/* ============================================
   DoraDoor Admin - Dark Theme Styles
   ============================================ */

/* CSS Variables */
:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --bg-card-hover: #1a4a7a;
    --bg-input: #0d2847;
    --accent-red: #e94560;
    --accent-green: #53d769;
    --accent-blue: #4fc3f7;
    --accent-yellow: #ffd54f;
    --accent-orange: #ff9800;
    --accent-purple: #bb86fc;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --text-muted: #6c6c80;
    --border-color: #2a2a4a;
    --sidebar-width: 240px;
    --border-radius: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ============================================
   Login Page
   ============================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 400px;
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo .logo-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.login-logo h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 6px;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-error {
    background: rgba(233, 69, 96, 0.1);
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 13px;
    display: none;
}

.login-error.active {
    display: block;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.login-form input {
    width: 100%;
    padding: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.login-form input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.login-form button {
    width: 100%;
    padding: 12px;
    background: var(--accent-blue);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.login-form button:hover {
    background: #3ab0e2;
}

/* Login Button (class-based) */
.btn-login {
    width: 100%;
    padding: 12px;
    background: var(--accent-blue);
    border: none;
    border-radius: 6px;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-login:hover {
    background: #3ab0e2;
}

/* Logout Button */
.btn-logout {
    width: 100%;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-logout:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-brand {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    letter-spacing: 1px;
}

.sidebar-title {
    font-size: 18px;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    margin: 6px 0 0 0;
}

.sidebar-version {
    font-size: 12px;
    color: rgba(255,255,255,0.45);
    margin-top: 4px;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo .logo-icon {
    font-size: 28px;
}

.sidebar-logo h2 {
    font-size: 16px;
    font-weight: 600;
}

.sidebar-nav {
    padding: 16px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: rgba(79, 195, 247, 0.08);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(79, 195, 247, 0.12);
    color: var(--accent-blue);
    border-left-color: var(--accent-blue);
}

.nav-item .nav-icon {
    font-size: 18px;
    width: 24px;
    text-align: center;
}

.nav-item .nav-text {
    font-size: 14px;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

.user-name {
    font-size: 13px;
    font-weight: 500;
}

.logout-btn {
    width: 100%;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
}

.logout-btn:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    min-height: 100vh;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.page-header h2 {
    font-size: 20px;
    font-weight: 600;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 101;
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 20px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

/* ============================================
   Cards & Stats
   ============================================ */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 20px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.stat-card .stat-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.stat-card .stat-icon {
    font-size: 18px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

.stat-card .stat-icon.blue { background: rgba(59,130,246,0.15); }
.stat-card .stat-icon.green { background: rgba(34,197,94,0.15); }
.stat-card .stat-icon.red { background: rgba(239,68,68,0.15); }
.stat-card .stat-icon.yellow { background: rgba(234,179,8,0.15); }

.stat-card .stat-label {
    font-size: 15px;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0;
    font-weight: 600;
    line-height: 32px;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.stat-card .stat-change {
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-card .stat-change.up {
    color: var(--accent-green);
}

.stat-card .stat-change.down {
    color: var(--accent-red);
}

/* Content Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

/* ============================================
   Charts
   ============================================ */
.charts-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.chart-container {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 20px;
}

.chart-container h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.chart-wrapper {
    position: relative;
    height: 300px;
}

/* ============================================
   Tables
   ============================================ */
.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.table-header h3 {
    font-size: 16px;
    font-weight: 600;
}

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

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

thead th {
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

tbody td {
    padding: 11px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

tbody tr:nth-child(even) {
    background: rgba(0, 0, 0, 0.08);
}

tbody tr:hover {
    background: rgba(79, 195, 247, 0.06);
}

tbody tr:last-child td {
    border-bottom: none;
}

.table-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 14px;
}

.table-empty .empty-icon {
    font-size: 36px;
    margin-bottom: 12px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    cursor: pointer;
    transition: var(--transition);
}

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

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

.btn-primary:hover {
    background: #3ab0e2;
    border-color: #3ab0e2;
    color: #fff;
}

.btn-success {
    background: var(--accent-green);
    border-color: var(--accent-green);
    color: #fff;
}

.btn-success:hover {
    background: #4bc55d;
    border-color: #4bc55d;
}

.btn-danger {
    background: var(--accent-red);
    border-color: var(--accent-red);
    color: #fff;
}

.btn-danger:hover {
    background: #d63d54;
    border-color: #d63d54;
}

.btn-outline {
    background: transparent;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.btn-icon.danger:hover {
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* ============================================
   Badges
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: rgba(83, 215, 105, 0.15);
    color: var(--accent-green);
}

.badge-danger {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent-red);
}

.badge-warning {
    background: rgba(255, 213, 79, 0.15);
    color: var(--accent-yellow);
}

