* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --surface: #ffffff;
    --surface-dark: #0f0f23;
    --text: #1a1a2e;
    --text-dark: #e2e8f0;
    --text-muted: #64748b;
    --text-muted-dark: #94a3b8;
    --border: #e2e8f0;
    --border-dark: #334155;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --surface: var(--surface-dark);
        --text: var(--text-dark);
        --text-muted: var(--text-muted-dark);
        --border: var(--border-dark);
    }
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background: var(--surface);
    transition: all 0.3s ease;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero {
    background: var(--gradient);
    padding: 4rem 0;
    text-align: center;
    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='%23ffffff' fill-opacity='0.1'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

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

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    font-weight: 300;
}

.app-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    color: white;
    font-weight: 500;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.app-badge:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.3);
}

.content {
    padding: 4rem 0;
}

.last-updated {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 0.9rem;
    padding: 1rem;
    background: rgba(99, 102, 241, 0.05);
    border-radius: 12px;
    border-left: 4px solid var(--primary);
}

.section {
    margin-bottom: 3rem;
    background: var(--surface);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.section:hover::before {
    opacity: 1;
}

.section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.section-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    margin-right: 1rem;
    font-size: 1.1rem;
}

.section h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text);
    display: flex;
    align-items: center;
}

.section h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 2rem 0 1rem 0;
    color: var(--primary);
}

.section ul, .section ol {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.section li {
    margin-bottom: 0.5rem;
    color: var(--text);
}

.section li strong {
    color: var(--primary);
    font-weight: 600;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border: 1px solid var(--primary);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    position: relative;
}

.highlight-box::before {
    content: '💡';
    position: absolute;
    top: -10px;
    left: 20px;
    background: var(--surface);
    padding: 0 10px;
    font-size: 1.2rem;
}

.data-map {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.data-card {
    background: rgba(99, 102, 241, 0.05);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
}

.data-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.data-card h4 {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}

.data-card h4::before {
    content: '📊';
    margin-right: 0.5rem;
}

.contact-section {
    background: var(--gradient);
    color: white;
    text-align: center;
    border-radius: 20px;
    padding: 3rem;
    margin-top: 4rem;
}

.contact-section h2 {
    color: white;
    margin-bottom: 1rem;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 1rem 1.5rem;
    border-radius: 50px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    color: white;
}

.contact-item::before {
    content: '📧';
    margin-right: 0.75rem;
    font-size: 1.2rem;
}

.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--gradient);
    color: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 1.5rem;
    }
    
    .section h2 {
        font-size: 1.5rem;
        flex-direction: column;
        text-align: center;
    }
    
    .section-number {
        margin: 0 0 1rem 0;
    }
    
    .contact-info {
        flex-direction: column;
        align-items: center;
    }
    
    .data-map {
        grid-template-columns: 1fr;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation */
.fade-in {
    animation: fadeIn 0.8s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}