/* ============================================================
   乐退俱乐部 - 管理后台样式
   ============================================================ */

:root {
  --admin-primary: #e8734a;
  --admin-primary-hover: #d4602f;
  --admin-bg: #f5f6fa;
  --admin-sidebar: #1e293b;
  --admin-sidebar-hover: #334155;
  --admin-card: #ffffff;
  --admin-text: #334155;
  --admin-text-light: #94a3b8;
  --admin-border: #e2e8f0;
  --admin-success: #22c55e;
  --admin-warning: #f59e0b;
  --admin-danger: #ef4444;
  --admin-info: #3b82f6;
  --admin-radius: 8px;
  --admin-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  background: var(--admin-bg);
  color: var(--admin-text);
  line-height: 1.6;
}

/* ── Login Page ── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
  padding: 20px;
}

.login-box {
  background: var(--admin-card);
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo svg { display: inline-block; }

.login-logo h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--admin-text);
  margin-top: 12px;
}

.login-logo p {
  font-size: 13px;
  color: var(--admin-text-light);
  margin-top: 4px;
}

.login-field {
  margin-bottom: 20px;
}

.login-field label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--admin-text);
  margin-bottom: 6px;
}

.login-field input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  font-size: 15px;
  transition: border-color .2s;
  outline: none;
}

.login-field input:focus {
  border-color: var(--admin-primary);
  box-shadow: 0 0 0 3px rgba(232,115,74,.15);
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: var(--admin-primary);
  color: #fff;
  border: none;
  border-radius: var(--admin-radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}

.login-btn:hover { background: var(--admin-primary-hover); }
.login-btn:disabled { opacity: .6; cursor: not-allowed; }

.login-error {
  background: #fef2f2;
  color: var(--admin-danger);
  padding: 10px 14px;
  border-radius: var(--admin-radius);
  font-size: 14px;
  margin-bottom: 16px;
  display: none;
}

.login-error.show { display: block; }

.login-hint {
  text-align: center;
  margin-top: 24px;
  font-size: 12px;
  color: var(--admin-text-light);
}

/* ── Admin Layout ── */
.admin-app { display: none; min-height: 100vh; }
.admin-app.active { display: flex; }

/* Sidebar */
.admin-sidebar {
  width: 240px;
  background: var(--admin-sidebar);
  color: #fff;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: transform .3s;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255,255,255,.1);
  display: flex;
  align-items: center;
  gap: 12px;
}

.sidebar-header h2 {
  font-size: 16px;
  font-weight: 600;
}

.sidebar-header small {
  font-size: 11px;
  color: rgba(255,255,255,.5);
}

.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  color: rgba(255,255,255,.7);
  text-decoration: none;
  font-size: 14px;
  transition: all .2s;
  border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
  background: var(--admin-sidebar-hover);
  color: #fff;
}

.sidebar-nav a.active {
  background: rgba(232,115,74,.15);
  color: var(--admin-primary);
  border-left-color: var(--admin-primary);
}

.sidebar-nav a .nav-icon { font-size: 18px; width: 24px; text-align: center; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,.1);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--admin-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 600;
}

.sidebar-user-info { font-size: 13px; }
.sidebar-user-info .name { font-weight: 600; }
.sidebar-user-info .role { font-size: 11px; color: rgba(255,255,255,.5); }

.logout-btn {
  display: block;
  width: 100%;
  padding: 8px;
  background: rgba(255,255,255,.08);
  border: none;
  border-radius: var(--admin-radius);
  color: rgba(255,255,255,.7);
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
}

.logout-btn:hover { background: rgba(255,255,255,.15); color: #fff; }

/* Main Content */
.admin-main {
  flex: 1;
  margin-left: 240px;
  min-height: 100vh;
}

.admin-topbar {
  height: 60px;
  background: var(--admin-card);
  border-bottom: 1px solid var(--admin-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 18px;
  font-weight: 600;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--admin-text);
}

.admin-content { padding: 24px; }

/* ── Dashboard Cards ── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--admin-card);
  border-radius: var(--admin-radius);
  padding: 24px;
  box-shadow: var(--admin-shadow);
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.stat-icon.orange { background: #fff7ed; }
.stat-icon.green { background: #f0fdf4; }
.stat-icon.blue { background: #eff6ff; }
.stat-icon.yellow { background: #fefce8; }

.stat-info h3 {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.2;
}

.stat-info p {
  font-size: 13px;
  color: var(--admin-text-light);
  margin-top: 2px;
}

