/* ══════════════════════════════════════════════════════════════════
   admin-components.css — Admin Design System Components
   BEM-style naming | Single source of truth for all admin UI
   ══════════════════════════════════════════════════════════════════ */

/* ═══ 1. FORM SYSTEM ═══ */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 18px; }
.form-row .form-group,
.form-grid .form-group { margin-bottom: 0; }
.form-group:last-child { margin-bottom: 0; }

.form-label {
  display: block;
  font-size: 11px;
  font-weight: var(--font-weight-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

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

.form-input-wrap { position: relative; }

.form-input-icon {
  position: absolute; left: 14px; top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted); font-size: 14px;
  pointer-events: none;
  transition: color var(--transition-fast);
}

.form-input {
  width: 100%; height: 40px;
  background: var(--select-input-bg);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0 14px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 14px;
  outline: none;
  transition: all var(--transition-fast);
  box-sizing: border-box;
}

.form-input.has-icon { padding-left: 42px; }

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

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--focus-bg);
}

.form-input:hover { border-color: var(--border-hover); }

.form-input.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.15);
}

.form-group:has(.form-input:focus) .form-input-icon { color: var(--accent-light); }

.form-input.input-error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.15);
}
.form-input.input-error:focus {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.2);
}

.form-error { font-size: 11px; color: var(--danger); margin-top: 5px; display: none; }
.form-error.show { display: block; }

/* Form select — 完全由 BaseSelect 系统替代（Design System） */

/* Textarea */
.form-textarea {
  width: 100%;
  background: var(--select-input-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 13px;
  outline: none;
  transition: all var(--transition-fast);
  resize: vertical;
}
.form-textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

/* Grid */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; }
.form-grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
.form-grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.form-grid-cols-2 { grid-template-columns: repeat(2, 1fr); gap: 12px; }
.form-grid .col-span-2 { grid-column: span 2; }

/* No spinner */
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type=number] { -moz-appearance: textfield; }

/* Autocomplete wrapper (used by PortSelect) */
.autocomplete-wrapper { position: relative; width: 100%; }

/* Form row */
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 18px; }

/* Readonly input */
.form-input[readonly] {
  background: var(--bg-secondary);
  color: var(--text-muted);
  cursor: not-allowed;
}

/* ═══ 2. BUTTON SYSTEM ═══ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 24px;
  height: 40px;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
}
.btn .fa-spinner { animation: spin 1s linear infinite; }

.btn-primary {
  background: var(--gradient-1);
  color: white;
  box-shadow: 0 2px 8px rgba(37,99,235,0.25);
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37,99,235,0.35);
}
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

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

.btn-ghost {
  background: var(--interactive-hover-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.btn-ghost:hover { background: var(--interactive-active-bg); color: var(--text-primary); border-color: var(--border-hover); }

.btn-danger {
  background: rgba(220,38,38,0.08);
  color: var(--danger);
  border: 1px solid rgba(220,38,38,0.15);
}
.btn-danger:hover { background: rgba(220,38,38,0.12); }

.btn-approve {
  background: rgba(5,150,105,0.08);
  color: var(--success);
  border: 1px solid rgba(5,150,105,0.15);
}
.btn-approve:hover { background: rgba(16,185,129,0.25); }

.btn-auth {
  width: 100%;
  padding: 15px;
  background: var(--gradient-1);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 16px rgba(37,99,235,0.3);
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.btn-auth:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,0.4);
  filter: brightness(1.08);
}
.btn-auth:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.btn-auth .fa-spinner { animation: spin 1s linear infinite; }

.btn-action {
  padding: 6px 10px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-action:hover { border-color: var(--border-hover); color: var(--text-primary); }
.btn-action.danger:hover { border-color: rgba(220,38,38,0.25); color: var(--danger); }

