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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

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

header {
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.add-feed-section,
.feeds-section {
    background: white;
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

h2 {
    margin-bottom: 20px;
    color: #667eea;
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

input[type="text"],
select {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
    background: white;
}

input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: #667eea;
}

small {
    display: block;
    margin-top: 5px;
    color: #888;
    font-size: 0.875rem;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

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

.btn-refresh {
    background: #27ae60;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: all 0.3s;
}

.btn-refresh:hover {
    background: #229954;
    transform: rotate(180deg);
}

.btn-delete {
    background: #e74c3c;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: all 0.3s;
}

.btn-delete:hover {
    background: #c0392b;
    transform: scale(1.1);
}

.btn-copy {
    padding: 4px 12px;
    font-size: 0.85rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 8px;
    transition: all 0.3s;
}

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

.message {
    padding: 12px;
    border-radius: 6px;
    margin-top: 15px;
    display: none;
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #999;
}

.empty-state p {
    font-size: 1.2rem;
}

.feeds-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.feed-card {
    border: 2px solid #f0f0f0;
    border-radius: 8px;
    padding: 20px;
    transition: all 0.3s;
}

.feed-card:hover {
    border-color: #667eea;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
}

.feed-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid #f0f0f0;
}

.feed-header h3 {
    color: #667eea;
    font-size: 1.3rem;
    margin: 0;
}

.feed-details p {
    margin-bottom: 12px;
    line-height: 1.6;
}

.feed-details strong {
    color: #555;
}

.rss-link,
.reddit-link {
    color: #667eea;
    text-decoration: none;
    word-break: break-all;
}

.rss-link:hover,
.reddit-link:hover {
    text-decoration: underline;
}

.feed-meta {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #f0f0f0;
}

.feed-meta small {
    color: #999;
}

.sort-badge {
    display: inline-block;
    padding: 4px 12px;
    background: #667eea;
    color: white;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .feeds-grid {
        grid-template-columns: 1fr;
    }

    .add-feed-section,
    .feeds-section {
        padding: 20px;
    }
}