:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --surface: #ffffff;
  --panel: #fbfcff;
  --panel-2: #f2f5fb;
  --line: #dce2ec;
  --line-strong: #151515;
  --text: #101114;
  --muted: #666d78;
  --accent: #1769e0;
  --accent-2: #e23b4a;
  --yellow: #ffe45c;
  --green: #1769e0;
  --warning: #c77d00;
  --font: Arial, Helvetica, sans-serif;
  --mono: "SFMono-Regular", "JetBrains Mono", "Fira Code", Consolas, monospace;
  --step-0: 13px;
  --step-1: 15px;
  --step-2: 18px;
  --step-3: 24px;
  --step-4: 42px;
  --radius: 6px;
  --shadow: 0 8px 24px rgba(16, 17, 20, 0.08);
}

body[data-theme="dark"] {
  color-scheme: dark;
  --bg: #08090b;
  --surface: #0d0f12;
  --panel: #101216;
  --panel-2: #171a20;
  --line: #272c35;
  --line-strong: #f4f7fb;
  --text: #f4f7fb;
  --muted: #9ba3af;
  --accent: #61a0ff;
  --accent-2: #ff6470;
  --yellow: #ffe45c;
  --green: #61a0ff;
  --shadow: none;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--step-1);
  letter-spacing: 0;
}

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 68px;
  padding: 0 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(16, 17, 20, 0.04);
}

.logo {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 12px;
  border: 2px solid var(--line-strong);
  background: var(--yellow);
  color: #101114;
  font-size: var(--step-2);
  font-weight: 900;
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: -0.03em;
  transform: rotate(-1deg);
}

.logo span {
  display: inline-grid;
  place-items: center;
  min-width: 30px;
  min-height: 26px;
  margin-right: 7px;
  background: #101114;
  color: var(--yellow);
}

.tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.tab,
.plain-button,
.execute-button,
.term-card {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  border-radius: var(--radius);
}

.tab,
.plain-button {
  min-height: 36px;
  padding: 0 13px;
  font-size: var(--step-0);
  font-weight: 700;
  text-decoration: none;
}

.tab span {
  margin-right: 5px;
  color: var(--accent);
}

.tab:hover,
.tab.is-active,
.plain-button:hover,
.execute-button:hover,
.term-card:hover,
.term-card.is-selected {
  background: var(--text);
  color: var(--bg);
}

.tab:hover span,
.tab.is-active span {
  color: var(--bg);
}

.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 2px solid var(--line-strong);
  background: var(--surface);
  cursor: pointer;
  border-radius: 50%;
}

.theme-swatch {
  display: block;
  width: 18px;
  height: 18px;
  background: #000;
  border: 1px solid #000;
  border-radius: 50%;
}

body[data-theme="dark"] .theme-swatch {
  background: #fff;
  border-color: #fff;
}

main {
  min-height: calc(100vh - 112px);
}

.view {
  display: none;
  padding: 26px;
}

.view.is-active {
  display: block;
}

.dictionary-shell,
.humanizer-shell,
.about-layout {
  max-width: 1280px;
  margin: 0 auto;
}

.eyebrow,
.panel-top,
.list-header {
  color: var(--muted);
  font-size: var(--step-0);
  text-transform: uppercase;
}

.dictionary-masthead {
  display: grid;
  grid-template-columns: minmax(310px, 0.9fr) minmax(340px, 1.1fr);
  gap: 18px;
  align-items: stretch;
}

.dictionary-masthead > div,
.search-band {
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 22px;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.dictionary-masthead h1 {
  max-width: 720px;
  margin: 10px 0 0;
  font-size: var(--step-4);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.masthead-copy {
  max-width: 640px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: var(--step-1);
  line-height: 1.65;
}

.search-box {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  min-height: 62px;
  margin-top: 10px;
  padding: 0 14px;
  border: 2px solid var(--line-strong);
  background: var(--surface);
  border-radius: var(--radius);
}

.search-box > span {
  color: var(--accent);
  font-size: var(--step-3);
  font-weight: 900;
}

.search-input {
  display: block;
  width: 100%;
  margin-top: 0;
  border: 0;
  outline: 0;
  background: var(--surface);
  color: var(--text);
  font-size: var(--step-3);
  line-height: 1.25;
  font-weight: 700;
}

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

.quick-picks button {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
  font-size: var(--step-0);
  font-weight: 700;
  border-radius: 999px;
}

.quick-picks button:hover {
  background: var(--accent);
  color: #fff;
}

.alphabet-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin-top: 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
}

.alphabet-strip span {
  display: grid;
  place-items: center;
  width: 36px;
  height: 34px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--step-0);
  font-weight: 700;
}

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

.guide-strip a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  font-size: var(--step-0);
  font-weight: 700;
  text-decoration: none;
  border-radius: 999px;
}

.guide-strip a:hover {
  background: var(--text);
  color: var(--bg);
}

.dictionary-grid {
  display: grid;
  grid-template-columns: minmax(285px, 350px) minmax(0, 1fr);
  gap: 18px;
  margin-top: 12px;
}

.term-list,
.term-detail,
.text-panel,
.score-box,
.detected-bar,
.about-copy {
  border: 1px solid var(--line);
  background: var(--panel);
}

.term-list {
  min-height: 620px;
  padding: 14px;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.list-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.muted {
  margin-top: 18px;
}

.term-card {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 4px 10px;
  width: 100%;
  padding: 13px 12px;
  margin-bottom: 8px;
  text-align: left;
  border-radius: var(--radius);
}

.term-card b {
  grid-row: span 2;
  color: var(--muted);
  font-family: var(--mono);
  font-size: var(--step-0);
}

.term-card span {
  color: var(--accent);
  font-size: var(--step-2);
  font-weight: 700;
}