.btn-add-row {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: none;
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
  align-self: flex-start;
  margin-top: 2px;
}
.btn-add-row:hover {
  border-color: var(--accent);
  color: var(--accent-light);
  background: rgba(37,99,235,0.04);
}
.btn-add-row:active { transform: scale(0.97); }

/* ═══ 3. CARD SYSTEM ═══ */
.admin-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  animation: fadeInUp 0.4s ease forwards;
}
.admin-card:nth-child(2) { animation-delay: 0.1s; }

.admin-card-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  gap: 12px; flex-wrap: wrap;
}

.admin-card-title {
  display: flex; align-items: center; gap: 12px;
  font-size: 15px; font-weight: var(--font-weight-semibold);
}
.admin-card-title i { color: var(--accent-light); font-size: 16px; }

.admin-card-body { padding: 24px; }
.admin-card-body.no-padding { padding: 0; }

/* Card actions row */
.card-actions {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
}

/* ── Compact Enterprise Stats Bar ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.stat-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 0 14px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  min-height: 72px;
  max-height: 84px;
}
.stat-icon {
  grid-row: 1 / -1;
  align-self: center;
  font-size: 18px;
  margin-bottom: 0;
  color: var(--accent-light);
  transition: opacity 0.15s ease;
}
.stat-value {
  grid-column: 2;
  grid-row: 1;
  font-size: 22px;
  font-weight: 700;
  font-family: var(--font-mono);
  margin-bottom: 0;
  line-height: 1.3;
}
.stat-label {
  grid-column: 2;
  grid-row: 2;
  font-size: 12px;
  color: var(--text-muted);
  opacity: 0.75;
  line-height: 1.3;
  margin-top: 1px;
}

/* Glass card */
.glass-card {
  position: relative; z-index: 1;
  width: 100%; margin: 20px 0;
  background: rgba(26,29,39,0.65);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.15), 0 0 80px rgba(37,99,235,0.06);
  border-radius: var(--radius-xl);
  padding: 32px;
}
@media (max-width: 520px) { .glass-card { padding: 28px 20px; } }

/* ═══ 4. ALERT SYSTEM ═══ */
.alert {
  padding: 12px 14px; border-radius: var(--radius-md);
  font-size: 13px; margin-bottom: 18px;
  display: none; align-items: center; gap: 10px;
}
.alert.show { display: flex; }
.alert.error { background: rgba(220,38,38,0.08); border: 1px solid rgba(220,38,38,0.15); color: var(--danger); }
.alert.success { background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.2); color: var(--success); }
.alert.info { background: rgba(37,99,235,0.1); border: 1px solid rgba(37,99,235,0.2); color: var(--accent-light); }
.alert.warning { background: rgba(245,158,11,0.1); border: 1px solid rgba(245,158,11,0.2); color: var(--warning); }

/* ═══ 5. LAYOUT SYSTEM ═══ */
.admin-layout { display: flex; min-height: 100vh; }
.admin-main { flex: 1; min-height: 100vh; }
.admin-main.with-sidebar { margin-left: 248px; }
.admin-content { padding: 32px; }
@media (max-width: 768px) {
  .admin-content { padding: 20px; }
  .admin-main.with-sidebar { margin-left: 0; }
}

/* ═══ 6. HEADER SYSTEM ═══ */
.admin-header {
  position: sticky; top: 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  padding: 14px 32px;
  display: flex; align-items: center; justify-content: space-between;
  z-index: var(--z-sticky-header);
  min-height: 68px;
  box-shadow: 0 1px 0 rgba(37,99,235,0.05),
              inset 0 -1px 0 var(--border-subtle);
}
.admin-header-left { display: flex; align-items: center; gap: 16px; }
.admin-header-right { display: flex; align-items: center; gap: 8px; }
.admin-page-title { font-size: 15px; font-weight: var(--font-weight-medium); color: var(--text-secondary); letter-spacing: -0.01em; }

.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 26px; font-weight: var(--font-weight-bold); margin-bottom: 6px; }
.page-header p { font-size: 14px; color: var(--text-muted); }

