:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --accent-primary: #667eea;
    --accent-hover: #5568d3;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --accent-primary: #818cf8;
    --accent-hover: #6366f1;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-secondary);
    min-height: 100vh;
    color: var(--text-primary);
    transition: background 0.3s, color 0.3s;
}

.container {
    max-width: 100%;
    margin: 0;
    padding: 0;
}

/* Header */
header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s, border-color 0.3s;
}

.header-content h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.header-content p {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Theme Toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 8px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle:hover {
    background: var(--bg-primary);
    border-color: var(--accent-primary);
}

/* Tabs */
.tabs {
    display: flex;
    gap: 0;
    background: var(--bg-card);
    padding: 0;
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background 0.3s, border-color 0.3s;
}

.tab-btn {
    flex: 1;
    padding: 16px 24px;
    border: none;
    background: var(--bg-card);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    color: var(--accent-primary);
    background: var(--bg-secondary);
}

.tab-btn.active {
    color: var(--accent-primary);
    background: var(--bg-card);
    border-bottom: 3px solid var(--accent-primary);
}

.tab-content {
    display: none;
    padding: 32px 40px;
}

.tab-content.active {
    display: block;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: background 0.3s, border-color 0.3s;
}

.card h2 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.3px;
}

/* Grid */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

/* Jobs Grid */
.jobs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.job-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid var(--accent-primary);
    transition: all 0.2s;
}

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

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.job-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 700;
}

.priority-badge {
    padding: 4px 12px;
    border-radius: 16px;
    color: white;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.job-details {
    color: var(--text-secondary);
    font-size: 14px;
}

.job-details p {
    margin: 8px 0;
}

/* Form elements */
label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

input,
select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
    background: var(--bg-card);
    color: var(--text-primary);
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.city-select {
    font-size: 15px;
    font-weight: 600;
    color: var(--accent-primary);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 8px -1px rgba(102, 126, 234, 0.4);
}

.btn-success {
    background: #10b981;
    color: white;
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: 0 6px 8px -1px rgba(16, 185, 129, 0.4);
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 0.8s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

.loading-overlay p {
    color: white;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 600;
}

/* Stats */
#currentStats {
    text-align: center;
    padding: 16px;
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

th,
td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background: var(--bg-secondary);
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
}

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

/* Charts */
canvas {
    max-height: 400px !important;
}

/* Responsive */
@media (max-width: 768px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .tab-btn {
        flex: 1 1 50%;
    }

    header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }
}