/* seedling.abc-cluster.cloud — landing styles
 * Dark default; light override via topbar toggle. Tokens parity with
 * abc-cluster-cli Docusaurus site. Class surface = seedling.index.html.
 */

/* ─── Tokens ───────────────────────────────────────────────────────── */
:root,
:root[data-theme="dark"] {
  --bg: #070f0c; --bg-1: #0b1a15; --bg-2: #0f2219;
  --text: #c5e5dc; --text-dim: #7db8a8; --text-mute: #4a7d6f;
  --ink: #e8f9f4; --ink-dim: #c8a84c;
  --accent: #c8a84c; --accent-dim: #a87c2c; --primary: #4ab89a;
  --rule: #163d32; --rule-soft: #0e2a22;
  --danger: #e07b7b; --success: #6fcca5;
}
:root[data-theme="light"] {
  --bg: #ffffff; --bg-1: #eef6f2; --bg-2: #e3eee8;
  --text: #1a4a3a; --text-dim: #2d7060; --text-mute: #6aaa96;
  --ink: #0a2820; --ink-dim: #907028;
  --accent: #907028; --accent-dim: #c8a84c; --primary: #2d7060;
  --rule: #a8d8cc; --rule-soft: #c8e8e0;
  --danger: #b04040; --success: #2d7060;
}

/* ─── Reset + base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--text);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px; line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh; display: flex; flex-direction: column;
}
code, .mono, pre, kbd {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
h1, h2, h3, h4 {
  margin: 0; font-weight: 600; letter-spacing: -0.02em; color: var(--ink);
}
a {
  color: var(--ink); text-decoration: none;
  border-bottom: 1px dotted var(--ink-dim);
  transition: color .12s, border-color .12s;
}
a:hover { color: var(--accent); border-bottom-color: var(--accent); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }
.sr-only {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* ─── Topbar ───────────────────────────────────────────────────────── */
.topbar {
  border-bottom: 1px solid var(--rule); background: var(--bg);
  padding: 14px 0; position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(8px);
}
.topbar-inner {
  max-width: 1180px; margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; gap: 18px;
}
.top-spacer { flex: 1; }
.brand {
  display: flex; align-items: center; gap: 10px;
  color: var(--ink); border-bottom: none;
  font-family: 'JetBrains Mono', monospace; font-size: 14px; font-weight: 600;
}
.brand-mark { width: 28px; height: 28px; color: var(--ink); }
.brand-name { letter-spacing: -0.01em; }
.brand-name .dim { color: var(--text-dim); }
.brand-name .tier { color: var(--accent); }

.top-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--text-dim);
  border: 1px solid transparent; border-radius: 6px;
  padding: 7px 12px; transition: color .12s, border-color .12s, background .12s;
}
.top-link:hover { color: var(--ink); border-bottom-color: transparent; }
.top-link.primary {
  background: var(--ink); color: var(--bg); border-color: var(--ink); font-weight: 600;
}
.top-link.primary:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.top-link-ico { width: 16px; height: 16px; }

.theme-toggle {
  appearance: none; background: transparent;
  border: 1px solid var(--rule); border-radius: 6px;
  color: var(--text-dim); cursor: pointer; padding: 6px;
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-dim); background: var(--bg-1); }
.theme-toggle svg { width: 16px; height: 16px; }
.ti-sun  { display: none; }
.ti-moon { display: block; }
:root[data-theme="dark"] .ti-sun  { display: block; }
:root[data-theme="dark"] .ti-moon { display: none; }

/* ─── Page container ───────────────────────────────────────────────── */
.page { flex: 1; width: 100%; }

/* ─── Hero ─────────────────────────────────────────────────────────── */
.hero { padding: 48px 32px 56px; max-width: 1180px; margin: 0 auto; }
.hero-inner { display: flex; flex-direction: column; gap: 28px; }
.hero-headline {
  display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 32px; align-items: center;
}
.hero-mark {
  position: relative; aspect-ratio: 1 / 1;
  width: clamp(160px, 18vw, 220px); flex-shrink: 0;
}
.hero-mark svg { width: 100%; height: 100%; display: block; }
.hero-mark::after {
  content: ''; position: absolute; inset: -10px;
  background:
    linear-gradient(var(--ink-dim), var(--ink-dim)) top left/14px 1px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) top left/1px 14px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) top right/14px 1px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) top right/1px 14px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) bottom left/14px 1px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) bottom left/1px 14px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) bottom right/14px 1px no-repeat,
    linear-gradient(var(--ink-dim), var(--ink-dim)) bottom right/1px 14px no-repeat;
  pointer-events: none; opacity: 0.55;
}
.hero-headline-text { min-width: 0; }

