:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --sidebar-width: 240px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
}

.hidden {
    display: none !important;
}

/* 登录页 */
#login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-container {
    background-color: var(--card-bg);
    padding: 2.5rem;
    border-radius: 1rem;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

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

.login-logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

/* 主布局 */
#main-page {
    display: flex;
    min-height: 100vh;
}

.header {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    right: 0;
    height: 64px;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    z-index: 100;
}

.sidebar {
    width: var(--sidebar-width);
    background-color: var(--card-bg);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    padding: 1.5rem 0;
}

.sidebar ul {
    list-style: none;
}

.nav-link {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-color);
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--primary-color);
}

.content {
    margin-left: var(--sidebar-width);
    margin-top: 64px;
    padding: 2rem;
    width: 100%;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

/* 组件 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.stat-success .stat-value {
    color: var(--success-color);
}

.stat-danger .stat-value {
    color: var(--danger-color);
}

.stat-warning .stat-value {
    color: var(--warning-color);
}

.stat-primary .stat-value {
    color: var(--primary-color);
}

.table-container {
    background-color: var(--card-bg);
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 1rem;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.data-table th,
.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: rgba(0, 0, 0, 0.2);
    font-weight: 600;
    font-size: 0.875rem;
}

.data-table tr:last-child td {
    border-bottom: none;
}

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

.status-active {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-expired {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

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

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

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

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

.btn-block {
    width: 100%;
}

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

.form-group {
    margin-bottom: 1.25rem;
}

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

input,
select,
textarea {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: white;
    padding: 0.625rem;
    font-size: 0.875rem;
    outline: none;
    transition: all 0.2s;
    font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.toolbar input,
.toolbar select {
    min-width: 200px;
    margin-right: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    width: 100%;
    max-width: 500px;
}

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    background: var(--card-bg);
    border-left: 4px solid var(--primary-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    z-index: 2000;
}

.toast.success {
    border-color: var(--success-color);
}

.toast.error {
    border-color: var(--danger-color);
}

code {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: monospace;
}