:root {
  --bg: #050506;
  --bg-elevated: #0e0f12;
  --fg: #f4f4f5;
  --muted: #9a9aa3;
  --cyan: #2ec4c6;
  --pink: #e24285;
  --amber: #f4a82b;
  --blue: #439fd7;
  --selection: #9e7bce;
  --line: #ffffff14;
  --font-display: "Syne", sans-serif;
  --font-headline: "Saira Condensed", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
  --editor-bg: #1F1F1F;
  --sidebar-bg: #202226;
  --chrome-bg: #18191b;
  --tab-bg: #303038;
  --code-fg: #ffffff;
  --code-file-fg: #a8a8b0;
  --tok-kw: #439fd7;
  --tok-str: #58ffd6;
  --tok-var: #ffffff;
  --tok-fn: #e24285;
  --tok-type: #f4a82b;
  --tok-key: #f4a82b;
  --tok-cmt: #e8e6e380;
  --diff-added-bg: #22c55e40;
  --diff-removed-bg: #ef444440;
  --diff-marker-added: #22c55e;
  --diff-marker-removed: #ef4444;
  --editor-line: #ffffff14;
  --editor-active-bg: #ffffff12;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--fg);
  background: var(--bg);
  font-family: var(--font-display);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: #7ee8ea;
}

img {
  max-width: 100%;
  display: block;
}

/* Hero */
.hero {
  position: relative;
  display: grid;
  place-items: center;
  overflow: visible;
  padding: 2.5rem 1rem 1.5rem;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%, #2ec4c622 0%, transparent 55%),
    radial-gradient(ellipse 60% 40% at 80% 80%, #e2428514 0%, transparent 50%),
    linear-gradient(180deg, #000 0%, #0a0a0c 70%, var(--bg) 100%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0.5rem 0 0;
}

.hero__logo {
  width: min(160px, 42vw);
  height: auto;
  margin: 0 auto 1rem;
  border-radius: 6px;
}

.hero__tagline {
  margin: 0 0 1.25rem;
  color: #c4c4cc;
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.03em;
}

.hero__tagline span {
  display: inline-block;
  padding: 0.4em 0.15em 0.55em;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--cyan);
  color: #041314;
}

.btn--primary:hover {
  background: #5fd8da;
  color: #041314;
}

.btn--ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid #ffffff2e;
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn--coffee {
  background: #ffdd00;
  color: #1a1200;
  border: none;
}

.btn--coffee:hover {
  background: #ffe84d;
  color: #1a1200;
}

.btn--coffee.is-placeholder {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--stat {
  gap: 0.4rem;
  background: var(--bg-elevated);
  color: var(--fg);
  border: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
}

.btn--stat:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn__icon {
  width: 0.95rem;
  height: 0.95rem;
  flex-shrink: 0;
  color: var(--cyan);
}

#stat-stars .btn__icon {
  color: #f5c518;
}

.btn--stat:hover .btn__icon {
  color: #7ee8ea;
}

#stat-stars:hover .btn__icon {
  color: #ffd84d;
}

.btn__value {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.9rem;
}

.btn--stat:hover .btn__value {
  color: #7ee8ea;
}

.btn__label {
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: inherit;
}

/* Sections */
.section {
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 2rem;
}

.section__head {
  margin-bottom: 2rem;
}

.section__head h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-headline);
  font-size: clamp(2.6rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 0.015em;
  color: #fff;
}

.section__head p {
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

/* Theme tabs */
.theme-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.theme-tabs::-webkit-scrollbar {
  display: none;
}

.theme-tabs__btn {
  flex: 0 0 auto;
  appearance: none;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  color: var(--muted);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  padding: 0.65rem 1.1rem;
  border-radius: 4px;
  cursor: pointer;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.theme-tabs__btn:hover {
  color: var(--fg);
  border-color: #ffffff33;
}

.theme-tabs__btn.is-active {
  color: #041314;
  background: var(--cyan);
  border-color: var(--cyan);
}

/* Live editor preview */
.editor {
  display: grid;
  grid-template-columns: 160px 1fr;
  min-height: 320px;
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  background: var(--editor-bg);
  transition: background 0.35s ease;
}

.editor__sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--editor-line);
  padding: 1rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  transition:
    background 0.35s ease,
    border-color 0.35s ease;
}

.editor__file {
  padding: 0.4rem 0.55rem;
  color: var(--code-file-fg);
  border-radius: 3px;
  transition: color 0.35s ease;
}

.editor__file.is-active {
  background: var(--editor-active-bg);
  color: var(--code-fg);
  transition:
    color 0.35s ease,
    background 0.35s ease;
}

.editor__main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--editor-bg);
  transition: background 0.35s ease;
}

.editor__tabs {
  display: flex;
  background: var(--chrome-bg);
  border-bottom: 1px solid var(--line);
}

.editor__tab {
  padding: 0.55rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  background: transparent;
}

.editor__tab.is-active {
  background: var(--tab-bg);
  color: #fff;
}

.editor__code {  margin: 0;
  padding: 0.75rem 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--code-fg);
  flex: 1;
  transition: color 0.35s ease;
}

.code-line {
  display: block;
  padding: 0 1.25rem 0 2.1rem;
  position: relative;
  white-space: pre;
}

.code-line--added {
  background: var(--diff-added-bg); /* diffEditor.insertedLineBackground */
  transition: background 0.35s ease;
}

.code-line--removed {
  background: var(--diff-removed-bg); /* diffEditor.removedLineBackground */
  transition: background 0.35s ease;
}

.code-line--added::before,
.code-line--removed::before {
  content: attr(data-marker);
  position: absolute;
  left: 0.65rem;
  width: 1rem;
  font-weight: 500;
}

.code-line--added::before {
  color: var(--diff-marker-added);
  transition: color 0.35s ease;
}

.code-line--removed::before {
  color: var(--diff-marker-removed);
  transition: color 0.35s ease;
}

/* Token colors from themes/clearline-*.json */
.tok-kw {
  color: var(--tok-kw); /* keyword / storage */
  transition: color 0.35s ease;
}

.tok-str {
  color: var(--tok-str); /* string */
  transition: color 0.35s ease;
}

.tok-var {
  color: var(--tok-var); /* variable */
  transition: color 0.35s ease;
}

.tok-fn {
  color: var(--tok-fn); /* entity.name.function */
  transition: color 0.35s ease;
}

.tok-type {
  color: var(--tok-type); /* entity.name.type / support.type.primitive */
  transition: color 0.35s ease;
}

.tok-key {
  color: var(--tok-key); /* meta.object-literal.key */
  transition: color 0.35s ease;
}

.tok-cmt {
  color: var(--tok-cmt); /* comment */
  transition: color 0.35s ease;
}

/* Install */
.install h3 {
  margin: 1.75rem 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.install__note {
  margin: 0 0 0.75rem;
  color: var(--muted);
}

.snippet {
  margin: 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: #e8e8ec;
}

/* Support */
.support {
  text-align: center;
  padding-bottom: 4rem;
}

.support .section__head {
  margin-bottom: 1.5rem;
}

.support__hint {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  padding: 2rem 1.5rem 3rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer p {
  margin: 0.35rem 0;
}

/* Motion */
.editor.is-switching .editor__code {
  animation: code-fade 0.35s ease;
}

@keyframes code-fade {
  from {
    opacity: 0.35;
  }
  to {
    opacity: 1;
  }
}

/* Responsive */
@media (max-width: 720px) {
  .editor {
    grid-template-columns: 1fr;
  }

  .editor__sidebar {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .editor.is-switching .editor__code,
  .btn {
    animation: none;
    transition: none;
  }
}