/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: #fff;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
:root {
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-hover: rgba(255, 255, 255, 0.14);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-blur: 20px;
  --accent: #6c7ce0;
  --accent-hover: #7d8dee;
  --accent-solid: #5a6ad4;
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.6);
  --text-tertiary: rgba(255, 255, 255, 0.4);
  --danger: #e06c75;
  --radius: 12px;
  --radius-sm: 8px;
  --sidebar-w: 220px;
  --transition: 0.2s ease;
}

/* ===== Background ===== */
#bg-layer {
  position: fixed; inset: 0; z-index: -2;
  background-size: cover; background-position: center;
  transition: opacity 0.6s ease;
}
#bg-overlay {
  position: fixed; inset: 0; z-index: -1;
  background: rgba(15, 18, 30, 0.45);
}

/* ===== Glass ===== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.2);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.2);
  border: 1px solid var(--glass-border);
}

/* ===== Login View ===== */
.view { min-height: 100vh; }
#login-view {
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.login-card {
  width: 100%; max-width: 380px;
  padding: 40px 36px;
  border-radius: 20px;
  text-align: center;
  animation: fadeInUp 0.5s ease;
}
.login-icon svg { width: 52px; height: 52px; color: var(--accent); }
.login-title { font-size: 1.5rem; font-weight: 600; margin: 16px 0 4px; letter-spacing: 1px; }
.login-subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-bottom: 28px; }
.input-group {
  position: relative; margin-bottom: 16px;
}
.input-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%);
  display: flex; color: var(--text-tertiary);
}
.input-icon svg { width: 18px; height: 18px; }
.input-group input {
  width: 100%; padding: 12px 16px 12px 44px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.9375rem;
  transition: var(--transition);
}
.input-group input:focus {
  outline: none; border-color: var(--accent);
  background: rgba(255, 255, 255, 0.1);
}
.input-group input::placeholder { color: var(--text-tertiary); }

/* ===== Buttons ===== */
.btn-primary {
  width: 100%; padding: 12px;
  background: var(--accent-solid);
  border: none; border-radius: var(--radius-sm);
  color: #fff; font-size: 0.9375rem; font-weight: 500;
  cursor: pointer; transition: var(--transition);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { transform: scale(0.98); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-cancel {
  padding: 10px 20px; background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: 0.875rem; cursor: pointer;
  transition: var(--transition);
}
.btn-cancel:hover { background: rgba(255, 255, 255, 0.12); color: var(--text-primary); }
.btn-action {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; background: var(--glass-bg);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.875rem; cursor: pointer;
  transition: var(--transition);
}
.btn-action:hover { background: var(--glass-bg-hover); }
.btn-action svg { width: 16px; height: 16px; }
.btn-text { background: var(--accent-solid); border-color: var(--accent-solid); }
.btn-text:hover { background: var(--accent-hover); }
.login-error {
  color: var(--danger); font-size: 0.8125rem; margin-top: 12px; min-height: 18px;
}

/* ===== Dashboard Layout ===== */
#dashboard-view { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: 100;
}
.sidebar-header {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 18px;
  border-bottom: 1px solid var(--glass-border);
}
.sidebar-logo svg { width: 28px; height: 28px; color: var(--accent); }
.sidebar-title { font-size: 1.125rem; font-weight: 600; letter-spacing: 1px; }
.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; margin-bottom: 4px;
  border-radius: var(--radius-sm); cursor: pointer;
  color: var(--text-secondary); font-size: 0.9rem;
  transition: var(--transition); text-decoration: none;
}
.nav-item:hover { background: var(--glass-bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--accent-solid); color: #fff; }
.nav-icon svg { width: 18px; height: 18px; flex-shrink: 0; }
.sidebar-footer { padding: 12px 10px; border-top: 1px solid var(--glass-border); }
.btn-logout {
  display: flex; align-items: center; gap: 12px;
  width: 100%; padding: 10px 14px;
  background: transparent; border: none; border-radius: var(--radius-sm);
  color: var(--text-secondary); font-size: 0.9rem; cursor: pointer;
  transition: var(--transition);
}
.btn-logout:hover { background: rgba(224, 108, 117, 0.15); color: var(--danger); }
.btn-logout svg { width: 18px; height: 18px; }

