/* ===== Reset & Variables ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --bg2: #1a1d27;
  --bg3: #22263a;
  --border: #2e3347;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-light: rgba(99,102,241,0.15);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #22c55e;
  --warning: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
  --transition: 0.18s ease;
}

html { font-size: 15px; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Noto Sans SC', sans-serif;
  min-height: 100vh;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ===== Header ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(15,17,23,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1200px; margin: 0 auto;
  padding: 12px 20px;
  display: flex; align-items: center; gap: 16px;
}
.logo {
  font-size: 1.2rem; font-weight: 700;
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  white-space: nowrap;
}
.search-wrap {
  flex: 1; display: flex; align-items: center;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 999px; overflow: hidden;
  transition: border-color var(--transition);
}
.search-wrap:focus-within { border-color: var(--accent); }
.search-wrap select {
  background: transparent; border: none; outline: none;
  padding: 8px 12px; color: var(--text2); font-size: 0.85rem;
  border-right: 1px solid var(--border);
}
.search-wrap input {
  flex: 1; background: transparent; border: none; outline: none;
  padding: 8px 14px; font-size: 0.95rem;
}
.search-wrap button {
  padding: 8px 14px; color: var(--text2);
  transition: color var(--transition);
}
.search-wrap button:hover { color: var(--accent); }
.search-wrap button svg { width: 18px; height: 18px; display: block; }
.admin-link {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text2); transition: all var(--transition);
}
.admin-link:hover { border-color: var(--accent); color: var(--accent); }
.admin-link svg { width: 18px; height: 18px; }

/* ===== Tag Bar ===== */
.tag-bar {
  max-width: 1200px; margin: 0 auto;
  padding: 14px 20px;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.tag-btn {
  padding: 5px 14px; border-radius: 999px; font-size: 0.85rem;
  background: var(--bg2); border: 1px solid var(--border);
  color: var(--text2); transition: all var(--transition);
}
.tag-btn:hover { border-color: var(--accent); color: var(--accent); }
.tag-btn.active {
  background: var(--accent-light); border-color: var(--accent);
  color: var(--accent); font-weight: 500;
}

/* ===== Cards Grid ===== */
.main { max-width: 1200px; margin: 0 auto; padding: 0 20px 40px; }
.cards {
  display: flex; flex-direction: column; gap: 18px;
}
.loading { text-align: center; color: var(--text3); padding: 60px 0; }

/* ===== Folder Grid (Top) ===== */
.folder-grid {
  display: flex; flex-wrap: wrap; gap: 12px;
  margin-bottom: 20px;
}
.folder-tab {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 10px 16px;
  cursor: pointer; transition: all var(--transition);
  min-width: 0;
}
.folder-tab:hover { border-color: var(--accent); background: var(--accent-light); }
.folder-tab.active {
  border-color: var(--accent); background: var(--accent-light);
  box-shadow: 0 0 0 2px rgba(99,102,241,0.15);
}
.folder-tab-icon { width: 20px; height: 20px; flex-shrink: 0; }
.folder-tab-name { font-weight: 600; font-size: 0.9rem; white-space: nowrap; }
.folder-tab-count {
  font-size: 0.72rem; color: var(--text3);
  background: var(--bg3); padding: 2px 7px; border-radius: 999px;
}
.folder-hint {
  text-align: center; color: var(--text3); padding: 48px 0; font-size: 0.9rem;
}

/* ===== Folder Cards ===== */
.folder-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.folder-cards.flat-grid { padding: 0; }

/* ===== Bookmark Card ===== */
.card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
  display: flex; align-items: flex-start; gap: 12px;
  cursor: pointer; transition: all var(--transition);
  position: relative; overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--card-color, var(--accent)), transparent 60%);
  opacity: 0; transition: opacity var(--transition);
}
.card:hover { border-color: var(--card-color, var(--accent)); transform: translateY(-2px); box-shadow: var(--shadow); }
.card:hover::before { opacity: 0.06; }

.card-icon {
  width: 40px; height: 40px; border-radius: 10px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700; color: #fff;
  background: var(--card-color, var(--accent));
  overflow: hidden;
}
.card-icon img { width: 100%; height: 100%; object-fit: cover; border-radius: 10px; }
.card-body { flex: 1; min-width: 0; }
.card-name {
  font-weight: 600; font-size: 0.95rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.card-desc {
  font-size: 0.8rem; color: var(--text2); margin-top: 3px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.card-tag {
  font-size: 0.72rem; padding: 1px 7px; border-radius: 999px;
  background: var(--bg3); color: var(--text3);
}
.card-pinned {
  position: absolute; top: 8px; right: 8px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

/* ===== Admin Body ===== */
.admin-body { background: var(--bg); }
#adminApp { display: flex; min-height: 100vh; }