/* ═══ 7. TABS ═══ */
.admin-tabs {
  display: flex; gap: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 4px; margin-bottom: 24px;
  width: fit-content;
}
.admin-tab {
  padding: 10px 20px; background: transparent; border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted); font-family: var(--font-family);
  font-size: 13px; font-weight: var(--font-weight-medium); cursor: pointer;
  transition: all var(--transition-fast);
}
.admin-tab:hover { color: var(--text-secondary); }
.admin-tab.active { background: var(--accent); color: white; }

/* Tab group divider */
.tab-divider {
  width: 1px; height: 24px;
  background: var(--border-subtle);
  margin: auto 8px;
  flex-shrink: 0;
  opacity: 0.5;
}

/* ═══ 8. TABLE SYSTEM ═══ */
.table-container { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table thead { background: var(--bg-elevated); }
.data-table th {
  padding: 14px 18px; text-align: left;
  font-size: 11px; font-weight: var(--font-weight-semibold);
  color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.5px; border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}
.data-table tbody tr { border-bottom: 1px solid var(--border-subtle); transition: background var(--transition-fast); }
.data-table tbody tr:last-child { border-bottom: none; }
.data-table tbody tr:hover { background: rgba(37,99,235,0.04); }
.data-table td { padding: 14px 18px; font-size: 13px; vertical-align: middle; }

.container-type {
  font-family: var(--font-mono); font-size: 11px; font-weight: var(--font-weight-medium);
  padding: 4px 10px; background: var(--bg-elevated);
  border-radius: var(--radius-sm); color: var(--text-secondary);
}

.table-actions { display: flex; gap: 6px; }

/* ═══ 9. BADGE SYSTEM ═══ */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: var(--radius-sm);
  font-size: 11px; font-weight: var(--font-weight-semibold);
}
.badge-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-active { background: rgba(16,185,129,0.15); color: var(--success); }
.badge-employee { background: rgba(107,117,133,0.15); color: var(--text-muted); }
.badge-uploader { background: rgba(37,99,235,0.15); color: var(--accent-light); }
.badge-admin { background: rgba(168,85,247,0.15); color: #a855f7; }
.badge-super_admin { background: rgba(220,38,38,0.15); color: var(--danger); }

/* ═══ 10. USER CELL ═══ */
.user-cell { display: flex; align-items: center; gap: 12px; }
.user-cell-avatar {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  background: var(--gradient-2);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-weight-semibold); font-size: 13px; flex-shrink: 0;
}
.user-cell-info { min-width: 0; }
.user-cell-name {
  font-weight: var(--font-weight-semibold); margin-bottom: 2px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.user-cell-email { font-size: 11px; color: var(--text-muted); }

/* ═══ 11. CHECKBOX ═══ */
.checkbox-wrapper {
  display: inline-flex; align-items: center; justify-content: center;
  position: relative; width: 18px; height: 18px; cursor: pointer;
}
.checkbox-wrapper input {
  position: absolute; opacity: 0; width: 100%; height: 100%; cursor: pointer;
}
.checkbox-wrapper .checkmark {
  width: 18px; height: 18px; border-radius: 4px;
  border: 1.5px solid var(--border-hover); background: transparent;
  transition: all var(--transition-fast);
  display: flex; align-items: center; justify-content: center;
}
.checkbox-wrapper:hover .checkmark { border-color: var(--accent); }
.checkbox-wrapper input:checked + .checkmark { background: var(--accent); border-color: var(--accent); }
.checkbox-wrapper .checkmark::after {
  content: ''; width: 5px; height: 9px;
  border: solid white; border-width: 0 2px 2px 0;
  transform: rotate(45deg) translateY(-1px); opacity: 0;
}
.checkbox-wrapper input:checked + .checkmark::after { opacity: 1; }

