:root {
  --bg: #f2f2f7;
  --card: #ffffff;
  --card-line: rgba(0, 0, 0, 0.08);
  --text: #1d1d1f;
  --muted: #86868b;
  --accent: #007aff;
  --accent-2: #5856d6;
  --radius: 16px;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
}

.aurora {
  position: fixed;
  inset: -10% -10% auto -10%;
  height: 42vh;
  background: linear-gradient(180deg, rgba(0, 122, 255, 0.06), transparent);
  pointer-events: none;
  z-index: 0;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 880px;
  margin: 0 auto;
  padding: 56px 20px 40px;
}

.hero { text-align: center; margin-bottom: 26px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 13px;
  border: 1px solid var(--card-line);
  border-radius: 999px;
  background: var(--card);
  font-size: 13px;
  color: var(--muted);
}

.badge-icon { width: 16px; height: 16px; }

h1 {
  margin: 16px 0 8px;
  font-size: clamp(26px, 4.4vw, 38px);
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
}

.sub { margin: 0; color: var(--muted); font-size: 14px; }

.search-card {
  background: var(--card);
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.search-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--card-line);
  border-radius: 12px;
  padding: 8px 8px 8px 14px;
  transition: border-color .2s, box-shadow .2s;
}

.search-bar:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.12);
}

.search-icon { width: 20px; height: 20px; color: var(--muted); flex: none; }

.search-bar input {
  flex: 1;
  min-width: 0;
  background: none;
  border: 0;
  outline: none;
  color: var(--text);
  font-size: 16px;
  padding: 8px 0;
}

.search-bar input::placeholder { color: #aeaeb2; }

.clear-btn {
  flex: none;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.06);
  color: var(--muted);
  cursor: pointer;
}

.clear-btn svg { width: 14px; height: 14px; }
.clear-btn:hover { background: rgba(0, 0, 0, 0.12); color: var(--text); }

.submit-btn {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
  transition: opacity .15s, transform .12s;
}

.submit-btn:hover { opacity: 0.9; }
.submit-btn:active { transform: translateY(1px); }

kbd {
  font: inherit;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.28);
  color: #fff;
}

.chips-group { margin-top: 14px; }

.chips-label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 9px;
  letter-spacing: .5px;
}

.chips-label em {
  font-style: normal;
  color: var(--muted);
  background: rgba(0, 0, 0, 0.06);
  border-radius: 999px;
  padding: 1px 7px;
  margin-left: 2px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

#regionChips { max-height: 128px; overflow-y: auto; padding-right: 4px; }

#regionChips::-webkit-scrollbar { width: 6px; }
#regionChips::-webkit-scrollbar-thumb { background: rgba(0, 0, 0, 0.16); border-radius: 3px; }
#regionChips .chip { font-size: 12.5px; padding: 5px 11px; }

.chip {
  border: 1px solid var(--card-line);
  background: #fff;
  color: var(--text);
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 13.5px;
  cursor: pointer;
  transition: all .18s;
}

.chip:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(0, 122, 255, 0.06);
  transform: translateY(-1px);
}

.stage {
  margin-top: 22px;
  min-height: 380px;
  display: grid;
  place-items: center;
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  background: var(--card);
  padding: 22px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
}

.placeholder, .loading, .empty { text-align: center; color: var(--muted); }
.placeholder-art svg, .empty-art svg { width: 56px; height: 56px; opacity: .55; }
.empty-art svg { color: #ff3b30; }
.placeholder-title, .empty-title { margin: 10px 0 4px; color: var(--text); font-size: 17px; font-weight: 600; }
.placeholder-desc, .empty-desc { margin: 0; font-size: 13.5px; }
.empty-desc span { color: #ff9500; }
.empty-suggest { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 14px; }

.spinner {
  width: 34px;
  height: 34px;
  margin: 0 auto 12px;
  border-radius: 50%;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-top-color: var(--accent);
  animation: spin .8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.result {
  margin: 0;
  width: 100%;
  animation: none;
}

.result.pop { animation: pop .38s cubic-bezier(.2, .9, .3, 1.2); }

@keyframes pop {
  from { opacity: 0; transform: translateY(14px) scale(.98); }
  to { opacity: 1; transform: none; }
}

.frame {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--card-line);
  background: #f2f2f7;
  aspect-ratio: 4 / 3;
}

.frame { position: relative; }
.frame img { width: 100%; height: 100%; display: block; object-fit: cover; }

.frame-flag {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 12px;
  padding: 5px 11px;
  border-radius: 999px;
  color: #1d1d1f;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(6px);
}

figcaption { padding: 14px 4px 2px; }
figcaption h2 { margin: 0 0 6px; font-size: 19px; }
figcaption p { margin: 0; color: var(--muted); font-size: 14px; }

.tags { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; }

.tag {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--accent);
  background: rgba(0, 122, 255, 0.1);
  border: 1px solid rgba(0, 122, 255, 0.2);
}

.empty.shake { animation: shake .4s ease; }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-7px); }
  50% { transform: translateX(7px); }
  75% { transform: translateX(-4px); }
}

.foot { margin-top: 22px; text-align: center; font-size: 12.5px; color: var(--muted); }
.foot kbd { background: rgba(0, 0, 0, 0.08); color: var(--text); }

[hidden] { display: none !important; }

@media (max-width: 560px) {
  .app { padding: 34px 14px 28px; }
  .submit-btn span { display: none; }
  .submit-btn kbd { display: none; }
  .submit-btn::after { content: "搜索"; }
  .stage { min-height: 300px; padding: 14px; }
}