.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.card {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.card-label {
    color: #6b7280;
    font-size: 14px;
    margin-bottom: 8px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
    color: #111827;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: #f3f4f6;
    color: #111827;
}

a {
    color: #2563eb;
    text-decoration: none;
}

.layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 220px;
    background: #111827;
    color: #fff;
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
}

.brand {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 32px;
}

.nav-link {
    display: block;
    color: #d1d5db;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 6px;
}

.nav-link:hover,
.nav-link.active {
    background: #1f2937;
    color: #fff;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: #9ca3af;
}

.content {
    flex: 1;
    padding: 24px 32px;
}

.page-header h1 {
    margin: 0 0 24px;
    font-size: 24px;
}

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #111827, #1d4ed8);
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: #fff;
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.login-box h1 {
    margin: 0 0 8px;
    font-size: 24px;
}

.login-box p {
    margin: 0 0 24px;
    color: #6b7280;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 14px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn {
    display: inline-block;
    padding: 10px 16px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background: #2563eb;
    color: #fff;
}

.btn-primary:hover {
    background: #1d4ed8;
}

.btn-danger {
    background: #dc2626;
    color: #fff;
}

.btn-secondary {
    background: #e5e7eb;
    color: #111827;
}

.btn-block {
    width: 100%;
}

.toolbar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 16px;
}

.search-input {
    flex: 1;
    min-width: 240px;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
}

.table-wrap {
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    overflow: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    padding: 12px 14px;
    border-bottom: 1px solid #f3f4f6;
    text-align: left;
    white-space: nowrap;
}

th {
    background: #f9fafb;
    font-weight: 600;
    color: #374151;
}

tr:hover td {
    background: #f9fafb;
}

.actions {
    display: flex;
    gap: 8px;
}

.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    font-size: 14px;
}

.pagination-links {
    display: flex;
    gap: 8px;
}

.pagination-links a,
.pagination-links span {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid #e5e7eb;
    background: #fff;
    color: #374151;
}

.pagination-links a:hover {
    border-color: #2563eb;
    color: #2563eb;
}

.pagination-links .current {
    background: #2563eb;
    border-color: #2563eb;
    color: #fff;
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

.alert-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.form-card {
    max-width: 720px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 24px;
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

.mono {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

@media (max-width: 768px) {
    .layout {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .content {
        padding: 16px;
    }
}