/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary: #ffffff;
    --primary-dim: rgba(255,255,255,0.7);
    --accent: #c8c8c8;
    --accent-glow: rgba(255,255,255,0.15);
    --dark: #050508;
    --dark-card: #0c0c14;
    --dark-surface: #111119;
    --text: #e8e8ee;
    --text-muted: #6b6b80;
    --gradient-1: linear-gradient(135deg, #ffffff 0%, #a0a0b0 100%);
    --gradient-2: linear-gradient(135deg, #a0a0b0 0%, #ffffff 100%);
    --glass: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-hover: rgba(255, 255, 255, 0.08);
    --radius: 20px;
    --radius-sm: 14px;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5 { font-family: 'Playfair Display', Georgia, serif; }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ===== BACKGROUND ===== */
.bg-orbs {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none; z-index: 0; overflow: hidden;
}
.bg-orbs .orb {
    position: absolute; border-radius: 50%;
    filter: blur(100px); opacity: 0.06;
    animation: orbFloat 25s ease-in-out infinite;
}
.bg-orbs .orb:nth-child(1) { width: 700px; height: 700px; background: #fff; top: -15%; left: -10%; }
.bg-orbs .orb:nth-child(2) { width: 500px; height: 500px; background: #888; top: 45%; right: -10%; animation-delay: -8s; }
.bg-orbs .orb:nth-child(3) { width: 400px; height: 400px; background: #fff; bottom: -10%; left: 35%; animation-delay: -16s; }
@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(30px, -40px) scale(1.03); }
    66% { transform: translate(-20px, 20px) scale(0.97); }
}

.grid-overlay {
    position: fixed; top: 0; left: 0;
    width: 100%; height: 100%;
    background-image:
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none; z-index: 0;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px; margin: 0 auto;
    padding: 0 24px; position: relative; z-index: 1;
}

/* ===== NAVBAR ===== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0;
    z-index: 100; padding: 16px 0;
    transition: all 0.4s ease;
}
.navbar.scrolled {
    background: rgba(5, 5, 8, 0.88);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }

.navbar-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.navbar-logo-img {
    height: 108px; width: auto;
    object-fit: contain;
    filter: invert(1);
    opacity: 0.9;
}
.navbar-links { display: flex; align-items: center; gap: 32px; list-style: none; }
.navbar-links a {
    color: var(--text-muted); text-decoration: none;
    font-size: 13px; font-weight: 500; letter-spacing: 0.3px;
    transition: color 0.3s; font-family: 'DM Sans', sans-serif;
}
.navbar-links a:hover { color: #fff; }
.navbar-cta {
    padding: 10px 22px;
    background: #fff; border: none; border-radius: 50px;
    color: #050508; font-weight: 700; font-size: 13px;
    cursor: pointer; transition: all 0.3s;
    text-decoration: none; display: inline-flex;
    align-items: center; gap: 6px;
    font-family: 'DM Sans', sans-serif;
}
.navbar-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,255,255,0.15);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh; display: flex; align-items: center;
    padding: 120px 0 80px; position: relative;
}
.hero-content {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 18px;
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: 50px; font-size: 12px; color: var(--primary-dim);
    font-weight: 500; margin-bottom: 28px;
    backdrop-filter: blur(10px); letter-spacing: 0.3px;
}
.hero-badge .dot {
    width: 7px; height: 7px; background: #fff;
    border-radius: 50%; animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.7); }
}
.hero h1 {
    font-size: clamp(36px, 5vw, 62px);
    font-weight: 700; line-height: 1.08; margin-bottom: 24px;
    letter-spacing: -0.5px;
}
.hero h1 .gradient-text, .gradient-text {
    background: var(--gradient-1);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 17px; color: var(--text-muted);
    line-height: 1.75; margin-bottom: 40px; max-width: 480px;
    font-family: 'DM Sans', sans-serif;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }

.btn-primary {
    padding: 15px 34px; background: #fff;
    border: none; border-radius: 50px;
    color: #050508; font-weight: 700; font-size: 15px;
    cursor: pointer; transition: all 0.3s; text-decoration: none;
    display: inline-flex; align-items: center; gap: 8px;
    font-family: 'DM Sans', sans-serif;
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(255,255,255,0.2);
}
.btn-secondary {
    padding: 15px 34px; background: var(--glass);
    border: 1px solid var(--glass-border); border-radius: 50px;
    color: var(--text); font-weight: 600; font-size: 15px;
    cursor: pointer; transition: all 0.3s; text-decoration: none;
    backdrop-filter: blur(10px); display: inline-flex;
    align-items: center; gap: 8px;
    font-family: 'DM Sans', sans-serif;
}
.btn-secondary:hover {
    background: var(--glass-hover); transform: translateY(-3px);
    border-color: rgba(255,255,255,0.12);
}

