:root {
  --text: #1f2937;
  --muted: #6b7280;
  --card: rgba(255,255,255,.86);
  --border: rgba(15,23,42,.08);
  --accent: #3b82f6;
  --accent-soft: rgba(59,130,246,.12);
  --shadow: 0 4px 16px rgba(15,23,42,.05);
  --max: 900px;
  --row-h: 40px;
  --hero-pad-top: 28px;
  --font: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--page-bg, #f6f8fb);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.desktop-fill { overflow: hidden; }
button, input, select { font: inherit; }
a { color: inherit; text-decoration: none; }

.wrap {
  width: min(100% - 28px, var(--max));
  margin: 0 auto;
}
body.desktop-fill .wrap {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-bottom: 0;
}

.hero { text-align: center; padding: var(--hero-pad-top) 0 0; flex: 0 0 auto; }
.clock {
  font-size: 34px;
  font-weight: 300; letter-spacing: .03em; line-height: 1.05;
  font-variant-numeric: tabular-nums;
}
.date-line { margin-top: 4px; color: var(--muted); font-size: .88rem; }

.search { width: min(100%, 560px); margin: 14px auto 6px; position: relative; flex: 0 0 auto; }
.search-box {
  display: flex; align-items: stretch; min-height: 42px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 999px; box-shadow: var(--shadow); overflow: hidden;
}
.engine-btn {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 0 10px 0 14px; border: 0; border-right: 1px solid var(--border);
  background: transparent; cursor: pointer; color: var(--text); white-space: nowrap;
  font-size: .9rem;
}
.engine-btn svg { width: 11px; height: 11px; opacity: .55; }
.search-input {
  flex: 1; min-width: 0; border: 0; outline: none; background: transparent;
  padding: 0 12px; font-size: .95rem; color: var(--text);
}
.search-go {
  min-width: 64px; border: 0; background: var(--accent); color: #fff;
  cursor: pointer; padding: 0 14px; font-weight: 600; font-size: .9rem;
}
.engine-panel {
  display: none; position: absolute; left: 0; right: 0; top: calc(100% + 6px);
  background: #fff; border: 1px solid var(--border); border-radius: 12px;
  box-shadow: var(--shadow); padding: 8px; z-index: 20;
  grid-template-columns: repeat(3, 1fr); gap: 6px;
}
.engine-panel.open { display: grid; }
.engine-item {
  min-height: 36px; border: 1px solid transparent; border-radius: 8px;
  background: transparent; cursor: pointer; font-size: .88rem;
}
.engine-item.active, .engine-item:hover {
  background: var(--accent-soft); color: var(--accent); border-color: rgba(59,130,246,.25);
}

.tabs {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px;
  list-style: none; padding: 10px 0 6px; margin: 0; flex: 0 0 auto;
}
.tabs button {
  min-height: 32px; padding: 0 14px; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; background: transparent; color: var(--muted);
  font-size: .9rem;
}
.tabs button.active, .tabs button:hover {
  background: var(--accent-soft); color: var(--accent);
  border-color: rgba(59,130,246,.2);
}

.grid-stage {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-height: 0;
}
.grid-stage.is-centered { justify-content: center; }
.grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  column-gap: 10px;
  row-gap: 0;
  padding: 4px 0;
  width: 100%;
}
.site {
  display: flex; flex-direction: row; align-items: center; gap: 7px;
  height: var(--row-h);
  min-height: var(--row-h);
  padding: 0 4px;
  border-radius: 6px;
  overflow: hidden;
}
.site:hover { background: rgba(255,255,255,.55); }
.site-ico, .site-fb {
  width: 16px; height: 16px; border-radius: 3px; flex-shrink: 0;
  object-fit: contain;
}
.site-fb {
  display: grid; place-items: center; color: var(--accent);
  font-weight: 700; font-size: 10px; background: #eff6ff;
}
.site-name {
  font-size: .86rem; line-height: 1.15; min-width: 0;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.footer {
  text-align: center; color: var(--muted); font-size: .78rem;
  padding: 8px 0 14px; border-top: 1px solid var(--border);
  flex: 0 0 auto;
}
body.desktop-fill .footer {
  min-height: 64px;
  height: 70px;
  padding: 8px 0 12px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.foot-links {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center;
  gap: 4px; margin-bottom: 2px;
}
.foot-links button {
  border: 0; background: transparent; color: var(--muted);
  cursor: pointer; min-height: 28px; padding: 0 4px; font-size: .78rem;
}
.foot-links button:hover { color: var(--accent); }
.foot-links .sep { opacity: .45; }

/* mobile: turn off fill layout behaviors via media */
@media (max-width: 700px) {
  body.desktop-fill { overflow: auto; }
  body.desktop-fill .wrap {
    min-height: 0;
    display: block;
  }
  .grid-stage { display: block; }
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 6px; row-gap: 6px;
  }
  .site { min-height: 40px; height: 40px; }
  .clock { font-size: 30px; }
  .hero { padding: 18px 0 4px; }
  .search { margin: 12px auto 6px; }
  .search-box { min-height: 44px; }
  .tabs { padding: 10px 0 6px; }
  .tabs button { min-height: 36px; }
  .engine-panel { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 701px) and (max-width: 900px) {
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