/* ═══ 12. EMPTY STATE ═══ */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-icon { font-size: 48px; color: var(--text-muted); margin-bottom: 16px; }
.empty-title { font-size: 16px; font-weight: var(--font-weight-semibold); margin-bottom: 6px; }
.empty-desc { font-size: 13px; color: var(--text-muted); }

/* ═══ 13. UPLOAD ZONE ═══ */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 48px; text-align: center; cursor: pointer;
  transition: all var(--transition-fast);
}
.upload-zone:hover { border-color: var(--accent); background: rgba(37,99,235,0.04); }
.upload-zone.dragover { border-color: var(--accent); background: rgba(37,99,235,0.08); }
.upload-icon { font-size: 48px; color: var(--text-muted); margin-bottom: 16px; }
.upload-title { font-size: 16px; font-weight: var(--font-weight-semibold); margin-bottom: 6px; }
.upload-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
.upload-hint { font-size: 11px; color: var(--text-muted); }

/* File input hidden */
.file-input-hidden { display: none; }

/* ═══ 14. MODAL SYSTEM ═══ */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--modal-backdrop);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition-normal);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 28px; width: 560px;
  max-width: 95vw; max-height: 90vh;
  overflow-y: auto; position: relative;
  transform: scale(0.96) translateY(8px);
  transition: transform var(--transition-normal);
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 24px;
}
.modal-title { font-size: 18px; font-weight: var(--font-weight-bold); }
.modal-close {
  width: 34px; height: 34px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-muted); font-size: 13px;
  transition: all var(--transition-fast);
}
.modal-close:hover { background: rgba(220,38,38,0.08); color: var(--danger); border-color: rgba(220,38,38,0.15); }

.modal-footer {
  display: flex; gap: 12px; justify-content: flex-end; margin-top: 24px;
}

/* ═══ 15. AUTH PAGES ═══ */
.auth-bg {
  position: fixed; inset: 0; z-index: 0;
  overflow: hidden; background: var(--bg-primary);
}
.auth-bg::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 50% 40%, rgba(37,99,235,0.06), transparent 65%),
    linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-elevated) 50%, var(--bg-primary) 100%);
}
.bg-glow { position: absolute; border-radius: 50%; filter: blur(150px); pointer-events: none; }
.bg-glow-1 {
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(37,99,235,0.03) 0%, transparent 80%);
  top: 50%; right: -200px; transform: translateY(-50%);
}
.bg-glow-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(37,99,235,0.02) 0%, transparent 80%);
  bottom: 10%; right: 20%;
}
.auth-layout { position: relative; z-index: 10; display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 40px 20px; }
.auth-panel { width: 100%; display: flex; align-items: center; justify-content: center; padding: 0; position: relative; }
.auth-header { margin-bottom: 28px; }
.auth-header h1 { font-size: 22px; font-weight: var(--font-weight-bold); margin-bottom: 6px; letter-spacing: -0.3px; }
.auth-header p { font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.auth-footer { text-align: center; margin-top: 16px; }
.auth-footer p { font-size: 13px; color: var(--text-muted); }
.auth-footer a { color: var(--accent-light); text-decoration: none; font-weight: var(--font-weight-medium); }
.auth-footer a:hover { text-decoration: underline; }
.auth-help { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 12px; }
.auth-footer-text { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 24px; line-height: 1.6; }

/* Language switcher */
.lang-switcher {
  position: fixed; top: 24px; right: 24px;
  display: flex; gap: 4px; z-index: var(--z-overlay-dropdown);
  background: var(--interactive-hover-bg);
  border: 1px solid var(--border-subtle);
  border-radius: 8px; padding: 4px;
}
.lang-btn {
  padding: 6px 14px; font-size: 12px; font-weight: var(--font-weight-semibold);
  color: var(--text-muted); background: transparent; border: none;
  border-radius: 6px; cursor: pointer; transition: all 0.2s;
}
.lang-btn:hover { color: var(--text-primary); background: var(--interactive-hover-bg); }
.lang-btn.active { color: var(--text-primary); background: var(--interactive-active-bg); }