.eyebrow {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  color: var(--text-dim); font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow .pill {
  display: inline-flex; align-items: center; gap: 7px;
  color: var(--ink); background: var(--bg-1); border: 1px solid var(--rule);
  padding: 3px 10px; border-radius: 999px;
  text-transform: none; letter-spacing: 0.02em; font-size: 11px; font-weight: 500;
}
.eyebrow .pulse {
  width: 6px; height: 6px; background: var(--primary); border-radius: 50%;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 25%, transparent);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;} 50%{opacity:.5;} }

.acronym-h1 {
  font-size: clamp(28px, 5vw, 54px); line-height: 1.05; margin: 0 0 10px;
}
.acronym-line {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 14px;
  color: var(--text); font-family: 'JetBrains Mono', monospace;
}
.acronym-line .ac.ac-a { flex-basis: 100%; margin-right: 0; }
.acronym-line .ac:not(.ac-a),
.acronym-line > .ac-rest { font-size: 0.48em; letter-spacing: 0.01em; }
.ac { display: inline-flex; align-items: baseline; }
.ac-letter { color: var(--ink); font-weight: 700; font-size: 1.05em; letter-spacing: -.02em; }
.ac-rest { color: var(--text); font-weight: 500; }
.ac-rotator {
  display: inline-block; height: 1.18em; overflow: hidden;
  vertical-align: bottom; position: relative;
  width: var(--w, 12ch);
  transition: width 380ms cubic-bezier(.4,0,.2,1);
}
.ac-track {
  display: flex; flex-direction: column; line-height: 1.18em;
  transform: translateY(0); transition: transform 380ms cubic-bezier(.4,0,.2,1);
}
.ac-track > span { color: var(--text); font-weight: 500; white-space: nowrap; }
.ac-track > span.live { color: var(--accent); }
.acronym-sub {
  display: block; margin-top: 12px; color: var(--text-mute);
  font-size: 13px; letter-spacing: .02em;
  font-family: 'IBM Plex Sans', sans-serif;
}
.acronym-sub i {
  color: var(--text-dim); font-style: normal;
  border-bottom: 1px dotted var(--rule); padding-bottom: 1px;
}
@media (prefers-reduced-motion: reduce) {
  .ac-rotator, .ac-track { transition: none !important; }
}

.hero-body { margin-top: 4px; display: flex; flex-direction: column; gap: 22px; }
.lede {
  font-size: 17px; line-height: 1.55; color: var(--text);
  margin: 0; max-width: 720px;
}
.lede-highlight b { color: var(--ink); font-weight: 600; }

.retention-banner {
  display: flex; align-items: flex-start; gap: 14px;
  background: var(--bg-1); border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  padding: 14px 16px; border-radius: 6px;
  font-size: 13.5px; line-height: 1.55;
}
.retention-tag {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent);
  white-space: nowrap; padding-top: 1px;
}
.retention-text { color: var(--text); }
.retention-text b { color: var(--ink); font-weight: 600; }

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 6px;
  border: 1px solid var(--rule); background: transparent;
  color: var(--ink);
  font-family: inherit; font-size: 13px; font-weight: 600;
  letter-spacing: 0.01em; text-decoration: none; cursor: pointer;
  transition: all .12s;
}
.btn:hover { background: var(--bg-1); border-color: var(--ink-dim); color: var(--ink); }
.btn.primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn.primary:hover { background: var(--accent); border-color: var(--accent); color: var(--bg); }
.btn .arrow { font-family: inherit; transition: transform .12s; }
.btn:hover .arrow { transform: translateX(3px); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }

