/* ===== VARIABLES ===== */
:root {
    /* Primary Colors - Orange & Blue */
    --primary-orange: #ff6b35;
    --primary-orange-light: #ff8960;
    --primary-orange-dark: #e55a2b;
    --primary-blue: #2563eb;
    --primary-blue-light: #3b82f6;
    --primary-blue-dark: #1d4ed8;
    
    /* Secondary Colors */
    --secondary-blue: #1e40af;
    --accent-blue: #60a5fa;
    --accent-orange: #fdba74;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-blue) 100%);
    --gradient-orange: linear-gradient(135deg, var(--primary-orange-light) 0%, var(--primary-orange-dark) 100%);
    --gradient-blue: linear-gradient(135deg, var(--primary-blue-light) 0%, var(--primary-blue-dark) 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Typography */
    --font-family: 'Inter', system-ui, -apple-system, 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: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

button {
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-normal);
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-header p {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-orange);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

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

/* ===== BUTTONS ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--gradient-orange);
    color: var(--white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: var(--font-size-base);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-normal);
}

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

.btn-primary.large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: transparent;
    color: var(--primary-blue);
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid var(--primary-blue);
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: var(--transition-normal);
}

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

.cta-button {
    background: var(--gradient-orange);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: var(--font-size-sm);
    transition: var(--transition-normal);
}

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

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--gray-900);
}

.nav-logo i {
    font-size: var(--font-size-2xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-links a {
    font-weight: 500;
    color: var(--gray-700);
    transition: var(--transition-normal);
}

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

.mobile-menu-toggle {
    display: none;
    font-size: var(--font-size-xl);
    color: var(--gray-700);
    cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #f8faff 0%, #fff5f0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="%23e5e7eb" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)" opacity="0.3"/></svg>');
    z-index: 0;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-stats {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    border-left: 4px solid var(--primary-orange);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.stat-text {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

/* ===== HERO VISUAL ===== */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease-out;
    position: relative;
}

.hero-mockup {
    position: relative;
    width: 500px;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Phone Mockup */
.device-mockup {
    position: relative;
    z-index: 10;
}

.phone-mockup {
    width: 280px;
    height: 560px;
}

.device-frame {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 35px;
    padding: 8px;
    box-shadow: 
        0 20px 40px rgba(0,0,0,0.3),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

.device-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 27px;
    overflow: hidden;
    position: relative;
}

/* App Interface */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-blue));
    color: var(--white);
}

.app-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.app-logo i {
    font-size: var(--font-size-base);
}

.live-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    background: rgba(255,255,255,0.2);
    padding: 4px 8px;
    border-radius: 12px;
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

/* Camera View */
.camera-view {
    height: calc(100% - 60px);
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* AI Pose Detection Container */
.ai-pose-container {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.ai-pose-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--primary-blue);
}

/* AI Detection Overlay */
.ai-detection-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--radius-xl);
    pointer-events: none;
}

.detection-badge {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    background: rgba(37, 99, 235, 0.9);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    backdrop-filter: blur(10px);
    animation: pulse 2s ease-in-out infinite;
}

.tech-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: rgba(255, 107, 53, 0.9);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    backdrop-filter: blur(10px);
}

.scanning-effect {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(255, 107, 53, 0.3) 50%,
        transparent 100%
    );
    animation: scan 3s ease-in-out infinite;
    border-radius: var(--radius-xl);
}

/* Analysis Points */
.analysis-point {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary-orange);
    border: 2px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.4);
    animation: pointPulse 2s ease-in-out infinite;
    z-index: 10;
}

/* Head point - center of head */
.point-head { 
    top: 18px; 
    left: 50%; 
    transform: translateX(-50%);
}

/* Neck point - center of neck */
.point-neck { 
    top: 10px; 
    left: 50%; 
    transform: translateX(-50%);
}

/* Shoulder points - on shoulder caps */
.point-shoulder-left { 
    top: 12px; 
    left: 20%;
}

.point-shoulder-right { 
    top: 12px; 
    right: 20%;
}

/* Chest point - upper torso */
.point-chest { 
    top: 25px; 
    left: 50%; 
    transform: translateX(-50%);
}

/* Spine points - along the spine */
.point-spine-upper { 
    top: 40px; 
    left: 50%; 
    transform: translateX(-50%);
}

