/* ==========================================================
   WeTab 云版 · 样式表
   设计基调：毛玻璃卡片 + 柔和渐变 + 大留白
   ========================================================== */

:root {
  --bg-img: none;
  --overlay: 0.42;

  --glass-bg: rgba(255, 255, 255, .58);
  --glass-brd: rgba(255, 255, 255, .75);
  --glass-blur: 22px;

  --txt: #16181d;
  --txt-2: rgba(22, 24, 29, .62);
  --txt-3: rgba(22, 24, 29, .40);

  --card: rgba(255, 255, 255, .62);
  --card-hover: rgba(255, 255, 255, .86);

  --accent: #5b6cff;
  --accent-2: #8b5bff;
  --danger: #e5484d;

  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 20px;
  --r-xl: 26px;

  --shadow-sm: 0 2px 10px rgba(15, 20, 40, .07);
  --shadow-md: 0 8px 28px rgba(15, 20, 40, .13);
  --shadow-lg: 0 24px 60px rgba(15, 20, 40, .22);

  --tile-radius: 16px;

  --col: 5;
  --icon: 64px;
  --gap: 14px;
}

/* 深色文字 + 浅色玻璃（默认） */

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

html { height: 100%; }

body {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
               "Helvetica Neue", "Source Han Sans SC", sans-serif;
  color: var(--txt);
  background: #dfe3ef;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  position: relative;
}

.hidden { display: none !important; }

/* ---------------- 背景 ---------------- */

.bg {
  position: fixed;
  inset: -40px;
  background: var(--bg-img);
  background-size: cover;
  background-position: center;
  z-index: -2;
  transition: background .4s ease;
}

.bg-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 20, var(--overlay));
  z-index: -1;
  pointer-events: none;
}

/* ---------------- 顶栏 ---------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 16px 26px 10px;
}

.topbar-left  { flex: 0 0 auto; min-width: 132px; }
.topbar-center{ flex: 1 1 auto; display: flex; justify-content: center; }
.topbar-right { flex: 0 0 auto; display: flex; align-items: center; gap: 9px; min-width: 132px; justify-content: flex-end; }

/* 时钟 */
.clock { user-select: none; line-height: 1.15; }
.clock-time {
  font-size: 26px;
  font-weight: 300;
  letter-spacing: .5px;
  font-variant-numeric: tabular-nums;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,.35);
}
.clock-date {
  font-size: 12px;
  color: rgba(255,255,255,.78);
  text-shadow: 0 1px 8px rgba(0,0,0,.35);
}

/* 搜索栏 */
.searchbar {
  display: flex;
  align-items: center;
  gap: 9px;
  width: min(560px, 100%);
  padding: 9px 12px 9px 15px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  border-radius: 999px;
  backdrop-filter: blur(var(--glass-blur)) saturate(1.5);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, background .2s;
}
.searchbar:focus-within {
  background: var(--card-hover);
  box-shadow: 0 0 0 3px rgba(91,108,255,.28), var(--shadow-md);
}
.search-icon { width: 17px; height: 17px; color: var(--txt-2); flex: 0 0 auto; }
.searchbar input {
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 14px;
  color: var(--txt);
  min-width: 0;
}
.searchbar input::placeholder { color: var(--txt-3); }

.engine-select {
  border: 0;
  outline: 0;
  background: rgba(0,0,0,.05);
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 12px;
  color: var(--txt-2);
  cursor: pointer;
  font-family: inherit;
}

