/* ========== Baiyin EOS v0.1 Main Styles ========== */
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #F7F8FA;
  color: #1F2937;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 14px; }

:root {
  --primary: #00C2A8;
  --primary-dark: #00A892;
  --primary-light: #E6F9F6;
  --secondary: #4D7CFE;
  --secondary-light: #EEF3FF;
  --bg-dark: #0F1419;
  --bg-dark-hover: #1A2128;
  --bg-page: #F7F8FA;
  --bg-card: #FFFFFF;
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;
  --text-on-dark: #E5E7EB;
  --text-on-dark-dim: #9CA3AF;
  --border: #E5E7EB;
  --border-light: #F3F4F6;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --info: #3B82F6;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --sidebar-w: 240px;
  --topbar-h: 56px;
}

/* ===== App Shell ===== */
.app-shell { display: flex; height: 100vh; overflow: hidden; }
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-dark);
  color: var(--text-on-dark);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-logo {
  height: var(--topbar-h);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid #1A2128;
  font-weight: 600;
  font-size: 15px;
}
.sidebar-logo .logo-mark {
  width: 28px; height: 28px;
  background: var(--primary);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 13px;
}
.sidebar-logo .logo-text { color: #fff; }
.sidebar-logo .logo-version {
  font-size: 11px; color: var(--text-on-dark-dim); font-weight: 400;
}
.nav-section { padding: 12px 0; }
.nav-section-title {
  padding: 8px 20px 4px;
  font-size: 11px;
  color: var(--text-on-dark-dim);
  letter-spacing: 1px;
  text-transform: uppercase;
}
.nav-item {
  position: relative;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  color: var(--text-on-dark-dim);
  font-size: 14px;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}
.nav-item i { width: 16px; text-align: center; font-size: 14px; }
.nav-item:hover { background: var(--bg-dark-hover); color: #fff; }
.nav-item.active {
  background: var(--bg-dark-hover);
  color: var(--primary);
  border-left-color: var(--primary);
}
.nav-item.disabled {
  opacity: 0.35;
  cursor: not-allowed;
}
.nav-item.disabled:hover { background: transparent; color: var(--text-on-dark-dim); }

.main-area { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: var(--topbar-h);
  background: #fff;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  flex-shrink: 0;
}
.topbar-spacer { flex: 1; }
.space-switcher {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  background: #F3F4F6;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
}
.space-switcher:hover { background: #E5E7EB; }
.mode-badge {
  padding: 4px 10px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}
.search-box {
  display: flex; align-items: center; gap: 8px;
  background: #F3F4F6;
  padding: 6px 12px;
  border-radius: 6px;
  width: 240px;
  color: var(--text-secondary);
  font-size: 13px;
}
.search-box input {
  border: none; background: none; outline: none; width: 100%;
}
.icon-btn {
  width: 32px; height: 32px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
}
.icon-btn:hover { background: #F3F4F6; color: var(--text-primary); }
.icon-btn .badge-dot {
  position: absolute; top: 6px; right: 6px;
  width: 8px; height: 8px; background: var(--danger);
  border-radius: 50%;
}
.user-avatar {
  display: flex; align-items: center; gap: 8px;
  padding: 4px 10px 4px 4px;
  border-radius: 20px;
  cursor: pointer;
}
.user-avatar:hover { background: #F3F4F6; }
.user-avatar .ava {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff; font-weight: 600; font-size: 12px;
  display: flex; align-items: center; justify-content: center;
}
.user-avatar .role-name { font-size: 13px; font-weight: 500; }

/* dropdown */
.dropdown {
  position: absolute;
  top: 48px; right: 0;
  min-width: 220px;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  z-index: 1000;
  overflow: hidden;
}
.dropdown-item {
  padding: 10px 14px;
  font-size: 13px;
  cursor: pointer;
  display: flex; align-items: center; gap: 8px;
}
.dropdown-item:hover { background: #F3F4F6; }
.dropdown-item.active { background: var(--primary-light); color: var(--primary-dark); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

.content-area {
  flex: 1; overflow-y: auto; padding: 24px;
}
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.page-title { font-size: 20px; font-weight: 600; }
.page-subtitle { color: var(--text-secondary); font-size: 13px; margin-top: 4px; }