.badge-info {
    background: rgba(79, 195, 247, 0.15);
    color: var(--accent-blue);
}

.badge-blue {
    background: rgba(79, 195, 247, 0.15);
    color: var(--accent-blue);
}

.badge-purple {
    background: rgba(171, 130, 255, 0.15);
    color: #ab82ff;
}

.badge-secondary {
    background: rgba(158, 158, 158, 0.15);
    color: #9e9e9e;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}
.switch input { opacity: 0; width: 0; height: 0; }
.switch .slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-tertiary, #ccc);
    transition: .3s;
    border-radius: 24px;
}
.switch .slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}
.switch input:checked + .slider {
    background-color: var(--accent-green, #53d769);
}
.switch input:checked + .slider:before {
    transform: translateX(20px);
}

.badge-green {
    background: rgba(83, 215, 105, 0.15);
    color: var(--accent-green);
}

.badge-red {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent-red);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 520px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent-red);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Forms
   ============================================ */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group label .required {
    color: var(--accent-red);
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: 9px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 6px;
    font-size: 13px;
    animation: toastIn 0.3s ease;
    max-width: 320px;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toast-success {
    background: rgba(83, 215, 105, 0.15);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
}

.toast-error {
    background: rgba(233, 69, 96, 0.15);
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
}

.toast-warning {
    background: rgba(255, 213, 79, 0.15);
    border: 1px solid var(--accent-yellow);
    color: var(--accent-yellow);
}

.toast-info {
    background: rgba(79, 195, 247, 0.15);
    border: 1px solid var(--accent-blue);
    color: var(--accent-blue);
}

.toast-icon {
    font-size: 16px;
    flex-shrink: 0;
}

/* ============================================
   Pagination
   ============================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    font-size: 12px;
    color: var(--text-secondary);
}

.pagination-buttons {
    display: flex;
    gap: 4px;
}

.pagination-buttons .page-btn {
    padding: 5px 10px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    transition: var(--transition);
}

.pagination-buttons .page-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.pagination-buttons .page-btn.active {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: #fff;
}

.pagination-buttons .page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ============================================
   System Status
   ============================================ */
.status-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.status-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: 20px;
    border: 1px solid var(--border-color);
}

.status-card h4 {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.status-card .status-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-dot.online {
    background: var(--accent-green);
    box-shadow: 0 0 6px var(--accent-green);
}

.status-dot.offline {
    background: var(--accent-red);
    box-shadow: 0 0 6px var(--accent-red);
}

.pool-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.pool-stat-item {
    background: rgba(0, 0, 0, 0.15);
    padding: 12px;
    border-radius: 6px;
}

.pool-stat-item .pool-label {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.pool-stat-item .pool-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Filter Bar
   ============================================ */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-bar select,
.filter-bar input {
    padding: 7px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
}

.filter-bar select:focus,
.filter-bar input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* ============================================
   Key Display (API Key)
   ============================================ */
.key-display {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--accent-green);
    border-radius: 6px;
    padding: 14px;
    margin: 12px 0;
    word-break: break-all;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    color: var(--accent-green);
}

.key-warning {
    font-size: 12px;
    color: var(--accent-yellow);
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ============================================
   Confirm Dialog
   ============================================ */
.confirm-content {
    text-align: center;
    padding: 10px 0;
}

.confirm-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.confirm-text {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.confirm-sub {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ============================================
   Change Password
   ============================================ */
.change-password-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   Loading Spinner
   ============================================ */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .charts-row {
        grid-template-columns: 1fr;
    }

    .status-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open, .sidebar.force-show {
        transform: translateX(0);
    }

    .sidebar-overlay.active {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: 60px 16px 16px;
    }

    .stat-cards {
        grid-template-columns: 1fr 1fr;
    }

    .status-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal {
        max-width: calc(100% - 32px);
        margin: 16px;
    }

    .table-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .stat-cards {
        grid-template-columns: 1fr;
    }

    html {
        font-size: 13px;
    }
}

/* ============================================
   Settings Page
   ============================================ */
.settings-container {
    max-width: 800px;
}

.settings-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 20px;
}

.settings-section h3 {
    margin: 0 0 8px 0;
    font-size: 16px;
    font-weight: 600;
}

.settings-desc {
    color: var(--text-secondary);
    font-size: 13px;
    margin: 0 0 16px 0;
}

.settings-actions {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-hint {
    display: block;
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 4px;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-success { color: var(--accent-green); }
.text-danger { color: var(--accent-red); }
.text-warning { color: var(--accent-yellow); }
.text-info { color: var(--accent-blue); }
.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.mt-24 { margin-top: 24px; }
.mb-24 { margin-bottom: 24px; }
.hidden { display: none !important; }

