/* Shared styles for all pages */

:root {
    --primary-color: #0070f3;
    --text-color: #222;
    --text-light: #555;
    --text-lighter: #999;
    --border-color: #e5e5e5;
    --background: #ffffff;
}

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

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    color: var(--text-color);
    background: var(--background);
    line-height: 1.6;
}

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

a:hover {
    text-decoration: underline;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 60px 20px;
    text-align: center;
    margin-bottom: 40px;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    font-weight: 700;
}

header p {
    font-size: 1.3rem;
    font-weight: 300;
    opacity: 0.9;
}

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

footer {
    background: #f5f5f5;
    color: var(--text-lighter);
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
    border-top: 1px solid var(--border-color);
}

.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-lighter);
    font-size: 1rem;
}

.error {
    background: #fee;
    border: 1px solid #fcc;
    border-radius: 8px;
    padding: 20px;
    color: #c33;
}

.error strong {
    display: block;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.tag {
    display: inline-block;
    background: #f0f0f0;
    color: #666;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    margin-right: 5px;
}

@media (max-width: 768px) {
    header {
        padding: 40px 20px;
    }

    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 1rem;
    }

    .container {
        padding: 0 15px;
    }
}