/* ========================================
   frps.panel - Minimalist Tech Style
   ======================================== */

:root {
    /* Color System */
    --bg-primary: #0a0f1a;
    --bg-secondary: #111827;
    --bg-tertiary: #1a2332;
    --bg-card: #151d2c;
    --bg-hover: #1e2a3e;
    --bg-input: #0d1421;

    --border-primary: #2a3a52;
    --border-secondary: #3a4d68;
    --border-focus: #00d4aa;

    --text-primary: #e8edf5;
    --text-secondary: #9aa7bb;
    --text-muted: #6b7a94;
    --text-inverse: #0a0f1a;

    --accent-primary: #00d4aa;
    --accent-primary-dim: rgba(0, 212, 170, 0.15);
    --accent-secondary: #00b8d4;
    --accent-warning: #ffb800;
    --accent-danger: #ff4757;
    --accent-info: #3742fa;

    --font-mono: ui-monospace, 'SF Mono', 'Cascadia Mono', 'JetBrains Mono', Consolas, 'Courier New', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(0, 212, 170, 0.2);

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    --header-height: 60px;
    --sidebar-width: 232px;

    /* Viewport height: 使用 dvh（动态视口高度）解决移动端地址栏遮挡，
       旧浏览器回退到 vh；JS 侧可读取 --vh 兜底 */
    --vh: 1vh;
    --dvh: 1dvh;
    --app-vh: var(--dvh);

    /* Spacing Scale */
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --content-max: 1440px;
}

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

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 防止移动端横屏/缩放时字号异常放大 */
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 20%, rgba(0, 212, 170, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 184, 212, 0.03) 0%, transparent 50%),
        linear-gradient(180deg, transparent 0%, var(--bg-primary) 100%);
    pointer-events: none;
    z-index: -1;
    min-height: 100vh;
    min-height: calc(100 * var(--app-vh));
}

/* Grid Pattern Overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: -1;
    opacity: 0.5;
}

/* ========================================
   Layout
   ======================================== */

.app {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-rows: var(--header-height) 1fr;
    min-height: 100vh;
    min-height: calc(100 * var(--app-vh));
}

/* ========================================
   Header
   ======================================== */

.header {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: var(--header-height);
    background: rgba(17, 24, 39, 0.8);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Mobile menu toggle - hidden on desktop */
.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.menu-toggle:hover {
    background: var(--bg-hover);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo svg {
    color: var(--accent-primary);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--accent-primary-dim);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-primary);
    font-family: var(--font-mono);
}

.status-indicator .dot {
    width: 6px;
    height: 6px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.server-stats {
    display: flex;
    gap: 24px;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: #00e8bb;
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--border-secondary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
    padding: 6px 10px;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
    background: #ff6b7a;
    box-shadow: 0 0 20px rgba(255, 71, 87, 0.3);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
}

/* Keyboard focus visibility (accessibility) */
.btn:focus-visible,
.nav-item:focus-visible,
.menu-toggle:focus-visible,
.preset-swatch:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* ========================================
   Sidebar
   ======================================== */

.sidebar {
    display: flex;
    flex-direction: column;
    /* main 横跨后由 flex 分配宽度：固定侧栏宽，禁止收缩 */
    width: var(--sidebar-width);
    flex-shrink: 0;
    height: calc(100vh - var(--header-height));
    height: calc(100 * var(--app-vh) - var(--header-height));
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    position: sticky;
    top: var(--header-height);
    overflow-y: auto;
}

.nav {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-primary-dim);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 212, 170, 0.2);
}

.nav-item svg {
    flex-shrink: 0;
    opacity: 0.8;
}

.sidebar-footer {
    margin-top: auto;
    padding: 16px;
    border-top: 1px solid var(--border-primary);
}

.version-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--text-muted);
}

/* ========================================
   Main Content
   ======================================== */

.main {
    /* 关键：显式占据 grid 第二行并横跨两列。
       缺失时 main 会被自动放置进 232px 侧栏列，导致整个主区域被压扁 */
    grid-column: 1 / -1;
    grid-row: 2;
    display: flex;
    overflow: hidden;
}

