/* 住宿登记系统 - 共用样式 */
:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #14b8a6;
  --accent: #6366f1;
  --bg: #f0fdfa;
  --bg-card: #ffffff;
  --text: #134e4a;
  --text-muted: #5eead4;
  --text-secondary: #64748b;
  --border: #ccfbf1;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --shadow: 0 4px 6px -1px rgb(13 148 136 / 0.08), 0 2px 4px -2px rgb(13 148 136 / 0.06);
  --shadow-lg: 0 10px 15px -3px rgb(13 148 136 / 0.1), 0 4px 6px -4px rgb(13 148 136 / 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: linear-gradient(160deg, var(--bg) 0%, #e0f2fe 50%, #f0f9ff 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* 布局 */
.app-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  padding: 1.5rem 1rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.app-header h1 {
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.app-header p {
  margin-top: 0.35rem;
  opacity: 0.92;
  font-size: clamp(0.85rem, 2.5vw, 0.95rem);
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
}

.container--wide {
  max-width: 1100px;
}

.hidden {
  display: none !important;
}

/* 后台登录 */
.admin-login-screen {
  min-height: calc(100vh - 120px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.admin-login-card {
  width: 100%;
  max-width: 400px;
}

.admin-login-hint {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.admin-login-footnote {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
}

.admin-settings-card {
  margin-top: 1.25rem;
}

.admin-settings-hint {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.card-subtitle {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
  color: var(--text-primary);
}

.admin-audit-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 220px;
  overflow-y: auto;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.admin-audit-list li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.admin-audit-list li:last-child {
  border-bottom: none;
}

.admin-app .app-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.admin-header-actions {
  margin-top: 0.5rem;
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.85rem;
}

/* 导航 */
.nav-bar {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  text-decoration: none;
  border-radius: 999px;
  font-size: 0.875rem;
  transition: background var(--transition);
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.35);
}

/* 卡片 */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title::before {
  content: "";
  width: 4px;
  height: 1.1em;
  background: var(--primary);
  border-radius: 2px;
}

/* 标签页 */
.tabs {
  display: flex;
  gap: 0.25rem;
  background: #f1f5f9;
  padding: 0.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
}

.tab-btn {
  flex: 1;
  padding: 0.65rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 6px;
  transition: all var(--transition);
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 表单 */
.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--text);
}

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

.form-input,
.form-select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: #fff;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(13 148 136 / 0.15);
}

.form-input.error,
.form-select.error {
  border-color: var(--danger);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
}

.form-error {
  font-size: 0.75rem;
  color: var(--danger);
  margin-top: 0.3rem;
  display: none;
}

.form-error.visible {
  display: block;
}

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

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  width: 100%;
  margin-top: 0.25rem;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgb(13 148 136 / 0.35);
}

.btn-secondary {
  background: #f1f5f9;
  color: var(--text);
  border: 1px solid #e2e8f0;
}

.btn-secondary:hover:not(:disabled) {
  background: #e2e8f0;
}

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

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

.btn-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* 预约列表 */
.booking-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.booking-item {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-sm);
  padding: 1rem;
  transition: border-color var(--transition);
}

.booking-item:hover {
  border-color: var(--primary-light);
}

.booking-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.6rem;
}

.booking-item-name {
  font-weight: 600;
  font-size: 1rem;
}

.booking-meta {
  display: grid;
  gap: 0.35rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.booking-meta span strong {
  color: var(--text);
  font-weight: 500;
}

/* 状态标签 */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  white-space: nowrap;
}

.badge-pending {
  background: var(--warning-bg);
  color: #b45309;
}

.badge-checked-in {
  background: var(--success-bg);
  color: #047857;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

/* Toast */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  left: 1rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
  pointer-events: none;
}

@media (min-width: 480px) {
  .toast-container {
    left: auto;
    max-width: 360px;
  }
}

.toast {
  pointer-events: auto;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.35s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  max-width: 100%;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

.toast-success {
  background: var(--success-bg);
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.toast-error {
  background: var(--danger-bg);
  color: #991b1b;
  border: 1px solid #fecaca;
}

.toast-info {
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* 模态框 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 8000;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #fff;
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition);
}

.modal-overlay.open .modal {
  transform: scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid #e2e8f0;
}

.modal-header h3 {
  font-size: 1.1rem;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0.25rem;
}

.modal-close:hover {
  color: var(--text);
}

.modal-body {
  padding: 1.25rem;
}

.modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid #e2e8f0;
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

/* 管理页表格 */
.admin-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.admin-stats {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.stat-chip {
  background: #f0fdfa;
  border: 1px solid var(--border);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--primary-dark);
}

.stat-chip strong {
  font-weight: 700;
}

.search-box {
  flex: 1;
  min-width: 180px;
  max-width: 280px;
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th,
.data-table td {
  padding: 0.75rem 0.65rem;
  text-align: left;
  border-bottom: 1px solid #e2e8f0;
}

.data-table th {
  background: #f8fafc;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.data-table tr:hover td {
  background: #f8fafc;
}

.data-table .actions {
  white-space: nowrap;
}

/* 移动端卡片视图 */
.booking-cards-mobile {
  display: none;
}

@media (max-width: 768px) {
  .data-table-desktop {
    display: none;
  }

  .booking-cards-mobile {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
  }

  .admin-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-sm);
    padding: 1rem;
  }

  .admin-card-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 0.25rem 0;
  }

  .admin-card-row label {
    color: var(--text-secondary);
    flex-shrink: 0;
    margin-right: 0.5rem;
  }

  .admin-card-actions {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid #e2e8f0;
  }
}

@media (min-width: 769px) {
  .booking-cards-mobile {
    display: none !important;
  }
}

.footer-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 1.5rem;
  padding: 0 1rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}