/* 按钮 */
.btn {
  border: 0;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 999px;
  transition: transform .12s, box-shadow .18s, background .18s, opacity .18s;
  white-space: nowrap;
}
.btn:active { transform: scale(.96); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 14px rgba(91,108,255,.36);
}
.btn-primary:hover { box-shadow: 0 6px 20px rgba(91,108,255,.48); }
.btn-ghost {
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  color: var(--txt);
  backdrop-filter: blur(12px);
}
.btn-ghost:hover { background: var(--card-hover); }
.btn-danger { background: rgba(229,72,77,.12); color: var(--danger); }
.btn-danger:hover { background: rgba(229,72,77,.2); }
.btn-block { width: 100%; padding: 11px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.icon-btn {
  position: relative;
  width: 36px; height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--glass-brd);
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  border-radius: 50%;
  cursor: pointer;
  color: var(--txt);
  transition: background .18s, transform .12s;
}
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn:hover { background: var(--card-hover); }
.icon-btn:active { transform: scale(.92); }
.icon-btn.spinning svg { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.sync-dot {
  position: absolute;
  top: 4px; right: 4px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #30c76f;
  box-shadow: 0 0 0 2px rgba(255,255,255,.85);
  transition: background .3s;
}
.sync-dot.syncing { background: #f5a524; animation: pulse 1s ease-in-out infinite; }
.sync-dot.offline { background: var(--danger); }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

/* 用户 */
.auth-area { display: flex; align-items: center; gap: 8px; }

.user-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 6px 4px 4px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  border-radius: 999px;
  backdrop-filter: blur(14px);
}
.user-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-size: 13px;
  font-weight: 600;
}
.user-name { font-size: 13px; max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-logout {
  border: 0; background: rgba(0,0,0,.06);
  font-size: 11px; padding: 4px 9px;
  border-radius: 999px; cursor: pointer;
  color: var(--txt-2); font-family: inherit;
}
.user-logout:hover { background: rgba(229,72,77,.14); color: var(--danger); }

/* ---------------- 分组栏 ---------------- */

.folder-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 26px 4px;
  overflow-x: auto;
  scrollbar-width: none;
}
.folder-bar::-webkit-scrollbar { display: none; }

.folder-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 15px;
  border-radius: 999px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-brd);
  backdrop-filter: blur(14px);
  font-size: 13px;
  color: var(--txt-2);
  cursor: pointer;
  white-space: nowrap;
  transition: all .18s;
  user-select: none;
}
.folder-chip:hover { background: var(--card-hover); color: var(--txt); }
.folder-chip.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(91,108,255,.34);
}
.folder-chip .cnt {
  font-size: 11px;
  opacity: .72;
  padding: 0 5px;
  border-radius: 999px;
  background: rgba(0,0,0,.07);
}
.folder-chip.active .cnt { background: rgba(255,255,255,.24); }

.folder-manage-btn {
  border: 1px dashed var(--glass-brd);
  background: transparent;
  color: var(--txt-2);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  font-family: inherit;
}
.folder-manage-btn:hover { background: var(--glass-bg); color: var(--txt); }

/* ---------------- 网格 ---------------- */

.main {
  padding: 12px 26px 70px;
  max-width: 1560px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--col), minmax(0, 1fr));
  gap: var(--gap);
  align-content: start;
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 16px 8px 13px;
  border-radius: var(--tile-radius);
  text-decoration: none;
  color: inherit;
  transition: transform .16s cubic-bezier(.34,1.4,.64,1), background .2s, box-shadow .2s;
  background: var(--card);
  border: 1px solid rgba(255,255,255,.5);
  backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4);
  cursor: pointer;
  user-select: none;
  animation: tileIn .32s cubic-bezier(.34,1.3,.64,1) backwards;
}
@keyframes tileIn { from { opacity: 0; transform: translateY(12px) scale(.94); } }

.tile:hover {
  transform: translateY(-4px);
  background: var(--card-hover);
  box-shadow: var(--shadow-md);
}

.tile-icon {
  width: var(--icon);
  height: var(--icon);
  border-radius: calc(var(--icon) * .26);
  display: grid;
  place-items: center;
  font-size: calc(var(--icon) * .44);
  font-weight: 700;
  color: #fff;
  overflow: hidden;
  background: linear-gradient(135deg, #7b8cff, #a86bff);
  box-shadow: 0 4px 14px rgba(80,90,180,.24), inset 0 1px 0 rgba(255,255,255,.32);
  flex: 0 0 auto;
}
.tile-icon img { width: 100%; height: 100%; object-fit: cover; }

