/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Color System */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    --secondary-50: #f0fdfa;
    --secondary-100: #ccfbf1;
    --secondary-200: #99f6e4;
    --secondary-300: #5eead4;
    --secondary-400: #2dd4bf;
    --secondary-500: #14b8a6;
    --secondary-600: #0d9488;
    --secondary-700: #0f766e;
    --secondary-800: #115e59;
    --secondary-900: #134e4a;
    
    --accent-50: #fff7ed;
    --accent-100: #ffedd5;
    --accent-200: #fed7aa;
    --accent-300: #fdba74;
    --accent-400: #fb923c;
    --accent-500: #f97316;
    --accent-600: #ea580c;
    --accent-700: #c2410c;
    --accent-800: #9a3412;
    --accent-900: #7c2d12;
    
    --success-500: #16a34a;
    --warning-500: #eab308;
    --error-500: #dc2626;
    
    /* Neutral Colors */
    --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;
    
    /* Spacing System (8px base) */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 40px;
    --space-6: 48px;
    --space-8: 64px;
    --space-10: 80px;
    --space-12: 96px;
    --space-16: 128px;
    --space-20: 160px;
    --space-24: 192px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 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);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: var(--line-height-normal);
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    margin-bottom: var(--space-2);
    color: var(--gray-900);
}

h1 { font-size: 3rem; font-weight: 700; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-2);
    color: var(--gray-700);
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-700);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-4);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-4);
    background: white;
    color: var(--primary-600);
    font-weight: 600;
    border: 2px solid var(--primary-200);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    font-size: 1rem;
}

.btn-secondary:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
    color: var(--primary-700);
    transform: translateY(-1px);
}

/* Navigation */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all var(--transition-fast);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-3);
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-700);
}

.nav-brand .logo svg {
    color: var(--primary-600);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

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

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-600);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary-600);
    border-radius: var(--radius-full);
}

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

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: var(--space-24) 0 var(--space-16);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%233b82f6' fill-opacity='0.05' fill-rule='nonzero'%3E%3Ccircle cx='7' cy='7' r='7'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.4;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--space-3);
    background: linear-gradient(135deg, var(--gray-900), var(--primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-700);
    margin-bottom: var(--space-2);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--space-5);
}

.hero-buttons {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.feature-tag {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-2);
    background: white;
    border: 1px solid var(--primary-200);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-700);
    box-shadow: var(--shadow-sm);
}

.feature-tag svg {
    color: var(--primary-600);
}

.hero-image {
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.floating-card {
    position: absolute;
    bottom: var(--space-3);
    right: var(--space-3);
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    animation: float 6s ease-in-out infinite;
}

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

.notification-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    width: 250px;
}

.notification-header {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-weight: 600;
    color: var(--primary-700);
    font-size: 0.875rem;
}

.notification-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: var(--primary-100);
    border-radius: var(--radius-full);
}

.notification-icon svg {
    color: var(--primary-600);
}

.notification-body p {
    font-size: 0.875rem;
    color: var(--gray-700);
    margin: 0;
}

.notification-time {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: var(--space-1);
}

/* Features Section */
.features {
    padding: var(--space-16) 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-3);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-5);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-200);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-100), var(--secondary-100));
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-4);
    transition: all var(--transition-normal);
}

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

.feature-icon svg {
    color: var(--primary-600);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-3);
    color: var(--gray-900);
}

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

/* Why Choose Section */
.why-choose {
    padding: var(--space-16) 0;
    background: var(--gray-50);
}

.why-choose-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
    align-items: center;
}

.why-choose-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.why-choose-text h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.benefit-item {
    display: flex;
    gap: var(--space-3);
    align-items: flex-start;
}

.benefit-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--success-500), var(--secondary-500));
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.benefit-icon svg {
    color: white;
}

.benefit-content h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-1);
}

.benefit-content p {
    color: var(--gray-600);
    margin: 0;
}

/* Download Section */
.download {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--secondary-600) 100%);
    color: white;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
}

.download-text h2 {
    font-size: 2.5rem;
    color: white;
    margin-bottom: var(--space-4);
}

.download-text p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-6);
    line-height: var(--line-height-relaxed);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.app-store-btn {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    color: white;
    text-decoration: none;
    transition: all var(--transition-fast);
    min-width: 200px;
}

.app-store-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    color: white;
}

.app-store-btn svg {
    width: 32px;
    height: 32px;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-subtitle {
    font-size: 0.875rem;
    opacity: 0.8;
}

.btn-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.download-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: white;
    padding: var(--space-12) 0 var(--space-4);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-brand .logo {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-3);
}

.footer-brand .logo svg {
    color: var(--primary-400);
}

.footer-brand p {
    color: var(--gray-400);
    margin: 0;
}

.footer-section h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-3);
    color: white;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer-section ul a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-section ul a:hover {
    color: var(--primary-400);
}

.social-links {
    display: flex;
    gap: var(--space-2);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: var(--radius-full);
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-600);
    color: white;
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: var(--space-4);
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-400);
    margin: 0;
}

/* Legal Pages */
.legal-page {
    padding: var(--space-20) 0 var(--space-12);
    background: white;
}

.legal-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.legal-header h1 {
    font-size: 3rem;
    margin-bottom: var(--space-2);
}

.last-updated {
    font-size: 1rem;
    color: var(--gray-600);
    margin: 0;
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-section {
    margin-bottom: var(--space-8);
}

.legal-section h2 {
    font-size: 1.875rem;
    color: var(--primary-700);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 2px solid var(--primary-100);
}

.legal-section h3 {
    font-size: 1.25rem;
    color: var(--gray-800);
    margin: var(--space-4) 0 var(--space-2);
}

.legal-section p {
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--space-3);
}

.legal-section ul, 
.legal-section ol {
    margin: var(--space-3) 0;
    padding-left: var(--space-4);
}

.legal-section li {
    margin-bottom: var(--space-2);
    line-height: var(--line-height-relaxed);
}

.legal-section li strong {
    color: var(--primary-700);
}

.contact-info {
    background: var(--gray-50);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.contact-info p {
    margin-bottom: var(--space-2);
}

.contact-info p:last-child {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content,
    .why-choose-content,
    .download-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        text-align: center;
    }
    
    .why-choose-image {
        order: -1;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-6);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: var(--space-20) 0 var(--space-12);
    }
    
    .hero-text h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-buttons {
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-4);
        text-align: center;
    }
    
    .legal-header h1 {
        font-size: 2.25rem;
    }
    
    .legal-section h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-2);
    }
    
    .hero-text h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .why-choose-text h2,
    .download-text h2 {
        font-size: 2rem;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .app-store-btn {
        min-width: auto;
        width: 100%;
        max-width: 280px;
    }
}