/* ===== PHONE MOCKUP ===== */
.hero-phone { display: flex; justify-content: center; perspective: 1200px; }
.phone-wrapper { position: relative; animation: phoneFloat 7s ease-in-out infinite; }
@keyframes phoneFloat {
    0%, 100% { transform: translateY(0) rotateY(-3deg) rotateX(2deg); }
    50% { transform: translateY(-16px) rotateY(3deg) rotateX(-2deg); }
}
.phone-mockup {
    width: 280px; height: 580px;
    background: #0c0c14; border-radius: 44px;
    border: 2px solid rgba(255,255,255,0.08);
    overflow: hidden; position: relative;
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.03),
        0 30px 80px rgba(0,0,0,0.6),
        inset 0 1px 0 rgba(255,255,255,0.05);
}
.phone-notch {
    position: absolute; top: 0; left: 50%;
    transform: translateX(-50%);
    width: 100px; height: 26px;
    background: #050508; border-radius: 0 0 18px 18px; z-index: 5;
}
.phone-screen {
    width: 100%; height: 100%;
    padding: 42px 18px 18px;
    background: linear-gradient(180deg, #080810 0%, #0c0c18 100%);
    display: flex; flex-direction: column;
}
.phone-header { text-align: center; margin-bottom: 16px; }
.phone-header .app-icon {
    width: 44px; height: 44px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 12px; margin: 0 auto 8px;
    display: flex; align-items: center; justify-content: center;
}
.phone-header h3 {
    font-size: 15px; font-weight: 700; color: #fff;
    font-family: 'Playfair Display', serif;
}
.phone-header p { font-size: 10px; color: var(--text-muted); font-family: 'DM Sans', sans-serif; }

.phone-ai-chat {
    flex: 1; display: flex; flex-direction: column;
    gap: 8px; overflow: hidden;
}
.chat-bubble {
    padding: 10px 13px; border-radius: 14px;
    font-size: 10.5px; line-height: 1.5; max-width: 88%;
    animation: bubbleIn 0.5s ease-out forwards; opacity: 0;
    font-family: 'DM Sans', sans-serif;
}
@keyframes bubbleIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.chat-bubble.user {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.08);
    color: #fff; align-self: flex-end;
    border-bottom-right-radius: 4px;
}
.chat-bubble.ai {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.85); align-self: flex-start;
    border-bottom-left-radius: 4px;
}
.chat-bubble.ai .ai-label {
    font-size: 9px; color: rgba(255,255,255,0.5);
    font-weight: 600; margin-bottom: 3px; display: flex;
    align-items: center; gap: 4px;
}
.phone-input {
    display: flex; align-items: center; gap: 8px;
    padding: 10px 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 24px; margin-top: 8px;
}
.phone-input span { font-size: 11px; color: var(--text-muted); flex: 1; font-family: 'DM Sans', sans-serif; }
.phone-input .mic-btn {
    width: 30px; height: 30px; background: #fff;
    border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
}
.phone-glow {
    position: absolute; width: 250px; height: 250px;
    background: rgba(255,255,255,0.08); border-radius: 50%;
    filter: blur(100px); top: 50%; left: 50%;
    transform: translate(-50%, -50%); z-index: -1;
}

/* ===== STATS ===== */
.stats-bar {
    padding: 60px 0;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item h3 {
    font-size: 40px; font-weight: 700;
    color: #fff; margin-bottom: 6px;
    font-family: 'Playfair Display', serif;
}
.stat-item p {
    font-size: 13px; color: var(--text-muted); font-weight: 500;
    font-family: 'DM Sans', sans-serif;
}

/* ===== SECTIONS ===== */
section { padding: 100px 0; position: relative; z-index: 1; }
.section-label {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 50px; font-size: 11px; color: rgba(255,255,255,0.5);
    font-weight: 600; text-transform: uppercase; letter-spacing: 1.5px;
    margin-bottom: 16px; font-family: 'DM Sans', sans-serif;
}
.section-label svg { opacity: 0.5; }
.section-title {
    font-size: clamp(28px, 4vw, 50px);
    font-weight: 700; line-height: 1.15; margin-bottom: 16px;
    letter-spacing: -0.3px;
}
.section-desc {
    font-size: 16px; color: var(--text-muted);
    max-width: 580px; line-height: 1.75;
    font-family: 'DM Sans', sans-serif;
}