.term-card small {
  grid-column: 2;
  color: inherit;
  opacity: 0.72;
  font-size: var(--step-0);
  line-height: 1.45;
}

.term-detail {
  min-height: 620px;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  overflow: hidden;
}

.detail-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px 0;
}

.grade {
  color: var(--green);
}

.term-detail h1 {
  margin: 8px 0 0;
  padding: 0 18px;
  color: var(--accent);
  font-size: var(--step-4);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.entry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding: 8px 18px 0;
  color: var(--muted);
  font-size: var(--step-0);
}

.entry-meta a {
  color: var(--accent);
  font-weight: 700;
}

.definition {
  max-width: 900px;
  margin: 14px 0 0;
  padding: 0 18px 18px;
  color: var(--text);
  font-size: var(--step-2);
  line-height: 1.55;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
}

.term-detail section {
  max-width: 920px;
  margin-top: 0;
  padding: 18px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.term-detail h2 {
  margin: 0 0 12px;
  font-size: var(--step-0);
  color: var(--muted);
}

.term-detail p,
.term-detail li,
.about-copy p {
  margin-top: 0;
  font-size: var(--step-1);
  line-height: 1.75;
}

.term-detail li + li {
  margin-top: 10px;
}

.entry-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 9px;
  padding: 0 18px 16px;
  color: var(--muted);
  font-size: var(--step-0);
  border-bottom: 1px solid var(--line);
}

.mini-action,
.vote-button {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  border-radius: 999px;
  text-decoration: none;
}

.mini-action {
  min-height: 34px;
  padding: 0 12px;
  font-size: var(--step-0);
  font-weight: 800;
}

.icon-action {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.icon-action span {
  display: inline-grid;
  place-items: center;
  min-width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--panel-2);
  color: var(--accent);
  font-style: normal;
}

.icon-action em {
  font-style: normal;
}

.mini-action:hover,
.vote-button:hover {
  background: var(--text);
  color: var(--bg);
}

.source-link {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  margin-top: 8px;
  padding: 0 10px;
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: var(--step-0);
  font-weight: 800;
  text-decoration: none;
  border-radius: 999px;
}

.source-link:hover {
  background: var(--text);
  color: var(--bg);
}

.vote-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 18px;
  color: var(--muted);
  font-size: var(--step-0);
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--panel-2);
  font-family: var(--font);
}

.vote-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 102px;
  height: 38px;
  padding: 0 12px;
  font-weight: 800;
}

.vote-button span {
  color: var(--accent);
}

.vote-down span {
  color: var(--accent-2);
}

.vote-meta {
  color: var(--muted);
  font-family: var(--mono);
}

.humanizer-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 180px minmax(0, 1fr);
  gap: 16px;
  min-height: 640px;
}

.text-panel {
  display: flex;
  min-height: 640px;
  flex-direction: column;
}

.panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
}

textarea,
.output-box {
  flex: 1;
  width: 100%;
  padding: 18px;
  border: 0;
  outline: 0;
  background: var(--surface);
  color: var(--text);
  resize: none;
  line-height: 1.65;
}

.output-box {
  display: block;
  white-space: pre-wrap;
}

.execute-column {
  display: grid;
  grid-template-rows: 1fr 72px;
  gap: 16px;
}

.execute-button {
  width: 100%;
  min-height: 220px;
  padding: 12px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

.execute-button:disabled {
  cursor: wait;
  opacity: 0.7;
}

.score-box,
.detected-bar {
  display: flex;
  align-items: center;
  padding: 14px;
  color: var(--accent);
}

.detected-bar {
  max-width: 1280px;
  min-height: 48px;
  margin: 16px auto 0;
}

.about-layout {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 480px);
  gap: 48px;
  align-items: start;
  padding-top: 60px;
}

.about-layout h1 {
  margin: 0;
  max-width: 860px;
  font-size: var(--step-4);
  line-height: 1.08;
}

.about-copy {
  padding: 22px;
  box-shadow: var(--shadow);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  min-height: 48px;
  padding: 14px 24px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: var(--step-0);
}

.site-footer a {
  color: inherit;
}

.static-page {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 24px 56px;
}

.seo-article {
  border: 2px solid var(--line-strong);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.seo-article > .eyebrow,
.seo-article > h1,
.seo-article > .article-lead,
.seo-article > .vote-row,
.seo-article > section {
  padding-right: 22px;
  padding-left: 22px;
}

.seo-article > .eyebrow {
  margin: 0;
  padding-top: 22px;
}

.seo-article h1 {
  margin: 10px 0 0;
  color: var(--accent);
  font-size: var(--step-4);
  line-height: 1.1;
}

.article-lead {
  margin: 12px 0 0;
  font-size: var(--step-2);
  line-height: 1.6;
}

.seo-article section {
  margin-top: 0;
  padding-top: 20px;
  padding-bottom: 20px;
  border-top: 1px solid var(--line);
}

.seo-article h2 {
  margin: 0 0 10px;
  font-size: var(--step-2);
}

.seo-article p,
.seo-article li {
  font-size: var(--step-1);
  line-height: 1.75;
}

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

.related-grid a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  color: var(--text);
  font-size: var(--step-0);
  text-decoration: none;
}

.related-grid a:hover {
  background: var(--text);
  color: var(--bg);
}

@media (max-width: 900px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-actions {
    justify-content: flex-start;
  }

  .dictionary-masthead,
  .dictionary-grid,
  .humanizer-shell,
  .about-layout {
    grid-template-columns: 1fr;
  }

  .term-list,
  .term-detail,
  .text-panel {
    min-height: auto;
  }

  .execute-column {
    grid-template-rows: auto;
  }

  .execute-button {
    min-height: 56px;
    writing-mode: horizontal-tb;
  }
}