/* 光引国际 - 招生资源中心 */
:root {
  --primary: #7B1FA2;
  --primary-dark: #4A148C;
  --primary-light: #E1BEE7;
  --primary-50: #F3E5F5;
  --accent: #FF6F00;
  --success: #00BFA5;
  --danger: #D32F2F;
  --bg: #F5F0F8;
  --card-bg: #ffffff;
  --text: #2D1B36;
  --text-light: #7B6B85;
  --border: #E8E0EC;
  --sidebar-w: 250px;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(123,31,162,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg: 0 10px 30px rgba(123,31,162,.12);
  --logo-purple: #8B00FF;
  --logo-bg: #E8E8F0;
}

* { margin:0; padding:0; box-sizing:border-box; }
body {
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  background: #fff;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top:0; left:0; bottom:0;
  z-index: 100;
  transition: transform .3s;
}
.sidebar-header {
  padding: 18px 16px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, var(--primary-50), #fff);
}
.sidebar-header .logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-header .logo-svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.sidebar-header .logo-text {
  display: flex;
  flex-direction: column;
}
.sidebar-header .logo-cn {
  font-size: 17px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 2px;
  line-height: 1.2;
}
.sidebar-header .logo-en {
  font-size: 9px;
  font-weight: 600;
  color: var(--text-light);
  letter-spacing: 1.5px;
  margin-top: 2px;
}
.sidebar-header .subtitle {
  font-size: 11px;
  color: var(--text-light);
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed var(--border);
}
.nav-menu {
  flex:1;
  padding: 12px 10px;
  overflow-y: auto;
}
.nav-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 10px 10px 6px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text);
  transition: background .15s;
  margin-bottom: 2px;
}
.nav-item:hover { background: var(--primary-light); }
.nav-item.active {
  background: var(--primary);
  color: #fff;
}
.nav-item .icon { font-size: 16px; width: 20px; text-align:center; }
.nav-item .badge {
  margin-left: auto;
  background: var(--border);
  color: var(--text-light);
  font-size: 11px;
  padding: 1px 7px;
  border-radius: 10px;
}
.nav-item.active .badge { background: rgba(255,255,255,.25); color:#fff; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-light);
}

/* ===== Main ===== */
.main {
  flex:1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.topbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: sticky; top:0; z-index:50;
}
.topbar .menu-toggle {
  display:none;
  font-size: 22px;
  cursor:pointer;
  border:none; background:none;
}
.topbar .page-title { font-size: 18px; font-weight: 700; }
.topbar .search-box {
  flex:1; max-width: 400px;
  position: relative;
}
.topbar .search-box input {
  width:100%;
  padding: 8px 12px 8px 36px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color .15s;
}
.topbar .search-box input:focus { border-color: var(--primary); }
.topbar .search-box .search-icon {
  position:absolute; left:10px; top:50%;
  transform: translateY(-50%);
  color: var(--text-light);
}
.topbar .actions { margin-left:auto; display:flex; gap:10px; }
.topbar .btn-icon {
  width:36px; height:36px;
  display:flex; align-items:center; justify-content:center;
  border-radius:8px; border:1px solid var(--border);
  background:#fff; cursor:pointer; font-size:16px;
  transition: background .15s;
}
.topbar .btn-icon:hover { background: var(--bg); }

.content { padding: 24px; flex:1; }

/* ===== Cards ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h3 { font-size: 15px; font-weight: 700; }
.card-body { padding: 20px; }

/* ===== School Grid ===== */
.school-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}
.school-card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
  border: 1px solid var(--border);
}
.school-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}
.school-card .banner {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 32px;
  font-weight: 800;
  position: relative;
}
.school-card .banner .status-tag {
  position:absolute; top:10px; right:10px;
  font-size:11px; padding:2px 8px;
  border-radius:10px; background:rgba(255,255,255,.25);
  color:#fff;
}
.school-card .body { padding: 14px 16px; }
.school-card .name { font-size:16px; font-weight:700; margin-bottom:4px; }
.school-card .campus { font-size:13px; color: var(--text-light); margin-bottom:8px; }
.school-card .stats { display:flex; gap:16px; font-size:12px; color: var(--text-light); }
.school-card .stats span strong { color: var(--primary); font-size:18px; }

