:root {
    /* Light Theme (Default) */
    --bg-primary: #f8f9fa;
    --bg-secondary: #ffffff;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --border-color: #e5e7eb;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --card-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --header-bg: #ffffff;
    --success-color: #10b981;
    --tag-bg: #eff6ff;
    --tag-text: #2563eb;
}

[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --border-color: #374151;
    --accent-color: #3b82f6;
    --accent-hover: #60a5fa;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --header-bg: #1f2937;
    --success-color: #34d399;
    --tag-bg: #374151;
    --tag-text: #e5e7eb;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

header h1 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.header-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

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

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
}

/* Icons */
.icon-sun, .icon-moon {
    font-size: 1.25rem;
}

[data-theme="light"] .icon-moon,
[data-theme="dark"] .icon-sun {
    display: none;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    box-shadow: var(--card-shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    overflow: hidden;
}

.stat-icon {
    font-size: 1.5rem;
    color: var(--accent-color);
    background-color: var(--bg-primary);
    width: 3rem;
    height: 3rem;
    min-width: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 1200px) {
    .charts-container {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    min-width: 0; /* Fix for chart.js in flex/grid */
    width: 100%;
}

.chart-wrapper {
    position: relative;
    height: 400px;
    width: 100%;
}

.pie-wrapper {
    height: 350px;
    display: flex;
    justify-content: center;
    width: 100%;
}

/* Recent Jobs */
.recent-jobs {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
}

.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.job-item {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.25rem;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.job-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--card-shadow);
    border-color: var(--accent-color);
}

.job-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
    white-space: normal;
}

.job-company {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.job-techs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    font-size: 0.75rem;
    background-color: var(--tag-bg);
    color: var(--tag-text);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-weight: 500;
}

.tech-tag.active {
    background-color: var(--accent-color);
    color: white;
}

/* Loading */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: opacity 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

footer {
    text-align: center;
    margin-top: 3rem;
    padding-bottom: 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}


/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-controls {
        width: 100%;
        justify-content: space-between;
        flex-wrap: wrap;
    }

    header h1 {
        font-size: 1.5rem;
    }

    .chart-wrapper {
        height: 300px;
    }

    .pie-wrapper {
        height: 300px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .jobs-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .job-item {
        padding: 1rem;
    }

    .job-title {
        font-size: 0.95rem;
    }

    .recent-jobs {
        padding: 1rem;
    }
}