/* ============================================
   EarnIt Website - Premium Design System
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --blue: #2563EB;
    --blue-dark: #1D4ED8;
    --blue-light: #3B82F6;
    --green: #10B981;
    --green-dark: #059669;
    --red: #EF4444;
    --orange: #F59E0B;
    --purple: #7C3AED;
    --teal: #06B6D4;

    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;

    --bg: #FAFBFF;
    --card-bg: #FFFFFF;
    --text: #0F172A;
    --text-secondary: #64748B;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.05);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.12), 0 8px 20px rgba(0,0,0,0.06);

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 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: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }

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

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

.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 64px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--blue);
    background: rgba(37, 99, 235, 0.08);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 15px;
    border-radius: var(--radius-md);
    padding: 12px 24px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--blue), var(--blue-dark));
    color: white;
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--text);
    border: 1.5px solid var(--gray-200);
}

.btn-secondary:hover {
    border-color: var(--blue);
    color: var(--blue);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--blue);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: var(--radius-lg);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition);
}

.nav.scrolled {
    padding: 10px 0;
    background: rgba(250, 251, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 22px;
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 18px;
}

.logo-icon-img {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    object-fit: cover;
}

.nav-links {
    display: flex;
    gap: 36px;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
}

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

.nav-cta {
    font-size: 14px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--blue), var(--blue-dark));
    padding: 10px 20px;
    border-radius: var(--radius-md);
    transition: all var(--transition);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(37, 99, 235, 0.4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

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

.hero-gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.3), transparent 70%);
    top: -200px;
    right: -100px;
    animation: float 8s ease-in-out infinite;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.2), transparent 70%);
    bottom: -100px;
    left: -100px;
    animation: float 10s ease-in-out infinite reverse;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15), transparent 70%);
    top: 40%;
    left: 30%;
    animation: float 12s ease-in-out infinite;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 20%, transparent 100%);
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -20px) scale(1.05); }
    66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--blue);
    background: rgba(37, 99, 235, 0.06);
    border: 1px solid rgba(37, 99, 235, 0.12);
    padding: 8px 18px;
    border-radius: 100px;
    margin-bottom: 28px;
    animation: fadeInUp 0.8s ease;
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
    font-size: clamp(42px, 6vw, 72px);
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.hero-subtitle {
    font-size: 19px;
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 500px;
    margin-bottom: 36px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 48px;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stat-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text);
}

.hero-stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-200);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Phone Mockup --- */
.hero-visual {
    display: flex;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s both;
}

.phone-mockup {
    position: relative;
}

.phone-frame {
    width: 280px;
    height: 580px;
    background: var(--gray-900);
    border-radius: 40px;
    padding: 12px;
    position: relative;
    box-shadow:
        0 0 0 2px rgba(255,255,255,0.1),
        0 24px 80px rgba(0,0,0,0.3),
        0 8px 30px rgba(0,0,0,0.15),
        inset 0 0 0 1px rgba(255,255,255,0.05);
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: var(--gray-900);
    border-radius: 0 0 18px 18px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--gray-50);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.phone-glow {
    position: absolute;
    inset: -40px;
    background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.15), transparent 60%);
    z-index: -1;
    animation: glowPulse 4s ease-in-out infinite;
}

.green-glow {
    background: radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.15), transparent 60%);
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

/* --- Screen Content (Dashboard) --- */
.screen-content {
    padding: 48px 16px 16px;
    font-size: 11px;
}

.screen-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.screen-greeting {
    font-size: 16px;
    font-weight: 700;
}

.screen-streak-card {
    background: linear-gradient(135deg, var(--blue), var(--purple));
    border-radius: 16px;
    padding: 18px;
    text-align: center;
    color: white;
    margin-bottom: 12px;
}

.screen-streak-flame {
    font-size: 28px;
    margin-bottom: 2px;
}

.screen-streak-number {
    font-size: 40px;
    font-weight: 900;
    line-height: 1;
}

.screen-streak-label {
    font-size: 12px;
    opacity: 0.85;
    margin-bottom: 10px;
}

.screen-streak-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 11px;
    opacity: 0.8;
}

.screen-status-card {
    background: white;
    border-radius: 12px;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 12px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.screen-status-card.done {
    background: rgba(16, 185, 129, 0.08);
    color: var(--green-dark);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.screen-check {
    width: 22px;
    height: 22px;
    background: var(--green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

.screen-section-title {
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 8px;
}

.screen-apps {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.screen-app {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    background: white;
    border-radius: 10px;
    font-size: 12px;
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.screen-app-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 13px;
}

.screen-app-icon.tiktok { background: #000; }
.screen-app-icon.instagram { background: linear-gradient(135deg, #833AB4, #E1306C, #F77737); }
.screen-app-icon.youtube { background: #FF0000; }

