:root {
    --bg-color: #0f111a;
    --sidebar-bg: #161925;
    --sidebar-width: 250px;
    --header-bg: rgba(22, 25, 37, 0.8);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #1e293b;
    --card-bg: #1e2130;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    height: 100vh;
    overflow: hidden;
}

/* App Container */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    height: 60px;
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.25rem;
    font-weight: 600;
    gap: 10px;
}

.sidebar-nav {
    padding: 15px 10px;
    flex: 1;
}

.sidebar-nav .nav-link {
    color: var(--text-secondary);
    padding: 10px 15px;
    border-radius: 8px;
    margin-bottom: 5px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-nav .nav-link:hover, .sidebar-nav .nav-link.active {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
}

.sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Top Header */
.top-header {
    height: 60px;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    z-index: 90;
}

.header-search {
    width: 300px;
}

.header-search .input-group-text {
    color: var(--text-secondary);
}

.header-search input {
    color: var(--text-primary);
}

.header-search input:focus {
    box-shadow: none;
    outline: none;
}

/* Content Wrapper */
.content-wrapper {
    flex: 1;
    overflow-y: auto;
}

/* Premium Login Form */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header i {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.form-control {
    background-color: rgba(15, 17, 26, 0.5);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.form-control:focus {
    background-color: rgba(15, 17, 26, 0.8);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

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

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

/* Cards */
.card {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    border-radius: 12px;
}

.card-header {
    background-color: rgba(0,0,0,0.1);
    border-bottom-color: var(--border-color);
}

/* DataTables Overrides for Dark Theme */
table.dataTable {
    color: var(--text-primary) !important;
}

table.dataTable thead th, table.dataTable thead td {
    border-bottom: 1px solid var(--border-color) !important;
    background-color: var(--sidebar-bg);
}

table.dataTable.no-footer {
    border-bottom: 1px solid var(--border-color) !important;
}

.dataTables_wrapper .dataTables_length, 
.dataTables_wrapper .dataTables_filter, 
.dataTables_wrapper .dataTables_info, 
.dataTables_wrapper .dataTables_processing, 
.dataTables_wrapper .dataTables_paginate {
    color: var(--text-primary) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    color: var(--text-primary) !important;
}

.table {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.table-hover>tbody>tr:hover>* {
    color: var(--text-primary);
    background-color: rgba(255,255,255,0.05);
}