:root {
    /* Brand Colors */
    --primary: #4361ee;
    --primary-hover: #3a56d4;
    --success: #00ab55;
    --warning: #ffab00;
    --danger: #ff5630;
    --info: #00b8d9;

    /* Light Theme Defaults */
    --bg-body: #f4f6f8;
    --bg-paper: #ffffff;
    --text-primary: #212b36;
    --text-secondary: #637381;
    --border-color: #f1f3f4;
    /* Subtle borders */
    --sidebar-bg: #ffffff;
    --sidebar-text: #637381;
    --sidebar-text-active: #4361ee;
    --sidebar-bg-active: rgba(67, 97, 238, 0.08);
    --shadow-card: 0 0 2px 0 rgba(145, 158, 171, 0.2), 0 12px 24px -4px rgba(145, 158, 171, 0.12);
    --shadow-sm: 0 1px 2px 0 rgba(145, 158, 171, 0.16);

    --font-family: 'Plus Jakarta Sans', 'Outfit', sans-serif;
    --navbar-height: 72px;
    --sidebar-width: 280px;
}

[data-theme="dark"] {
    /* Dark Theme Overrides */
    --bg-body: #161c24;
    --bg-paper: #212b36;
    --text-primary: #ffffff;
    --text-secondary: #919eab;
    --border-color: rgba(145, 158, 171, 0.24);
    --sidebar-bg: #212b36;
    --sidebar-text: #919eab;
    --sidebar-text-active: #ffffff;
    --sidebar-bg-active: #4361ee;
    --shadow-card: 0 0 2px 0 rgba(0, 0, 0, 0.2), 0 12px 24px -4px rgba(0, 0, 0, 0.12);
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-body);
    color: var(--text-primary);
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

/* Typography & Utils */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    color: var(--text-primary);
}

a {
    text-decoration: none;
}

.text-muted {
    color: var(--text-secondary) !important;
}

.backdrop-blur {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* Layout Structure */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transition: all 0.3s;
    left: 0;
    top: 0;
}

.sidebar-header {
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    padding: 0 24px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary);
}

.sidebar-menu {
    padding: 16px;
    flex: 1;
    overflow-y: auto;
}

.menu-category {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 700;
    margin: 24px 0 8px 12px;
    letter-spacing: 0.5px;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--sidebar-text);
    border-radius: 8px;
    font-weight: 500;
    margin-bottom: 4px;
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: rgba(145, 158, 171, 0.08);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--sidebar-bg-active);
    color: var(--sidebar-text-active);
}

.nav-item i {
    width: 24px;
    margin-right: 12px;
    font-size: 1.1rem;
}

/* Main Content Wrapper */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    width: calc(100% - var(--sidebar-width));
}

/* Topbar */
.topbar {
    height: var(--navbar-height);
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px 0 40px;
    /* Extra left padding */
    position: sticky;
    top: 0;
    z-index: 900;
}

[data-theme="dark"] .topbar {
    background-color: rgba(22, 28, 36, 0.8);
}

.search-bar {
    display: flex;
    align-items: center;
    background-color: var(--bg-body);
    padding: 8px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    width: 300px;
    transition: all 0.2s;
}

.search-bar:focus-within {
    background-color: var(--bg-paper);
    box-shadow: 0 0 0 2px var(--primary);
}

.search-bar input {
    border: none;
    background: transparent;
    outline: none;
    margin-left: 8px;
    width: 100%;
    color: var(--text-primary);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.2s;
    border: none;
    background: transparent;
}

.icon-btn:hover {
    background-color: rgba(145, 158, 171, 0.08);
}

/* Content Area */
.content-area {
    padding: 24px 40px;
    min-height: calc(100vh - var(--navbar-height));
    background-color: var(--bg-body);
}

/* Cards & Components */
.card {
    background-color: var(--bg-paper);
    border: none;
    box-shadow: var(--shadow-card);
    border-radius: 12px;
    color: var(--text-primary);
}

.card-header {
    background-color: transparent;
    border-bottom: 1px solid var(--border-color);
    padding: 20px 24px;
}

/* Table overrides for Dark Mode compatibility */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-border-color: var(--border-color);
}

.table th {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-paper);
}

.table td {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-paper);
    color: var(--text-primary);
}

/* Pagination Overrides */
.page-link {
    background-color: var(--bg-paper);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.page-item.disabled .page-link {
    background-color: var(--bg-body);
    border-color: var(--border-color);
}

.page-item.active .page-link {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Responsive Sidebar Toggle */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
        width: 100%;
    }

    .menu-toggle {
        display: block !important;
    }
}

/* DataTables Layout Fixes */
.dataTables_wrapper {
    padding: 0;
}

.dataTables_info {
    padding: 20px 24px !important;
    color: var(--text-secondary) !important;
    font-size: 0.875rem;
}

.dataTables_paginate {
    padding: 20px 24px !important;
    display: flex;
    justify-content: flex-end;
    gap: 4px;
}

.dataTables_filter,
.dataTables_length {
    padding: 20px 24px;
}

.dataTables_wrapper .row {
    margin: 0;
    /* Bootstrap row overrides */
}

/* Pagination Customization */
.page-link {
    border-radius: 6px;
    margin: 0 2px;
    font-size: 0.875rem;
    padding: 6px 12px;
}

.page-item:first-child .page-link,
.page-item:last-child .page-link {
    border-radius: 6px;
}