:root {
    --primary-color: #0f172a;
    --accent-color: #3b82f6;
    --bg-color: #fcfcfc;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 14px;
}

.navbar {
    border-bottom: 1px solid var(--border-color);
    background: #fff;
}

.card {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: none;
}

.btn {
    border-radius: 4px;
    font-weight: 500;
    font-size: 13px;
    padding: 0.5rem 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #1e293b;
    border-color: #1e293b;
}

.table {
    font-size: 13px;
}

.table th {
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.05em;
    border-top: none;
}

.badge {
    font-weight: 500;
    border-radius: 2px;
    padding: 0.35em 0.5em;
}

.priority-High { background-color: #fee2e2; color: #991b1b; }
.priority-Medium { background-color: #fef3c7; color: #92400e; }
.priority-Low { background-color: #dcfce7; color: #166534; }

.status-Open { color: #3b82f6; }
.status-In-Progress { color: #f59e0b; }
.status-Closed { color: #6b7280; text-decoration: line-through; }