/*
 * 配色直接取自 Android 版的 ui/theme/Color.kt（Material 3 明暗两套），
 * 两端看起来是同一个产品。深色模式跟随系统，不做手动开关。
 */
:root {
  --primary: #3B5BDB;
  --on-primary: #FFFFFF;
  --primary-container: #DCE3FF;
  --on-primary-container: #001551;

  --secondary-container: #DDE1F9;
  --on-secondary-container: #151B2C;

  --tertiary: #00796B;
  --tertiary-container: #A7F3E5;
  --on-tertiary-container: #00201C;

  --error: #BA1A1A;
  --error-container: #FFDAD6;
  --on-error-container: #410002;

  --background: #FBF8FF;
  --on-background: #1A1B21;
  --on-surface: #1A1B21;
  --on-surface-variant: #45464F;
  --outline: #757780;
  --outline-variant: #C5C6D0;

  --surface-lowest: #FFFFFF;
  --surface-low: #F5F2FA;
  --surface-container: #EFEDF4;
  --surface-high: #E9E7EF;

  --success: #1B7F4B;
  --warn-container: #FFE8C2;
  --on-warn-container: #3B2A00;

  --radius-l: 20px;
  --radius-m: 14px;
  --radius-s: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary: #B6C4FF;
    --on-primary: #00287D;
    --primary-container: #1F3BAF;
    --on-primary-container: #DCE3FF;

    --secondary-container: #404659;
    --on-secondary-container: #DDE1F9;

    --tertiary: #56D9C6;
    --tertiary-container: #005048;
    --on-tertiary-container: #A7F3E5;

    --error: #FFB4AB;
    --error-container: #93000A;
    --on-error-container: #FFDAD6;

    --background: #121319;
    --on-background: #E3E1E9;
    --on-surface: #E3E1E9;
    --on-surface-variant: #C5C6D0;
    --outline: #8F909A;
    --outline-variant: #45464F;

    --surface-lowest: #0D0E13;
    --surface-low: #1A1B21;
    --surface-container: #1E1F25;
    --surface-high: #292A30;

    --success: #6FDBA0;
    --warn-container: #4A3400;
    --on-warn-container: #FFDDA8;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--background);
  color: var(--on-background);
  font-family: system-ui, -apple-system, "Helvetica Neue", "PingFang SC",
    "HarmonyOS Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  /* 给底部常驻操作条留位置，再加上 iOS 手势条 / 鸿蒙全面屏的安全区 */
  padding-bottom: calc(96px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
}

h1, h2 { font-weight: 600; letter-spacing: 0.01em; }

a { color: var(--primary); text-underline-offset: 3px; }

.muted { color: var(--on-surface-variant); }
.small { font-size: 13px; line-height: 1.5; }

.ellipsis {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--surface-container);
  padding: calc(12px + env(safe-area-inset-top)) 16px 12px;
  text-align: center;
}

.topbar h1 {
  margin: 0;
  font-size: 20px;
  color: var(--on-surface);
}

/* ---------- 页面容器 ---------- */
.page {
  max-width: 560px;
  margin: 0 auto;
  padding: 14px 16px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card {
  background: var(--surface-container);
  border-radius: var(--radius-l);
  padding: 16px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--on-surface);
}

.card p { margin: 0; }

/* ---------- 状态卡 ---------- */
.status-idle { display: flex; gap: 14px; align-items: center; }
.status-idle h2 { margin: 0 0 4px; }
.status-icon { border-radius: 12px; flex: none; }

.status-busy { display: flex; gap: 16px; align-items: center; }
.status-busy-text { min-width: 0; flex: 1; }
.status-busy h2 { margin: 0 0 2px; }

.ring { position: relative; width: 56px; height: 56px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring circle { fill: none; stroke-width: 4; stroke-linecap: round; }
.ring-track { stroke: var(--outline-variant); }
.ring-fill {
  stroke: var(--primary);
  stroke-dasharray: 125.6;      /* 2πr, r = 20 */
  stroke-dashoffset: 125.6;
  transition: stroke-dashoffset 0.2s linear;
}
.ring-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--on-surface-variant);
}

.status-done h2 { margin: 0 0 4px; }
.status-done h2::before { content: "✅ "; }
.status-done.has-failure h2::before { content: "⚠️ "; }

/* ---------- 指引卡（哪里出问题了 + 该怎么办）---------- */
.guidance {
  border-radius: var(--radius-l);
  padding: 14px 16px;
  margin-bottom: 14px;
  background: var(--error-container);
  color: var(--on-error-container);
}
.guidance.is-warn { background: var(--warn-container); color: var(--on-warn-container); }
.guidance h3 { margin: 0 0 4px; font-size: 15px; }
.guidance p { margin: 0; font-size: 14px; line-height: 1.55; }
.guidance .who { margin-top: 6px; font-size: 13px; opacity: 0.85; word-break: break-all; }
.guidance .example { margin-top: 8px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.guidance .example code {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  white-space: nowrap;      /* 不让 --> 在折行处断开 */
}