/* ===== Login Panel ===== */
.login-panel {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg);
}
.login-card {
  width: 100%; max-width: 380px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 32px;
  box-shadow: var(--shadow);
}
.login-logo {
  display: flex; align-items: center; gap: 10px;
  font-size: 1.3rem; font-weight: 700; margin-bottom: 24px;
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.login-logo svg { width: 28px; height: 28px; stroke: #6366f1; -webkit-text-fill-color: initial; }
.login-card h2 { font-size: 1.1rem; color: var(--text2); margin-bottom: 20px; }

/* ===== Sidebar ===== */
.sidebar {
  width: 220px; flex-shrink: 0;
  background: var(--bg2); border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.sidebar-logo {
  padding: 20px 18px 16px;
  font-size: 1.1rem; font-weight: 700;
  display: flex; align-items: center; gap: 8px;
  background: linear-gradient(135deg, #6366f1, #a78bfa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo svg { width: 22px; height: 22px; stroke: #6366f1; -webkit-text-fill-color: initial; }
.sidebar-nav { flex: 1; padding: 12px 10px; display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: 0.9rem; color: var(--text2);
  transition: all var(--transition); cursor: pointer;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: var(--accent-light); color: var(--accent); }
.sidebar-footer { padding: 10px; border-top: 1px solid var(--border); }
.logout-btn { width: 100%; color: var(--text3); }
.logout-btn:hover { color: var(--danger); background: rgba(239,68,68,0.1); }

/* ===== Admin Content ===== */
.admin-content { flex: 1; overflow-y: auto; }
.panel { display: none; padding: 28px 32px; max-width: 960px; }
.panel.active { display: block; }
.panel-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px; flex-wrap: wrap; gap: 12px;
}
.panel-header h1 { font-size: 1.4rem; font-weight: 700; }
.panel-header h2 { font-size: 1.1rem; font-weight: 600; }
.panel-toolbar {
  display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap;
}
.toolbar-search {
  flex: 1; min-width: 180px;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 14px; outline: none;
  transition: border-color var(--transition);
}
.toolbar-search:focus { border-color: var(--accent); }
.toolbar-select {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 8px 12px; outline: none;
}

/* ===== Bookmark List ===== */
.bm-list { display: flex; flex-direction: column; gap: 8px; }
.bm-item {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 16px;
  display: flex; align-items: center; gap: 12px;
  transition: border-color var(--transition);
}
.bm-item:hover { border-color: var(--border); }
.bm-icon {
  width: 36px; height: 36px; border-radius: 8px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; font-weight: 700; color: #fff;
  background: var(--item-color, var(--accent));
  overflow: hidden;
}
.bm-icon img { width: 100%; height: 100%; object-fit: cover; border-radius: 8px; }
.bm-info { flex: 1; min-width: 0; }
.bm-name { font-weight: 600; font-size: 0.9rem; }
.bm-url { font-size: 0.78rem; color: var(--text3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bm-tags-row { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 3px; }
.bm-tag { font-size: 0.72rem; padding: 1px 7px; border-radius: 999px; background: var(--bg3); color: var(--text3); }
.bm-actions { display: flex; gap: 6px; flex-shrink: 0; }
.bm-actions button {
  width: 30px; height: 30px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text3); transition: all var(--transition);
}
.bm-actions button svg { width: 15px; height: 15px; }
.bm-actions .edit-btn:hover { background: var(--accent-light); color: var(--accent); }
.bm-actions .del-btn:hover { background: rgba(239,68,68,0.1); color: var(--danger); }

/* ===== Batch ===== */
.batch-bar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 14px; margin-bottom: 12px;
}
.batch-bar .batch-count { color: var(--text2); font-size: 0.85rem; margin-right: auto; }
.batch-bar label { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--text2); cursor: pointer; }
.batch-bar .btn { padding: 6px 12px; font-size: 0.82rem; }
.bm-item.batch-mode { cursor: pointer; }
.bm-item.batch-mode:hover { border-color: var(--accent); }
.bm-item.selected { border-color: var(--accent); background: var(--accent-light); }
.bm-check { display: flex; align-items: center; margin-right: 4px; }
.bm-check-input { width: 16px; height: 16px; cursor: pointer; accent-color: var(--accent); }

/* ===== Import ===== */
.import-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.import-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 10px;
}
.import-icon svg { width: 40px; height: 40px; stroke: var(--accent); }
.import-card h3 { font-size: 1rem; font-weight: 600; }
.import-card p { font-size: 0.85rem; color: var(--text2); }

/* ===== Backup ===== */
.backup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.backup-section {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  display: flex; flex-direction: column; gap: 12px;
}
.backup-section h3 { font-size: 1rem; font-weight: 600; }
.backup-section p { font-size: 0.85rem; color: var(--text2); }
.form-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.status-msg {
  padding: 10px 14px; border-radius: var(--radius-sm);
  font-size: 0.85rem; margin-top: 4px;
}
.status-msg.success { background: rgba(34,197,94,0.1); color: var(--success); border: 1px solid rgba(34,197,94,0.2); }
.status-msg.error { background: rgba(239,68,68,0.1); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }
.status-msg.info { background: var(--accent-light); color: var(--accent); border: 1px solid rgba(99,102,241,0.2); }