.content {
    flex: 1;
    padding: var(--space-5) var(--space-6);
    overflow-y: auto;
    min-width: 0;
    max-width: var(--content-max);
    width: 100%;
    margin: 0 auto;
    scroll-behavior: smooth;
}

.tab-panel {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   Grid System
   ======================================== */

.grid {
    display: grid;
    gap: 16px;
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Cards
   ======================================== */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-secondary);
    box-shadow: var(--shadow-md);
}

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

.card-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-header h3 svg {
    color: var(--text-muted);
}

.card-value {
    padding: 0 20px 16px;
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-trend {
    padding: 0 20px 16px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.table-card .card-header {
    padding-bottom: 0;
    border-bottom: none;
}

/* ----------------------------------------
   Dashboard Stat Cards - accent top bars
   ---------------------------------------- */

.grid-4 > .card {
    position: relative;
}

.grid-4 > .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), transparent 70%);
}

.grid-4 > .card:nth-child(2)::before {
    background: linear-gradient(90deg, var(--accent-secondary), transparent 70%);
}

.grid-4 > .card:nth-child(3)::before {
    background: linear-gradient(90deg, var(--accent-warning), transparent 70%);
}

.grid-4 > .card:nth-child(4)::before {
    background: linear-gradient(90deg, var(--accent-info), transparent 70%);
}

/* Numeric alignment for counters */
.card-value,
.stat-value,
.data-table td.mono {
    font-variant-numeric: tabular-nums;
}

/* ========================================
   Tables
   ======================================== */

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

/* Scrollable table body keeps sticky headers working */
.table-card .table-wrapper {
    max-height: 480px;
    overflow: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-primary);
}

.data-table th {
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.6875rem;
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: var(--bg-hover);
    box-shadow: inset 3px 0 0 var(--accent-primary);
}

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

.data-table td.mono {
    font-family: var(--font-mono);
}

.loading-row td {
    text-align: center;
    color: var(--text-muted);
    padding: 32px !important;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: var(--accent-primary-dim);
    border: 1px solid rgba(0, 212, 170, 0.3);
    border-radius: 100px;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    font-size: 0.6875rem;
    font-weight: 500;
    border-radius: 100px;
}

.status-badge::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-badge.online {
    background: rgba(0, 212, 170, 0.15);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 212, 170, 0.3);
}

.status-badge.online::before {
    background: var(--accent-primary);
    animation: pulse 2s infinite;
}

.status-badge.offline {
    background: rgba(255, 71, 87, 0.15);
    color: var(--accent-danger);
    border: 1px solid rgba(255, 71, 87, 0.3);
}

.status-badge.offline::before {
    background: var(--accent-danger);
}

/* ========================================
   Config Form
   ======================================== */

.config-card {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.config-form {
    padding: 24px;
}

.config-subtitle {
    margin-top: 4px;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.config-section {
    border: none;
    padding: 0;
    margin: 0 0 24px;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    overflow: hidden;
}

.config-section legend {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    font-family: var(--font-sans);
}

.config-section legend svg {
    color: var(--accent-primary);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    padding: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-group input,
.form-group select {
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-primary-dim);
}

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

.input-with-action {
    display: flex;
    gap: 8px;
}

.input-with-action input {
    flex: 1;
}

/* Toggle Switch */
.toggle-wrapper {
    display: flex;
    align-items: center;
}

.toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

.toggle input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: relative;
    width: 48px;
    height: 26px;
    background: var(--border-primary);
    border-radius: 100px;
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.toggle input:checked + .toggle-slider {
    background: var(--accent-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(22px);
}

.toggle input:focus-visible + .toggle-slider {
    box-shadow: 0 0 0 3px var(--accent-primary-dim);
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding-top: 16px;
    border-top: 1px solid var(--border-primary);
    margin-top: 8px;
}

/* Allow Ports Dynamic */
#allowPortsContainer {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.port-range-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.port-range-row .form-group {
    flex: 1;
    margin: 0;
}

