/* Custom CSS for Dashboard - Replaces Tailwind CSS */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f3f4f6;
    padding: 2rem;
    color: #1f2937;
    line-height: 1.5;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
}

h1 {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #1f2937;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

h3 {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Grid System */
.grid {
    display: grid;
    gap: 1rem;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .md\:grid-cols-4 {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

/* Cards */
.card {
    background: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.stat-card p {
    font-size: 1.875rem;
    font-weight: 700;
}

/* Chart Container */
.chart-container {
    position: relative;
    height: 300px;
    margin-bottom: 2rem;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
}

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

thead {
    background-color: #f9fafb;
}

th {
    padding: 0.75rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 500;
    color: #6b7280;
    text-transform: uppercase;
    border-bottom: 1px solid #e5e7eb;
}

td {
    padding: 1rem 1.5rem;
    white-space: nowrap;
    border-bottom: 1px solid #e5e7eb;
}

tbody tr {
    background-color: white;
}

tbody tr:hover {
    background-color: #f9fafb;
}

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

/* Spacing */
.mb-4 {
    margin-bottom: 1rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

.gap-4 {
    gap: 1rem;
}

.gap-6 {
    gap: 1.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }
    
    h1 {
        font-size: 1.875rem;
    }
    
    .card {
        padding: 1rem;
    }
}