/* Main Content */
.main-content {
  flex: 1; margin-left: var(--sidebar-w);
  padding: 0; display: flex; flex-direction: column; min-height: 100vh;
}
.main-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--glass-border);
  flex-wrap: wrap; gap: 10px;
}
.header-left { display: flex; align-items: center; gap: 10px; }
.header-title { font-size: 1.125rem; font-weight: 600; }
.header-count { color: var(--text-tertiary); font-size: 0.8125rem; }
.header-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.menu-toggle {
  display: none; width: 36px; height: 36px;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text-primary);
  cursor: pointer; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.menu-toggle svg { width: 20px; height: 20px; }
.menu-toggle:hover { background: var(--glass-bg-hover); }
.search-box {
  position: relative; display: flex; align-items: center;
}
.search-icon {
  position: absolute; left: 10px; color: var(--text-tertiary);
  display: flex;
}
.search-icon svg { width: 16px; height: 16px; }
.search-box input {
  padding: 8px 12px 8px 36px; width: 200px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.875rem;
  transition: var(--transition);
}
.search-box input:focus { outline: none; border-color: var(--accent); width: 260px; }
.search-box input::placeholder { color: var(--text-tertiary); }

/* Content Grid */
.content-grid {
  padding: 20px 24px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  align-items: start;
}
.card {
  border-radius: var(--radius); overflow: hidden;
  cursor: pointer; transition: var(--transition);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-2px); border-color: var(--accent); background: var(--glass-bg-hover); }
.card-preview {
  width: 100%; aspect-ratio: 16/10;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.25); overflow: hidden; position: relative;
}
.card-preview img { width: 100%; height: 100%; object-fit: cover; }
.card-preview video { width: 100%; height: 100%; object-fit: cover; }
.card-preview svg { width: 40px; height: 40px; color: var(--text-secondary); }
.card-preview .play-overlay {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(0, 0, 0, 0.3);
}
.card-preview .play-overlay svg { width: 36px; height: 36px; color: #fff; }
.card-body { padding: 12px 14px; }
.card-name {
  font-size: 0.8125rem; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  margin-bottom: 4px;
}
.card-meta { display: flex; align-items: center; gap: 8px; }
.card-tag {
  font-size: 0.6875rem; padding: 2px 8px;
  border-radius: 4px; background: rgba(108, 124, 224, 0.2);
  color: var(--accent); text-transform: uppercase; letter-spacing: 0.5px;
}
.card-size { font-size: 0.6875rem; color: var(--text-tertiary); }
.card-actions {
  display: flex; gap: 4px; padding: 0 8px 8px;
}
.card-action-btn {
  flex: 1; padding: 6px; background: transparent; border: none;
  color: var(--text-tertiary); cursor: pointer; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.card-action-btn:hover { background: rgba(255, 255, 255, 0.1); color: var(--text-primary); }
.card-action-btn svg { width: 15px; height: 15px; }
.card-action-btn.danger:hover { color: var(--danger); }

/* Text card */
.text-card { display: flex; flex-direction: column; }
.text-card-preview {
  padding: 16px; font-size: 0.8125rem; color: var(--text-secondary);
  line-height: 1.5; max-height: 80px; overflow: hidden;
  background: rgba(0, 0, 0, 0.2);
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1; text-align: center; padding: 60px 20px;
  color: var(--text-tertiary);
}
.empty-state svg { width: 48px; height: 48px; margin-bottom: 16px; }
.empty-state p { font-size: 0.9375rem; }

/* Pagination */
.pagination {
  display: flex; justify-content: center; align-items: center;
  gap: 6px; padding: 16px 24px 24px;
}
.page-btn {
  min-width: 36px; height: 36px; padding: 0 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--glass-bg); border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  font-size: 0.8125rem; cursor: pointer; transition: var(--transition);
}
.page-btn:hover { background: var(--glass-bg-hover); color: var(--text-primary); }
.page-btn.active { background: var(--accent-solid); color: #fff; border-color: var(--accent-solid); }
.page-btn:disabled { opacity: 0.3; cursor: not-allowed; }

/* ===== Modals ===== */
.modal-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  padding: 20px; animation: fadeIn 0.2s ease;
}
.modal {
  width: 100%; max-width: 520px;
  border-radius: 16px; overflow: hidden;
  max-height: 90vh; display: flex; flex-direction: column;
  animation: fadeInUp 0.3s ease;
}
.modal-large { max-width: 680px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; border-bottom: 1px solid var(--glass-border);
}
.modal-header h3 { font-size: 1.0625rem; font-weight: 600; }
.modal-close {
  width: 32px; height: 32px; background: transparent; border: none;
  color: var(--text-secondary); cursor: pointer; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.modal-close svg { width: 20px; height: 20px; }
.modal-close:hover { background: rgba(255, 255, 255, 0.1); color: var(--text-primary); }
.modal-body { padding: 20px 24px; overflow-y: auto; flex: 1; }
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  padding: 16px 24px; border-top: 1px solid var(--glass-border);
}