/* ── Table ── */
.admin-card {
  background: var(--admin-card);
  border-radius: var(--admin-radius);
  box-shadow: var(--admin-shadow);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--admin-border);
  flex-wrap: wrap;
  gap: 12px;
}

.card-header h3 {
  font-size: 16px;
  font-weight: 600;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.admin-table-wrap { overflow-x: auto; }

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table th {
  background: #f8fafc;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  color: var(--admin-text-light);
  white-space: nowrap;
  border-bottom: 1px solid var(--admin-border);
}

.admin-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--admin-border);
  vertical-align: middle;
}

.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: #f8fafc; }

/* Status Badges */
.status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.status-badge.pending { background: #fef3c7; color: #92400e; }
.status-badge.contacted { background: #dbeafe; color: #1e40af; }
.status-badge.confirmed { background: #d1fae5; color: #065f46; }
.status-badge.cancelled { background: #fee2e2; color: #991b1b; }
.status-badge.completed { background: #ede9fe; color: #5b21b6; }
.status-badge.active { background: #d1fae5; color: #065f46; }
.status-badge.hidden { background: #f1f5f9; color: #64748b; }
.status-badge.draft { background: #f1f5f9; color: #64748b; }
.status-badge.full { background: #fef3c7; color: #92400e; }
.status-badge.ended { background: #e2e8f0; color: #475569; }
.status-badge.unread { background: #fee2e2; color: #991b1b; }
.status-badge.read { background: #dbeafe; color: #1e40af; }
.status-badge.replied { background: #d1fae5; color: #065f46; }
.status-badge.closed { background: #f1f5f9; color: #64748b; }
.status-badge.unpaid { background: #fef3c7; color: #92400e; }
.status-badge.deposit_paid { background: #d1fae5; color: #065f46; }
.status-badge.fully_paid { background: #dbeafe; color: #1e40af; }
.status-badge.refunding { background: #fef3c7; color: #92400e; }
.status-badge.refunded { background: #f1f5f9; color: #64748b; }
.status-badge.vacation { background: #fef3c7; color: #92400e; }
.status-badge.disabled { background: #fee2e2; color: #991b1b; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: var(--admin-radius);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary { background: var(--admin-primary); color: #fff; }
.btn-primary:hover { background: var(--admin-primary-hover); }

.btn-sm { padding: 5px 10px; font-size: 12px; }

.btn-outline {
  background: transparent;
  border: 1px solid var(--admin-border);
  color: var(--admin-text);
}
.btn-outline:hover { background: #f8fafc; }

.btn-success { background: var(--admin-success); color: #fff; }
.btn-warning { background: var(--admin-warning); color: #fff; }
.btn-danger { background: var(--admin-danger); color: #fff; }

/* ── Filters ── */
.filter-tabs {
  display: flex;
  gap: 4px;
}

.filter-tab {
  padding: 6px 14px;
  border: 1px solid var(--admin-border);
  background: transparent;
  border-radius: 20px;
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
  color: var(--admin-text);
}

.filter-tab.active {
  background: var(--admin-primary);
  border-color: var(--admin-primary);
  color: #fff;
}

/* ── Modal ── */
.admin-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.admin-modal-overlay.show { display: flex; }

.admin-modal {
  background: var(--admin-card);
  border-radius: 12px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.2);
}

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

.modal-header h3 { font-size: 16px; font-weight: 600; }

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--admin-text-light);
  padding: 4px;
}

.modal-body { padding: 20px; }

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--admin-border);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ── Form ── */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--admin-text);
}

.form-group label .required { color: var(--admin-danger); }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--admin-border);
  border-radius: var(--admin-radius);
  font-size: 14px;
  outline: none;
  transition: border-color .2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--admin-primary);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ── Toast ── */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  border-radius: var(--admin-radius);
  color: #fff;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,.15);
  animation: toastIn .3s ease;
  max-width: 360px;
}

.toast.success { background: var(--admin-success); }
.toast.error { background: var(--admin-danger); }
.toast.info { background: var(--admin-info); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ── Empty State ── */
.empty-state {
  padding: 60px 20px;
  text-align: center;
  color: var(--admin-text-light);
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; }
.empty-state p { font-size: 14px; }

/* ── Loading ── */
.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  color: var(--admin-text-light);
  font-size: 14px;
  gap: 8px;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--admin-border);
  border-top-color: var(--admin-primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Page sections ── */
.page-section { display: none; }
.page-section.active { display: block; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }

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

  .admin-main { margin-left: 0; }
  .mobile-menu-btn { display: block; }

  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }

  .admin-content { padding: 16px; }

  .card-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .login-box { padding: 32px 24px; }
}