/* ===== MODELS ===== */
.models-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 56px; }
.model-card {
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: var(--radius); padding: 40px;
    backdrop-filter: blur(20px); transition: all 0.4s ease;
    position: relative; overflow: hidden;
}
.model-card::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--gradient-1); opacity: 0; transition: opacity 0.4s;
}
.model-card:hover::before { opacity: 1; }
.model-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255,255,255,0.1);
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.model-card.featured {
    border-color: rgba(255,255,255,0.1);
    background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
}
.model-card.featured::before { opacity: 1; }
.model-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 12px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 50px; font-size: 11px; color: rgba(255,255,255,0.6);
    font-weight: 600; margin-bottom: 20px;
    font-family: 'DM Sans', sans-serif;
}
.model-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
.model-card p {
    color: var(--text-muted); font-size: 14px; line-height: 1.7;
    margin-bottom: 24px; font-family: 'DM Sans', sans-serif;
}
.model-features { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.model-features li {
    display: flex; align-items: center; gap: 10px;
    font-size: 13.5px; color: rgba(255,255,255,0.8);
    font-family: 'DM Sans', sans-serif;
}
.model-features li .check {
    width: 20px; height: 20px;
    background: rgba(255,255,255,0.06);
    border-radius: 50%; display: flex;
    align-items: center; justify-content: center; flex-shrink: 0;
}
.model-features li .check svg { width: 11px; height: 11px; stroke: rgba(255,255,255,0.6); }

/* ===== AI EXPERIENCE ===== */
.ai-experience-content {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center; margin-top: 56px;
}
.ai-demo-phone { display: flex; justify-content: center; }
.ai-demo-mockup {
    width: 300px; height: 620px;
    background: #0c0c14; border-radius: 44px;
    border: 2px solid rgba(255,255,255,0.08);
    overflow: hidden; position: relative;
    box-shadow: 0 30px 80px rgba(0,0,0,0.5), inset 0 1px 0 rgba(255,255,255,0.05);
}
.ai-demo-screen {
    width: 100%; height: 100%;
    background: linear-gradient(180deg, #080810 0%, #0c0c18 100%);
    padding: 42px 14px 14px; display: flex; flex-direction: column;
}
.ai-video-area {
    width: 100%; aspect-ratio: 1;
    background: radial-gradient(circle at center, rgba(255,255,255,0.04) 0%, transparent 70%);
    border-radius: 20px; border: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    margin-bottom: 14px; position: relative;
}
.ai-avatar {
    width: 72px; height: 72px; border-radius: 50%;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 12px; position: relative;
}
.ai-avatar::after {
    content: ''; position: absolute; inset: -5px;
    border-radius: 50%; border: 1.5px solid rgba(255,255,255,0.2);
    animation: avatarPulse 2.5s ease-in-out infinite;
}
@keyframes avatarPulse {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.2); opacity: 0; }
}
.ai-video-label {
    font-size: 12px; color: rgba(255,255,255,0.6);
    font-weight: 600; font-family: 'DM Sans', sans-serif;
}
.ai-video-sublabel {
    font-size: 10px; color: var(--text-muted); margin-top: 3px;
    font-family: 'DM Sans', sans-serif;
}
.ai-wave-bars { display: flex; gap: 3px; align-items: center; margin-top: 14px; }
.ai-wave-bars span {
    width: 3px; background: rgba(255,255,255,0.4);
    border-radius: 2px; animation: waveBar 1.2s ease-in-out infinite;
}
.ai-wave-bars span:nth-child(1) { height: 12px; animation-delay: 0s; }
.ai-wave-bars span:nth-child(2) { height: 20px; animation-delay: 0.1s; }
.ai-wave-bars span:nth-child(3) { height: 16px; animation-delay: 0.2s; }
.ai-wave-bars span:nth-child(4) { height: 24px; animation-delay: 0.3s; }
.ai-wave-bars span:nth-child(5) { height: 18px; animation-delay: 0.4s; }
.ai-wave-bars span:nth-child(6) { height: 14px; animation-delay: 0.5s; }
.ai-wave-bars span:nth-child(7) { height: 22px; animation-delay: 0.6s; }
@keyframes waveBar {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.3); }
}
.ai-controls { display: flex; justify-content: center; gap: 14px; margin-top: auto; padding: 10px 0; }
.ai-control-btn {
    width: 46px; height: 46px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    border: 1px solid rgba(255,255,255,0.08);
    background: rgba(255,255,255,0.04);
}
.ai-control-btn.end-call { background: #dc3545; border-color: #dc3545; }
.ai-control-btn.active-mic { background: #fff; border: none; }