.screen-app-status {
    margin-left: auto;
    font-size: 11px;
    font-weight: 600;
}

.screen-app-status.open {
    color: var(--green);
}

.screen-app-status.lock {
    font-size: 14px;
}

.screen-week {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.screen-day {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    background: var(--gray-100);
    color: var(--gray-400);
}

.screen-day.done {
    background: var(--green);
    color: white;
}

.screen-day.current {
    background: var(--blue);
    color: white;
}

/* --- Hero Scroll Indicator --- */
.hero-scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    animation: fadeInUp 1s ease 1s both;
}

.scroll-arrow {
    width: 24px;
    height: 38px;
    border: 2px solid var(--gray-300);
    border-radius: 12px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    width: 4px;
    height: 8px;
    background: var(--gray-400);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(10px); }
}

/* ============================================
   SOCIAL PROOF
   ============================================ */
.social-proof {
    padding: 48px 0;
    border-bottom: 1px solid var(--gray-100);
}

.social-proof-text {
    text-align: center;
    font-size: 13px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    margin-bottom: 24px;
}

.social-proof-items {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.proof-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-500);
    font-size: 14px;
    font-weight: 500;
}

.proof-item svg {
    color: var(--gray-400);
}

/* ============================================
   FEATURES
   ============================================ */
.features {
    padding: 120px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

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

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

.feature-card-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-card-icon.blue { background: rgba(37, 99, 235, 0.1); color: var(--blue); }
.feature-card-icon.green { background: rgba(16, 185, 129, 0.1); color: var(--green); }
.feature-card-icon.orange { background: rgba(245, 158, 11, 0.1); color: var(--orange); }
.feature-card-icon.purple { background: rgba(124, 58, 237, 0.1); color: var(--purple); }
.feature-card-icon.red { background: rgba(239, 68, 68, 0.1); color: var(--red); }
.feature-card-icon.teal { background: rgba(6, 182, 212, 0.1); color: var(--teal); }

.feature-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.65;
}

/* Feature Visuals */
.feature-visual {
    margin-top: 24px;
}

.lock-demo {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lock-app-row {
    display: flex;
    gap: 10px;
}

.lock-app-pill {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    flex: 1;
    justify-content: center;
}

.lock-app-pill.locked {
    background: rgba(239, 68, 68, 0.08);
    color: var(--red);
    border: 1px solid rgba(239, 68, 68, 0.15);
}

.lock-app-pill.unlocked {
    background: rgba(16, 185, 129, 0.08);
    color: var(--green-dark);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

.feature-mini-visual {
    margin-top: 20px;
}

.streak-display {
    display: flex;
    align-items: baseline;
    gap: 8px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(124, 58, 237, 0.06));
    border-radius: var(--radius-lg);
    padding: 16px 20px;
}

.streak-fire { font-size: 28px; }
.streak-num { font-size: 44px; font-weight: 900; color: var(--blue); letter-spacing: -0.03em; }
.streak-text { font-size: 16px; color: var(--text-secondary); font-weight: 500; }

.stats-grid-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.stat-box {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
}

.stat-val {
    font-size: 24px;
    font-weight: 800;
    color: var(--blue);
    letter-spacing: -0.02em;
}

.stat-lbl {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: 2px;
}

/* ============================================
   HOW IT WORKS
   ============================================ */
.how-it-works {
    padding: 120px 0;
    background: var(--gray-50);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.step {
    text-align: center;
    flex: 1;
    max-width: 320px;
}

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 120px;
    color: var(--gray-300);
    flex-shrink: 0;
}

.step-number {
    font-size: 56px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 20px;
}

.step-visual {
    margin-bottom: 24px;
}

.step-phone {
    width: 180px;
    height: 320px;
    background: var(--gray-900);
    border-radius: 28px;
    padding: 8px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.step-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 22px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Step Lock Screen */
.lock-screen-demo {
    text-align: center;
    padding: 20px;
}

.lock-icon-big {
    font-size: 40px;
    margin-bottom: 12px;
}

.lock-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 4px;
}

.lock-subtitle {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.lock-btn {
    background: var(--blue);
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 8px;
    display: inline-block;
}

/* Step Workout Screen */
.workout-screen-demo {
    text-align: center;
    padding: 20px;
}

.workout-exercise {
    font-size: 18px;
    font-weight: 800;
    margin-bottom: 8px;
}

.workout-reps {
    font-size: 28px;
    font-weight: 900;
    color: var(--blue);
    margin-bottom: 12px;
}

.workout-progress-bar {
    height: 8px;
    background: var(--gray-100);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.workout-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--blue), var(--purple));
    border-radius: 4px;
    transition: width 1s ease;
}

.workout-set-info {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Step Unlock Screen */
.unlock-screen-demo {
    text-align: center;
    padding: 20px;
}

.unlock-check {
    width: 48px;
    height: 48px;
    background: var(--green);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 12px;
}