/* ===== Material Gallery ===== */
.material-toolbar {
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:16px;
  flex-wrap:wrap;
}
.filter-chip {
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
  transition: all .15s;
}
.filter-chip:hover { border-color: var(--primary); color: var(--primary); }
.filter-chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.material-grid {
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(230px,1fr));
  gap: 14px;
}
.material-item {
  background:#fff;
  border-radius: var(--radius);
  overflow:hidden;
  box-shadow: var(--shadow);
  cursor:pointer;
  transition: transform .15s;
  border:1px solid var(--border);
  position: relative;
}
.material-item:hover { transform: translateY(-2px); border-color: var(--primary); }
.material-item .thumb {
  height: 175px;
  background: var(--bg);
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
  position:relative;
}
.material-item .thumb img {
  width:100%; height:100%; object-fit:cover;
}
.material-item .thumb .file-icon {
  font-size: 40px;
  color: var(--text-light);
}
.material-item .thumb .type-badge {
  position:absolute; top:8px; left:8px;
  font-size:10px; padding:2px 8px;
  border-radius:4px; background:rgba(0,0,0,.6);
  color:#fff;
}
.material-item .info { padding: 10px 12px; }
.material-item .info .title {
  font-size:13px; font-weight:600;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.material-item .info .meta {
  font-size:11px; color:var(--text-light);
  margin-top:4px;
  display:flex; justify-content:space-between;
}
.material-item .actions {
  position:absolute; bottom:0; left:0; right:0;
  background:rgba(255,255,255,.95);
  padding:6px;
  display:flex; gap:6px;
  opacity:0; transition:opacity .15s;
}
.material-item:hover .actions { opacity:1; }
.material-item .actions button {
  flex:1; padding:4px;
  border:none; border-radius:4px;
  font-size:12px; cursor:pointer;
  background: var(--primary); color:#fff;
}
.material-item .actions button.share-btn { background: #07c160; }
.material-item .actions button.del-btn { background: var(--danger); }

/* ===== Buttons ===== */
.btn {
  padding: 8px 18px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  cursor: pointer;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition: opacity .15s;
}
.btn:hover { opacity:.85; }
.btn-primary { background: var(--primary); color:#fff; }
.btn-success { background: var(--success); color:#fff; }
.btn-danger { background: var(--danger); color:#fff; }
.btn-outline {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-wechat { background:#07c160; color:#fff; }

/* ===== Upload Zone ===== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--primary);
  background: var(--primary-light);
}
.upload-zone .icon { font-size: 36px; color: var(--text-light); }
.upload-zone .text { margin-top:8px; font-size:14px; color: var(--text-light); }
.upload-zone .text strong { color: var(--primary); }

/* ===== Modal ===== */
.modal-overlay {
  position:fixed; inset:0;
  background: rgba(0,0,0,.5);
  z-index: 1000;
  display:none;
  align-items:center; justify-content:center;
  padding: 20px;
}
.modal-overlay.show { display:flex; }
.modal {
  background:#fff;
  border-radius: var(--radius);
  width:100%; max-width: 500px;
  max-height: 90vh;
  overflow-y:auto;
  box-shadow: var(--shadow-lg);
}
.modal.large { max-width: 800px; }
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.modal-header h3 { font-size:16px; font-weight:700; }
.modal-header .close {
  background:none; border:none; font-size:22px;
  cursor:pointer; color: var(--text-light);
}
.modal-body { padding: 20px; }
.modal-footer {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display:flex; justify-content:flex-end; gap:10px;
}

/* ===== Preview Modal ===== */
.preview-modal .modal { max-width: 900px; }
.preview-content {
  text-align:center;
  background:#000;
  min-height: 300px;
  display:flex; align-items:center; justify-content:center;
}
.preview-content img { max-width:100%; max-height:70vh; }
.preview-content .file-placeholder {
  color:#fff; font-size:60px;
}
.preview-info {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display:flex; align-items:center; justify-content:space-between;
}
.preview-info .file-name { font-weight:600; font-size:15px; }
.preview-info .file-meta { font-size:12px; color: var(--text-light); margin-top:4px; }

/* ===== Share Modal ===== */
.share-options {
  display:flex; flex-direction:column; gap:12px;
}
.share-option {
  display:flex; align-items:center; gap:14px;
  padding:14px;
  border:1px solid var(--border);
  border-radius: var(--radius);
  cursor:pointer;
  transition: border-color .15s, background .15s;
}
.share-option:hover { border-color: var(--primary); background: var(--primary-light); }
.share-option .icon {
  width:42px; height:42px;
  border-radius:10px;
  display:flex; align-items:center; justify-content:center;
  font-size:20px; color:#fff;
}
.share-option.wechat .icon { background:#07c160; }
.share-option.link .icon { background: var(--primary); }
.share-option.qrcode .icon { background: var(--text); }
.share-option .info h4 { font-size:14px; font-weight:700; }
.share-option .info p { font-size:12px; color: var(--text-light); margin-top:2px; }

