:root {
    --primary-blue: #1E3A8A;
    --secondary-blue: #2563EB;
    --accent-red: #CE1126;
    --bg-gray: #F8FAFC;
    --text-dark: #1E293B;
    --text-light: #64748B;
    --white: #FFFFFF;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --sidebar-width: 250px;
    --header-height: 64px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-gray);
    color: var(--text-dark);
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--primary-blue);
    color: var(--white);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 700;
    font-size: 1.1rem;
    padding: 0 1rem;
    text-align: center;
}

.sidebar-menu {
    flex: 1;
    padding: 1rem 0;
    list-style: none;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all 0.2s;
    border-left: 4px solid transparent;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background-color: rgba(0, 0, 0, 0.2);
    color: var(--white);
    border-left-color: var(--accent-red);
}

.sidebar-menu i {
    width: 24px;
    margin-right: 0.75rem;
    text-align: center;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.header {
    height: var(--header-height);
    background-color: var(--white);
    border-bottom: 1px solid #E2E8F0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}

.page-content {
    padding: 2rem;
    flex: 1;
    overflow-y: auto;
}

/* Components */
.card {
    background: var(--white);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    border: 1px solid #E2E8F0;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #E2E8F0;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-body {
    padding: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    border: 1px solid #E2E8F0;
    display: flex;
    align-items: center;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-right: 1rem;
}

.bg-blue-light {
    background-color: #DBEAFE;
    color: var(--primary-blue);
}

.bg-green-light {
    background-color: #D1FAE5;
    color: var(--success);
}

.bg-yellow-light {
    background-color: #FEF3C7;
    color: var(--warning);
}

.bg-red-light {
    background-color: #FEE2E2;
    color: var(--danger);
}

.stat-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.stat-info p {
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Utilities */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
}

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

.btn-success {
    background-color: var(--success);
    color: var(--white);
}

.btn-danger {
    background-color: var(--danger);
    color: var(--white);
}

.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid #E2E8F0;
}

.table th {
    background-color: #F8FAFC;
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tr:hover {
    background-color: #F8FAFC;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-blue {
    background-color: #DBEAFE;
    color: var(--primary-blue);
}

.badge-green {
    background-color: #D1FAE5;
    color: var(--success);
}

.badge-yellow {
    background-color: #FEF3C7;
    color: var(--warning);
}

.badge-red {
    background-color: #FEE2E2;
    color: var(--danger);
}

/* Forms (revisited) */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-control,
.form-select {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #CBD5E1;
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.form-control:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

/* User Menu */
.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.user-info {
    text-align: right;
}

.user-name {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-role {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
}