/* Password toggle */
.password-toggle {
  position: absolute; right: 14px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; padding: 4px; font-size: 13px;
  transition: color var(--transition-fast);
}
.password-toggle:hover { color: var(--text-secondary); }

/* ═══ 16. SIDEBAR ═══ */
.sidebar {
  width: 248px; background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0; z-index: var(--z-sidebar);
}
.sidebar-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
}
.sidebar .logo { display: flex; align-items: center; justify-content: center; padding: 0; }
.sidebar .logo img {
  width: 85%; height: auto; max-width: 200px;
  object-fit: contain; display: block;
  filter: drop-shadow(0 2px 8px rgba(37,99,235,0.2));
  transition: all var(--transition-normal);
}
.sidebar .logo:hover img { filter: drop-shadow(0 4px 12px rgba(37,99,235,0.3)); }
.sidebar .logo-link { display: block; text-decoration: none; }

.sidebar-nav { flex: 1; padding: 12px 8px; overflow-y: auto; }
.nav-group { margin-bottom: 20px; }
.nav-label {
  font-size: 10px; font-weight: var(--font-weight-semibold);
  color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 1px; padding: 0 12px; margin-bottom: 4px; opacity: 0.7;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; border-radius: var(--radius-sm);
  color: var(--text-secondary); text-decoration: none;
  font-size: 13px; font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast); cursor: pointer;
  margin-bottom: 1px; position: relative;
}
.nav-item::before {
  content: ''; position: absolute; left: 0; top: 50%;
  transform: translateY(-50%); width: 3px; height: 0;
  background: var(--accent); border-radius: 0 2px 2px 0;
  transition: height var(--transition-fast);
}
.nav-item:hover { background: var(--interactive-hover-bg); color: var(--text-primary); }
.nav-item.active { background: rgba(37,99,235,0.08); color: var(--accent-light); }
.nav-item.active::before { height: 20px; }
.nav-item i { width: 18px; text-align: center; font-size: 15px; opacity: 0.8; }

.nav-badge {
  margin-left: auto; min-width: 18px; height: 18px;
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0 5px; border-radius: 9px;
  font-size: 10px; font-weight: var(--font-weight-bold);
  background: var(--warning); color: #000;
  animation: badge-pulse 2s ease-in-out infinite;
}

.sidebar-footer { padding: 12px; border-top: 1px solid var(--border-subtle); }

.user-card {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; background: rgba(15,23,42,0.02);
  border: 1px solid var(--border-subtle); border-radius: var(--radius-sm);
  cursor: pointer; transition: all var(--transition-fast);
  text-decoration: none;
}
.user-card:hover { background: var(--interactive-hover-bg); border-color: var(--border); }

.user-avatar {
  width: 32px; height: 32px; border-radius: var(--radius-sm);
  background: var(--gradient-2);
  display: flex; align-items: center; justify-content: center;
  font-weight: var(--font-weight-semibold); font-size: 12px; flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-name { font-size: 13px; font-weight: var(--font-weight-semibold); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 11px; color: var(--text-muted); }

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
}

/* ═══ 16a. ACCOUNT MENU (Sidebar User Dropdown) ═══ */
.account-menu {
  position: relative;
}

.account-chevron {
  font-size: 11px;
  color: var(--text-muted);
  transition: transform var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
  margin-left: auto;
  padding-left: 4px;
  opacity: 0.5;
}

.user-card:hover .account-chevron {
  opacity: 0.9;
  color: var(--text-secondary);
}

.account-menu.open .account-chevron {
  transform: rotate(180deg);
  opacity: 0.9;
  color: var(--accent-light);
}

.account-dropdown {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 0;
  right: 0;
  min-width: 200px;
  background: var(--dropdown-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 40px rgba(0,0,0,0.08), 0 0 0 1px var(--border-subtle);
  padding: 6px;
  opacity: 0;
  transform: translateY(6px) scale(0.97);
  pointer-events: none;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  z-index: var(--z-overlay-dropdown);
}

