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



#comparison-forecast {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

#comparison-forecast thead {
  background-color: #1a1a2e;
  color: #00d4ff;
}

#comparison-forecast th {
  padding: 12px;
  text-align: center;
  font-weight: 600;
  border-bottom: 2px solid #00d4ff;
}

#comparison-forecast td {
  padding: 10px 12px;
  border-bottom: 1px solid #333;
  text-align: center;
}

#comparison-forecast tbody tr:hover {
  background-color: #16213e;
}

#comparison-forecast .aqi-value {
  font-weight: 500;
  text-align: center;
}

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1a2844;
    --bg-tertiary: #243254;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --border-color: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Navbar */
nav {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 2rem;
}

.nav-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-right: 3rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    white-space: nowrap;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0;
    margin: 0;
    flex-wrap: wrap;
}

.nav-links li {
    border-right: 1px solid var(--border-color);
}

.nav-links li:last-child {
    border-right: none;
}

.nav-links a {
    display: block;
    padding: 1.25rem 1.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    border-bottom: 3px solid transparent;
}

.nav-links a:hover {
    color: var(--text-primary);
    background-color: rgba(59, 130, 246, 0.1);
}

.nav-links a.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
    background-color: rgba(59, 130, 246, 0.05);
}

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

.page {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
}

.card-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Metrics */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-box {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    text-align: center;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    display: block;
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
}

.metric-unit {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: block;
    margin-top: 0.25rem;
}

/* Graph Section */
.graph-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

.graph-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.graph-container {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 1rem;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--border-color);
}

.graph-placeholder {
    text-align: center;
}

.graph-placeholder-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.graph-placeholder-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

.graph-image {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
}

/* Forecast Table */
.forecast-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

.forecast-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

thead {
    background-color: var(--bg-tertiary);
}

th {
    padding: 1rem;
    text-align: left;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

tbody tr:hover {
    background-color: rgba(59, 130, 246, 0.05);
}

.value-good {
    color: var(--success);
    font-weight: 600;
}

.value-warning {
    color: var(--warning);
    font-weight: 600;
}

.value-bad {
    color: var(--error);
    font-weight: 600;
}

/* Comparison Section */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.comparison-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem;
    transition: all 0.3s ease;
}

.comparison-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.comparison-model-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.model-badge {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent-blue);
}

.comparison-metrics {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.comparison-metric-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.comparison-metric-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.comparison-metric-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

.comparison-winner {
    background-color: rgba(16, 185, 129, 0.1);
    border-left: 3px solid var(--success);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-title {
        font-size: 1.25rem;
        margin-right: 1rem;
    }

    .nav-links a {
        padding: 1rem 0.75rem;
        font-size: 0.875rem;
    }

    .container {
        padding: 1rem;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .cards-grid,
    .metrics-grid,
    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .card-value {
        font-size: 1.5rem;
    }
}