:root {
    --primary-color: #4361ee;
    --primary-hover: #3a56d4;
    --secondary-color: #3f37c9;
    --success-color: #2ec4b6;
    --danger-color: #e63946;
    --warning-color: #ff9f1c;
    --info-color: #4cc9f0;
    --dark-color: #1e293b;
    --light-bg: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-muted: #64748b;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
}

body {
    background-color: var(--light-bg);
    color: #334155;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
}

/* Card Styling */
.card-stat {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--card-bg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
}

/* Table Design */
.custom-table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
}

.custom-table th {
    background: #f1f5f9;
    color: #475569;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    border-top: none;
    border-bottom: 1px solid var(--border-color);
}

.custom-table td {
    padding: 14px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.92rem;
}

/* Badges */
.badge-status {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
}

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

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

/* Navbar */
.navbar-brand {
    font-weight: 800;
    letter-spacing: -0.5px;
    font-size: 1.25rem;
}

.nav-link {
    font-weight: 500;
    padding: 8px 14px !important;
}

.nav-link.active {
    color: var(--primary-color) !important;
    font-weight: 600;
}