.account-menu.open .account-dropdown {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.account-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  font-family: inherit;
  box-sizing: border-box;
}

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

.account-dropdown-item i {
  width: 18px;
  text-align: center;
  font-size: 14px;
  flex-shrink: 0;
  opacity: 0.7;
}

.account-dropdown-item:hover i {
  opacity: 1;
}

.account-dropdown-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 4px 8px;
}

.account-dropdown-danger {
  color: var(--text-secondary);
}

.account-dropdown-danger i {
  color: var(--danger);
  opacity: 0.6;
}

.account-dropdown-danger:hover {
  background: rgba(220,38,38,0.08);
  color: var(--danger);
}

.account-dropdown-danger:hover i {
  color: var(--danger);
  opacity: 1;
}

/* ═══ 17. SURCHARGE ROWS ═══ */
.surcharge-rows,
.feeder-container-rows { display: flex; flex-direction: column; gap: 8px; }
.surcharge-row,
.feeder-container-row {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 6px; border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}
.surcharge-row:hover,
.feeder-container-row:hover { background: var(--bg-hover); }
.surcharge-row .surcharge-amount { flex: 1.2; min-width: 0; }
/* 使 container type 下拉框垂直对齐于 Feeder Port（第1列） */
.feeder-container-row .select-wrapper { flex: none; width: calc(25% - 13.5px); min-width: 120px; }
/* 使价格输入框垂直对齐于 Base Port（第2列） */
.feeder-container-row .feeder-container-amount { flex: none; width: calc(25% - 13.5px); min-width: 80px; }
.surcharge-row .btn-remove-row,
.feeder-container-row .btn-remove-row {
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; padding: 4px 6px; font-size: 14px;
  line-height: 1; opacity: 0.4;
  transition: all var(--transition-fast); flex-shrink: 0;
}
.surcharge-row:hover .btn-remove-row,
.feeder-container-row:hover .btn-remove-row { opacity: 1; }
.surcharge-row .btn-remove-row:hover,
.feeder-container-row .btn-remove-row:hover { color: var(--danger); }

/* ═══ 18. PROGRESS BAR ═══ */
.progress-bar-track { background: var(--border); border-radius: 6px; height: 10px; overflow: hidden; margin-bottom: 8px; }
.progress-bar-fill {
  height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-light));
  width: 0%; transition: width 0.3s; border-radius: 6px;
}
.progress-text { text-align: center; font-size: 13px; color: var(--text-muted); }

/* ═══ 19. SECTION DIVIDER ═══ */
.form-section-title {
  font-size: 10px; font-weight: var(--font-weight-bold);
  color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.8px; margin: 24px 0 14px;
  display: flex; align-items: center; gap: 8px;
}

.form-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

/* ═══ 20. PASSWORD STRENGTH ═══ */
.password-strength { margin-top: 6px; display: none; }
.password-strength.show { display: block; }
.strength-bar { height: 3px; background: var(--border-subtle); border-radius: 2px; overflow: hidden; margin-bottom: 4px; }
.strength-fill { height: 100%; border-radius: 2px; transition: all 0.3s ease; width: 0%; }
.strength-fill.weak { width: 33%; background: var(--danger); }
.strength-fill.medium { width: 66%; background: var(--warning); }
.strength-fill.strong { width: 100%; background: var(--success); }
.strength-label { font-size: 10px; color: var(--text-muted); }
.strength-label.weak { color: var(--danger); }
.strength-label.medium { color: var(--warning); }
.strength-label.strong { color: var(--success); }