.port-range-row .btn {
    height: 42px;
    padding: 0 14px;
}

#addPortRangeBtn {
    align-self: flex-start;
    margin-top: 4px;
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: slideIn var(--transition-normal);
    min-width: 280px;
    max-width: 400px;
}

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

.toast.success { border-left: 3px solid var(--accent-primary); }
.toast.error { border-left: 3px solid var(--accent-danger); }
.toast.warning { border-left: 3px solid var(--accent-warning); }
.toast.info { border-left: 3px solid var(--accent-info); }

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.toast.success .toast-icon { color: var(--accent-primary); }
.toast.error .toast-icon { color: var(--accent-danger); }
.toast.warning .toast-icon { color: var(--accent-warning); }
.toast.info .toast-icon { color: var(--accent-info); }

.toast-message {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--text-primary);
}

.toast-close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.toast-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* ========================================
   Modal
   ======================================== */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 24px;
    animation: fadeIn var(--transition-fast);
}

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

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    animation: scaleIn var(--transition-normal);
}

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

.modal h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.modal p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ========================================
   Scrollbar
   ======================================== */

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-secondary);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 1280px) {
    .header-right {
        gap: 10px;
    }

    .server-stats {
        gap: 14px;
    }
}

@media (max-width: 1024px) {
    .app {
        grid-template-columns: 1fr;
        grid-template-rows: var(--header-height) 1fr;
    }

    .menu-toggle {
        display: inline-flex;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: var(--header-height);
        bottom: 0;
        width: var(--sidebar-width);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        z-index: 300;
        height: calc(100vh - var(--header-height));
        height: calc(100 * var(--app-vh) - var(--header-height));
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    /* Backdrop for mobile drawer */
    .sidebar-backdrop {
        position: fixed;
        inset: var(--header-height) 0 0 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 250;
    }

    .sidebar-backdrop.visible {
        opacity: 1;
        visibility: visible;
    }
}

@media (max-width: 768px) {
    .header {
        padding: 0 16px;
    }

    .server-stats {
        display: none;
    }

    .content {
        padding: 16px;
        /* 刘海屏/折叠屏安全区适配 */
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }

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

    /* iOS Safari 防缩放：输入框 font-size 必须 ≥16px */
    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
    }

    .form-actions {
        flex-direction: column-reverse;
    }

    .form-actions .btn {
        width: 100%;
    }

    .port-range-row {
        flex-direction: column;
        align-items: stretch;
    }

    .port-range-row .btn {
        width: 100%;
    }
}

/* ========================================
   Utility Classes
   ======================================== */

.text-accent { color: var(--accent-primary); }
.text-warning { color: var(--accent-warning); }
.text-danger { color: var(--accent-danger); }
.text-muted { color: var(--text-muted); }
.text-mono { font-family: var(--font-mono); }

.hidden { display: none !important; }

/* ========================================
   User Menu (header)
   ======================================== */

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 16px;
    border-left: 1px solid var(--border-primary);
}

.user-name {
    font-weight: 600;
    font-size: 0.8125rem;
}

.user-role {
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 0.6875rem;
    font-weight: 500;
}

.user-role.role-admin {
    background: rgba(0, 212, 170, 0.15);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 212, 170, 0.3);
}

.user-role.role-user {
    background: rgba(55, 66, 250, 0.15);
    color: #7b86ff;
    border: 1px solid rgba(55, 66, 250, 0.3);
}

/* ========================================
   Login Page
   ======================================== */

.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: calc(100 * var(--app-vh));
    padding: var(--space-4);
}

.login-wrap {
    width: 100%;
    max-width: 400px;
    padding: 24px;
    position: relative;
    z-index: 1;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    box-shadow: var(--shadow-lg), 0 0 48px rgba(0, 212, 170, 0.07);
    animation: riseIn 420ms ease both;
}

@keyframes riseIn {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: none; }
}

.login-logo {
    justify-content: center;
    margin-bottom: 24px;
    font-size: 1.25rem;
}