.ai-features-list { display: flex; flex-direction: column; gap: 20px; }
.ai-feature-item {
    display: flex; gap: 16px; padding: 22px;
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm); backdrop-filter: blur(10px);
    transition: all 0.3s;
}
.ai-feature-item:hover {
    border-color: rgba(255,255,255,0.1);
    transform: translateX(6px);
    background: var(--glass-hover);
}
.ai-feature-icon {
    width: 46px; height: 46px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px; display: flex;
    align-items: center; justify-content: center; flex-shrink: 0;
}
.ai-feature-icon svg { stroke: rgba(255,255,255,0.5); }
.ai-feature-item h4 {
    font-size: 15px; font-weight: 700; margin-bottom: 4px;
    font-family: 'DM Sans', sans-serif; font-weight: 700;
}
.ai-feature-item p {
    font-size: 13px; color: var(--text-muted); line-height: 1.6;
    font-family: 'DM Sans', sans-serif;
}

/* ===== FEATURES GRID ===== */
.features-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 20px; margin-top: 56px;
}
.feature-card {
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: var(--radius); padding: 32px;
    backdrop-filter: blur(20px); transition: all 0.4s ease;
    position: relative; overflow: hidden;
}
.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255,255,255,0.1);
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}
.feature-card .icon-box {
    width: 52px; height: 52px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 14px; display: flex;
    align-items: center; justify-content: center; margin-bottom: 20px;
}
.feature-card .icon-box svg { stroke: rgba(255,255,255,0.5); }
.feature-card h3 {
    font-size: 17px; font-weight: 700; margin-bottom: 8px;
    font-family: 'DM Sans', sans-serif;
}
.feature-card p {
    font-size: 13.5px; color: var(--text-muted); line-height: 1.7;
    font-family: 'DM Sans', sans-serif;
}
.feature-card .tag {
    display: inline-block; margin-top: 16px;
    padding: 4px 10px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 50px; font-size: 10px;
    color: rgba(255,255,255,0.4); font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px;
    font-family: 'DM Sans', sans-serif;
}
.feature-card.span-2 { grid-column: span 2; }

/* ===== APP PREVIEW ===== */
.app-preview-header { text-align: center; margin-bottom: 56px; }
.app-preview-header .section-desc { margin: 0 auto; }
.app-screens-scroll { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; }

.app-screen-card {
    width: 240px; flex-shrink: 0;
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: 22px; overflow: hidden; transition: all 0.4s;
}
.app-screen-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 24px 60px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.12);
}
.app-screen-visual { width: 100%; aspect-ratio: 9/16; position: relative; overflow: hidden; }

/* Screen: Onboarding */
.screen-onboarding {
    background: linear-gradient(180deg, #080810 0%, #0c0c18 100%);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; padding: 30px 20px;
}
.screen-onboarding h4 {
    font-size: 17px; font-weight: 700; color: #fff;
    margin-bottom: 8px; text-align: center;
    font-family: 'Playfair Display', serif;
}
.screen-onboarding p {
    font-size: 11px; color: var(--text-muted);
    text-align: center; line-height: 1.5; margin-bottom: 24px;
    font-family: 'DM Sans', sans-serif;
}
.screen-onboarding .onboard-dots { display: flex; gap: 6px; }
.screen-onboarding .onboard-dots span {
    width: 8px; height: 8px; border-radius: 50%;
    background: rgba(255,255,255,0.15);
}
.screen-onboarding .onboard-dots span.active {
    width: 24px; border-radius: 4px; background: #fff;
}
.screen-onboarding .onboard-btn {
    margin-top: 20px; padding: 12px 40px;
    background: #fff; border-radius: 50px;
    color: #050508; font-weight: 700; font-size: 13px;
    font-family: 'DM Sans', sans-serif;
}

