:root {
  --bg: #0f1419;
  --panel: #1a2332;
  --border: #2d3a4d;
  --text: #e8eef5;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --accent-dim: #2563c7;
  --danger: #e05252;
  --success: #3ecf8e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1.25rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.topbar h1 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.topbar nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  font-size: 0.9rem;
}

.topbar .user {
  color: var(--muted);
  font-size: 0.85rem;
}

.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout-main {
  display: flex;
  flex: 1;
  min-height: 0;
}

.sidebar {
  width: 280px;
  min-width: 240px;
  max-width: 40vw;
  background: var(--panel);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 0 0 0.75rem;
  flex-shrink: 0;
  transition:
    width 0.22s ease,
    min-width 0.22s ease,
    max-width 0.22s ease,
    opacity 0.18s ease,
    padding 0.22s ease,
    border-color 0.22s ease;
}

.layout-main.sidebar-collapsed .sidebar {
  width: 0;
  min-width: 0;
  max-width: 0;
  padding: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  border-right-color: transparent;
}

.sidebar-toolbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 0.45rem 0.5rem 0.35rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.btn-sidebar-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  padding: 0;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font: inherit;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition:
    color 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}

.btn-sidebar-toggle:hover {
  color: var(--text);
  border-color: var(--muted);
  background: rgba(61, 139, 253, 0.1);
}

.btn-sidebar-expand {
  flex-shrink: 0;
  align-self: stretch;
  width: 2rem;
  min-height: 0;
  margin: 0;
  padding: 0;
  border: none;
  border-right: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font: inherit;
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color 0.15s ease,
    background 0.15s ease,
    border-color 0.15s ease;
}

.btn-sidebar-expand:hover {
  color: var(--text);
  background: rgba(61, 139, 253, 0.08);
}

.btn-sidebar-expand[hidden] {
  display: none;
}

.sidebar-section {
  margin-bottom: 1rem;
}

.sidebar-section h2 {
  margin: 0 0 0.35rem;
  padding: 0 1rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  font-weight: 600;
}

.nav-link {
  display: block;
  padding: 0.45rem 1rem;
  color: var(--text);
  cursor: pointer;
  border-left: 3px solid transparent;
  font-size: 0.9rem;
  text-decoration: none;
}

.nav-link:hover {
  background: rgba(61, 139, 253, 0.08);
  text-decoration: none;
}

.nav-link.active {
  background: rgba(61, 139, 253, 0.15);
  border-left-color: var(--accent);
  text-decoration: none;
}

.content-column {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
}

.service-dashboard {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.5rem 2rem;
  background: linear-gradient(165deg, #0c1016 0%, var(--bg) 42%, #0a0d12 100%);
}

.service-dashboard[hidden] {
  display: none !important;
}

.dash-section {
  margin-bottom: 1.75rem;
}

.dash-section:last-child {
  margin-bottom: 0;
}

.dash-section-title {
  margin: 0 0 0.85rem;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.service-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(232px, 1fr));
  gap: 1rem;
}

.service-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  margin: 0;
  padding: 1.05rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(26, 35, 50, 0.95), rgba(18, 24, 34, 0.98));
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition:
    border-color 0.18s ease,
    box-shadow 0.18s ease,
    transform 0.18s ease;
}

.service-card:hover {
  border-color: rgba(61, 139, 253, 0.5);
  box-shadow:
    0 0 0 1px rgba(61, 139, 253, 0.12),
    0 12px 28px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}

.service-card:active {
  transform: translateY(0);
}

.service-card-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.service-card-group {
  font-size: 0.78rem;
  color: var(--muted);
}

.dash-empty {
  padding: 2rem 1rem;
  text-align: center;
  max-width: 28rem;
  margin: 0 auto;
}

.frame-stack {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}

.frame-stack[hidden] {
  display: none !important;
}

.frame-toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0.9rem;
  background: #0e141c;
  border-bottom: 1px solid var(--border);
}

.frame-toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
}

.btn-frame-back {
  flex-shrink: 0;
  padding: 0.32rem 0.55rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  transition:
    color 0.15s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}

.btn-frame-back:hover {
  color: var(--text);
  border-color: var(--muted);
  background: rgba(61, 139, 253, 0.1);
}

#frame-back-hub {
  color: #9ecbff;
  border-color: rgba(61, 139, 253, 0.45);
  background: rgba(61, 139, 253, 0.12);
  font-weight: 600;
}

#frame-back-hub:hover {
  color: #fff;
  border-color: #3d8bfd;
  background: rgba(61, 139, 253, 0.22);
}

.frame-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.frame-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-shrink: 0;
}

.btn-toolbar-refresh {
  flex-shrink: 0;
  padding: 0.38rem 0.85rem;
  font-size: 0.82rem;
}

.frame-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  min-height: 0;
  background: #0a0e12;
}

.frame-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  background: #0a0e12;
}

/* 登录页 */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem 1.5rem;
}

.login-card h1 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  text-align: center;
}

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

.form-row label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.form-row input,
.form-row select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  border: none;
  font-size: 0.9rem;
  cursor: pointer;
  font-family: inherit;
  text-align: center;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}
.btn-primary:hover {
  background: var(--accent-dim);
}

.btn-secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  color: var(--text);
  border-color: var(--muted);
}

.btn-danger {
  background: rgba(224, 82, 82, 0.2);
  color: var(--danger);
  border: 1px solid var(--danger);
  font-size: 0.8rem;
  padding: 0.25rem 0.5rem;
}

.flash-wrap {
  max-width: 960px;
  margin: 0 auto 1rem;
  padding: 0 1rem;
}

.flash {
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  margin-bottom: 0.35rem;
  font-size: 0.88rem;
}
.flash.error {
  background: rgba(224, 82, 82, 0.15);
  color: #f0a8a8;
}
.flash.success {
  background: rgba(62, 207, 142, 0.12);
  color: var(--success);
}
.flash.info {
  background: rgba(61, 139, 253, 0.12);
  color: #9ec5ff;
}

/* 后台表格 */
.page-wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem 1rem 2rem;
}

.page-wrap h1 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 8px;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

table.data th,
table.data td {
  padding: 0.55rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

table.data th {
  background: var(--panel);
  color: var(--muted);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

table.data tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.inline-form {
  display: inline;
}

.hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

.errors {
  color: var(--danger);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}