.login-card h1 {
    text-align: center;
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.login-sub {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin-bottom: 28px;
}

.login-error {
    background: rgba(255, 71, 87, 0.12);
    border: 1px solid rgba(255, 71, 87, 0.35);
    color: var(--accent-danger);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    margin-bottom: 16px;
    text-align: center;
}

.login-card .form-group { margin-bottom: 18px; }
.login-card .btn-block { width: 100%; margin-top: 8px; padding: 12px; font-size: 0.9375rem; }

/* Login / Register Tabs */
.login-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: 100px;
    padding: 4px;
    margin-bottom: 22px;
}

.login-tab {
    flex: 1;
    padding: 8px 0;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    border-radius: 100px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.8125rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.login-tab:hover { color: var(--text-primary); }

.login-tab.active {
    background: var(--accent-primary);
    color: var(--text-inverse);
}

.auth-form { display: none; }
.auth-form.active { display: block; animation: fadeIn var(--transition-normal); }

.login-success {
    background: rgba(0, 212, 170, 0.12);
    border: 1px solid rgba(0, 212, 170, 0.35);
    color: var(--accent-primary);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    margin-bottom: 16px;
    text-align: center;
}

/* ========================================
   Light Theme
   ======================================== */

body.theme-light {
    --bg-primary: #f4f6fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eef1f7;
    --bg-card: #ffffff;
    --bg-hover: #e8edf5;
    --bg-input: #f7f9fc;

    --border-primary: #d9e0ec;
    --border-secondary: #c3cde0;

    --text-primary: #1a2332;
    --text-secondary: #4a5872;
    --text-muted: #8593ab;
    --text-inverse: #ffffff;

    --shadow-sm: 0 1px 3px rgba(20, 40, 80, 0.08);
    --shadow-md: 0 4px 14px rgba(20, 40, 80, 0.1);
    --shadow-lg: 0 10px 30px rgba(20, 40, 80, 0.14);
}

body.theme-light::before,
body.theme-light::after { opacity: 0.35; }

body.theme-light .header {
    background: rgba(255, 255, 255, 0.85);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}

body.theme-light .data-table th {
    background: var(--bg-tertiary);
}

/* ========================================
   Custom Background support
   ======================================== */

body[style*="background-image"] .card,
body[style*="background-image"] .login-card {
    backdrop-filter: blur(14px);
    background: rgba(21, 29, 44, 0.82);
}

body.theme-light[style*="background-image"] .card,
body.theme-light[style*="background-image"] .login-card {
    background: rgba(255, 255, 255, 0.88);
}

/* ========================================
   frpc Generator
   ======================================== */

.toml-output {
    margin: 20px;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    overflow: auto;
    max-height: 420px;
}

.toml-output pre {
    margin: 0;
    padding: 18px;
    background: var(--bg-input);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    line-height: 1.65;
    color: var(--accent-primary);
    white-space: pre;
}

/* ========================================
   Users tab & modal
   ======================================== */

.modal-wide {
    max-width: 520px;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 20px 0 24px;
}

.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 200px;
    overflow-y: auto;
    padding: 12px;
    background: var(--bg-input);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    cursor: pointer;
}

.checkbox-item input[type="checkbox"] {
    accent-color: var(--accent-primary);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.preset-row {
    display: flex;
    gap: 10px;
}

.preset-swatch {
    width: 56px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preset-swatch:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ========================================
   Self-service Tunnels
   ======================================== */

/* Tab panel vertical rhythm (cards no longer touch) */
.tab-panel > * + * {
    margin-top: var(--space-4);
}

.cell-actions {
    display: flex;
    gap: 6px;
    align-items: center;
    white-space: nowrap;
}

.data-table td .cell-actions .btn {
    padding: 4px 10px;
}
/* ============================================
   视觉优化层 v2 — 徽章变体 / 微交互 / 质感
   ============================================ */

