body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: #f5f5f5;
}

header {
    background-color: #3f51b5;
    color: white;
    padding: 0 2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

#tabs {
    display: flex;
    height: 100%;
}

.tab-button {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    padding: 0 1.5rem;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s;
    height: 100%;
    border-bottom: 4px solid transparent;
}

.tab-button:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.tab-button.active {
    color: white;
    border-bottom: 4px solid white;
}

#container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

#sidebar {
    width: 350px;
    background-color: white;
    border-right: 1px solid #ddd;
    display: flex;
    flex-direction: column;
}

#main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

#drop-zone {
    border: 2px dashed #3f51b5;
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    color: #3f51b5;
    cursor: pointer;
    margin: 1rem;
    transition: background-color 0.3s;
}

#drop-zone.hover {
    background-color: #e8eaf6;
}

.search-box {
    padding: 1rem;
    border-bottom: 1px solid #eee;
}

.search-box input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

#rule-list {
    flex: 1;
    overflow-y: auto;
}

.rule-item {
    padding: 1rem;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: background-color 0.2s;
}

.rule-item:hover {
    background-color: #f0f0f0;
}

.rule-item.active {
    background-color: #e8eaf6;
    border-left: 4px solid #3f51b5;
}

.rule-name {
    font-weight: bold;
    display: block;
    margin-bottom: 0.25rem;
    word-break: break-all;
    font-family: monospace;
}

.rule-stats {
    font-size: 0.8rem;
    color: #666;
}

.card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.card h2 {
    margin-top: 0;
    color: #333;
}

.keep-rule-source {
    background-color: #f8f8f8;
    padding: 1rem;
    border-radius: 4px;
    font-family: monospace;
    white-space: pre-wrap;
    border-left: 4px solid #3f51b5;
    margin-bottom: 1rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin: 1.5rem 0 1rem 0;
    display: flex;
    justify-content: space-between;
}

.item-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.item-list li {
    padding: 0.5rem;
    border-bottom: 1px solid #eee;
    font-family: monospace;
    font-size: 0.9rem;
}

.item-list li:last-child {
    border-bottom: none;
}

.badge {
    background-color: #eee;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.75rem;
    margin-left: 5px;
}

.badge-red { background-color: #ffebee; color: #c62828; }
.badge-blue { background-color: #e3f2fd; color: #1565c0; }
.badge-green { background-color: #e8f5e9; color: #2e7d32; }

.banner {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.banner-warning {
    background-color: #fff3e0;
    border-left: 4px solid #ff9800;
    color: #e65100;
}

.subsumed-by-item {
    background-color: rgba(255, 255, 255, 0.5);
    padding: 0.5rem;
    margin-top: 0.25rem;
    border-radius: 2px;
    font-family: monospace;
    word-break: break-all;
    cursor: pointer;
    transition: background-color 0.2s;
}

.subsumed-by-item:hover {
    background-color: rgba(255, 255, 255, 0.8);
}

.show-more-btn {
    display: block;
    width: 100%;
    padding: 0.75rem;
    margin-top: 1rem;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #3f51b5;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.show-more-btn:hover {
    background-color: #eeeeee;
}

.tab-button .badge {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    margin-left: 8px;
    vertical-align: middle;
}

.tab-button.active .badge {
    background-color: white;
    color: #3f51b5;
}

#stats-overview {
    margin-bottom: 2rem;
}

.stats-table {
    width: 100%;
    border-collapse: collapse;
}

.stats-table th, .stats-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid #eee;
}

.stats-table th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 500;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: #fafafa;
}

.stats-table tr:last-child td {
    border-bottom: none;
}

.stats-table td {
    font-size: 1.1rem;
    color: #3f51b5;
    font-weight: 500;
}

.stats-table td:first-child {
    color: #333;
    font-weight: 400;
}

.stat-card {
    background-color: white;
    padding: 1rem;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #3f51b5;
}

.stat-label {
    font-size: 0.8rem;
    color: #666;
    text-transform: uppercase;
}

.hidden {
    display: none !important;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border-left-color: #3f51b5;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loading-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #666;
}

.sub-tabs {
    display: flex;
    border-bottom: 1px solid #ddd;
    margin-bottom: 1rem;
}

.sub-tab-button {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: #666;
    border-bottom: 2px solid transparent;
}

.sub-tab-button:hover {
    color: #3f51b5;
    background-color: #f0f0f0;
}

.sub-tab-button.active {
    color: #3f51b5;
    border-bottom: 2px solid #3f51b5;
}