.tile-title {
  font-size: 12.5px;
  text-align: center;
  line-height: 1.35;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--txt);
  font-weight: 500;
}

/* 图标样式：玻璃 / 纯图标 */
body[data-icon-style="glass"] .tile { background: rgba(255,255,255,.28); }
body[data-icon-style="glass"] .tile-icon { border-radius: 50%; box-shadow: 0 4px 16px rgba(80,90,180,.2); }
body[data-icon-style="plain"] .tile { background: transparent; border-color: transparent; backdrop-filter: none; }
body[data-icon-style="plain"] .tile:hover { background: var(--glass-bg); }
body[data-icon-style="plain"] .tile-icon { border-radius: 20%; box-shadow: none; }

/* 编辑按钮 */
.tile-edit {
  position: absolute;
  top: 5px; right: 5px;
  width: 20px; height: 20px;
  border-radius: 50%;
  border: 0;
  background: rgba(0,0,0,.32);
  color: #fff;
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity .18s;
  display: grid;
  place-items: center;
}
.tile:hover .tile-edit { opacity: 1; }
.tile-edit:hover { background: var(--accent); }

/* 拖拽排序 */
.tile.dragging { opacity: .35; }
.tile.drop-target { box-shadow: 0 0 0 3px rgba(91,108,255,.6); }

/* 空状态 */
.empty { text-align: center; padding: 70px 20px; color: #fff; text-shadow: 0 2px 12px rgba(0,0,0,.4); }
.empty-icon { font-size: 54px; margin-bottom: 14px; }
.empty-title { font-size: 17px; margin-bottom: 6px; font-weight: 500; }
.empty-sub { font-size: 13px; opacity: .78; }

/* ---------------- 状态栏 ---------------- */

.statusbar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  padding: 9px 26px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: rgba(255,255,255,.7);
  text-shadow: 0 1px 8px rgba(0,0,0,.4);
  background: linear-gradient(to top, rgba(0,0,0,.2), transparent);
  pointer-events: none;
  z-index: 40;
}
.status-sep { opacity: .5; }

/* ---------------- 弹窗 ---------------- */

.modal-mask {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(12, 14, 24, .42);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
  display: grid;
  place-items: center;
  padding: 22px;
  animation: fadeIn .18s ease;
}
@keyframes fadeIn { from { opacity: 0; } }

.modal {
  width: min(560px, 100%);
  max-height: 88vh;
  overflow-y: auto;
  background: rgba(252, 253, 255, .97);
  border-radius: var(--r-xl);
  box-shadow: var(--shadow-lg);
  padding: 24px 26px 26px;
  animation: modalIn .26s cubic-bezier(.34,1.36,.64,1);
}
.modal-sm { width: min(410px, 100%); }
@keyframes modalIn { from { opacity: 0; transform: translateY(18px) scale(.96); } }

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.modal-head h2 { font-size: 18px; font-weight: 600; }
.modal-close {
  border: 0;
  background: rgba(0,0,0,.055);
  width: 28px; height: 28px;
  border-radius: 50%;
  font-size: 19px;
  line-height: 1;
  cursor: pointer;
  color: var(--txt-2);
}
.modal-close:hover { background: rgba(229,72,77,.15); color: var(--danger); }

/* 表单 */
.form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--txt-2); }
.field > span { font-weight: 500; }
.field input[type="text"],
.field input[type="password"],
.field select {
  border: 1px solid rgba(0,0,0,.11);
  background: #fff;
  border-radius: var(--r-md);
  padding: 10px 13px;
  font-size: 14px;
  font-family: inherit;
  color: var(--txt);
  outline: 0;
  transition: border-color .18s, box-shadow .18s;
  width: 100%;
}
.field input:focus, .field select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(91,108,255,.16);
}
.field input[type="range"] { width: 100%; accent-color: var(--accent); }
.field input[type="color"] {
  width: 100%; height: 40px; padding: 3px;
  border: 1px solid rgba(0,0,0,.11);
  border-radius: var(--r-md);
  background: #fff;
  cursor: pointer;
}
.field input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-row-inline { display: flex; gap: 9px; }
.form-row-inline input { flex: 1; }