.modal-mask {
  position: fixed; inset: 0; background: rgba(15,23,42,.35);
  display: none; align-items: center; justify-content: center; z-index: 50; padding: 16px;
}
.modal-mask.open { display: flex; }
.modal {
  width: min(100%, 420px); background: #fff; border-radius: 16px;
  box-shadow: var(--shadow); padding: 18px; max-height: 90vh; overflow: auto;
}
.modal h3 { margin: 0 0 12px; font-size: 1.1rem; }
.modal label { display: block; font-size: .85rem; color: var(--muted); margin: 10px 0 4px; }
.modal input, .modal select, .modal textarea {
  width: 100%; min-height: 40px; border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 10px; background: #fff;
}
.modal textarea { min-height: 140px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.modal-actions button, .manage-foot button, .mgr-cat-actions button, .mgr-add-site {
  min-height: 40px; padding: 0 14px; border-radius: 10px; cursor: pointer;
  border: 1px solid var(--border); background: #fff;
}
.modal-actions .primary, .manage-foot .primary, .mgr-add-site {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
.bg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.bg-opt {
  min-height: 56px; border-radius: 12px; border: 2px solid transparent; cursor: pointer;
  display: grid; place-items: end start; padding: 8px; color: #334155; font-size: .8rem;
}
.bg-opt.active { border-color: var(--accent); }

/* manage panel */
.manage-mask {
  position: fixed; inset: 0; background: rgba(15,23,42,.45);
  display: none; z-index: 60; padding: 16px;
  align-items: stretch; justify-content: center;
}
.manage-mask.open { display: flex; }
.manage-shell {
  width: min(100%, 1100px); max-height: calc(100vh - 32px);
  background: #fff; border-radius: 16px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; overflow: hidden; margin: auto;
}
.manage-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--border);
}
.manage-head h2 { margin: 0; font-size: 1.15rem; }
.manage-close {
  width: 40px; height: 40px; border: 0; border-radius: 10px;
  background: #f3f4f6; cursor: pointer; font-size: 22px; line-height: 1;
}
.manage-body {
  flex: 1; min-height: 0; display: grid;
  grid-template-columns: 220px 1fr; overflow: hidden;
}
.manage-cats {
  border-right: 1px solid var(--border); padding: 12px;
  display: flex; flex-direction: column; gap: 10px; overflow: auto;
  background: #fafbfc;
}
.manage-cats-title, .manage-sites-title {
  font-size: .8rem; color: var(--muted); font-weight: 600;
}
#mgr-cat-list { list-style: none; margin: 0; padding: 0; flex: 1; }
#mgr-cat-list li button {
  width: 100%; text-align: left; min-height: 40px; padding: 0 10px;
  border: 1px solid transparent; border-radius: 10px; background: transparent;
  cursor: pointer; color: var(--text);
}
#mgr-cat-list li button.active {
  background: var(--accent-soft); color: var(--accent); border-color: rgba(59,130,246,.25);
}
.mgr-cat-actions { display: flex; flex-wrap: wrap; gap: 6px; }
.mgr-cat-actions button { min-height: 34px; padding: 0 8px; font-size: .82rem; }
.mgr-cat-actions .danger, .manage-foot .danger, button.danger { color: #b91c1c; }

.manage-sites {
  padding: 12px 14px; overflow: auto; display: flex; flex-direction: column; gap: 10px;
}
.mgr-table-wrap { flex: 1; }
.mgr-row {
  display: grid;
  grid-template-columns: minmax(100px,1fr) minmax(160px,1.6fr) 140px auto;
  gap: 8px; align-items: center;
  padding: 8px; border: 1px solid var(--border); border-radius: 12px;
  margin-bottom: 8px; background: #fff;
}
.mgr-row input, .mgr-row select {
  width: 100%; min-height: 40px; border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 8px;
}
.mgr-row-actions { display: flex; gap: 4px; flex-wrap: wrap; }
.mgr-row-actions button {
  min-width: 36px; min-height: 36px; border: 1px solid var(--border);
  border-radius: 8px; background: #f8fafc; cursor: pointer;
}
.mgr-add-site { align-self: flex-start; }

.manage-foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px;
  padding: 12px 16px; border-top: 1px solid var(--border); background: #fafbfc;
}
.manage-foot-left, .manage-foot-right { display: flex; flex-wrap: wrap; gap: 8px; }

@media (max-width: 1100px) {
  .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(4, minmax(0, 1fr)); row-gap: 6px; }
  .manage-body { grid-template-columns: 1fr; }
  .manage-cats { border-right: 0; border-bottom: 1px solid var(--border); max-height: 180px; }
  .clock { font-size: 32px; }
}
@media (max-width: 560px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 6px; row-gap: 6px;
  }
  .site { min-height: 40px; height: 40px; }
  .clock { font-size: 30px; }
  .hero { padding: 18px 0 4px; }
  .search { margin: 12px auto 6px; }
  .search-box { min-height: 44px; }
  .tabs { padding: 10px 0 6px; }
  .tabs button { min-height: 36px; }
  .engine-panel { grid-template-columns: repeat(2, 1fr); }
  .mgr-row { grid-template-columns: 1fr; gap: 6px; }
  .manage-foot { flex-direction: column; }
  .manage-foot-right { width: 100%; }
  .manage-foot-right button { flex: 1; }
}