/* ---------- 结果列表 ---------- */
.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.results-head h2 { margin: 0; }

.result-list { list-style: none; margin: 10px 0 0; padding: 0; }

.result-item {
  border-top: 1px solid var(--outline-variant);
  padding: 12px 0 4px;
}
.result-item:first-child { border-top: none; padding-top: 4px; }

.result-name {
  font-size: 15px;
  color: var(--on-surface);
  word-break: break-all;
}
.result-from { margin-top: 2px; word-break: break-all; }

.result-head {
  display: flex;
  align-items: center;
  gap: 12px;
}
.result-text { flex: 1; min-width: 0; }

.result-item .preview { margin-top: 10px; }
.preview summary {
  cursor: pointer;
  font-size: 14px;
  color: var(--primary);
  list-style: none;
  padding: 6px 0;
}
.preview summary::-webkit-details-marker { display: none; }
.preview summary::before { content: "▸ "; }
.preview[open] summary::before { content: "▾ "; }

pre.lyrics, pre.detail-log {
  margin: 6px 0 0;
  padding: 12px;
  background: var(--surface-lowest);
  border-radius: var(--radius-m);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--on-surface);
  max-height: 260px;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  white-space: pre-wrap;
  word-break: break-all;
  user-select: text;
  -webkit-user-select: text;
}

/* ---------- 开关行 ---------- */
.toggle-row {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 48px;
  cursor: pointer;
}
.toggle-text { flex: 1; display: flex; flex-direction: column; }
.toggle-title { font-size: 15px; color: var(--on-surface); }
.toggle-row input { position: absolute; opacity: 0; pointer-events: none; }

.switch {
  flex: none;
  position: relative;
  width: 52px;
  height: 32px;
  border-radius: 16px;
  background: var(--surface-high);
  border: 2px solid var(--outline);
  transition: background 0.15s ease, border-color 0.15s ease;
}
.switch::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 6px;
  width: 16px;
  height: 16px;
  margin-top: -8px;
  border-radius: 50%;
  background: var(--outline);
  transition: transform 0.15s ease, background 0.15s ease,
              width 0.15s ease, height 0.15s ease, margin 0.15s ease;
}
.toggle-row input:checked + .switch {
  background: var(--primary);
  border-color: var(--primary);
}
.toggle-row input:checked + .switch::after {
  width: 24px;
  height: 24px;
  margin-top: -12px;
  background: var(--on-primary);
  transform: translateX(18px);
}
.toggle-row input:focus-visible + .switch { outline: 2px solid var(--primary); outline-offset: 3px; }

/* ---------- 详细过程 ---------- */
.details summary {
  cursor: pointer;
  font-size: 15px;
  color: var(--on-surface);
  list-style: none;
  min-height: 24px;
}
.details summary::-webkit-details-marker { display: none; }
.details summary::after { content: " ▸"; color: var(--on-surface-variant); }
.details[open] summary::after { content: " ▾"; }

/* ---------- 关于 ---------- */
.about-list {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--on-surface-variant);
}
.about-list b { color: var(--on-surface); font-weight: 600; }

.foot {
  max-width: 560px;
  margin: 18px auto 0;
  padding: 0 16px;
  text-align: center;
  font-size: 13px;
}

/* ---------- 按钮 ---------- */
.btn {
  appearance: none;
  border: none;
  border-radius: var(--radius-m);
  font: inherit;
  font-size: 15px;
  font-weight: 500;
  min-height: 44px;          /* 触摸目标不小于 44px */
  padding: 0 18px;
  cursor: pointer;
  transition: filter 0.12s ease, opacity 0.12s ease;
}
.btn:active { filter: brightness(0.92); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.btn-primary { background: var(--primary); color: var(--on-primary); flex: 1; }
.btn-tonal { background: var(--secondary-container); color: var(--on-secondary-container); }
.btn-text {
  background: transparent;
  color: var(--primary);
  padding: 0 10px;
  min-height: 40px;
}
.btn-small {
  flex: none;
  min-height: 40px;
  font-size: 14px;
  padding: 0 14px;
  background: var(--surface-high);
  color: var(--on-surface);
}
.btn-small.is-primary { background: var(--primary-container); color: var(--on-primary-container); }

/* ---------- 底部操作条 ---------- */
.actionbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 10;
  background: var(--surface-container);
  border-top: 1px solid var(--outline-variant);
  padding-bottom: env(safe-area-inset-bottom);
}
.actionbar-inner {
  max-width: 560px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  gap: 10px;
}

/* ---------- 桌面端拖放 ---------- */
.dropzone {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--background) 88%, transparent);
  font-size: 18px;
  color: var(--primary);
}
.dropzone span {
  border: 2px dashed var(--primary);
  border-radius: var(--radius-l);
  padding: 32px 40px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* display: flex 会盖掉 UA 对 [hidden] 的默认样式，这里统一兜底 */
[hidden] { display: none !important; }