.qrcode-box {
  text-align:center; padding:20px;
}
.qrcode-box canvas { margin:0 auto; }
.qrcode-box .tip {
  margin-top:12px; font-size:13px; color: var(--text-light);
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--text);
  color: #fff;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 2000;
  opacity: 0;
  transition: all .3s;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity:1; }
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state .title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.empty-state .desc { font-size: 13px; }

/* ===== Compare Table ===== */
.compare-table {
  width:100%;
  border-collapse: collapse;
}
.compare-table th, .compare-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.compare-table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--text-light);
  white-space:nowrap;
}
.compare-table td:first-child { font-weight: 600; }

/* ===== Responsive ===== */
@media(max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .topbar .menu-toggle { display:block; }
  .topbar .search-box { max-width: none; }
  .school-grid { grid-template-columns: 1fr; }
  .material-grid { grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); }
}

/* ===== Mobile Sidebar Overlay ===== */
.sidebar-overlay {
  display:none;
  position:fixed; inset:0;
  background:rgba(0,0,0,.4);
  z-index: 99;
}
.sidebar-overlay.show { display:block; }

/* ===== Stat Cards ===== */
.stat-row {
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(200px,1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.stat-card {
  background:#fff;
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
  border:1px solid var(--border);
}
.stat-card .label { font-size:12px; color: var(--text-light); margin-bottom:6px; }
.stat-card .value { font-size: 24px; font-weight: 800; color: var(--primary); }
.stat-card .value .unit { font-size:13px; color: var(--text-light); font-weight:400; }

/* ===== Recent Updates ===== */
.recent-list {
  display:flex; flex-direction:column; gap:8px;
}
.recent-item {
  display:flex; align-items:center; gap:12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: var(--bg);
  border:1px solid var(--border);
}
.recent-item .file-icon-sm {
  width:36px; height:36px;
  border-radius:8px;
  background: var(--primary-light);
  display:flex; align-items:center; justify-content:center;
  font-size:18px;
  flex-shrink:0;
}
.recent-item .info { flex:1; min-width:0; }
.recent-item .info .name {
  font-size:13px; font-weight:500;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.recent-item .info .meta { font-size:11px; color: var(--text-light); margin-top:2px; }
.recent-item .school-tag {
  font-size:11px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  white-space:nowrap;
}

/* ===== Tag Colors ===== */
.tag-cella { background:#F3E5F5; color:#4A148C; }
.tag-cia { background:#E0F2F1; color:#004D40; }
.tag-smeag { background:#F3E5F5; color:#38006B; }
.tag-cg { background:#FCE4EC; color:#630033; }
.tag-cpils { background:#EDE7F6; color:#1A0A47; }
.tag-custom { background:#FFF3E0; color:#E65100; }

/* ===== Banner Colors ===== */
.banner-cella { background: linear-gradient(135deg, #7B1FA2, #4A148C); }
.banner-cia { background: linear-gradient(135deg, #00897B, #004D40); }
.banner-smeag { background: linear-gradient(135deg, #6A1B9A, #38006B); }
.banner-cg { background: linear-gradient(135deg, #AD1457, #630033); }
.banner-cpils { background: linear-gradient(135deg, #4527A0, #1A0A47); }
.banner-custom { background: linear-gradient(135deg, #FF8F00, #E65100); }

/* ===== School Detail Header ===== */
.school-detail-header {
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:20px;
}
.school-detail-header .school-banner {
  width:80px; height:80px;
  border-radius: var(--radius);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:24px; font-weight:800;
  flex-shrink:0;
}
.school-detail-header .school-info h2 { font-size:22px; font-weight:800; }
.school-detail-header .school-info p { font-size:13px; color: var(--text-light); margin-top:4px; }
.school-detail-header .school-stats {
  margin-left:auto;
  display:flex; gap:20px;
}
.school-detail-header .school-stats .stat {
  text-align:center;
}
.school-detail-header .school-stats .stat .num { font-size:22px; font-weight:800; color: var(--primary); }
.school-detail-header .school-stats .stat .label { font-size:11px; color: var(--text-light); }

/* ===== Tabs ===== */
.tabs {
  display:flex;
  gap:4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
}
.tab {
  padding: 10px 20px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-light);
  border-bottom: 2px solid transparent;
  transition: all .15s;
}
.tab:hover { color: var(--primary); }
.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

/* ===== Back Button ===== */
.back-btn {
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:14px;
  color: var(--text-light);
  cursor:pointer;
  margin-bottom:16px;
  background:none; border:none;
}
.back-btn:hover { color: var(--primary); }

/* ===== Logo Animation ===== */
@keyframes logoRotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.logo-svg:hover {
  animation: logoRotate 2s linear infinite;
}

/* ===== Loading Spinner (uses logo arrows) ===== */
.spinner {
  width: 40px;
  height: 40px;
  animation: logoRotate 1s linear infinite;
}