:root {
  --bg: #0b1020;
  --fg: #eef2ff;
  --muted: #9aa4c0;
  --card: rgba(255, 255, 255, .07);
  --card-hover: rgba(255, 255, 255, .13);
  --stroke: rgba(255, 255, 255, .12);
  --shadow: 0 10px 30px rgba(0, 0, 0, .35);
  --accent: #6ea8ff;
  --accent-2: #a78bfa;
  --radius: 18px;
  --blur: 18px;
}
[data-theme="light"] {
  --bg: #eef1f8;
  --fg: #101426;
  --muted: #5b6480;
  --card: rgba(255, 255, 255, .72);
  --card-hover: #fff;
  --stroke: rgba(16, 20, 38, .10);
  --shadow: 0 10px 24px rgba(23, 33, 66, .12);
  --accent: #2f6fed;
  --accent-2: #7c4dff;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- background ---------- */
.bg {
  position: fixed; inset: 0; z-index: -2;
  background-size: cover; background-position: center;
  transition: background-image .6s ease, opacity .6s ease;
}
.bg[data-kind="aurora"] {
  background:
    radial-gradient(1100px 620px at 12% -8%, rgba(110, 168, 255, .45), transparent 60%),
    radial-gradient(900px 560px at 88% 6%, rgba(167, 139, 250, .42), transparent 62%),
    radial-gradient(1000px 700px at 60% 105%, rgba(45, 212, 191, .28), transparent 60%),
    linear-gradient(160deg, #0a0f22 0%, #101a35 45%, #0b1020 100%);
}
.bg[data-kind="sunset"] {
  background:
    radial-gradient(900px 520px at 15% 0%, rgba(255, 138, 101, .55), transparent 60%),
    radial-gradient(800px 600px at 85% 20%, rgba(236, 72, 153, .45), transparent 60%),
    linear-gradient(160deg, #1b1030, #2a1436 50%, #120b20);
}
.bg[data-kind="forest"] {
  background:
    radial-gradient(900px 560px at 10% 10%, rgba(52, 211, 153, .35), transparent 60%),
    radial-gradient(900px 600px at 90% 90%, rgba(34, 197, 94, .25), transparent 60%),
    linear-gradient(160deg, #071a17, #0d2420 50%, #061412);
}
.bg[data-kind="mono"] {
  background:
    radial-gradient(900px 600px at 20% 0%, rgba(148, 163, 184, .28), transparent 60%),
    linear-gradient(160deg, #0d1117, #161b26 55%, #0a0d14);
}
.bg[data-kind="paper"] {
  background:
    radial-gradient(900px 600px at 20% 0%, rgba(255, 214, 165, .55), transparent 60%),
    linear-gradient(160deg, #f7f4ee, #eae4d9 60%, #efece5);
}
.bg-veil {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(180deg, rgba(0,0,0,.10), rgba(0,0,0,.30));
}
[data-theme="light"] .bg-veil { background: linear-gradient(180deg, rgba(255,255,255,.20), rgba(255,255,255,.45)); }

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px clamp(16px, 4vw, 44px) 0;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; letter-spacing: .2px; }
.logo { font-size: 22px; filter: drop-shadow(0 4px 10px rgba(0,0,0,.35)); }
.brand-name { font-size: 15px; opacity: .9; }
.topbar-actions { display: flex; gap: 8px; }
.icon-btn {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; cursor: pointer;
  background: var(--card); color: var(--fg); border: 1px solid var(--stroke);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  font-size: 16px; line-height: 1; transition: .18s;
}
.icon-btn:hover { background: var(--card-hover); transform: translateY(-1px); }
.icon-btn.on { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border-color: transparent; }

/* ---------- layout ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 clamp(14px, 4vw, 44px) 40px; }
.hero { padding: clamp(24px, 6vh, 72px) 0 28px; text-align: center; }
.clock-row { display: flex; align-items: baseline; justify-content: center; gap: 14px; flex-wrap: wrap; }
.clock {
  font-size: clamp(44px, 8vw, 78px); font-weight: 700; letter-spacing: -2px;
  text-shadow: 0 8px 30px rgba(0, 0, 0, .45); font-variant-numeric: tabular-nums;
}
[data-theme="light"] .clock { text-shadow: 0 8px 24px rgba(0,0,0,.10); }
.date { font-size: 15px; color: var(--muted); font-weight: 500; }
.weather {
  margin-top: 10px; display: inline-flex; align-items: center; gap: 10px;
  padding: 8px 16px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--stroke);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  font-size: 14px;
}
.weather b { font-size: 18px; font-weight: 650; }
.weather[hidden] { display: none; }

