:root {
    --primary-color: #1a73e8;
    --secondary-color: #5f6368;
    --success-color: #34a853;
    --danger-color: #ea4335;
    --warning-color: #fbbc04;
    --info-color: #4285f4;
    --dark-bg: #202124;
    --light-bg: #f8f9fa;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card {
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.card-header {
    border-radius: 8px 8px 0 0 !important;
}

#chart-placeholder {
    display: none;
}

#dataChart {
    display: none;
}

#dataChart.active {
    display: block;
}

.table {
    font-size: 0.9rem;
}

.table th {
    position: sticky;
    top: 0;
    z-index: 1;
}

.pagination {
    margin: 0;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

.series-item {
    padding: 8px 12px;
    cursor: pointer;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.series-item:hover {
    background-color: #e8f0fe;
}

.series-item.active {
    background-color: #1a73e8;
    color: white;
}

.category-item {
    padding: 6px 10px;
    cursor: pointer;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: all 0.2s;
}

.category-item:hover {
    background-color: #e8f5e9;
}

.release-item {
    padding: 8px;
    border-bottom: 1px solid #eee;
    cursor: pointer;
}

.release-item:hover {
    background-color: #f8f9fa;
}

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

.release-date {
    font-size: 0.8rem;
    color: #666;
}

#current-time {
    font-family: monospace;
    font-size: 0.9rem;
}

.btn-outline-light:hover {
    background-color: rgba(255,255,255,0.2);
}

footer {
    margin-top: 2rem;
}

.form-control:focus, .form-select:focus {
    border-color: #1a73e8;
    box-shadow: 0 0 0 0.2rem rgba(26, 115, 232, 0.25);
}

.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1050;
}