/* 协议类型徽章：warn=密钥类(info蓝/online绿已有) */
.status-badge.warn {
    background: rgba(255, 184, 0, 0.14);
    color: var(--accent-warning);
    border: 1px solid rgba(255, 184, 0, 0.35);
}
.status-badge.warn::before { background: var(--accent-warning); }
.status-badge.info {
    background: rgba(55, 66, 250, 0.16);
    color: #7b84ff;
    border: 1px solid rgba(55, 66, 250, 0.38);
}
.status-badge.info::before { background: #7b84ff; }

/* 卡片悬浮微抬升 */
.card {
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.22s cubic-bezier(0.4, 0, 0.2, 1),
                border-color 0.22s ease;
    will-change: transform;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px -12px rgba(0, 0, 0, 0.45),
                0 0 0 1px rgba(0, 212, 170, 0.12);
}

/* 按钮微交互：按压回弹 + 主按钮光泽扫过 */
.btn {
    position: relative;
    overflow: hidden;
    transition: transform 0.14s ease, box-shadow 0.18s ease,
                background 0.18s ease, border-color 0.18s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.28) 50%, transparent 60%);
    transform: translateX(-120%);
    transition: transform 0.6s ease;
    pointer-events: none;
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-primary:hover { box-shadow: 0 6px 20px -6px rgba(0, 212, 170, 0.5); }

/* 表格行悬浮高亮 */
.data-table tbody tr { transition: background 0.15s ease; }
.data-table tbody tr:hover { background: rgba(0, 212, 170, 0.045); }

/* 键盘焦点可见性 */
:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
    border-radius: 6px;
}

/* 输入框聚焦光晕 */
input:focus, select:focus, textarea:focus {
    box-shadow: 0 0 0 3px var(--accent-primary-dim);
    transition: box-shadow 0.18s ease, border-color 0.18s ease;
}

/* 标签页切换淡入动画 */
.tab-panel.active { animation: panelIn 0.28s cubic-bezier(0.25, 0.8, 0.35, 1); }
@keyframes panelIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 侧边导航激活项左侧光条 */
.nav-item { position: relative; transition: background 0.18s ease, color 0.18s ease; }
.nav-item.active::before {
    content: '';
    position: absolute; left: 0; top: 18%; bottom: 18%;
    width: 3px; border-radius: 3px;
    background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary));
    box-shadow: 0 0 10px rgba(0, 212, 170, 0.65);
}

/* 细滚动条 */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.14);
    border-radius: 100px;
    border: 2px solid transparent;
    background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background-color: rgba(0, 212, 170, 0.45); }

/* 弹窗遮罩淡入 + 内容上滑 */
.modal-overlay {
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}
.modal-overlay .modal-content,
.modal-overlay > div[class*="modal"] {
    animation: modalIn 0.24s cubic-bezier(0.25, 0.8, 0.35, 1);
}
@keyframes modalIn {
    from { opacity: 0; transform: translateY(16px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* 状态徽章呼吸更柔和 */
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.45; } }

/* 登录卡片顶部渐变描边 */
.auth-card, .login-card {
    position: relative;
}
.auth-card::before, .login-card::before {
    content: '';
    position: absolute; top: 0; left: 12%; right: 12%; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,212,170,0.75), transparent);
}

/* Toast 出场弹性 */
@keyframes toastIn { from { opacity: 0; transform: translateY(-14px) scale(0.96); } to { opacity: 1; transform: none; } }
.toast, [class*="toast"]:not(body) { animation: toastIn 0.26s cubic-bezier(0.34, 1.56, 0.64, 1); }

/* 减少动效偏好适配 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ============================================
   界面和谐层 v3r — 保守修订：统一宽度节奏，不改变布局模型
   (旧版 flex 化 + 强制拉满导致桌面端错乱，已回退)
   ============================================ */

/* 1) 统一内容宽度：所有标签页同一栏宽（表格与表单不再宽窄跳变）
      布局模型保持 block 流，垂直间距沿用 v2 的逐元素 margin 节奏 */
.tab-panel {
    width: 100%;
    max-width: 1080px;
    margin-inline: auto;
}