/* Screen: Smile */
.screen-smile {
    background: linear-gradient(180deg, #080810 0%, #0c0c18 100%);
    display: flex; flex-direction: column; padding: 30px 14px 14px;
}
.screen-smile .smile-header { text-align: center; margin-bottom: 14px; }
.screen-smile .smile-header h4 {
    font-size: 14px; color: #fff; font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    display: flex; align-items: center; justify-content: center; gap: 4px;
}
.screen-smile .smile-preview {
    flex: 1;
    background: rgba(255,255,255,0.02);
    border-radius: 16px; border: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; gap: 10px;
}
.screen-smile .smile-preview .ai-analyzing {
    font-size: 11px; color: rgba(255,255,255,0.4);
    font-weight: 600; font-family: 'DM Sans', sans-serif;
    display: flex; align-items: center;
}
.screen-smile .smile-slider { margin-top: 12px; padding: 12px; }
.screen-smile .slider-track {
    width: 100%; height: 3px;
    background: rgba(255,255,255,0.08);
    border-radius: 2px; position: relative;
}
.screen-smile .slider-fill {
    width: 65%; height: 100%;
    background: #fff; border-radius: 2px;
}
.screen-smile .slider-thumb {
    width: 14px; height: 14px; background: #fff;
    border-radius: 50%; position: absolute;
    top: 50%; left: 65%; transform: translate(-50%, -50%);
    box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.screen-smile .slider-labels {
    display: flex; justify-content: space-between; margin-top: 8px;
}
.screen-smile .slider-labels span {
    font-size: 10px; color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}

/* Screen: Whitening */
.screen-whitening {
    background: linear-gradient(180deg, #080810 0%, #0c0c18 100%);
    display: flex; flex-direction: column;
    align-items: center; padding: 30px 14px 14px;
}
.screen-whitening h4 {
    font-size: 14px; color: #fff; font-weight: 600;
    margin-bottom: 14px; font-family: 'DM Sans', sans-serif;
    display: flex; align-items: center;
}
.whitening-compare {
    width: 100%; flex: 1;
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 8px; margin-bottom: 12px;
}
.whitening-side {
    background: rgba(255,255,255,0.02);
    border-radius: 12px; border: 1px solid rgba(255,255,255,0.06);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center; padding: 16px 8px;
}
.whitening-side.before svg { opacity: 0.4; }
.whitening-side span {
    font-size: 10px; color: var(--text-muted); font-weight: 600;
    text-transform: uppercase; letter-spacing: 1px; margin-top: 8px;
    font-family: 'DM Sans', sans-serif;
}
.whitening-result {
    padding: 10px; background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 10px; text-align: center; width: 100%;
}
.whitening-result span {
    font-size: 11px; color: rgba(255,255,255,0.5);
    font-weight: 600; font-family: 'DM Sans', sans-serif;
    display: inline-flex; align-items: center;
}

/* Screen: Appointment */
.screen-appointment {
    background: linear-gradient(180deg, #080810 0%, #0c0c18 100%);
    display: flex; flex-direction: column; padding: 30px 14px 14px;
}
.screen-appointment h4 {
    font-size: 14px; color: #fff; font-weight: 600;
    text-align: center; margin-bottom: 14px;
    font-family: 'DM Sans', sans-serif;
    display: flex; align-items: center; justify-content: center;
}
.appointment-calendar {
    background: rgba(255,255,255,0.02);
    border-radius: 12px; border: 1px solid rgba(255,255,255,0.06);
    padding: 12px; margin-bottom: 12px;
}
.cal-header {
    display: flex; justify-content: space-between;
    align-items: center; margin-bottom: 10px;
}
.cal-header span {
    font-size: 12px; color: #fff; font-weight: 600;
    font-family: 'DM Sans', sans-serif;
}
.cal-header .arrows {
    display: flex; gap: 8px; color: var(--text-muted); font-size: 14px;
}
.cal-days {
    display: grid; grid-template-columns: repeat(7, 1fr);
    gap: 3px; text-align: center;
}
.cal-days span {
    font-size: 10px; padding: 5px 0;
    color: rgba(255,255,255,0.3); border-radius: 6px;
    font-family: 'DM Sans', sans-serif;
}
.cal-days span.day-label {
    font-weight: 600; color: var(--text-muted); font-size: 9px;
}
.cal-days span.today {
    background: #fff; color: #050508; font-weight: 700;
}
.cal-days span.available {
    background: rgba(255,255,255,0.06); color: rgba(255,255,255,0.6);
}
.time-slots { display: flex; flex-wrap: wrap; gap: 6px; }
.time-slot {
    padding: 6px 12px;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px; font-size: 11px;
    color: rgba(255,255,255,0.5);
    font-family: 'DM Sans', sans-serif;
}
.time-slot.selected {
    background: rgba(255,255,255,0.08);
    border-color: rgba(255,255,255,0.15);
    color: #fff; font-weight: 600;
}
.book-btn {
    margin-top: auto; padding: 12px;
    background: #fff; border-radius: 12px;
    text-align: center; color: #050508;
    font-weight: 700; font-size: 12px;
    font-family: 'DM Sans', sans-serif;
    display: flex; align-items: center; justify-content: center;
}