.unlock-title {
    font-size: 16px;
    font-weight: 800;
    color: var(--green-dark);
    margin-bottom: 10px;
}

.unlock-apps {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 12px;
}

.unlock-apps span {
    font-size: 11px;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    color: var(--green-dark);
    padding: 4px 12px;
    border-radius: 100px;
}

.unlock-timer {
    font-size: 12px;
    color: var(--text-secondary);
}

.step h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.65;
    max-width: 260px;
    margin: 0 auto;
}

/* ============================================
   AI SECTION
   ============================================ */
.ai-section {
    padding: 120px 0;
}

.ai-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.ai-content .section-tag {
    display: inline-block;
}

.ai-content .section-title {
    text-align: left;
}

.ai-description {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 36px;
}

.ai-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.ai-feature {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.ai-feature-icon {
    width: 44px;
    height: 44px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--green);
    flex-shrink: 0;
}

.ai-feature h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 4px;
}

.ai-feature p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* AI Phone */
.ai-visual {
    display: flex;
    justify-content: center;
}

.ai-phone .phone-frame {
    width: 280px;
    height: 580px;
}

.ai-screen {
    background: #1a1a2e !important;
}

.camera-demo {
    width: 100%;
    height: 100%;
    position: relative;
}

.camera-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.camera-overlay {
    position: relative;
    z-index: 1;
    padding: 48px 16px 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.camera-status {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
}

.camera-status.tracking {
    color: var(--green);
}

.camera-exercise {
    font-size: 16px;
    font-weight: 700;
    color: white;
    margin-bottom: 20px;
}

/* Pose Skeleton */
.pose-skeleton {
    position: relative;
    width: 120px;
    height: 180px;
    margin: 0 auto 20px;
}

.pose-joint {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--green);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
    animation: jointPulse 2s ease-in-out infinite;
}

.pose-joint.head { top: 0; left: 50%; transform: translateX(-50%); width: 14px; height: 14px; }
.pose-joint.shoulder-l { top: 30px; left: 15px; }
.pose-joint.shoulder-r { top: 30px; right: 15px; }
.pose-joint.elbow-l { top: 65px; left: 0; }
.pose-joint.elbow-r { top: 65px; right: 0; }
.pose-joint.hip-l { top: 90px; left: 30px; }
.pose-joint.hip-r { top: 90px; right: 30px; }

.pose-bone {
    position: absolute;
    height: 2px;
    background: rgba(16, 185, 129, 0.5);
    transform-origin: left center;
}

.pose-bone.bone-1 { top: 35px; left: 20px; width: 80px; }
.pose-bone.bone-2 { top: 35px; left: 20px; width: 50px; transform: rotate(50deg); }
.pose-bone.bone-3 { top: 35px; right: 20px; width: 50px; transform: rotate(-50deg); transform-origin: right center; }
.pose-bone.bone-4 { top: 35px; left: 25px; width: 60px; transform: rotate(70deg); }
.pose-bone.bone-5 { top: 35px; right: 20px; width: 60px; transform: rotate(-70deg); transform-origin: right center; }

@keyframes jointPulse {
    0%, 100% { box-shadow: 0 0 8px rgba(16, 185, 129, 0.6); }
    50% { box-shadow: 0 0 16px rgba(16, 185, 129, 0.9); }
}

.camera-counter {
    text-align: center;
    margin-top: auto;
}

.counter-number {
    font-size: 56px;
    font-weight: 900;
    color: white;
    line-height: 1;
}

.counter-label {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    font-weight: 500;
}

.camera-form {
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--green);
    margin-top: 12px;
}

.camera-confidence {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    padding: 0 8px;
}

.camera-confidence span {
    font-size: 11px;
    color: rgba(255,255,255,0.5);
    white-space: nowrap;
}

.confidence-bar {
    flex: 1;
    height: 4px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    overflow: hidden;
}

.confidence-fill {
    height: 100%;
    background: var(--green);
    border-radius: 2px;
}

/* ============================================
   FAMILY SECTION
   ============================================ */
.family-section {
    padding: 120px 0;
    background: var(--gray-50);
}

.family-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 32px;
    align-items: start;
}

.family-card {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: 32px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
}

.family-card-header h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

.family-overview {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-100);
}

.family-stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.family-stat-row span { color: var(--text-secondary); }
.family-stat-row strong { font-weight: 700; }

.family-members-demo {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.family-member {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px;
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.member-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 16px;
    flex-shrink: 0;
}

.member-name {
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.member-badge {
    font-size: 10px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 100px;
    background: var(--gray-200);
    color: var(--gray-500);
}

.member-badge.active {
    background: rgba(16, 185, 129, 0.1);
    color: var(--green-dark);
}

.member-stats {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.family-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.family-feature-card {
    background: var(--card-bg);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition);
}

