/* ============================================================
   Minimalist Navigation — Design System
   ============================================================ */

:root {
  --bg:        #f5f5f7;
  --surface:   rgba(255,255,255,.78);
  --card:      rgba(255,255,255,.72);
  --hover:     rgba(0,0,0,.04);
  --active:    rgba(0,102,255,.07);
  --text:      #1d1d1f;
  --text2:     #6e6e73;
  --text3:     #aeaeb2;
  --accent:    #0071e3;
  --accent2:   rgba(0,113,227,.12);
  --shadow:    0 2px 12px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.1);
  --border:    rgba(0,0,0,.06);
  --radius:    14px;
  --radius-sm: 10px;
  --font:      -apple-system, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

[data-theme="dark"] {
  --bg:        #1c1c1e;
  --surface:   rgba(44,44,46,.78);
  --card:      rgba(44,44,46,.75);
  --hover:     rgba(255,255,255,.06);
  --active:    rgba(0,113,227,.18);
  --text:      #f5f5f7;
  --text2:     #98989d;
  --text3:     #636366;
  --accent:    #0a84ff;
  --accent2:   rgba(10,132,255,.18);
  --shadow:    0 2px 12px rgba(0,0,0,.2);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.35);
  --border:    rgba(255,255,255,.07);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box }
html { font-size:16px; -webkit-font-smoothing:antialiased }
body {
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  transition:background .4s, color .4s;
  position:relative;
}
/* ===== 毛玻璃渐变默认壁纸 ===== */
body::before {
  content:"";
  position:fixed; inset:0; z-index:-1;
  background:
    radial-gradient(ellipse 80% 60% at 0% 20%, rgba(180,210,255,.4) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 80%, rgba(200,160,255,.3) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(255,210,180,.18) 0%, transparent 50%);
  transition:opacity .5s;
}
[data-theme="dark"] body::before {
  background:
    radial-gradient(ellipse 80% 60% at 0% 20%, rgba(50,80,180,.3) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 100% 80%, rgba(100,50,180,.25) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(180,100,50,.1) 0%, transparent 50%);
}
body.has-wallpaper::before { opacity:0 }
a { text-decoration:none; color:inherit }
button, input { font:inherit; border:none; outline:none; background:none }
::-webkit-scrollbar { width:5px }
::-webkit-scrollbar-thumb { background:var(--text3); border-radius:3px }

/* ============================================================
   Layout
   ============================================================ */
.page {
  max-width:700px;
  margin:0 auto;
  padding:56px 24px 0;
  display:flex;
  flex-direction:column;
  height:100vh;
}

/* ============================================================
   Search
   ============================================================ */
.search { margin-bottom:36px; position:relative }
.search__box {
  display:flex;
  align-items:center;
  gap:10px;
  background:var(--surface);
  backdrop-filter:blur(16px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:4px 4px 4px 14px;
  box-shadow:var(--shadow);
  transition:box-shadow .25s, border-color .25s;
}
.search__box:focus-within {
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent2), var(--shadow);
}
.search__engine {
  width:30px; height:30px; border-radius:50%;
  object-fit:cover; cursor:pointer; flex-shrink:0;
  transition:transform .2s;
}
.search__engine:hover { transform:scale(1.12) }
.search__input {
  flex:1; height:42px; font-size:.95rem;
  color:var(--text); background:transparent; min-width:0;
}
.search__input::placeholder { color:var(--text3) }
.search__btn {
  width:38px; height:38px; display:flex; align-items:center; justify-content:center;
  background:var(--accent); color:#fff;
  border-radius:var(--radius-sm); cursor:pointer; flex-shrink:0;
  transition:transform .2s, box-shadow .2s;
}
.search__btn:hover { transform:scale(1.05); box-shadow:0 4px 12px rgba(0,113,227,.3) }
.search__btn svg { width:18px; height:18px; display:block }