.app-screen-info { padding: 14px 18px; }
.app-screen-info h4 {
    font-size: 13px; font-weight: 700; margin-bottom: 3px;
    font-family: 'DM Sans', sans-serif;
}
.app-screen-info p {
    font-size: 11px; color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}

/* ===== REVENUE ===== */
.revenue-content {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 48px; align-items: center; margin-top: 56px;
}
.revenue-chart {
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: var(--radius); padding: 32px;
    backdrop-filter: blur(20px);
}
.chart-header {
    display: flex; justify-content: space-between;
    align-items: center; margin-bottom: 24px;
}
.chart-header h4 {
    font-size: 15px; font-weight: 700;
    font-family: 'DM Sans', sans-serif;
}
.chart-header .chart-badge {
    padding: 4px 10px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 50px; font-size: 11px;
    color: rgba(255,255,255,0.5); font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    display: inline-flex; align-items: center;
}
.chart-bars {
    display: flex; align-items: flex-end;
    gap: 12px; height: 200px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--glass-border);
}
.chart-bar-group {
    flex: 1; display: flex; flex-direction: column;
    align-items: center; gap: 8px; height: 100%;
    justify-content: flex-end;
}
.chart-bar {
    width: 100%; border-radius: 4px 4px 0 0;
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.chart-bar.primary {
    background: linear-gradient(180deg, rgba(255,255,255,0.6) 0%, rgba(255,255,255,0.15) 100%);
}
.chart-bar-label {
    font-size: 10px; color: var(--text-muted); font-weight: 500;
    font-family: 'DM Sans', sans-serif;
}
.chart-legend { display: flex; gap: 24px; margin-top: 16px; }
.chart-legend-item {
    display: flex; align-items: center; gap: 6px;
    font-size: 11px; color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}
.chart-legend-dot { width: 10px; height: 10px; border-radius: 3px; }

.revenue-cards { display: flex; flex-direction: column; gap: 14px; }
.revenue-card {
    padding: 22px; background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm); backdrop-filter: blur(10px);
    display: flex; align-items: center; gap: 16px;
    transition: all 0.3s;
}
.revenue-card:hover {
    border-color: rgba(255,255,255,0.1);
    transform: translateX(6px);
    background: var(--glass-hover);
}
.revenue-card .rev-icon {
    width: 46px; height: 46px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px; display: flex;
    align-items: center; justify-content: center; flex-shrink: 0;
}
.revenue-card .rev-icon svg { stroke: rgba(255,255,255,0.4); }
.revenue-card h4 {
    font-size: 14px; font-weight: 700; margin-bottom: 3px;
    font-family: 'DM Sans', sans-serif;
}
.revenue-card p {
    font-size: 12.5px; color: var(--text-muted); line-height: 1.5;
    font-family: 'DM Sans', sans-serif;
}

/* ===== TECH ===== */
.tech-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 16px; margin-top: 56px;
}
.tech-card {
    background: var(--glass); border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm); padding: 28px;
    text-align: center; backdrop-filter: blur(10px);
    transition: all 0.3s;
}
.tech-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255,255,255,0.1);
}
.tech-card .tech-icon { margin-bottom: 12px; }
.tech-card .tech-icon svg { stroke: rgba(255,255,255,0.35); }
.tech-card h4 {
    font-size: 13px; font-weight: 700; margin-bottom: 4px;
    font-family: 'DM Sans', sans-serif;
}
.tech-card p {
    font-size: 11px; color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}