.family-feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.ff-icon {
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.08);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blue);
    margin-bottom: 14px;
}

.family-feature-card h4 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
}

.family-feature-card p {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials {
    padding: 120px 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: var(--card-bg);
    border: 1px solid var(--gray-100);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: all var(--transition);
}

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

.testimonial-card.featured {
    border-color: var(--blue);
    box-shadow: 0 0 0 1px var(--blue), var(--shadow-md);
}

.testimonial-stars {
    color: #FBBF24;
    font-size: 16px;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-card p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 16px;
}

.testimonial-author strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
}

.testimonial-author span {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   PRICING
   ============================================ */
.pricing {
    padding: 120px 0;
    background: var(--gray-50);
}

.pricing-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 48px;
}

.toggle-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-400);
    transition: color var(--transition);
}

.toggle-label.active {
    color: var(--text);
    font-weight: 600;
}

.toggle-switch {
    width: 48px;
    height: 28px;
    background: var(--gray-200);
    border-radius: 14px;
    position: relative;
    transition: background var(--transition);
    padding: 0;
}

.toggle-switch.active {
    background: var(--blue);
}

.toggle-knob {
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    position: absolute;
    top: 3px;
    left: 3px;
    transition: transform var(--transition);
    box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.toggle-switch.active .toggle-knob {
    transform: translateX(20px);
}

.save-badge {
    font-size: 11px;
    font-weight: 700;
    color: var(--green);
    background: rgba(16, 185, 129, 0.1);
    padding: 2px 8px;
    border-radius: 100px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: 36px;
    transition: all var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border-color: var(--blue);
    box-shadow: 0 0 0 1px var(--blue), var(--shadow-lg);
    transform: scale(1.03);
}

.pricing-card.popular:hover {
    transform: scale(1.03) translateY(-4px);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--blue), var(--purple));
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 100px;
    white-space: nowrap;
}

.pricing-card-header {
    margin-bottom: 28px;
}

.pricing-card-header h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-amount {
    font-size: 40px;
    font-weight: 900;
    letter-spacing: -0.03em;
}

.price-period {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    padding: 8px 0;
    border-bottom: 1px solid var(--gray-50);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features .check {
    color: var(--green);
    font-weight: 700;
}

.pricing-features .x {
    color: var(--gray-300);
}

.pricing-features li.disabled {
    color: var(--gray-400);
}

/* ============================================
   DOWNLOAD CTA
   ============================================ */
.download-cta {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}

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

.download-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}

.download-orb.orb-1 {
    width: 500px;
    height: 500px;
    background: rgba(37, 99, 235, 0.08);
    top: -200px;
    left: -100px;
}

.download-orb.orb-2 {
    width: 400px;
    height: 400px;
    background: rgba(124, 58, 237, 0.06);
    bottom: -150px;
    right: -100px;
}

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

.download-title {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 20px;
}

.download-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 20px;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    background: var(--gray-900);
    color: white;
    padding: 14px 28px;
    border-radius: var(--radius-lg);
    transition: all var(--transition);
    box-shadow: var(--shadow-lg);
}

.app-store-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.app-store-btn small {
    display: block;
    font-size: 10px;
    opacity: 0.7;
    font-weight: 400;
}

.app-store-btn strong {
    font-size: 18px;
    font-weight: 700;
}

.download-note {
    font-size: 13px;
    color: var(--gray-400);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 14px;
    margin-top: 16px;
    line-height: 1.7;
    max-width: 280px;
}

.footer-brand .nav-logo {
    color: white;
}

.footer-brand .logo-icon {
    background: linear-gradient(135deg, var(--blue), var(--purple));
}

.footer-links h4 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-400);
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: var(--gray-300);
    font-size: 14px;
    padding: 6px 0;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--gray-500);
}

.footer-social {
    display: flex;
    gap: 16px;
}

.footer-social a {
    color: var(--gray-500);
    transition: color var(--transition);
}

.footer-social a:hover {
    color: white;
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

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

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

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

    .ai-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .ai-content .section-title {
        text-align: center;
    }

    .ai-content {
        text-align: center;
    }

    .ai-feature {
        text-align: left;
    }

    .family-grid {
        grid-template-columns: 1fr;
    }

    .steps {
        flex-direction: column;
        align-items: center;
        gap: 40px;
    }

    .step-connector {
        padding-top: 0;
        transform: rotate(90deg);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--gray-100);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .hero-stat-divider {
        width: 40px;
        height: 1px;
    }

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

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

    .feature-card-large {
        grid-column: span 1;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .pricing-card.popular {
        transform: none;
    }

    .pricing-card.popular:hover {
        transform: translateY(-4px);
    }

    .family-features {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 34px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .btn-lg {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 28px;
    }

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

    .step-phone {
        width: 160px;
        height: 280px;
    }

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