/* 吉林省技工院校全景地图 - 管理后台样式 */
:root {
  --primary: #1a73e8;
  --primary-dark: #1557b0;
  --primary-light: #e8f0fe;
  --success: #34a853;
  --warning: #f9ab00;
  --danger: #ea4335;
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f4;
  --gray-200: #e8eaed;
  --gray-300: #dadce0;
  --gray-500: #9aa0a6;
  --gray-700: #5f6368;
  --gray-900: #202124;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 14px;
  color: var(--gray-900);
  background: #f0f2f5;
  line-height: 1.6;
}

/* ========== LAYOUT ========== */
.app-shell { display: flex; flex-direction: column; min-height: 100vh; }
.app-header {
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
  padding: 0 24px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}
.app-header__brand { display: flex; align-items: center; gap: 12px; }
.app-header__brand strong { font-size: 18px; color: var(--primary); }
.app-header__brand span { font-size: 13px; color: var(--gray-500); }
.app-header__meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--gray-700); }
.app-body { display: flex; flex: 1; overflow: hidden; }

/* ========== SIDEBAR ========== */
.app-sidebar {
  width: 280px;
  background: #fff;
  border-right: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sidebar-header h3 { font-size: 14px; color: var(--gray-700); }
.tree-view { flex: 1; overflow-y: auto; padding: 8px 0; }

/* Tree Node */
.tree-node { }
.tree-node__header {
  display: flex;
  align-items: center;
  padding: 6px 16px;
  cursor: pointer;
  transition: background 0.15s;
  user-select: none;
}
.tree-node__header:hover { background: var(--gray-50); }
.tree-node__header.is-active { background: var(--primary-light); }
.tree-node__chevron {
  width: 20px;
  font-size: 10px;
  color: var(--gray-500);
  transition: transform 0.2s;
  flex-shrink: 0;
}
.tree-node__chevron.is-expanded { transform: rotate(90deg); }
.tree-node__label { flex: 1; font-size: 13px; margin-left: 4px; }
.tree-node__meta { font-size: 11px; color: var(--gray-500); margin-left: 8px; }
.tree-node__children { padding-left: 20px; }
.tree-node--city .tree-node__label { font-size: 13px; color: var(--gray-700); }
.tree-node--school { padding-left: 20px; }
.tree-node--school .tree-node__label { font-size: 13px; }
.tree-node--active > .tree-node__header { background: var(--primary-light); color: var(--primary); }

/* ========== MAIN CONTENT ========== */
.app-main { flex: 1; overflow-y: auto; padding: 20px; background: #f0f2f5; }
.main-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}
.main-header h2 { font-size: 20px; font-weight: 600; }
.main-header small { font-size: 13px; color: var(--gray-500); font-weight: 400; margin-left: 12px; }

/* ========== SHEET TABS ========== */
.sheet-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: #fff;
  padding: 4px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}
.sheet-tab {
  padding: 8px 18px;
  font-size: 13px;
  border: none;
  background: transparent;
  border-radius: 6px;
  cursor: pointer;
  color: var(--gray-700);
  white-space: nowrap;
  transition: all 0.15s;
}
.sheet-tab:hover { background: var(--gray-50); }
.sheet-tab.is-active {
  background: var(--primary);
  color: #fff;
  font-weight: 500;
}

/* ========== PANEL CARD ========== */
.panel {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.panel-header h3 { font-size: 15px; font-weight: 600; }
.panel-body { padding: 20px; }

/* ========== FORM ========== */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-grid .full { grid-column: 1 / -1; }
.form-group { display: flex; flex-direction: column; }
.form-group label { font-size: 13px; color: var(--gray-700); margin-bottom: 4px; font-weight: 500; }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 8px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s;
  background: #fff;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(26,115,232,0.15);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-hint { font-size: 12px; color: var(--gray-500); margin-top: 2px; }

/* ========== TABLE ========== */
.table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  background: var(--gray-50);
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--gray-700);
  border-bottom: 2px solid var(--gray-200);
  white-space: nowrap;
}
.data-table td { padding: 8px 12px; border-bottom: 1px solid var(--gray-200); }
.data-table td input,
.data-table td select {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--gray-300);
  border-radius: 4px;
  font-size: 13px;
}
.data-table td input:focus,
.data-table td select:focus {
  outline: none;
  border-color: var(--primary);
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  cursor: pointer;
  background: #fff;
  color: var(--gray-700);
  transition: all 0.15s;
  white-space: nowrap;
}
.btn:hover { background: var(--gray-50); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #d93025; }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 6px 8px; border: none; background: transparent; cursor: pointer; color: var(--gray-500); }
.btn-icon:hover { color: var(--danger); }
.btn-row { display: flex; gap: 8px; margin-top: 16px; justify-content: flex-end; }