/* ===== Settings ===== */
.settings-section {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  margin-bottom: 16px; display: flex; flex-direction: column; gap: 14px;
}
.settings-section h3 { font-size: 1rem; font-weight: 600; }
.danger-text { font-size: 0.85rem; color: var(--danger); }

/* ===== Forms ===== */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; color: var(--text2); font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 9px 12px; outline: none;
  transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus { border-color: var(--accent); }
.form-group input[type="color"] {
  padding: 4px; height: 38px; cursor: pointer;
}
.hint { font-size: 0.78rem; color: var(--text3); font-weight: 400; }
.required { color: var(--danger); }
.flex-1 { flex: 1; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius-sm);
  font-size: 0.9rem; font-weight: 500;
  transition: all var(--transition); cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-outline {
  background: transparent; color: var(--text2);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-block { width: 100%; }

/* ===== Modal ===== */
.modal { position: fixed; inset: 0; z-index: 300; display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.6); backdrop-filter: blur(4px); }
.modal-card {
  position: relative; z-index: 1;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px;
  width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto;
  box-shadow: var(--shadow);
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 20px;
}
.modal-header h3 { font-size: 1.1rem; font-weight: 600; }
.modal-close {
  width: 30px; height: 30px; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--text3);
  transition: all var(--transition);
}
.modal-close:hover { background: var(--bg3); color: var(--text); }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ===== Toggle ===== */
.toggle { display: flex; align-items: center; cursor: pointer; }
.toggle input { display: none; }
.toggle-slider {
  width: 40px; height: 22px; border-radius: 999px;
  background: var(--bg3); border: 1px solid var(--border);
  position: relative; transition: background var(--transition);
}
.toggle-slider::after {
  content: ''; position: absolute;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--text3); top: 2px; left: 2px;
  transition: all var(--transition);
}
.toggle input:checked + .toggle-slider { background: var(--accent); border-color: var(--accent); }
.toggle input:checked + .toggle-slider::after { left: 20px; background: #fff; }

/* ===== Toast ===== */
.toast {
  position: fixed; bottom: 24px; right: 24px; z-index: 999;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 20px;
  font-size: 0.9rem; box-shadow: var(--shadow);
  animation: slideUp 0.2s ease;
}
.toast.success { border-color: var(--success); color: var(--success); }
.toast.error { border-color: var(--danger); color: var(--danger); }
@keyframes slideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Error Msg ===== */
.error-msg {
  background: rgba(239,68,68,0.1); border: 1px solid rgba(239,68,68,0.2);
  color: var(--danger); border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: 0.85rem; margin-bottom: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-logo span, .nav-item span, .sidebar-logo > span { display: none; }
  .nav-item { justify-content: center; padding: 10px; }
  .panel { padding: 20px 16px; }
  .import-grid, .backup-grid { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .header-inner { padding: 10px 14px; }
}
@media (max-width: 480px) {
  .cards { grid-template-columns: 1fr 1fr; }
  .modal-card { margin: 16px; }
}

/* ===== Login Overlay ===== */
.login-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(15, 15, 30, 0.92);
  backdrop-filter: blur(8px);
}

.login-card {
  background: var(--card-bg, #1e1e2e);
  border-radius: 16px;
  padding: 40px 32px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.login-logo {
  font-size: 1.6rem;
  font-weight: 700;
  text-align: center;
  color: var(--primary, #6366f1);
  margin-bottom: 4px;
}

.login-sub {
  text-align: center;
  color: var(--text2, #888);
  font-size: 0.85rem;
  margin-bottom: 24px;
}

.login-error {
  color: #f43f5e;
  font-size: 0.82rem;
  margin-bottom: 12px;
  text-align: center;
}

.login-card .form-group {
  margin-bottom: 16px;
}

.login-card input[type="text"],
.login-card input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border, #333);
  background: var(--bg, #0f0f1a);
  color: var(--text, #eee);
  font-size: 0.9rem;
}

.login-card input:focus {
  outline: none;
  border-color: var(--primary, #6366f1);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

/* 锁定状态：隐藏主内容 */
#app.locked .header,
#app.locked .tag-bar,
#app.locked .edit-bar,
#app.locked .batch-bar-home,
#app.locked .main {
  display: none !important;
}

/* ===== Edit Bar ===== */
.edit-bar {
  padding: 8px 20px;
  background: var(--card-bg, #1e1e2e);
  border-bottom: 1px solid var(--border, #333);
}
.edit-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.edit-bar-tip {
  font-size: 0.82rem;
  color: var(--text2, #888);
}

/* ===== Batch Bar Home ===== */
.batch-bar-home {
  padding: 8px 20px;
  background: var(--card-bg, #1e1e2e);
  border-bottom: 1px solid var(--border, #333);
}
.batch-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.batch-count {
  font-size: 0.82rem;
  color: var(--text2, #888);
}
}