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

a {
    text-decoration: none;
    color: inherit;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

header {
    background: #fff;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 1.5rem;
}

.btn-add {
    background: #4CAF50;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
}

.btn-add:hover {
    background: #45a049;
}

.tabs {
    display: flex;
    background: #fff;
    padding: 0 20px;
    gap: 10px;
    border-bottom: 1px solid #eee;
}

.tabs a {
    padding: 15px 20px;
    text-decoration: none;
    color: #666;
    border-bottom: 3px solid transparent;
}

.tabs a.active {
    color: #4CAF50;
    border-bottom-color: #4CAF50;
}

main {
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.card-link {
    display: block;
    color: inherit;
}

.card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.card-photo img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 15px;
}

.card-body h3 {
    margin-bottom: 10px;
    font-size: 1.1rem;
    color: #333;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 10px;
}

.badge.pending {
    background: #fff3cd;
    color: #856404;
}

.badge.completed {
    background: #d4edda;
    color: #155724;
}

.source {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 8px;
}

.notes {
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 10px;
    padding: 8px;
    background: #f9f9f9;
    border-radius: 6px;
}

.empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: #999;
}