/* dropdown */
.search__dropdown {
  position:absolute; top:calc(100% + 4px); left:0; right:0;
  background:var(--surface); backdrop-filter:blur(20px);
  border:1px solid var(--border); border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg); padding:6px;
  opacity:0; visibility:hidden; transform:translateY(-4px);
  transition:all .2s; z-index:100;
}
.search__dropdown.open { opacity:1; visibility:visible; transform:translateY(0) }
.search-engine-option {
  display:flex; align-items:center; gap:8px;
  padding:8px 10px; border-radius:8px;
  cursor:pointer; transition:background .15s; font-size:.88rem;
}
.search-engine-option:hover { background:var(--hover) }
.search-engine-option.active { background:var(--accent2); font-weight:600; color:var(--accent) }
.search-engine-option img { width:20px; height:20px; border-radius:50% }

/* ============================================================
   Bookmarks
   ============================================================ */
.bookmarks { flex:1; min-height:0; overflow-y:auto; padding-bottom:32px }
.bookmarks__head {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:16px;
}
.bookmarks__title {
  font-size:.72rem; font-weight:600; text-transform:uppercase;
  letter-spacing:.08em; color:var(--text3);
}
.bookmarks__actions { display:flex; gap:4px }
.bookmarks__action {
  width:30px; height:30px; display:flex; align-items:center; justify-content:center;
  border-radius:8px; cursor:pointer; color:var(--text3); font-size:16px;
  transition:background .15s, color .15s;
}
.bookmarks__action:hover { background:var(--hover); color:var(--text) }

/* Grid */
.bookmarks__grid {
  display:grid;
  grid-template-columns:repeat(auto-fill, minmax(110px,1fr));
  gap:10px;
}

/* Card */
.bm-card {
  display:flex; flex-direction:column; align-items:center; gap:10px;
  padding:24px 12px 16px;
  background:var(--card); backdrop-filter:blur(12px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  cursor:pointer; transition:all .25s; position:relative;
}
.bm-card:hover {
  background:var(--surface);
  box-shadow:var(--shadow-lg);
  transform:translateY(-3px);
}
.bm-card:active { transform:scale(.97) }
.bm-card__img {
  width:40px; height:40px; border-radius:10px; object-fit:cover;
}
.bm-card__name {
  font-size:.8rem; font-weight:500; color:var(--text2);
  text-align:center; max-width:100%;
  white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
}
.bm-card__del {
  position:absolute; top:6px; right:6px;
  width:22px; height:22px; display:flex; align-items:center; justify-content:center;
  border-radius:6px; font-size:11px; color:var(--text3);
  opacity:0; transition:opacity .2s, background .15s; cursor:pointer;
}
.bm-card:hover .bm-card__del { opacity:1 }
.bm-card__del:hover { background:rgba(239,68,68,.12); color:#ef4444 }

/* Add card (dashed) */
.bm-card--add {
  border:2px dashed var(--border);
  background:transparent; backdrop-filter:none;
  justify-content:center; padding:28px 12px 20px;
}
.bm-card--add:hover { background:var(--card); box-shadow:none; transform:none }
.bm-card--add .bm-card__img { width:28px; height:28px; border-radius:0; opacity:.5 }
.bm-card--add .bm-card__name { color:var(--text3); font-size:.75rem }

/* Empty */
.bm-empty {
  grid-column:1/-1; text-align:center;
  padding:48px 16px; color:var(--text3); font-size:.85rem;
}

/* ============================================================
   Bookmark Form
   ============================================================ */
.bookmarks__form {
  background:var(--surface); backdrop-filter:blur(12px);
  border:1px solid var(--border);
  border-radius:var(--radius); padding:20px;
  margin-bottom:16px; display:none;
}
.bookmarks__form.open { display:block; animation:fade .2s ease }
.bm-field { margin-bottom:14px }
.bm-field:last-of-type { margin-bottom:16px }
.bm-field label {
  display:block; font-size:.75rem; font-weight:500;
  color:var(--text2); margin-bottom:4px;
}
.bm-field input {
  width:100%; padding:9px 12px; border-radius:8px;
  border:1px solid var(--border); background:var(--bg-hover, rgba(0,0,0,.03));
  color:var(--text); font-size:.88rem; transition:border .2s;
}
[data-theme="dark"] .bm-field input { background:rgba(255,255,255,.05) }
.bm-field input:focus { border-color:var(--accent) }

