/* 色彩取自 App 图标的象牙底（#FEFDFA）与黑色线稿；成分色对应 ResultView.roleColor。 */
:root {
  /* light-dark() 依 color-scheme 取值：默认跟随系统，data-theme 由主题按钮写入并覆盖。 */
  color-scheme: light dark;
  --bg: light-dark(#fefdfa, #111110);
  --bg-soft: light-dark(#f6f4ee, #1a1a18);
  --ink: light-dark(#141414, #f2f0ea);
  --ink-soft: light-dark(#55534e, #b3b0a8);
  --ink-faint: light-dark(#8d8a83, #7d7a73);
  --line: light-dark(rgba(20, 20, 20, 0.12), rgba(242, 240, 234, 0.12));
  --key-bg: light-dark(#ffffff, #1f1f1d);
  --btn-bg: light-dark(#141414, #f2f0ea);
  --btn-ink: light-dark(#fefdfa, #111110);
  --ins: light-dark(#1f7a4d, #5cc98f);
  --del: light-dark(#b4412c, #f0866f);
  --role-sub: light-dark(#1f6fd1, #6aa8ff);
  --role-pred: light-dark(#d9730d, #ffa14a);
  --role-obj: light-dark(#8a4fd6, #b78cff);
  --role-attr: light-dark(#138a86, #4fcfc9);
  --font:
    -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Hiragino Sans GB",
    "Helvetica Neue", sans-serif;
  --font-display:
    -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --move: 350ms;
  /* 单栏阅读宽度（含导航），窄屏两侧各留 24px。 */
  --page: min(576px, 100% - 48px);
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.7 var(--font);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

h1,
h2,
h3,
p {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: 16px;
  top: -48px;
  padding: 8px 12px;
  background: var(--btn-bg);
  color: var(--btn-ink);
  border-radius: 8px;
  z-index: 10;
}

.skip:focus {
  top: 12px;
}

/* ---- 品牌标记：透明线稿作遮罩，随主题取文字色 ---- */
.mark {
  display: inline-block;
  width: 26px;
  height: 26px;
  background: currentColor;
  mask: url("assets/raven-mark.png") center / contain no-repeat;
  -webkit-mask: url("assets/raven-mark.png") center / contain no-repeat;
}

.mark-large {
  width: 64px;
  height: 64px;
}

/* ---- 导航 ---- */
.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 16px;
  width: var(--page);
  margin: 0 auto;
  padding: 14px 0;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

/* 复用 App 的 RavenWordmark.png；按宽度等比缩放，视口仅裁去上下透明留白。
   使用 alpha 遮罩保留原图形状，并跟随文字色适配明暗主题。 */
.brand-wordmark {
  display: block;
  width: 104px;
  height: 32px;
  background: currentColor;
  mask: url("assets/raven-wordmark.png") center / 100% auto no-repeat;
  -webkit-mask: url("assets/raven-wordmark.png") center / 100% auto no-repeat;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition:
    color 150ms,
    background-color 150ms;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--ink);
  background: var(--bg-soft);
}

.lang,
.theme {
  min-width: 44px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: 500 13px var(--font);
  cursor: pointer;
  transition: border-color 150ms;
}

.theme {
  display: inline-grid;
  place-items: center;
  min-width: 32px;
  padding: 0;
}

.theme svg {
  width: 16px;
  height: 16px;
}

/* 显示的是点击后将切换到的主题。 */
:root[data-theme="dark"] .icon-moon,
:root:not([data-theme="dark"]) .icon-sun {
  display: none;
}

.lang:hover,
.theme:hover {
  border-color: var(--ink-faint);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 20px;
  border-radius: 999px;
  background: var(--btn-bg);
  color: var(--btn-ink);
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  transition:
    transform 160ms var(--ease),
    opacity 160ms;
}

.btn:hover {
  opacity: 0.88;
}

.btn:active {
  transform: scale(0.97);
}

.btn-small {
  height: 32px;
  padding: 0 14px;
  font-size: 13px;
}