/* ===== CTA ===== */
.cta-section { padding: 100px 0; }
.cta-card {
    background: linear-gradient(135deg, rgba(255,255,255,0.04) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 28px; padding: 80px 60px;
    text-align: center; position: relative; overflow: hidden;
}
.cta-card::before {
    content: ''; position: absolute;
    top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle at center, rgba(255,255,255,0.02) 0%, transparent 50%);
    animation: ctaGlow 10s ease-in-out infinite;
}
@keyframes ctaGlow {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(3%, 3%); }
}
.cta-card > * { position: relative; z-index: 1; }
.cta-card h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 700; margin-bottom: 16px;
}
.cta-card p {
    font-size: 16px; color: var(--text-muted);
    max-width: 560px; margin: 0 auto 36px; line-height: 1.7;
    font-family: 'DM Sans', sans-serif;
}
.cta-buttons { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer {
    padding: 36px 0;
    border-top: 1px solid var(--glass-border);
    position: relative; z-index: 1;
}
.footer-content {
    display: flex; justify-content: space-between; align-items: center;
}
.footer-brand {
    display: flex; align-items: center; gap: 12px;
}
.footer-brand span {
    font-size: 13px; color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}
.footer-agency {
    display: flex; align-items: center; gap: 6px;
    font-size: 12px; color: var(--text-muted);
    font-family: 'DM Sans', sans-serif;
}
.footer-agency .lumosoo { color: rgba(255,255,255,0.6); font-weight: 600; }

/* ===== SCROLL REVEAL ===== */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: all 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== LUMOSOO BADGE ===== */
.lumosoo-badge {
    position: fixed; bottom: 20px; right: 20px;
    padding: 8px 16px;
    background: rgba(5, 5, 8, 0.92);
    border: 1px solid var(--glass-border);
    border-radius: 50px; backdrop-filter: blur(10px);
    font-size: 11px; color: var(--text-muted); z-index: 99;
    display: flex; align-items: center; gap: 6px;
    font-family: 'DM Sans', sans-serif;
}
.lumosoo-badge .lum-dot {
    width: 6px; height: 6px;
    background: rgba(255,255,255,0.4); border-radius: 50%;
}
.lumosoo-badge strong { color: rgba(255,255,255,0.6); }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark); }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.08); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.15); }

/* ===== PROMO SECTION (GREEN) ===== */
.section-label-green {
    background: rgba(200, 230, 0, 0.08) !important;
    border-color: rgba(200, 230, 0, 0.15) !important;
    color: #C8E600 !important;
}
.section-label-green svg { stroke: #C8E600 !important; opacity: 0.7 !important; }
.gradient-text-green {
    background: linear-gradient(135deg, #C8E600 0%, #9BBF00 50%, #C8E600 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

.promo-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 24px; margin-top: 56px;
}
.promo-card {
    background: linear-gradient(135deg, rgba(200, 230, 0, 0.06) 0%, rgba(200, 230, 0, 0.02) 100%);
    border: 1px solid rgba(200, 230, 0, 0.12);
    border-radius: var(--radius); padding: 40px;
    backdrop-filter: blur(20px); transition: all 0.4s ease;
    position: relative; overflow: hidden;
    display: flex; flex-direction: column;
}
.promo-card::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 100%; height: 2px;
    background: linear-gradient(90deg, #C8E600, #9BBF00);
}
.promo-card::after {
    content: ''; position: absolute;
    top: -80px; right: -80px;
    width: 200px; height: 200px;
    background: radial-gradient(circle, rgba(200, 230, 0, 0.06) 0%, transparent 70%);
    pointer-events: none;
}
.promo-card:hover {
    transform: translateY(-6px);
    border-color: rgba(200, 230, 0, 0.25);
    box-shadow: 0 20px 60px rgba(200, 230, 0, 0.08);
}
.promo-icon-row {
    display: flex; gap: 12px; margin-bottom: 20px;
}
.promo-store-icon {
    width: 56px; height: 56px;
    background: rgba(200, 230, 0, 0.08);
    border: 1px solid rgba(200, 230, 0, 0.12);
    border-radius: 14px; display: flex;
    align-items: center; justify-content: center;
    color: #C8E600;
}
.promo-store-icon svg { stroke: #C8E600; }
.promo-store-icon.promo-icon-large {
    width: 64px; height: 64px; border-radius: 16px;
}
.promo-badge {
    display: inline-block; width: fit-content;
    padding: 4px 14px; margin-bottom: 16px;
    background: linear-gradient(135deg, #C8E600, #9BBF00);
    border-radius: 50px; font-size: 11px;
    color: #050508; font-weight: 800;
    letter-spacing: 1.5px;
    font-family: 'DM Sans', sans-serif;
}
.promo-card h3 {
    font-size: 22px; font-weight: 700;
    margin-bottom: 12px; color: #fff;
    font-family: 'Playfair Display', serif;
    line-height: 1.3;
}
.promo-card p {
    font-size: 14px; color: var(--text-muted);
    line-height: 1.7; margin-bottom: 24px;
    font-family: 'DM Sans', sans-serif;
    flex: 1;
}
.promo-value {
    display: flex; align-items: baseline; gap: 10px;
    padding-top: 20px;
    border-top: 1px solid rgba(200, 230, 0, 0.1);
}
.promo-value-label {
    font-size: 12px; color: var(--text-muted);
    font-weight: 500; text-transform: uppercase;
    letter-spacing: 1px;
    font-family: 'DM Sans', sans-serif;
}
.promo-value-amount {
    font-size: 28px; font-weight: 800;
    color: #C8E600;
    font-family: 'DM Sans', sans-serif;
    text-decoration: line-through;
    text-decoration-color: rgba(200, 230, 0, 0.4);
    text-decoration-thickness: 2px;
}