/* ---------- search ---------- */
.search { margin: 26px auto 0; max-width: 720px; }
.engine-tabs { display: flex; gap: 6px; justify-content: center; margin-bottom: 10px; flex-wrap: wrap; }
.engine-tabs button {
  padding: 6px 12px; border-radius: 999px; font-size: 12.5px; cursor: pointer;
  background: transparent; color: var(--muted); border: 1px solid transparent; transition: .15s;
}
.engine-tabs button:hover { color: var(--fg); }
.engine-tabs button.on {
  color: var(--fg); background: var(--card); border-color: var(--stroke); font-weight: 600;
}
.search-box {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 8px 8px 16px; border-radius: 999px;
  background: var(--card); border: 1px solid var(--stroke);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  box-shadow: var(--shadow); transition: .2s;
}
.search-box:focus-within { background: var(--card-hover); border-color: rgba(110,168,255,.55); box-shadow: 0 12px 36px rgba(0,0,0,.35), 0 0 0 4px rgba(110,168,255,.12); }
.search-ico { display: grid; place-items: center; color: var(--muted); }
#q {
  flex: 1; min-width: 0; background: transparent; border: 0; outline: 0;
  color: var(--fg); font-size: 16px; padding: 10px 0;
}
#q::placeholder { color: var(--muted); }
.search-go {
  display: grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; border: 0; cursor: pointer;
  background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-size: 15px;
}

/* ---------- groups ---------- */
.groups { display: flex; flex-direction: column; gap: 26px; margin-top: 34px; }
.group-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.group-name { font-size: 13.5px; font-weight: 650; letter-spacing: .4px; color: var(--muted); text-transform: uppercase; }
.group-head .count { font-size: 11.5px; color: var(--muted); opacity: .7; }
.group-head .g-act { margin-left: auto; display: flex; gap: 6px; opacity: 0; transition: .15s; }
body.edit .group-head .g-act { opacity: 1; }
.g-act button {
  border: 1px solid var(--stroke); background: var(--card); color: var(--fg);
  border-radius: 9px; padding: 4px 9px; font-size: 12px; cursor: pointer;
}
.g-act button:hover { background: var(--card-hover); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.card {
  position: relative; display: flex; align-items: center; gap: 11px;
  padding: 12px 14px; border-radius: 14px; text-decoration: none; color: var(--fg);
  background: var(--card); border: 1px solid var(--stroke);
  backdrop-filter: blur(var(--blur)); -webkit-backdrop-filter: blur(var(--blur));
  transition: transform .16s, background .16s, border-color .16s, box-shadow .16s;
  min-height: 62px; overflow: hidden;
}
.card:hover { background: var(--card-hover); transform: translateY(-2px); box-shadow: var(--shadow); border-color: rgba(255,255,255,.22); }
.card .ico {
  width: 34px; height: 34px; border-radius: 10px; flex: 0 0 34px; display: grid; place-items: center;
  background: rgba(255,255,255,.10); overflow: hidden; font-weight: 700; font-size: 15px;
}
.card .ico img { width: 22px; height: 22px; object-fit: contain; }
.card .meta { min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.card .t { font-size: 13.5px; font-weight: 560; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.card .u { font-size: 11px; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
body.edit .card { cursor: grab; }
body.edit .card:hover { border-color: rgba(110,168,255,.5); }
.card .del {
  position: absolute; top: 4px; right: 4px; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(0,0,0,.45); color: #fff; border: 0; font-size: 11px; cursor: pointer; display: none;
}
body.edit .card .del { display: grid; place-items: center; }
.card.dragging { opacity: .45; }
.cards.drop-target { outline: 2px dashed rgba(110,168,255,.55); outline-offset: 6px; border-radius: 14px; }
.add-card {
  border: 1px dashed var(--stroke); background: transparent; color: var(--muted);
  display: grid; place-items: center; font-size: 22px; cursor: pointer; min-height: 62px; border-radius: 14px;
}
.add-card:hover { color: var(--fg); border-color: rgba(110,168,255,.5); }
.empty { color: var(--muted); font-size: 13px; padding: 8px 2px; }