/* ============================================
   Chat Messages - Markdown Support
   ============================================ */
.message-wrapper {
    display: flex;
    margin-bottom: 16px;
}

.message-wrapper.user {
    justify-content: flex-end;
}

.message-wrapper.assistant {
    justify-content: flex-start;
}

.user-message {
    max-width: 80%;
    background: var(--accent-blue);
    color: #fff;
    padding: 12px 16px;
    border-radius: 16px 16px 4px 16px;
    font-size: 14px;
    line-height: 1.5;
}

.user-message .message-content {
    white-space: pre-wrap;
    word-break: break-word;
}

.assistant-message {
    max-width: 85%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 16px 20px;
    border-radius: 16px 16px 16px 4px;
    font-size: 14px;
    line-height: 1.6;
}

.assistant-message .message-content {
    color: var(--text-primary);
}

/* Markdown Styles */
.assistant-message .message-content h1,
.assistant-message .message-content h2,
.assistant-message .message-content h3,
.assistant-message .message-content h4 {
    margin: 16px 0 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.assistant-message .message-content h1 { font-size: 1.5em; }
.assistant-message .message-content h2 { font-size: 1.3em; }
.assistant-message .message-content h3 { font-size: 1.15em; }
.assistant-message .message-content h4 { font-size: 1em; }

.assistant-message .message-content p {
    margin: 8px 0;
}

.assistant-message .message-content ul,
.assistant-message .message-content ol {
    margin: 8px 0;
    padding-left: 24px;
}

.assistant-message .message-content li {
    margin: 4px 0;
}

.assistant-message .message-content code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
}

.assistant-message .message-content .code-block-wrapper {
    position: relative;
    margin: 12px 0;
    border-radius: 8px;
    overflow: hidden;
    background: #f6f8fa;
    border: 1px solid #d0d7de;
}

.assistant-message .message-content .code-block-wrapper .code-lang {
    position: absolute;
    top: 0;
    right: 60px;
    padding: 4px 10px;
    font-size: 11px;
    color: #6a737d;
    background: #eff1f3;
    border-radius: 0 0 0 6px;
    font-family: 'Consolas', 'Monaco', monospace;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 1;
}

.assistant-message .message-content .code-copy-btn {
    position: absolute;
    top: 6px;
    right: 8px;
    background: #eff1f3;
    border: 1px solid #d0d7de;
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    z-index: 2;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
}

.assistant-message .message-content .code-block-wrapper:hover .code-copy-btn {
    opacity: 1;
}

.assistant-message .message-content .code-copy-btn:hover {
    background: #d0d7de;
}

.assistant-message .message-content .code-block-wrapper pre {
    background: #f6f8fa;
    border-radius: 0;
    padding: 16px;
    padding-top: 28px;
    margin: 0;
    overflow-x: auto;
}

.assistant-message .message-content .code-block-wrapper pre code {
    background: transparent;
    padding: 0;
    font-size: 13px;
    line-height: 1.5;
    color: #24292e;
}

.assistant-message .message-content pre {
    background: #f6f8fa;
    border-radius: 8px;
    padding: 16px;
    margin: 12px 0;
    overflow-x: auto;
    border: 1px solid #d0d7de;
}

.assistant-message .message-content pre code {
    background: transparent;
    padding: 0;
    font-size: 13px;
    line-height: 1.5;
    color: #24292e;
}

.assistant-message .message-content blockquote {
    border-left: 3px solid var(--accent-blue);
    margin: 12px 0;
    padding-left: 16px;
    color: var(--text-secondary);
}

.assistant-message .message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 12px 0;
}

.assistant-message .message-content th,
.assistant-message .message-content td {
    border: 1px solid var(--border-color);
    padding: 8px 12px;
    text-align: left;
}

.assistant-message .message-content th {
    background: rgba(0, 0, 0, 0.2);
    font-weight: 600;
}

.assistant-message .message-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 16px 0;
}

.assistant-message .message-content a {
    color: var(--accent-blue);
    text-decoration: none;
}

.assistant-message .message-content a:hover {
    text-decoration: underline;
}

/* Thinking Block Styles */
.thinking-block {
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.thinking-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(79, 195, 247, 0.1);
    cursor: pointer;
    font-size: 12px;
    color: var(--text-secondary);
}

.thinking-header:hover {
    background: rgba(79, 195, 247, 0.15);
}

.thinking-content {
    padding: 12px;
    background: rgba(79, 195, 247, 0.05);
    font-size: 13px;
    color: var(--text-secondary);
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    cursor: pointer;
}
.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.toggle-slider {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-tertiary, #333);
    border-radius: 24px;
    transition: 0.3s;
}
.toggle-slider::before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    border-radius: 50%;
    transition: 0.3s;
}
.toggle-switch input:checked + .toggle-slider {
    background-color: var(--accent-green, #27ae60);
}
.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
}