/* ===== COLLAB SECTION ===== */
.collab-section { padding: 80px 0; }
.collab-card {
    background: linear-gradient(135deg, rgba(200, 230, 0, 0.04) 0%, rgba(255,255,255,0.02) 50%, rgba(200, 230, 0, 0.04) 100%);
    border: 1px solid rgba(200, 230, 0, 0.1);
    border-radius: 28px; padding: 60px;
    position: relative; overflow: hidden;
}
.collab-card::before {
    content: ''; position: absolute;
    top: -100px; left: 50%; transform: translateX(-50%);
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(200, 230, 0, 0.04) 0%, transparent 60%);
    pointer-events: none;
}
.collab-inner {
    position: relative; z-index: 1;
    display: flex; flex-direction: column;
    align-items: center; text-align: center;
}
.collab-logos {
    display: flex; align-items: center;
    gap: 32px; margin-bottom: 40px;
}
.collab-logo-item {
    display: flex; align-items: center; justify-content: center;
}
.collab-lumosoo-logo { display: flex; align-items: center; }
.collab-biosmile-logo {
    height: 150px; width: auto;
    object-fit: contain; filter: invert(1);
    opacity: 0.9;
}
.collab-x {
    width: 48px; height: 48px;
    background: rgba(200, 230, 0, 0.08);
    border: 1px solid rgba(200, 230, 0, 0.15);
    border-radius: 50%; display: flex;
    align-items: center; justify-content: center;
    flex-shrink: 0;
}
.collab-x svg { stroke: #C8E600; opacity: 0.7; }
.collab-text h3 {
    font-size: 28px; font-weight: 700;
    margin-bottom: 12px; color: #fff;
    font-family: 'Playfair Display', serif;
}
.collab-text p {
    font-size: 16px; color: var(--text-muted);
    line-height: 1.7; max-width: 600px;
    margin: 0 auto;
    font-family: 'DM Sans', sans-serif;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero-content { grid-template-columns: 1fr; text-align: center; }
    .hero-desc { margin: 0 auto 36px; }
    .hero-buttons { justify-content: center; }
    .hero-phone { margin-top: 40px; }
    .models-grid { grid-template-columns: 1fr; }
    .ai-experience-content { grid-template-columns: 1fr; }
    .ai-demo-phone { order: -1; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .feature-card.span-2 { grid-column: span 1; }
    .revenue-content { grid-template-columns: 1fr; }
    .tech-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .promo-grid { grid-template-columns: 1fr; }
    .collab-card { padding: 40px 24px; }
    .collab-logos { gap: 20px; }
    .collab-lumosoo-logo svg { width: 140px; height: auto; }
    .collab-biosmile-logo { height: 114px; }
}
@media (max-width: 640px) {
    .navbar-links { display: none; }
    .features-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .tech-grid { grid-template-columns: 1fr 1fr; }
    .cta-card { padding: 40px 24px; }
    .footer-content { flex-direction: column; gap: 16px; }
    .app-screens-scroll { flex-direction: column; align-items: center; }
    .collab-logos { flex-direction: column; gap: 16px; }
    .collab-lumosoo-logo svg { width: 120px; height: auto; }
    .collab-biosmile-logo { height: 96px; }
    .collab-text h3 { font-size: 22px; }
}