.foot { margin-top: 40px; text-align: center; color: var(--muted); font-size: 12px; opacity: .8; }

/* ---------- modal ---------- */
.modal-mask {
  position: fixed; inset: 0; z-index: 50; display: grid; place-items: center;
  background: rgba(4, 7, 16, .55); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  padding: 18px;
}
.modal-mask[hidden] { display: none; }
.modal {
  width: min(460px, 100%); max-height: 88vh; overflow: auto;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  border: 1px solid var(--stroke); border-radius: 20px; padding: 22px;
  box-shadow: 0 30px 80px rgba(0,0,0,.55);
}
[data-theme="light"] .modal { background: #fff; }
.modal.wide { width: min(620px, 100%); }
.modal h2 { margin: 0 0 6px; font-size: 18px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.modal form { display: flex; flex-direction: column; gap: 12px; margin-top: 14px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); }
input, select, textarea {
  width: 100%; padding: 10px 12px; border-radius: 11px; font-size: 14px; font-family: inherit;
  background: rgba(255,255,255,.06); color: var(--fg); border: 1px solid var(--stroke); outline: none;
}
[data-theme="light"] input, [data-theme="light"] select, [data-theme="light"] textarea { background: #f4f6fb; }
input:focus, select:focus, textarea:focus { border-color: rgba(110,168,255,.6); }
.row { display: flex; gap: 10px; align-items: center; margin-top: 14px; }
.row.end { justify-content: flex-end; }
button.primary, button.ghost, .file-btn {
  padding: 10px 16px; border-radius: 11px; font-size: 14px; cursor: pointer; font-family: inherit;
  border: 1px solid var(--stroke); background: var(--card); color: var(--fg);
}
button.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: 0; color: #fff; font-weight: 600; }
button.ghost:hover, .file-btn:hover { background: var(--card-hover); }
.file-btn { display: inline-flex; align-items: center; }
.danger-text { margin-top: 16px; background: none; border: 0; color: #ff7a7a; cursor: pointer; font-size: 13px; }
.err { color: #ff8080; font-size: 13px; min-height: 18px; margin-top: 8px; }
.login { text-align: center; }
.login form { margin-top: 16px; }

.tabs { display: flex; gap: 6px; margin: 14px 0 16px; flex-wrap: wrap; }
.tab {
  padding: 7px 13px; border-radius: 999px; font-size: 13px; cursor: pointer;
  background: transparent; color: var(--muted); border: 1px solid transparent;
}
.tab.active { background: var(--card); color: var(--fg); border-color: var(--stroke); font-weight: 600; }
.tab-body { display: flex; flex-direction: column; gap: 12px; }
.tab-body[hidden] { display: none; }
.switch-row { flex-direction: row; align-items: center; justify-content: space-between; color: var(--fg); font-size: 14px; }
.switch { width: 42px; height: 24px; appearance: none; background: rgba(255,255,255,.16); border-radius: 999px; position: relative; cursor: pointer; }
.switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: .18s; }
.switch:checked { background: linear-gradient(135deg, var(--accent), var(--accent-2)); }
.switch:checked::after { transform: translateX(18px); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.wallpapers { display: flex; gap: 8px; flex-wrap: wrap; }
.wp {
  width: 62px; height: 40px; border-radius: 10px; cursor: pointer; border: 2px solid transparent;
}
.wp.on { border-color: var(--accent); }
hr { border: 0; border-top: 1px solid var(--stroke); margin: 6px 0; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  background: rgba(10, 14, 28, .92); color: #fff; padding: 10px 18px; border-radius: 999px;
  font-size: 13px; z-index: 90; box-shadow: 0 10px 30px rgba(0,0,0,.4);
}

@media (max-width: 560px) {
  .cards { grid-template-columns: repeat(auto-fill, minmax(132px, 1fr)); gap: 10px; }
  .card { padding: 10px; gap: 9px; min-height: 56px; }
  .hero { padding-top: 28px; }
  .clock { font-size: 48px; }
  .foot { display: none; }
}