/* ═══ 21. SUCCESS STATE ═══ */
.success-state { display: none; text-align: center; padding: 20px 0; }
.success-state.show { display: block; }
.success-icon {
  width: 64px; height: 64px;
  background: rgba(16,185,129,0.1);
  border: 2px solid rgba(16,185,129,0.3);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 24px; color: var(--success); margin: 0 auto 20px;
}
.success-state h2 { font-size: 18px; font-weight: var(--font-weight-bold); margin-bottom: 10px; }
.success-state p { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 24px; }
.success-steps {
  background: var(--select-input-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px; text-align: left; margin-bottom: 20px;
}
.success-steps h3 { font-size: 11px; font-weight: var(--font-weight-semibold); color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px; }
.success-step { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; font-size: 12px; color: var(--text-secondary); }
.success-step:last-child { margin-bottom: 0; }
.step-num {
  flex-shrink: 0; width: 18px; height: 18px;
  background: rgba(37,99,235,0.15); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: var(--font-weight-bold); color: var(--accent-light); margin-top: 1px;
}

/* ═══ 22. PAGINATION ═══ */
.pagination { padding: 16px; display: flex; justify-content: center; gap: 8px; }
.pagination-info { font-size: 12px; color: var(--text-muted); }

/* ═══ 23. TERMS GROUP ═══ */
.terms-group { display: flex; align-items: flex-start; gap: 10px; margin: 0 0 8px; }
.terms-group input[type="checkbox"] { flex-shrink: 0; width: 15px; height: 15px; margin-top: 2px; accent-color: var(--accent); cursor: pointer; }
.terms-group label { font-size: 12px; color: var(--text-muted); line-height: 1.5; cursor: pointer; }
.terms-group label a { color: var(--accent-light); text-decoration: none; }
.terms-group label a:hover { text-decoration: underline; }

/* ═══ 24. WARNING BOX ═══ */
.warning-box { border-radius: var(--radius-md); padding: 12px 16px; margin-bottom: 12px; font-size: 13px; }
.warning-box.purple { background: rgba(168,85,247,0.1); border: 1px solid rgba(168,85,247,0.3); }
.warning-box.yellow { background: rgba(245,158,11,0.12); border: 1px solid rgba(245,158,11,0.3); }

/* ═══ 25. RADIO GROUP ═══ */
.radio-group { display: flex; gap: 12px; flex-wrap: wrap; }
.radio-group label { display: flex; align-items: center; gap: 6px; cursor: pointer; font-size: 13px; }
.radio-group input[type="radio"] { accent-color: var(--accent); }

/* ═══ 26. APPROVAL NOTICE ═══ */
.approval-notice { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; background: rgba(37,99,235,0.08); border: 1px solid rgba(37,99,235,0.2); border-radius: var(--radius-md); margin-bottom: 24px; }
.approval-notice .notice-icon { flex-shrink: 0; width: 28px; height: 28px; background: rgba(37,99,235,0.15); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--accent-light); margin-top: 1px; }
.approval-notice .notice-text { flex: 1; }
.approval-notice .notice-text strong { display: block; font-size: 12px; font-weight: var(--font-weight-semibold); color: var(--accent-light); margin-bottom: 3px; }
.approval-notice .notice-text p { font-size: 11px; color: var(--text-secondary); line-height: 1.5; }

/* ═══ 27. FILTER BAR ═══ */
.filter-bar { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filter-bar .btn { font-size: 11px; padding: 4px 10px; height: auto; }

/* ═══ 28. UTILITY ═══ */
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-gap-8 { display: flex; align-items: center; gap: 8px; }
.flex-gap-12 { display: flex; align-items: center; gap: 12px; }
.flex-wrap { flex-wrap: wrap; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.p-0 { padding: 0; }
.w-full { width: 100%; }

/* ═══ 29. DIVIDER LINES ═══ */
.divider { height: 1px; background: var(--border); margin: 16px 0; }

/* ═══ 30. SPINNER ═══ */
.spinner { display: inline-block; width: 18px; height: 18px; border: 2px solid var(--spinner-border); border-radius: 50%; border-top-color: var(--accent); animation: spin 0.8s linear infinite; vertical-align: middle; }