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

body {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
    background: #fff;
    min-height: 100vh;
    color: #333;
    padding: 40px 20px;
}

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

header {
    margin-bottom: 40px;
}

header h1 {
    font-size: 1.8rem;
    color: #000;
    font-weight: 600;
    margin-bottom: 8px;
}

.tagline {
    color: #888;
    font-size: 0.95rem;
}

.input-group {
    display: flex;
    gap: 10px;
    justify-content: center;
}

input[type="url"] {
    width: 300px;
    padding: 12px 15px;
    font-size: 0.95rem;
    border: 1px solid #ddd;
    background: #fff;
    color: #333;
}

input[type="url"]:focus {
    outline: none;
    border-color: #999;
}

button {
    padding: 12px 24px;
    font-size: 0.95rem;
    border: 1px solid #333;
    background: #333;
    color: #fff;
    cursor: pointer;
}

button:hover {
    background: #555;
}

.message {
    padding: 12px;
    margin: 20px 0;
    border: 1px solid #ddd;
    text-align: center;
}

.message.success {
    border-color: #4a4;
    color: #4a4;
    background: #f0fff0;
}

.message.error {
    border-color: #a44;
    color: #a44;
    background: #fff0f0;
}

.hidden {
    display: none;
}

.preview-section {
    margin-top: 30px;
}

.preview-section h2 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 15px;
    color: #666;
}

.preview-card {
    background: #fafafa;
    border: 1px solid #eee;
    margin-bottom: 15px;
    text-align: left;
}

.preview-card img {
    width: 100%;
    max-height: 180px;
    object-fit: cover;
    border-bottom: 1px solid #eee;
}

.preview-info {
    padding: 20px;
}

.preview-info h3 {
    color: #000;
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.preview-info p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.preview-info a {
    color: #0066cc;
    text-decoration: none;
    font-size: 0.85rem;
    word-break: break-all;
}

.preview-info a:hover {
    text-decoration: underline;
}

.timestamp {
    display: block;
    margin-top: 10px;
    font-size: 0.8rem;
    color: #999;
}

.preview-grid {
    display: grid;
    gap: 15px;
}

.loading, .empty, .error {
    padding: 40px;
    color: #999;
    text-align: center;
}

.examples {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}

.examples h2 {
    font-size: 1rem;
    font-weight: 500;
    color: #888;
    margin-bottom: 20px;
}

.example-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    text-align: left;
}

.example-card {
    border: 1px solid #eee;
    padding: 15px;
    background: #fafafa;
}

.example-card h4 {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 5px;
}

.example-card p {
    font-size: 0.8rem;
    color: #888;
}

footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    color: #aaa;
    font-size: 0.85rem;
}