/* Gomoku Official Website Styles */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* Header */
header {
    background: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

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

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

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

nav a:hover {
    opacity: 0.8;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 150px 0 100px;
    text-align: center;
}

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

.hero p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.btn-primary {
    background: #4CAF50;
    color: white;
}

.btn-secondary {
    background: #fff;
    color: #667eea;
}

.btn-outline {
    border: 2px solid #667eea;
    color: #667eea;
    background: transparent;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: #f8f9fa;
    transition: transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* Screenshots Section */
.screenshots {
    padding: 80px 0;
    text-align: center;
}

.screenshots h2 {
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.screenshot-placeholder {
    background: #ddd;
    border-radius: 12px;
    padding: 100px 20px;
    text-align: center;
    color: #666;
}

/* Download Page */
.download {
    padding: 150px 0 80px;
    background: white;
}

.download h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.download-card {
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: border-color 0.3s;
}

.download-card:hover {
    border-color: #667eea;
}

.download-card h2 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.download-card p {
    margin-bottom: 1.5rem;
    color: #666;
}

.version-info {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #999;
}

/* Privacy & Terms Pages */
.content-page {
    padding: 150px 0 80px;
    background: white;
}

.content-page h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.content-page h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: #34495e;
}

.content-page p {
    margin-bottom: 1rem;
    color: #555;
}

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

.content-page li {
    margin-bottom: 0.5rem;
    color: #555;
}

/* About Page */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content .logo-large {
    font-size: 5rem;
    margin-bottom: 1rem;
}

.contact-info {
    margin-top: 2rem;
}

.contact-info p {
    margin-bottom: 0.5rem;
}

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

footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

footer nav {
    display: flex;
    gap: 2rem;
}

footer a {
    color: #ecf0f1;
    text-decoration: none;
}

footer a:hover {
    color: white;
}

footer .copyright {
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    nav ul {
        gap: 1rem;
        font-size: 0.9rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .download-cards {
        grid-template-columns: 1fr;
    }
}