:root {
    --bg-color: #121212;
    --card-bg-color: #1e1e1e;
    --primary-text-color: #e0e0e0;
    --secondary-text-color: #b0b0b0;
    --border-color: #333;
    --accent-color: #4a90e2;
    --positive-color: #4caf50;
    --negative-color: #f44336;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body.light-theme {
    --bg-color: #f5f5f5;
    --card-bg-color: #ffffff;
    --primary-text-color: #212121;
    --secondary-text-color: #616161;
    --border-color: #e0e0e0;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--primary-text-color);
    margin: 0;
    padding: 2rem;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    color: var(--accent-color);
    font-weight: 600;
}

.header-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem 2rem;
    margin-top: 1rem;
}

.global-settings {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

#env-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.env-tab {
    padding: 0.75rem 1.5rem;
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    color: var(--secondary-text-color);
    cursor: pointer;
    border-radius: 8px;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.env-tab:hover {
    background-color: #2a2a2a;
}
body.light-theme .env-tab:hover {
    background-color: #f0f0f0;
}

.env-tab.active {
    background-color: var(--accent-color);
    color: white;
    font-weight: 500;
    border-color: var(--accent-color);
}

#theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--primary-text-color);
    font-size: 1.2rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.2s, background-color 0.2s;
}
#theme-toggle:hover {
    transform: scale(1.1);
    background-color: var(--card-bg-color);
}

#app-container {
    display: grid;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.card {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s, border-color 0.3s;
}
body.light-theme .card {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}


.card h2 {
    margin-top: 0;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    color: var(--primary-text-color);
    font-weight: 500;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    text-align: center;
}

.summary-card h3 {
    margin-bottom: 0.5rem;
    color: var(--secondary-text-color);
    font-weight: 400;
    font-size: 1rem;
}

p.metric {
    font-size: 2rem;
    font-weight: 600;
    margin: 0;
}

.case-name {
    font-size: 0.8rem;
    color: var(--secondary-text-color);
    word-break: break-all;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

label {
    color: var(--secondary-text-color);
}

select {
    background-color: #2c2c2c;
    color: var(--primary-text-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem;
    font-family: inherit;
    min-width: 100px;
}
body.light-theme select {
    background-color: #f0f0f0;
}


.table-container {
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

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

th, td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

thead th {
    background-color: #252525;
    position: sticky;
    top: 0;
    z-index: 10;
}
body.light-theme thead th {
    background-color: #f5f5f5;
}

th.sortable {
    cursor: pointer;
}
th.sortable:hover {
    background-color: #353535;
}
body.light-theme th.sortable:hover {
    background-color: #e8e8e8;
}

tbody tr:nth-child(even) {
    background-color: #222;
}
body.light-theme tbody tr:nth-child(even) {
    background-color: #f9f9f9;
}

.positive { color: var(--positive-color); }
.negative { color: var(--negative-color); }

.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}
.chart-wrapper h3 {
    text-align: center;
    font-weight: 400;
    font-size: 1rem;
    color: var(--secondary-text-color);
}

.chart-container {
    position: relative;
    height: 300px;
}

#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    flex-direction: column;
    gap: 1rem;
}

#loader.hidden {
    display: none;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

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