:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --sidebar-bg: #0f172a;
    --sidebar-text: #94a3b8;
    --sidebar-active: #3b82f6;
    --body-bg: #f8fafc;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-main: #1e293b;
    --text-muted: #64748b;
}

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

/* Sidebar */
.sidebar {
    background-color: var(--sidebar-bg);
    width: 260px;
    min-height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    box-shadow: 4px 0 15px rgba(0, 0, 0, 0.05);
}

.sidebar .brand-title {
    color: #ffffff;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar .nav-link {
    color: var(--sidebar-text);
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    border-left: 3px solid transparent;
    transition: all 0.2s ease;
}

.sidebar .nav-link i {
    font-size: 1.15rem;
    margin-right: 0.85rem;
    width: 20px;
    text-align: center;
}

.sidebar .nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.05);
}

.sidebar .nav-link.active {
    color: #ffffff;
    background: rgba(59, 130, 246, 0.15);
    border-left-color: var(--sidebar-active);
}

.main-content {
    margin-left: 260px;
    padding: 2rem;
}

/* Top Navbar */
.top-navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 0.85rem 2rem;
    margin: -2rem -2rem 2rem -2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
}

/* Cards */
.card-stat {
    background: #ffffff;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.card-stat:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.card-stat .stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.card-stat .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 0.35rem;
    letter-spacing: -0.5px;
}

.table-custom {
    background: #ffffff;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.table-custom th {
    background: #f8fafc;
    color: #475569;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    padding: 0.85rem 1rem;
}

.table-custom td {
    padding: 0.95rem 1rem;
    vertical-align: middle;
    font-size: 0.9rem;
    border-bottom: 1px solid #f1f5f9;
}

@media (max-width: 991.98px) {
    .sidebar {
        margin-left: -260px;
    }
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
}

/* Clickable KPI Cards */
.card-stat.clickable {
    cursor: pointer;
    position: relative;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-stat.clickable:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(37, 99, 235, 0.12);
    border-color: #3b82f6;
}

.card-stat.clickable .detail-hint {
    opacity: 0;
    transition: opacity 0.2s ease;
    font-size: 0.72rem;
    font-weight: 600;
}

.card-stat.clickable:hover .detail-hint {
    opacity: 1;
}

/* Clickable Table Rows */
.table-clickable-row {
    cursor: pointer;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

.table-clickable-row:hover {
    background-color: #f1f5f9 !important;
}

.table-clickable-row:hover td:first-child {
    font-weight: 600;
}

/* Sortable Table Headers */
th.th-sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
    padding-right: 1.5rem !important;
    transition: background-color 0.15s ease, color 0.15s ease;
}

th.th-sortable:hover {
    background-color: #e2e8f0 !important;
    color: #1e293b !important;
}

th.th-sortable::after {
    content: " ⇅";
    font-size: 0.75rem;
    opacity: 0.4;
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
}

th.th-sortable.th-asc::after {
    content: " ▲";
    opacity: 1;
    color: var(--primary-color);
}

th.th-sortable.th-desc::after {
    content: " ▼";
    opacity: 1;
    color: var(--primary-color);
}

/* Modal styling improvements */
.modal-xl {
    max-width: 1140px;
}