:root {
  color-scheme: light;
  --bg: #f3efe5;
  --bg-accent: #e0d4be;
  --panel: rgba(255, 252, 246, 0.82);
  --line: rgba(77, 55, 22, 0.18);
  --text: #2b2016;
  --muted: #6d5843;
  --primary: #9d4f23;
  --primary-strong: #6f3514;
  --shadow: 0 18px 50px rgba(74, 48, 17, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(255, 244, 221, 0.95), transparent 30%),
    radial-gradient(circle at bottom right, rgba(204, 131, 86, 0.2), transparent 25%),
    linear-gradient(140deg, var(--bg), #f8f6f2 45%, var(--bg-accent));
}

.shell {
  width: min(960px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 64px;
}

.hero {
  padding: 20px 4px 24px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary);
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2.4rem, 7vw, 4.6rem);
  line-height: 0.95;
}

.intro {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.panel {
  background: var(--panel);
  backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.panel + .panel {
  margin-top: 18px;
}

.search-label,
.results-header h2 {
  display: block;
  margin: 0 0 14px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--muted);
}

.search-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
}

input,
button {
  border-radius: 18px;
  border: 1px solid var(--line);
  font: inherit;
}

input {
  width: 100%;
  min-width: 0;
  padding: 16px 18px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.8);
}

input:focus {
  outline: 2px solid rgba(157, 79, 35, 0.22);
  border-color: rgba(157, 79, 35, 0.45);
}

button {
  padding: 16px 22px;
  cursor: pointer;
  color: #fff9f4;
  background: linear-gradient(180deg, #bc6430, var(--primary));
}

button:hover {
  background: linear-gradient(180deg, #c26d39, var(--primary-strong));
}

.hint,
#status,
#summary {
  margin: 12px 2px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.mode-row {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.mode-button {
  padding: 10px 16px;
  color: var(--muted);
  background: rgba(157, 79, 35, 0.08);
}

.mode-button.is-active {
  color: #fff9f4;
  background: linear-gradient(180deg, #bc6430, var(--primary));
}

.meta-panel {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.result-card {
  padding: 18px;
  border-radius: 20px;
  border: 1px solid rgba(116, 76, 28, 0.14);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(251, 244, 232, 0.94));
}

.result-word {
  font-size: 1.55rem;
  font-weight: 700;
}

.result-pinyin {
  margin-top: 10px;
  color: var(--primary-strong);
  font-size: 0.96rem;
}

.result-explanation {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.result-meta span {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.84rem;
  color: var(--muted);
  background: rgba(157, 79, 35, 0.08);
}

.empty-state {
  padding: 24px;
  border-radius: 18px;
  text-align: center;
  color: var(--muted);
  background: rgba(157, 79, 35, 0.05);
}

code {
  font-family: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

@media (max-width: 640px) {
  .shell {
    width: min(100% - 20px, 960px);
    padding-top: 28px;
  }

  .search-row {
    grid-template-columns: 1fr;
  }

  .result-card {
    padding: 16px;
  }
}