:root {
  --bg: #0B0D10;
  --surface: #161B22;
  --text: #E6EDF3;
  --text-secondary: #8B949E;
  --primary: #6366F1;
  --primary-hover: #818CF8;
  --primary-text: #FFFFFF;
  --border: #30363D;
  --success: #3FB950;
  --warning: #D29922;
  --danger: #F85149;
  --bay-source: #2563EB;
  --bay-target: #0891B2;
  --bay-empty: #8C959F;
  --font: "Microsoft YaHei UI", "Segoe UI", sans-serif;
  --icon-font: "Material Icons";
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.25);
}

@font-face {
  font-family: "Material Icons";
  src: url("/icons.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
  font-display: block;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: var(--font);
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  overflow: hidden;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

.icon {
  font-family: var(--icon-font);
  font-weight: normal;
  font-style: normal;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
}

.icon-sm { font-size: 14px; }
.icon-lg { font-size: 22px; }
.icon-workflow::before { content: "\e85d"; }
.icon-tools::before { content: "\e869"; }
.icon-settings::before { content: "\e8b8"; }
.icon-refresh::before { content: "\e5d5"; }
.icon-add::before { content: "\e145"; }
.icon-delete::before { content: "\e872"; }
.icon-edit::before { content: "\e3c9"; }
.icon-back::before { content: "\e5c4"; }
.icon-run::before { content: "\e037"; }
.icon-stop::before { content: "\e047"; }
.icon-check::before { content: "\e5ca"; }
.icon-close::before { content: "\e5cd"; }
.icon-copy::before { content: "\e14d"; }
.icon-clear::before { content: "\e0b8"; }
.icon-log::before { content: "\e616"; }
.icon-info::before { content: "\e88e"; }
.icon-help::before { content: "\e887"; }
.icon-more::before { content: "\e5d3"; }
.icon-folder::before { content: "\e2c7"; }
.icon-system::before { content: "\e1ae"; }
.icon-dark::before { content: "\e51c"; }
.icon-light::before { content: "\e518"; }
.icon-arrow-down::before { content: "\e313"; }
.icon-arrow-forward::before { content: "\e5c8"; }
.icon-disk::before { content: "\e8b0"; }
.icon-user::before { content: "\e7fd"; }
.icon-notification::before { content: "\e7f4"; }
.icon-home::before { content: "\e88a"; }
.icon-search::before { content: "\e8b6"; }

.app {
  display: grid;
  grid-template-rows: 34px 1fr 26px;
  grid-template-columns: 54px 1fr;
  grid-template-areas:
    "titlebar titlebar"
    "sidebar main"
    "status status";
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}

/* Titlebar */
.titlebar {
  grid-area: titlebar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  -webkit-app-region: drag;
  user-select: none;
}

.titlebar-drag {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 12px;
}

.titlebar-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  -webkit-app-region: no-drag;
}

.titlebar-actions button {
  width: 36px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: background 0.15s, color 0.15s;
}

.titlebar-actions button:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

/* Sidebar */
.sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px 0;
  background: var(--surface);
  border-right: 1px solid var(--border);
}

.nav-item {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 20px;
  position: relative;
  transition: 0.15s;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.nav-item.active {
  background: rgba(99, 102, 241, 0.16);
  color: var(--primary);
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--primary);
}

/* Main */
.main {
  grid-area: main;
  display: flex;
  min-height: 0;
  overflow: hidden;
  background: var(--bg);
}

.content {
  flex: 1;
  padding: 16px;
  min-width: 0;
  overflow-y: auto;
  overflow-y: overlay;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.page-title {
  font-size: 16px;
  font-weight: 700;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  transition: 0.15s;
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-sm {
  padding: 5px 10px;
  font-size: 11px;
}

/* Status bar */
.statusbar {
  grid-area: statusbar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-secondary);
}

/* Cards / panels */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  margin-bottom: 14px;
}

.panel-title {
  font-size: 13px;
  font-weight: 700;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Bay grid */
.bay-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 10px;
}

.bay {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: 0.15s;
}

.bay:hover {
  background: rgba(255, 255, 255, 0.06);
}

.bay .label {
  font-size: 11px;
  color: var(--text-secondary);
}

.bay .size {
  font-size: 12px;
  font-weight: 600;
}

.bay.source {
  border-color: var(--bay-source);
  background: rgba(37, 99, 235, 0.12);
}

.bay.target {
  border-color: var(--bay-target);
  background: rgba(8, 145, 178, 0.12);
}

.bay.empty {
  opacity: 0.6;
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.data-table th,
.data-table td {
  padding: 9px 10px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  color: var(--text-secondary);
  font-weight: 600;
  background: rgba(0, 0, 0, 0.15);
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.badge-success { background: rgba(63, 185, 80, 0.15); color: var(--success); }
.badge-warning { background: rgba(210, 153, 34, 0.15); color: var(--warning); }
.badge-danger { background: rgba(248, 81, 73, 0.15); color: var(--danger); }
.badge-primary { background: rgba(99, 102, 241, 0.15); color: var(--primary); }

/* Workflow list */
.workflow-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.workflow-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  transition: 0.15s;
}

.workflow-item:hover {
  background: rgba(255, 255, 255, 0.06);
}

.workflow-info strong {
  font-size: 13px;
}

.workflow-info span {
  font-size: 11px;
  color: var(--text-secondary);
}

.workflow-actions {
  display: flex;
  gap: 4px;
}

.icon-btn {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.icon-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

/* Tools grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

.tool-card {
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  text-align: center;
  transition: 0.15s;
}

.tool-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--primary);
}

.tool-card .icon {
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 10px;
}

.tool-card h4 {
  margin: 0 0 4px;
  font-size: 13px;
}

.tool-card p {
  margin: 0;
  font-size: 11px;
  color: var(--text-secondary);
}

/* Settings */
.settings-group {
  margin-bottom: 20px;
}

.settings-group h3 {
  font-size: 13px;
  margin: 0 0 12px;
  color: var(--primary);
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.setting-row label {
  color: var(--text-secondary);
}

/* Logs */
.log-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
}

.log-item {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.2);
  border-left: 3px solid var(--text-secondary);
}

.log-item.info { border-left-color: var(--primary); }
.log-item.success { border-left-color: var(--success); }
.log-item.warning { border-left-color: var(--warning); }
.log-item.error { border-left-color: var(--danger); }

.log-time {
  color: var(--text-secondary);
  margin-right: 8px;
}

/* Split layout for main + right panel */
.split-main {
  flex: 1;
  min-width: 0;
  padding: 16px;
  overflow-y: auto;
  overflow-y: overlay;
}

.split-side {
  width: 260px;
  border-left: 1px solid var(--border);
  background: var(--surface);
  padding: 14px;
  overflow-y: auto;
  overflow-y: overlay;
}

@media (max-width: 760px) {
  .app {
    grid-template-columns: 44px 1fr;
  }
  .sidebar {
    width: 44px;
  }
  .split-side {
    display: none;
  }
}