 40px;
    max-width: 440px;
    width: 90%;
    position: relative;
    transform: scale(0.9) translateY(20px);
    transition: transform 0.3s ease;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

.modal-overlay.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.modal-close svg {
    width: 18px;
    height: 18px;
    stroke: var(--text-secondary);
}

.modal-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--cyan), var(--lime));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 28px;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 8px;
}

.modal-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 28px;
    line-height: 1.5;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.modal-input {
    width: 100%;
    padding: 16px 20px;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-subtle);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.modal-input::placeholder {
    color: var(--text-tertiary);
}

.modal-input:focus {
    outline: none;
    border-color: var(--cyan);
    box-shadow: 0 0 0 4px var(--cyan-glow);
}

.modal-submit {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--cyan), var(--lime));
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    color: #0a0a0f;
    cursor: pointer;
    transition: all 0.2s ease;
}

.modal-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--cyan-glow);
}

.modal-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.modal-submit.loading {
    position: relative;
    color: transparent;
}

.modal-submit.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: #0a0a0f;
    border-radius: 50%;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.modal-privacy {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-align: center;
    margin-top: 8px;
}

.modal-privacy a {
    color: var(--cyan);
    text-decoration: none;
}

.modal-success {
    text-align: center;
    padding: 20px 0;
}

.modal-success-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, var(--lime), var(--cyan));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 32px;
}

.modal-success-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-success-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}