/* config-card 维持原始 900px 居中比例（不再强制拉满） */

/* 2) 卡片头部规范：同内距、同分隔线、同标题层级 */
.card-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-primary);
}
.table-card .card-header {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-primary);
}
.card-header h3 { font-size: 0.9375rem; letter-spacing: 0.01em; }
.card-header .config-subtitle { margin-top: 6px; line-height: 1.5; }

/* 3) 表头吸顶由原始样式负责（th 自带 sticky + z-index:10，
       滚动容器为 .table-card .table-wrapper），此处不再覆盖 */

/* 4) 图例分区节奏 */
.config-section { margin-bottom: 20px; }
.config-section:last-child { margin-bottom: 0; }

/* 5) 隐藏工具类兜底（显隐切换依赖） */
.hidden { display: none !important; }

/* 6) 窄屏适配：面板边距收紧 */
@media (max-width: 1140px) {
    .tab-panel { max-width: 100%; }
}
@media (max-width: 768px) {
    .content { padding: var(--space-4); }
    .card-header { padding: 16px; }
    .config-form { padding: 16px; }
}

/* 7) 大屏屏占比优化：宽屏显示器利用更多空间 */
@media (min-width: 1536px) {
    .tab-panel { max-width: 1280px; }
    .config-card { max-width: 1100px; }
}
@media (min-width: 1920px) {
    .tab-panel { max-width: 1400px; }
    .config-card { max-width: 1200px; }
}

/* ============================================
   移动端适配层 v4 — 表格卡片化 / 弹窗全屏 / 网格折叠
   ============================================ */

/* 平板：统计卡 2 列 */
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
}

/* 手机端总控 */
@media (max-width: 768px) {
    /* ---- 数据表格 → 纵向卡片流（利用 data-label）---- */
    .data-table thead { display: none !important; }
    .data-table,
    .data-table tbody { display: block !important; width: 100% !important; }
    .data-table tbody tr {
        display: block !important;
        background: var(--bg-tertiary);
        border: 1px solid var(--border-primary);
        border-radius: 14px;
        padding: 6px 14px;
        margin-bottom: 12px;
    }
    .data-table tbody tr:hover { background: var(--bg-tertiary); }
    .data-table tbody td {
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        text-align: right;
        padding: 9px 0;
        border: none !important;
        border-bottom: 1px dashed rgba(255,255,255,0.06);
        word-break: break-all;
    }
    .data-table tbody td:last-child { border-bottom: none; }
    .data-table tbody td[data-label]::before {
        content: attr(data-label);
        color: var(--text-muted);
        font-size: 0.75rem;
        text-align: left;
        flex-shrink: 0;
        white-space: nowrap;
    }
    /* 提示行（暂无数据等）保持居中朴素样式 */
    .data-table tbody tr.loading-row { padding: 18px; text-align: center; }
    .data-table tbody tr.loading-row td { display: block !important; text-align: center; border: none; }
    .data-table tbody tr.loading-row td::before { content: none !important; }

    /* 表格容器解除高度与横向滚动限制 */
    .table-card .table-wrapper,
    .table-wrapper { max-height: none !important; overflow: visible !important; }

    /* ---- 弹窗底部抽屉化 ---- */
    .modal-overlay { align-items: flex-end !important; padding: 0 !important; }
    .modal-overlay > div {
        width: 100% !important;
        max-width: 100% !important;
        max-height: 88vh !important;
        overflow-y: auto !important;
        border-radius: 18px 18px 0 0 !important;
        margin: 0 !important;
    }

    /* ---- 操作按钮组换行 ---- */
    .cell-actions { flex-wrap: wrap; gap: 6px; }
    .cell-actions .btn { flex: 0 0 auto; }

    /* ---- 卡片值字号收敛 ---- */
    .card-value { font-size: 1.35rem !important; }

    /* ---- 下载卡按钮全宽 ---- */
    #dlGoBtn { width: 100%; }
}

/* 小屏手机：统计卡单列 */
@media (max-width: 430px) {
    .grid-4 { grid-template-columns: 1fr !important; }
}