/* Form */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block; margin-bottom: 6px;
  font-size: 0.8125rem; color: var(--text-secondary);
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.875rem;
  font-family: inherit; transition: var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--accent); background: rgba(255, 255, 255, 0.1);
}
.form-group select option { background: #1a1a2e; color: #fff; }
.form-group textarea { resize: vertical; min-height: 80px; line-height: 1.5; }

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius); padding: 32px 20px;
  text-align: center; cursor: pointer; transition: var(--transition);
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent); background: rgba(108, 124, 224, 0.08);
}
.upload-icon svg { width: 40px; height: 40px; color: var(--text-secondary); margin-bottom: 8px; }
.upload-zone p { font-size: 0.9rem; color: var(--text-primary); margin-bottom: 4px; }
.upload-hint { font-size: 0.75rem; color: var(--text-tertiary); }
.upload-list { margin-top: 12px; }
.upload-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px; margin-bottom: 6px;
  background: rgba(255, 255, 255, 0.04); border-radius: var(--radius-sm);
  font-size: 0.8125rem;
}
.upload-item-name { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.upload-item-size { color: var(--text-tertiary); font-size: 0.75rem; }
.upload-item-remove {
  background: none; border: none; color: var(--text-tertiary);
  cursor: pointer; padding: 2px;
}
.upload-item-remove svg { width: 16px; height: 16px; }
.upload-item-remove:hover { color: var(--danger); }

/* Detail Modal */
.detail-preview {
  width: 100%; border-radius: var(--radius-sm); overflow: hidden;
  margin-bottom: 16px; background: rgba(0, 0, 0, 0.3);
  display: flex; align-items: center; justify-content: center;
}
.detail-preview img { width: 100%; display: block; }
.detail-preview video { width: 100%; display: block; }
.detail-preview audio { width: 100%; padding: 20px; }
.detail-preview .file-placeholder { padding: 40px; }
.detail-preview .file-placeholder svg { width: 56px; height: 56px; color: var(--text-secondary); }
.detail-info { display: flex; flex-direction: column; gap: 10px; }
.detail-row { display: flex; align-items: flex-start; gap: 12px; }
.detail-label { min-width: 70px; color: var(--text-tertiary); font-size: 0.8125rem; }
.detail-value { color: var(--text-primary); font-size: 0.875rem; flex: 1; word-break: break-all; }
.share-box {
  display: flex; gap: 8px; margin-top: 4px;
}
.share-box input {
  flex: 1; padding: 8px 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--glass-border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 0.8125rem;
}
.share-box input:focus { outline: none; border-color: var(--accent); }
.btn-copy {
  padding: 8px 16px; background: var(--accent-solid); border: none;
  border-radius: var(--radius-sm); color: #fff; font-size: 0.8125rem;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
}
.btn-copy:hover { background: var(--accent-hover); }
.share-tab {
  padding: 6px 14px; background: var(--glass-bg);
  border: 1px solid var(--glass-border); border-radius: 6px;
  color: var(--text-secondary); font-size: 0.75rem;
  cursor: pointer; transition: var(--transition);
}
.share-tab:hover { background: var(--accent-solid); color: #fff; border-color: var(--accent-solid); }

/* Toast */
.toast {
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(100px);
  padding: 12px 24px; border-radius: var(--radius-sm);
  background: rgba(20, 22, 35, 0.9); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border); color: #fff;
  font-size: 0.875rem; z-index: 300;
  opacity: 0; transition: all 0.3s ease; pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }
.toast.success { border-color: rgba(108, 200, 130, 0.4); }
.toast.error { border-color: rgba(224, 108, 117, 0.4); }

/* Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }

/* Loading spinner */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .sidebar { transform: translateX(-100%); transition: transform 0.3s; width: 220px; }
  .sidebar.open { transform: translateX(0); box-shadow: 4px 0 24px rgba(0,0,0,0.4); }
  .main-content { margin-left: 0; }
  .menu-toggle { display: flex; }
  .main-header { padding: 12px; flex-wrap: wrap; }
  .header-left { flex: 1; min-width: 0; }
  .header-title { font-size: 1rem; }
  .header-right { width: 100%; justify-content: flex-end; gap: 8px; }
  .search-box { flex: 1; }
  .search-box input { width: 100%; }
  .search-box input:focus { width: 100%; }
  .btn-action { padding: 8px 12px; flex-shrink: 0; }
  .btn-action span:not(.btn-icon) { display: none; }
  .content-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; padding: 12px; }
  .modal-overlay { padding: 12px; }
  .modal { max-height: 95vh; }
  .modal-body { padding: 16px; }
  .modal-header { padding: 14px 16px; }
  .modal-footer { padding: 12px 16px; }
}
@media (max-width: 380px) {
  .content-grid { grid-template-columns: 1fr; }
  .header-right { gap: 6px; }
}