.bm-actions { display:flex; gap:8px }
.bm-btn {
  flex:1; padding:9px; border-radius:8px;
  font-weight:500; cursor:pointer; font-size:.82rem;
  transition:opacity .2s, background .2s;
}
.bm-btn--primary { background:var(--accent); color:#fff }
.bm-btn--primary:hover { opacity:.88 }
.bm-btn--ghost {
  border:1px solid var(--border); color:var(--text2);
}
.bm-btn--ghost:hover { border-color:var(--accent); color:var(--accent) }
.bm-btn--danger {
  background:rgba(239,68,68,.1); color:#ef4444;
}
.bm-btn--danger:hover { background:rgba(239,68,68,.18) }

/* ============================================================
   Settings Gear
   ============================================================ */
.gear {
  position:fixed; top:20px; right:20px; z-index:100;
  width:34px; height:34px;
  display:flex; align-items:center; justify-content:center;
  background:var(--surface); backdrop-filter:blur(12px);
  border:1px solid var(--border);
  border-radius:50%; cursor:pointer;
  color:var(--text3); transition:all .25s;
  box-shadow:var(--shadow);
}
.gear:hover { color:var(--text); box-shadow:var(--shadow-lg); transform:scale(1.06) }
.gear svg { width:18px; height:18px; display:block; transition:transform .4s }
.gear.active svg { transform:rotate(60deg) }

.settings-overlay {
  position:fixed; inset:0; z-index:99;
  opacity:0; visibility:hidden;
  transition:all .3s;
}
.settings-overlay.open { opacity:1; visibility:visible }

.settings {
  position:fixed; top:66px; right:20px; z-index:100;
  width:280px; max-height:calc(100vh - 100px); overflow-y:auto;
  background:var(--surface); backdrop-filter:blur(24px);
  border:1px solid var(--border);
  border-radius:var(--radius); padding:20px;
  box-shadow:var(--shadow-lg);
  opacity:0; visibility:hidden; transform:translateY(-6px);
  transition:all .25s;
}
.settings.open { opacity:1; visibility:visible; transform:translateY(0) }

.s-group { margin-bottom:16px }
.s-group:last-child { margin-bottom:0 }
.s-label {
  font-size:.68rem; font-weight:600; text-transform:uppercase;
  letter-spacing:.06em; color:var(--text3); margin-bottom:8px;
}
.s-row { display:flex; gap:6px; flex-wrap:wrap }
.s-btn {
  padding:6px 14px; border-radius:8px;
  font-size:.8rem; font-weight:500; cursor:pointer;
  transition:all .15s;
  border:1px solid var(--border);
  color:var(--text2);
}
.s-btn:hover { border-color:var(--accent); color:var(--text) }
.s-btn.active { background:var(--accent); color:#fff; border-color:var(--accent) }
.s-btn.s-danger { color:#ef4444 }
.s-btn.s-danger:hover { border-color:#ef4444 }

.s-url-row { display:flex; gap:6px; margin-top:8px }
.s-url-row input {
  flex:1; padding:6px 10px; border-radius:8px;
  border:1px solid var(--border); background:var(--hover);
  color:var(--text); font-size:.8rem;
}
.s-url-row input:focus { border-color:var(--accent) }
.s-url-row button {
  padding:6px 14px; border-radius:8px;
  background:var(--accent); color:#fff; font-size:.8rem; cursor:pointer;
}

/* ============================================================
   Toast
   ============================================================ */
.toast {
  position:fixed; bottom:32px; left:50%; transform:translateX(-50%); z-index:9999;
  pointer-events:none;
}
.toast__item {
  padding:8px 18px; border-radius:var(--radius-sm);
  background:var(--text); color:var(--bg);
  font-size:.82rem; font-weight:500; white-space:nowrap;
  box-shadow:var(--shadow-lg);
  animation:fade .3s ease;
  margin-top:6px;
}

/* ============================================================
   Animations
   ============================================================ */
@keyframes fade {
  from { opacity:0; transform:translateY(4px) }
  to   { opacity:1; transform:translateY(0) }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:480px) {
  .page { padding:40px 16px 0 }
  .search { margin-bottom:28px }
  .bookmarks__grid { grid-template-columns:repeat(auto-fill,minmax(85px,1fr)); gap:8px }
  .bm-card { padding:20px 8px 14px }
  .bm-card__img { width:34px; height:34px }
  .bm-card--add { padding:22px 8px 16px }
  .settings { right:10px; left:10px; width:auto }
  .gear { top:14px; right:14px; width:32px; height:32px }
}