/* ========== MEDIA UPLOAD ========== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.media-card {
  border: 1px dashed var(--gray-300);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  background: var(--gray-50);
  cursor: pointer;
  transition: all 0.15s;
}
.media-card:hover { border-color: var(--primary); background: var(--primary-light); }
.media-card__icon { font-size: 32px; margin-bottom: 8px; }
.media-card__label { font-size: 13px; color: var(--gray-700); }
.media-card__hint { font-size: 11px; color: var(--gray-500); margin-top: 4px; }
.media-card__count { font-size: 12px; color: var(--primary); margin-top: 4px; }
/* Media items moved to media-preview-grid below */
.media-item__preview-btn { font-size: 14px; color: var(--gray-500); text-decoration: none; padding: 4px 8px; border: none; background: none; cursor: pointer; }
.media-item__preview-btn:hover { color: var(--primary); }

/* Media preview grid */
.media-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.media-item {
  background: var(--gray-50);
  border-radius: 8px;
  border: 1px solid var(--gray-200);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.media-item__preview-wrap {
  width: 100%;
  height: 120px;
  overflow: hidden;
  background: #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.media-item__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-item__video-icon {
  font-size: 32px;
  color: var(--gray-500);
  opacity: 0.5;
}
.media-item__info {
  padding: 8px 10px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.media-item__name {
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--gray-700);
}
.media-item__size {
  font-size: 11px;
  color: var(--gray-500);
}
.media-item__actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 10px 8px;
}
.media-item__actions .btn-icon { padding: 4px 6px; }
.file-input-hidden { display: none; }

/* ========== DIALOG ========== */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.dialog {
  background: #fff;
  border-radius: 12px;
  width: 480px;
  max-width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.dialog-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.dialog-header h2 { font-size: 18px; }
.dialog-header p { font-size: 13px; color: var(--gray-500); margin-top: 4px; }
.dialog-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--gray-500); padding: 4px; }
.dialog-body { padding: 20px 24px; }
.dialog-footer {
  padding: 16px 24px 20px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  border-top: 1px solid var(--gray-200);
}

/* ========== LOGIN ========== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1a73e8 0%, #4285f4 100%);
}
.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  width: 380px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.login-card h1 { font-size: 24px; color: var(--primary); text-align: center; margin-bottom: 4px; }
.login-card p { font-size: 13px; color: var(--gray-500); text-align: center; margin-bottom: 24px; }
.login-card .form-group { margin-bottom: 16px; }
.login-card .btn { width: 100%; justify-content: center; padding: 10px; }
.login-error { color: var(--danger); font-size: 13px; text-align: center; margin-bottom: 12px; }

/* ========== USER MANAGEMENT ========== */
.user-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 20px;
}
.user-list { }
.user-list-item {
  padding: 12px 16px;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.user-list-item:hover { background: var(--gray-50); }
.user-list-item.is-active { background: var(--primary-light); }
.user-list-item__name { font-weight: 500; font-size: 14px; }
.user-list-item__meta { font-size: 12px; color: var(--gray-500); }

/* ========== STATUS ========== */
.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 10px;
  font-size: 12px;
}
.status-badge--active { background: #e6f4ea; color: var(--success); }
.status-badge--inactive { background: #fce8e6; color: var(--danger); }

/* ========== TOAST ========== */
#toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 14px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  transform: translateX(120%);
  transition: transform 0.3s ease;
  max-width: 360px;
}
.toast--visible { transform: translateX(0); }
.toast--info { background: var(--primary); }
.toast--success { background: var(--success); }
.toast--error { background: var(--danger); }

/* ========== LOADING OVERLAY ========== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9998;
}
.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay p { margin-top: 12px; color: var(--gray-700); font-size: 14px; }

/* ========== EMPTY STATE ========== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--gray-500);
}
.empty-state h2 { font-size: 18px; margin-bottom: 8px; color: var(--gray-700); }
.empty-state p { font-size: 14px; }

/* Mobile selectors: hidden on desktop, shown via @media */
.mobile-selectors { display: none; flex-direction: column; gap: 10px; max-width: 320px; margin: 20px auto 0; }
.mobile-select {
  padding: 10px 12px;
  border: 1px solid var(--gray-300);
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  width: 100%;
}

