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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 28px;
    margin-bottom: 10px;
    color: #2c3e50;
}

nav {
    display: flex;
    gap: 15px;
}

nav a {
    text-decoration: none;
    color: #666;
    padding: 8px 16px;
    border-radius: 4px;
    transition: all 0.2s;
}

nav a:hover {
    background: #f0f0f0;
    color: #333;
}

nav a.active {
    background: #3498db;
    color: #fff;
}

main {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

section {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

section h2 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group input:focus {
    outline: none;
    border-color: #3498db;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #888;
    font-size: 12px;
}

.form-group input[type="file"] {
    padding: 8px;
    background: #f9f9f9;
}

.btn-primary {
    background: #3498db;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: #2980b9;
}

.btn-small {
    display: inline-block;
    background: #f0f0f0;
    color: #333;
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 13px;
    transition: background 0.2s;
}

.btn-small:hover {
    background: #e0e0e0;
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

.notice {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    padding: 12px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: space-between;
}

.page-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.page-list.full {
    gap: 12px;
}

.page-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 6px;
    border: 1px solid #eee;
}

.page-info h3 {
    font-size: 16px;
    margin-bottom: 4px;
    color: #2c3e50;
}

.page-info .slug {
    font-size: 13px;
    color: #888;
    font-family: monospace;
}

.page-info .url {
    font-size: 12px;
    color: #3498db;
    margin-top: 2px;
}

.page-info .date {
    font-size: 12px;
    color: #999;
    margin-top: 4px;
}

.page-actions {
    display: flex;
    gap: 8px;
}

.empty {
    text-align: center;
    color: #888;
    padding: 40px;
}

.empty a {
    color: #3498db;
}

#result {
    margin-top: 15px;
}

.success {
    background: #d4edda;
    color: #155724;
    padding: 12px;
    border-radius: 4px;
}

.success a {
    color: #155724;
    font-weight: 500;
}

.error {
    background: #f8d7da;
    color: #721c24;
    padding: 12px;
    border-radius: 4px;
}

.loading {
    background: #d1ecf1;
    color: #0c5460;
    padding: 12px;
    border-radius: 4px;
}

.preview-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.preview-actions {
    display: flex;
    gap: 8px;
}

.iframe-container {
    flex: 1;
    overflow: hidden;
}

.iframe-container iframe {
    width: 100%;
    height: 100%;
}

.error-banner {
    background: #f8d7da;
    color: #721c24;
    padding: 40px;
    text-align: center;
}

.error-banner p {
    font-size: 18px;
    margin-bottom: 20px;
}

@media (max-width: 600px) {
    .container {
        padding: 10px;
    }

    .page-item {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

}