/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #7c3aed;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    text-align: center;
}

.header-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1.5rem;
    border-radius: 0.75rem;
    color: white;
    text-align: center;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: bold;
    white-space: nowrap;
}

#timePeriod {
    font-size: 1.25rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card-wide {
    grid-column: 1 / -1;
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.chart-container {
    position: relative;
    height: 300px;
    margin-top: 1rem;
}

.chart-container-small {
    height: 220px;
}

.category-legend {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.75rem;
    margin-top: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

/* Extremes Container */
#extremesContainer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.extreme-category {
    background: var(--bg-color);
    border-radius: 0.75rem;
    padding: 1rem;
}

.extreme-category h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.extreme-item {
    background: white;
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    border-left: 4px solid var(--primary-color);
}

.extreme-item.smallest {
    border-left-color: var(--success-color);
}

.extreme-item.largest {
    border-left-color: var(--danger-color);
}

.extreme-label {
    font-weight: bold;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.extreme-value {
    font-size: 1rem;
    margin-top: 0.25rem;
}

/* Recommendations */
.recommendation-card {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

#recommendationsContainer {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.recommendation {
    background: white;
    border-radius: 0.75rem;
    padding: 1.5rem;
    border: 2px solid var(--primary-color);
}

.recommendation h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.recommendation-spec {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 0.5rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.spec-label {
    font-weight: 600;
    color: var(--text-secondary);
}

.spec-value {
    color: var(--text-primary);
}

.recommendation-note {
    background: var(--bg-color);
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

/* Controls */
.controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.filter-select, .search-input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: white;
    flex: 1;
    min-width: 200px;
}

.filter-select:focus, .search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
    min-width: 120px;
}

.dimension-input {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 0.875rem;
    background: white;
    width: 100%;
}

.dimension-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: 0.5rem;
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

thead {
    background: var(--primary-color);
    color: white;
}

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
}

th {
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.15s;
}

tbody tr:hover {
    background: var(--bg-color);
}

td {
    font-size: 0.875rem;
}

/* Distribution Table Compact Styling */
#distributionTable {
    font-size: 0.75rem;
}

#distributionTable th,
#distributionTable td {
    padding: 0.5rem 0.4rem;
    font-size: 0.75rem;
}

#distributionTable th {
    font-size: 0.7rem;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

#distributionTable td:nth-child(1) {
    width: 60px;
}

#distributionTable td:nth-child(4) {
    white-space: nowrap;
}

#distributionTable .category-badge {
    padding: 0.2rem 0.5rem;
    font-size: 0.7rem;
}

#distributionTable strong {
    font-weight: 600;
}

#distributionTable small {
    font-size: 0.6rem;
    display: block;
    margin-top: 2px;
}

.category-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
}

.category-xs { background: #10b981; }
.category-s { background: #3b82f6; }
.category-m { background: #f59e0b; }
.category-l { background: #ef4444; }
.category-xl { background: #7c3aed; }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
}

.btn {
    padding: 0.5rem 1.5rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    transition: background-color 0.2s;
}

.btn:hover:not(:disabled) {
    background: var(--secondary-color);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#pageInfo {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: white;
    font-size: 0.875rem;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    color: white;
}

.loading-overlay.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .header-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .header h1 {
        font-size: 1.75rem;
    }

    .header-stats {
        grid-template-columns: 1fr;
    }

    .controls {
        flex-direction: column;
    }

    .filter-select, .search-input {
        width: 100%;
    }

    #extremesContainer,
    #recommendationsContainer {
        grid-template-columns: 1fr;
    }
}