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  padding: 20px;
}
.card-title {
  font-size: 15px; font-weight: 600;
  margin-bottom: 12px;
  display: flex; align-items: center; justify-content: space-between;
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  font-size: 13px; font-weight: 500;
  border-radius: 6px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.15s;
}
.btn:hover:not(:disabled) { background: #F9FAFB; border-color: #D1D5DB; }
.btn-primary {
  background: var(--primary); color: #fff; border-color: var(--primary);
}
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-secondary {
  background: var(--secondary); color: #fff; border-color: var(--secondary);
}
.btn-secondary:hover:not(:disabled) { background: #3D6CF0; }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-xs { padding: 2px 8px; font-size: 11px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Forms */
.form-group { margin-bottom: 14px; }
.form-label { display: block; font-size: 13px; font-weight: 500; margin-bottom: 6px; }
.form-label .required { color: var(--danger); }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: none;
  background: #fff;
  transition: border-color 0.15s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,194,168,0.1);
}
.form-textarea { min-height: 80px; resize: vertical; }
.form-row { display: flex; gap: 12px; }
.form-row > * { flex: 1; }
.checkbox-group {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.checkbox-item {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
}
.checkbox-item input { margin: 0; }
.checkbox-item.checked { border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); }

/* Tables */
.table {
  width: 100%; border-collapse: collapse;
  background: #fff; border-radius: var(--radius); overflow: hidden;
}
.table th, .table td {
  padding: 10px 14px; text-align: left;
  font-size: 13px;
  border-bottom: 1px solid var(--border-light);
}
.table th { background: #F9FAFB; font-weight: 600; color: var(--text-secondary); }
.table tbody tr:hover { background: #F9FAFB; }

/* Tags / chips / status */
.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  border-radius: 4px;
  background: #F3F4F6;
  color: var(--text-secondary);
  margin-right: 4px;
}
.tag-primary { background: var(--primary-light); color: var(--primary-dark); }
.tag-secondary { background: var(--secondary-light); color: var(--secondary); }
.tag-success { background: #ECFDF5; color: var(--success); }
.tag-warning { background: #FFFBEB; color: var(--warning); }
.tag-danger { background: #FEF2F2; color: var(--danger); }
.tag-info { background: #EFF6FF; color: var(--info); }

.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}
.status-online { background: var(--success); }
.status-offline { background: var(--text-tertiary); }
.status-error { background: var(--danger); }

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.kpi-card {
  background: #fff;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
}
.kpi-label { font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.kpi-value { font-size: 24px; font-weight: 600; color: var(--text-primary); }
.kpi-trend { font-size: 11px; margin-top: 4px; }
.kpi-trend.up { color: var(--success); }
.kpi-trend.down { color: var(--danger); }

/* Toggle switch */
.toggle {
  position: relative;
  width: 36px; height: 20px;
  background: #D1D5DB;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.2s;
  display: inline-block;
  vertical-align: middle;
}
.toggle.on { background: var(--primary); }
.toggle::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: left 0.2s;
}
.toggle.on::after { left: 18px; }

/* Grid layouts */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* Login page */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #0F1419 0%, #1A2D3D 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 40px 20px;
}
.login-container {
  width: 100%;
  max-width: 980px;
  background: rgba(255,255,255,0.04);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 16px;
  padding: 40px;
}
.login-header { text-align: center; color: #fff; margin-bottom: 32px; }
.login-header h1 { font-size: 28px; font-weight: 600; margin-bottom: 8px; }
.login-header h1 span { color: var(--primary); }
.login-header p { color: rgba(255,255,255,0.6); font-size: 14px; }
.role-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.role-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 24px;
  border-radius: 12px;
  cursor: pointer;
  color: #fff;
  transition: all 0.2s;
  text-align: center;
}
.role-card:hover {
  background: rgba(0,194,168,0.1);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.role-card .role-icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: rgba(0,194,168,0.2);
  color: var(--primary);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 12px;
  font-size: 24px;
}
.role-card .role-title { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.role-card .role-desc { font-size: 12px; color: rgba(255,255,255,0.5); line-height: 1.6; }

/* Empty state */
.empty {
  padding: 60px 20px;
  text-align: center;
  color: var(--text-secondary);
}
.empty i { font-size: 36px; color: var(--text-tertiary); margin-bottom: 12px; display: block; }

/* Tabs */
.tabs {
  display: flex; gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.tab-item {
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab-item.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 500; }
.tab-item:hover { color: var(--text-primary); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #D1D5DB; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9CA3AF; }
.sidebar::-webkit-scrollbar-thumb { background: #2A3138; }

/* Permission disabled */
.perm-disabled {
  opacity: 0.5;
  pointer-events: none;
  position: relative;
}
[data-perm-tooltip]:hover::after {
  content: attr(data-perm-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: #1F2937;
  color: #fff;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  white-space: nowrap;
  z-index: 100;
}