.point-spine-mid { 
    top: 55px; 
    left: 50%; 
    transform: translateX(-50%);
}

.point-spine-lower { 
    top: 25px; 
    left: 50%; 
    transform: translateX(-50%);
}

/* Posture Analysis Lines */
.posture-analysis {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

/* Central spine alignment line */
.spine-line {
    position: absolute;
    left: 50%;
    top: 20px;
    width: 2px;
    height: 180px;
    transform: translateX(-50%);
    background: linear-gradient(to bottom, 
        var(--primary-orange) 0%, 
        var(--primary-orange) 50%, 
        rgba(255, 107, 53, 0.5) 100%);
    border-radius: 1px;
    opacity: 0.8;
}

/* Shoulder alignment line */
.shoulder-alignment {
    position: absolute;
    top: 57px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: var(--primary-blue);
    border-radius: 1px;
    opacity: 0.7;
}

/* Analysis grid for reference */
.posture-grid {
    position: absolute;
    top: 0;
    left: -30px;
    right: -30px;
    height: 100%;
    opacity: 0.2;
}

.grid-horizontal {
    position: absolute;
    width: 100%;
    height: 1px;
    background: var(--gray-400);
    left: 0;
}

.grid-horizontal:nth-child(1) { top: 60px; }
.grid-horizontal:nth-child(2) { top: 120px; }
.grid-horizontal:nth-child(3) { top: 180px; }

.grid-vertical {
    position: absolute;
    width: 1px;
    height: 100%;
    background: var(--gray-400);
    left: 50%;
    transform: translateX(-50%);
}

/* Analysis Panel */
.analysis-panel {
    width: 100%;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-md);
    border-top: 3px solid var(--primary-orange);
}

.status-display {
    margin-bottom: var(--spacing-md);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.status-dot {
    width: 10px;
    height: 10px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.status-text {
    font-weight: 600;
    font-size: var(--font-size-xs);
    color: #065f46;
}

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

.metric {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
}

.metric-label {
    flex: 1;
    color: var(--gray-600);
    font-size: 10px;
}

.metric-bar {
    flex: 2;
    height: 4px;
    background: var(--gray-200);
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.metric-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.5s ease;
}

.metric-fill.excellent {
    width: 98%;
    background: linear-gradient(90deg, #10b981, #059669);
}

.metric-fill.good {
    width: 92%;
    background: linear-gradient(90deg, #f59e0b, #d97706);
}

.metric-value {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 10px;
    min-width: 25px;
}

.recommendation-panel {
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--gray-200);
}

.recommendation-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gray-600);
    font-size: var(--font-size-xs);
}

.recommendation-item i {
    color: var(--primary-blue);
    font-size: 10px;
}

/* Feature Highlight Cards */
.feature-highlights {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.highlight-card {
    position: absolute;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 200px;
    border: 1px solid var(--gray-100);
    transition: var(--transition-normal);
    animation: floatSlow 6s ease-in-out infinite;
}

.highlight-card .card-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--font-size-lg);
    color: var(--white);
    flex-shrink: 0;
}

.card-ai .card-icon {
    background: var(--gradient-blue);
}

.card-camera .card-icon {
    background: var(--gradient-orange);
}

.card-health .card-icon {
    background: linear-gradient(135deg, #10b981, #059669);
}

.highlight-card .card-content h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-900);
    margin: 0 0 2px 0;
}

.highlight-card .card-content p {
    font-size: var(--font-size-xs);
    color: var(--gray-600);
    margin: 0;
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    opacity: 0;
    z-index: -1;
    transition: var(--transition-normal);
}

.highlight-card:hover .card-glow {
    opacity: 0.1;
}

/* Card Positioning */
.card-ai {
    top: 50px;
    left: -80px;
    animation-delay: 0s;
}

.card-camera {
    top: 200px;
    right: -90px;
    animation-delay: 2s;
}

.card-health {
    bottom: 80px;
    left: -70px;
    animation-delay: 4s;
}

/* Background Elements */
.bg-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: rotate 20s linear infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: -50px;
    right: -50px;
}

.circle-2 {
    width: 150px;
    height: 150px;
    bottom: -75px;
    left: -75px;
    animation-direction: reverse;
    animation-duration: 15s;
}