/* ========== BROCHURE SECTION ========== */
.brochure-card {
  margin-top: 20px;
  padding: 16px;
  background: var(--gray-50);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
}
.brochure-card h4 { font-size: 14px; margin-bottom: 4px; }
.brochure-card p { font-size: 12px; color: var(--gray-500); margin-bottom: 12px; }
.brochure-meta { font-size: 13px; }
.brochure-meta div { display: flex; margin-bottom: 6px; }
.brochure-meta strong { width: 100px; color: var(--gray-500); }
.brochure-meta a { color: var(--primary); text-decoration: none; }
.brochure-meta a:hover { text-decoration: underline; }

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  /* Sidebar: slide-over overlay instead of hidden */
  .app-sidebar {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    z-index: 200;
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }
  .app-sidebar.is-open {
    transform: translateX(0);
  }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.35);
    z-index: 199;
  }
  .sidebar-backdrop.is-visible {
    display: block;
  }
  .sidebar-toggle {
    display: inline-flex !important;
  }

  /* Header: compact layout */
  .app-header { padding: 0 12px; height: auto; min-height: 48px; flex-wrap: wrap; }
  .app-header__brand strong { font-size: 15px; }
  .app-header__brand span { display: none; }
  .app-header__meta { gap: 6px; font-size: 12px; flex-wrap: wrap; justify-content: flex-end; }
  .app-header__meta .btn-sm { padding: 2px 8px; font-size: 11px; }

  /* Main content: less padding */
  .app-main { padding: 10px; }
  .main-header { flex-direction: column; gap: 8px; align-items: stretch; }
  .main-header h2 { font-size: 17px; }
  .main-header h2 small { display: block; margin-left: 0; margin-top: 2px; font-size: 12px; }
  .main-header > div:last-child { flex-wrap: wrap; }

  /* Sheet tabs: scrollable */
  .sheet-tabs { margin: 0 -10px 12px; border-radius: 0; padding: 4px 10px; }
  .sheet-tab { padding: 6px 12px; font-size: 12px; }

  /* Panel: compact */
  .panel-body { padding: 12px; }
  .panel-header { padding: 12px; }
  .panel-header h3 { font-size: 14px; }

  /* Form: full width */
  .form-grid { grid-template-columns: 1fr; gap: 10px; }
  .form-group input,
  .form-group select,
  .form-group textarea { font-size: 14px; padding: 10px 10px; }
  .form-group textarea { min-height: 80px; }

  /* Table: scrollable + compact cells */
  .table-wrap { margin: 0 -12px; }
  .data-table { font-size: 12px; }
  .data-table th,
  .data-table td { padding: 6px 8px; }
  .data-table td input,
  .data-table td select { font-size: 12px; padding: 4px 6px; min-width: 60px; }
  .data-table td .btn-icon { padding: 4px; }

  /* Buttons: larger touch targets */
  .btn { padding: 10px 16px; font-size: 14px; justify-content: center; }
  .btn-sm { padding: 6px 12px; font-size: 12px; }
  .btn-row { flex-direction: column; }
  .btn-row .btn { width: 100%; }

  /* Login: full screen */
  .login-page { padding: 16px; }
  .login-card { width: 100%; max-width: 380px; padding: 24px; }
  .login-card h1 { font-size: 20px; }
  .login-card .btn { padding: 12px; font-size: 16px; }

  /* Dialog: nearly fullscreen */
  .dialog { width: 100%; max-width: 100vw; max-height: 100vh; border-radius: 0; }
  .dialog-header { padding: 16px 16px 12px; }
  .dialog-header h2 { font-size: 16px; }
  .dialog-body { padding: 12px 16px; }
  .dialog-footer { padding: 12px 16px 16px; }
  .dialog-footer .btn { flex: 1; }

  /* User grid: single column */
  .user-grid { grid-template-columns: 1fr; gap: 12px; }

  /* Media grid */
  .media-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .media-card { padding: 12px; }
  .media-card__icon { font-size: 24px; }
  .media-card__label { font-size: 12px; }

  /* Mobile city/school selectors in empty state */
  .mobile-selectors { display: flex !important; }

  /* Tree node: adjust spacing */
  .tree-node__header { padding: 8px 12px; }
  .tree-node__children { padding-left: 12px; }

  /* Brochure section */
  .brochure-card { padding: 12px; }
}