/* public/styles/global.css - Enhanced version */
:root {
    --primary-color: #007bff;
    --secondary-color: #333;
    --background-color: #fff;
    --text-color: #333;
    --light-gray: #f4f4f4;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-heading: 'Georgia', serif;
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    margin: 0;
    padding: 0;
    line-height: 1.7;
    background-color: var(--background-color);
    color: var(--text-color);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header Styles */
header {
    background-color: var(--light-gray);
    padding: 1rem 0;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(244, 244, 244, 0.95);
}

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

.logo {
    font-weight: bold;
    font-size: 1.5rem;
    text-decoration: none;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
}

nav a {
    margin: 0 1rem;
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Main Content */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 8px;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
}

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

.btn {
    padding: 0.75rem 2rem;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Topic Grid */
.topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.topic-card {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.topic-card h3 {
    margin-top: 0;
    color: var(--primary-color);
}

/* Article Styles */
article {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

article h1 {
    margin-top: 0;
    font-family: var(--font-heading);
    font-size: 2.2rem;
    line-height: 1.3;
}

.article-meta {
    color: #777;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.article-summary {
    background: var(--light-gray);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    border-left: 4px solid var(--primary-color);
}

/* Callout Boxes */
.callout-box, .warning-box, .results-box {
    padding: 1.5rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.callout-box {
    background: #e3f2fd;
    border-left: 4px solid var(--primary-color);
}

.warning-box {
    background: #fff3cd;
    border-left: 4px solid var(--warning-color);
}

.results-box {
    background: #d4edda;
    border-left: 4px solid var(--success-color);
}

/* Tables */
.safety-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
}

.safety-table th {
    background: var(--light-gray);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.safety-table td {
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

.safety-table tr:hover {
    background: #f9f9f9;
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 3rem 0 2rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-top: 0;
    color: white;
}

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

.footer-section a {
    color: #ccc;
    text-decoration: none;
}

.footer-section a:hover {
    color: white;
}

.copyright {
    text-align: center;
    color: #aaa;
    font-size: 0.9rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #444;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    nav a {
        margin: 0 0.5rem;
    }
    
    .topic-grid {
        grid-template-columns: 1fr;
    }
    
    article {
        padding: 1.5rem;
    }
}

/* Print Styles */
@media print {
    header, footer, nav {
        display: none;
    }
    
    article {
        box-shadow: none;
        padding: 0;
    }
    
    a {
        color: var(--text-color);
        text-decoration: underline;
    }
}