.wave {
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.3;
    animation: wave 8s ease-in-out infinite;
}

.wave-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.wave-2 {
    bottom: 30%;
    right: 20%;
    animation-delay: 4s;
}

/* ===== PROBLEM SECTION ===== */
.problem {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-50);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.problem-item {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.problem-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.problem-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-orange), var(--primary-blue));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--white);
    font-size: var(--font-size-2xl);
}

.problem-item h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.problem-item p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===== SOLUTION SECTION ===== */
.solution {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.solution-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.mission-vision {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.mission, .vision {
    background: var(--gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary-orange);
}

.mission h3, .vision h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.mission h3 i, .vision h3 i {
    color: var(--primary-orange);
}

.vision ul {
    list-style: none;
    padding: 0;
}

.vision li {
    margin-bottom: var(--spacing-sm);
    color: var(--gray-600);
}

.vision li strong {
    color: var(--primary-blue);
}

/* ===== SOLUTION VISUAL ===== */
.solution-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.healthcare-demo {
    position: relative;
    max-width: 500px;
    width: 100%;
}

.healthcare-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.image-caption {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(37, 99, 235, 0.9);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

/* ===== USE CASES SECTION ===== */
.use-cases {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.use-cases-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3xl);
}

.use-case-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-2xl);
    background: var(--gray-50);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.use-case-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.use-case-item.reverse {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.use-case-item:nth-child(3) {
    background: linear-gradient(135deg, #fef7ed 0%, #fed7aa 100%);
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.use-case-item.reverse .use-case-image {
    order: 2;
}

.use-case-item.reverse .use-case-content {
    order: 1;
}

.use-case-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.case-image {
    width: 100%;
    height: auto;
    max-width: 450px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}

.use-case-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.use-case-content p {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.case-features {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.case-tag {
    background: var(--gradient-orange);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

/* ===== FEATURES SECTION ===== */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--gray-50);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border-top: 4px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-top-color: var(--primary-orange);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--white);
    font-size: var(--font-size-2xl);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===== STATS SECTION ===== */
.stats {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-primary);
    color: var(--white);
}

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

.stats h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.stats-content > p {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-3xl);
    opacity: 0.9;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-card .stat-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto var(--spacing-lg);
    font-size: var(--font-size-xl);
}

.stat-card .stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.stat-card .stat-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

.cta-content p {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    margin-bottom: var(--spacing-2xl);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.cta-note {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.cta-note i {
    color: var(--primary-blue);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

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

.footer-brand p {
    margin-top: var(--spacing-md);
    color: var(--gray-400);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.footer-logo i {
    font-size: var(--font-size-2xl);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.footer-column h4 {
    color: var(--white);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-column a {
    display: block;
    color: var(--gray-400);
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-normal);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--gray-500);
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.2);
    }
}

@keyframes pointPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    }
    50% {
        transform: scale(1.1);
        box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
    }
}

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

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

@keyframes wave {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: scale(1.2) rotate(180deg);
        opacity: 0.1;
    }
}

@keyframes breathe {
    0%, 100% {
        transform: translateX(-50%) scale(1);
    }
    50% {
        transform: translateX(-50%) scale(1.02);
    }
}

@keyframes scan {
    0% {
        left: -100%;
    }
    50% {
        left: 0%;
    }
    100% {
        left: 100%;
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .solution-content {
        grid-template-columns: 1fr;
    }
    
    .use-case-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .use-case-item.reverse .use-case-image,
    .use-case-item.reverse .use-case-content {
        order: 0;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .section-header h2 {
        font-size: var(--font-size-3xl);
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-mockup {
        width: 350px;
        height: 350px;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }
    
    .highlight-card {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-primary, .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .healthcare-demo {
        max-width: 350px;
    }
    
    .case-image {
        max-width: 320px;
    }
    
    .use-case-content h3 {
        font-size: var(--font-size-xl);
    }
    
    .use-case-content p {
        font-size: var(--font-size-base);
    }
    
    .case-features {
        justify-content: center;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
    
    .ai-pose-container {
        max-width: 250px;
    }
    
    .detection-badge, .tech-badge {
        padding: 4px 8px;
        font-size: 10px;
    }
    
    .tech-badge {
        top: calc(var(--spacing-md) + 35px);
        right: var(--spacing-md);
    }
}