.form-err {
  background: rgba(229,72,77,.1);
  color: var(--danger);
  padding: 9px 13px;
  border-radius: var(--r-sm);
  font-size: 12.5px;
}
.form-tip { font-size: 11.5px; color: var(--txt-3); line-height: 1.6; }

.modal-actions { display: flex; gap: 9px; align-items: center; margin-top: 4px; }
.spacer { flex: 1; }

.tabs { display: flex; gap: 6px; background: rgba(0,0,0,.05); padding: 4px; border-radius: var(--r-md); margin-bottom: 16px; }
.tab {
  flex: 1;
  border: 0; background: transparent;
  padding: 8px; border-radius: var(--r-sm);
  font-size: 13.5px; cursor: pointer;
  color: var(--txt-2); font-family: inherit;
  transition: all .18s;
}
.tab.active { background: #fff; color: var(--txt); font-weight: 600; box-shadow: var(--shadow-sm); }

/* 分段控件 */
.seg { display: flex; gap: 5px; background: rgba(0,0,0,.05); padding: 4px; border-radius: var(--r-md); }
.seg-item {
  flex: 1; border: 0; background: transparent;
  padding: 7px; border-radius: var(--r-sm);
  font-size: 12.5px; cursor: pointer; color: var(--txt-2); font-family: inherit;
}
.seg-item.active { background: #fff; color: var(--txt); font-weight: 600; box-shadow: var(--shadow-sm); }

/* 渐变预设 */
.preset-row { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 4px; }
.preset {
  width: 34px; height: 22px;
  border-radius: 7px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .14s, border-color .18s;
}
.preset:hover { transform: scale(1.12); }
.preset.active { border-color: var(--accent); }

/* 分组管理列表 */
.folder-manage { list-style: none; display: flex; flex-direction: column; gap: 7px; }
.folder-manage li {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 13px;
  background: rgba(0,0,0,.035);
  border-radius: var(--r-md);
  font-size: 13.5px;
}
.folder-manage .fm-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.folder-manage .fm-cnt { font-size: 11px; color: var(--txt-3); }
.mini-btn {
  border: 0; background: rgba(0,0,0,.06);
  border-radius: 7px; padding: 4px 10px;
  font-size: 11.5px; cursor: pointer; color: var(--txt-2); font-family: inherit;
}
.mini-btn:hover { background: rgba(91,108,255,.16); color: var(--accent); }
.mini-btn.danger:hover { background: rgba(229,72,77,.15); color: var(--danger); }

/* ---------------- Toast ---------------- */

.toast-wrap {
  position: fixed;
  bottom: 44px; left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  display: flex; flex-direction: column; gap: 8px;
  align-items: center;
  pointer-events: none;
}
.toast {
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(20,22,30,.9);
  color: #fff;
  font-size: 13px;
  box-shadow: var(--shadow-md);
  animation: toastIn .24s cubic-bezier(.34,1.4,.64,1);
  max-width: 80vw;
}
.toast.err { background: rgba(190,40,45,.94); }
.toast.ok  { background: rgba(28,140,80,.94); }
@keyframes toastIn { from { opacity: 0; transform: translateY(14px); } }

/* ---------------- 响应式 ---------------- */

@media (max-width: 900px) {
  .topbar { flex-wrap: wrap; gap: 12px; padding: 13px 16px 8px; }
  .topbar-left { min-width: auto; order: 2; }
  .topbar-center { order: 1; flex: 1 0 100%; }
  .topbar-right { order: 3; }
  .clock-time { font-size: 20px; }
  .folder-bar, .main { padding-left: 16px; padding-right: 16px; }
  .modal { padding: 20px; border-radius: var(--r-lg); }
  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .user-name { display: none; }
  #topAddBtn { padding: 8px 12px; font-size: 12px; }
  .tile-title { font-size: 11.5px; }
}