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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
nav {
    background-color: #2c3e50;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    margin-top: 60px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #000;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    transition: transform 0.3s;
}

.download-btn:hover {
    transform: translateY(-2px);
}

/* Main Content */
main {
    padding: 4rem 0;
}

section {
    margin-bottom: 4rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: #2c3e50;
}

/* How it Works */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 12px;
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    text-align: center;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 12px;
}

.step h3 {
    color: #667eea;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

/* Search Section */
.search-section {
    background-color: #f8f9fa;
    padding: 3rem 0;
    border-radius: 12px;
}

.search-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.search-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.search-input {
    flex: 1;
    padding: 12px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.search-input:focus {
    outline: none;
    border-color: #667eea;
}

.search-btn {
    background-color: #667eea;
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.search-btn:hover:not(:disabled) {
    background-color: #5a67d8;
}

.search-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.search-results {
    margin-top: 2rem;
    text-align: left;
}

.result-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.result-verified {
    border-left: 4px solid #48bb78;
}

.result-not-found {
    border-left: 4px solid #f56565;
    color: #c53030;
}

.error-message {
    color: #f56565;
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.report-abuse {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.report-abuse a {
    color: #667eea;
    text-decoration: none;
}

/* Footer */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 3rem 0;
    text-align: center;
}

footer a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
}

footer a:hover {
    text-decoration: underline;
}

/* Page specific styles */
.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.whitepaper-content h1,
.whitepaper-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.whitepaper-content p {
    margin-bottom: 1rem;
    text-align: justify;
}

.diagram {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
    font-family: monospace;
    font-size: 0.9rem;
    overflow-x: auto;
    white-space: pre;
}

.tos-content h3 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.tos-content ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.tos-content li {
    margin-bottom: 0.5rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .search-form {
        flex-direction: column;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
}