/* ─── Block ────────────────────────────────────────────────────────── */
.block, .feedback {
  padding: 56px 32px; max-width: 1180px; margin: 0 auto;
  border-top: 1px solid var(--rule);
}
.block-head {
  display: grid; grid-template-columns: minmax(160px, 200px) 1fr;
  gap: 32px; margin-bottom: 32px;
}
.block-eyebrow {
  display: flex; align-items: center; gap: 10px; color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase; padding-top: 8px;
}
.block-eyebrow .num { color: var(--accent); font-weight: 700; }
.block-title {
  font-size: clamp(22px, 3vw, 32px); line-height: 1.15;
  margin: 0 0 12px; letter-spacing: -0.02em; max-width: 680px;
}
.block-title code {
  background: var(--bg-2); padding: 1px 8px; border-radius: 4px;
  font-size: 0.8em; color: var(--ink);
}
.block-desc { color: var(--text); font-size: 14.5px; line-height: 1.6; margin: 0; max-width: 680px; }
.block-desc code {
  background: var(--bg-2); padding: 1px 6px; border-radius: 3px;
  font-size: 0.9em; color: var(--ink);
}

/* ─── Install ──────────────────────────────────────────────────────── */
.install-stack { display: flex; flex-direction: column; gap: 16px; }
.cmd {
  background: var(--bg-1); border: 1px solid var(--rule);
  border-radius: 8px; overflow: hidden;
}
.cmd-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: var(--bg-2); border-bottom: 1px solid var(--rule);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim);
}
.cmd-title { display: flex; gap: 8px; align-items: baseline; }
.cmd-title .path {
  color: var(--text-mute); text-transform: none; letter-spacing: 0.02em; font-size: 10.5px;
}
.cmd-copy {
  appearance: none; background: transparent;
  border: 1px solid var(--rule); border-radius: 4px;
  color: var(--text-dim); padding: 3px 10px;
  font-family: inherit; font-size: 10.5px; letter-spacing: 0.1em;
  text-transform: uppercase; cursor: pointer; transition: all .12s;
}
.cmd-copy:hover { border-color: var(--ink-dim); color: var(--ink); }
.cmd-copy.copied { background: var(--primary); border-color: var(--primary); color: var(--bg); }
.cmd pre {
  margin: 0; padding: 16px 18px;
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.55;
  color: var(--text); overflow-x: auto; background: transparent; white-space: pre;
}
.cmd .prompt { color: var(--text-mute); user-select: none; }
.cmd .flag   { color: var(--accent); }
.cmd .str    { color: var(--primary); }
.cmd .cont   { color: var(--text-mute); }
.cmd .comment { color: var(--text-mute); font-style: italic; }
.post-install { margin: 16px 0 0; color: var(--text-dim); font-size: 13.5px; }
.post-install a { font-weight: 500; }
.kbd {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg-2); border: 1px solid var(--rule);
  padding: 1px 7px; border-radius: 4px; font-size: 12px; color: var(--ink);
}

/* ─── Docs grid ────────────────────────────────────────────────────── */
.docs-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px;
}
.doc-link {
  border: 1px solid var(--rule); border-radius: 8px;
  padding: 18px 20px; background: var(--bg);
  display: flex; flex-direction: column; gap: 8px;
  border-bottom: 1px solid var(--rule);
  transition: border-color .12s, transform .12s, background .12s;
}
.doc-link:hover {
  border-color: var(--ink-dim); background: var(--bg-1);
  transform: translateY(-2px); color: var(--ink);
}
.doc-link .crumb {
  display: flex; justify-content: space-between;
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim);
}
.doc-link .arr { transition: transform .12s; }
.doc-link:hover .arr { transform: translateX(3px); color: var(--accent); }
.doc-link .name { font-size: 16px; font-weight: 600; color: var(--ink); }
.doc-link .desc { font-size: 13.5px; line-height: 1.5; color: var(--text); }
.doc-link .desc code {
  background: var(--bg-2); padding: 1px 5px; border-radius: 3px;
  font-size: 0.9em; color: var(--ink);
}
.doc-link .path-frag {
  margin-top: auto; font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: var(--text-mute);
}

/* ─── Form shell ──────────────────────────────────────────────────── */
.form-shell {
  border: 1px solid var(--rule); border-radius: 8px;
  background: var(--bg-1); overflow: hidden;
}
.form-shell-head {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 11px 18px; background: var(--bg-2); border-bottom: 1px solid var(--rule);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim);
}
.form-shell-head .label { color: var(--ink); }
.form-shell-head .path { color: var(--text-mute); }
.form-shell-head .meta { text-transform: none; letter-spacing: 0.02em; color: var(--text-mute); }
.form-shell-body { padding: 24px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field.span-2 { grid-column: span 2; }
.field label { font-size: 12.5px; font-weight: 500; color: var(--ink); letter-spacing: 0.01em; }
.field .req { color: var(--accent); margin-left: 3px; }
.field .hint { font-size: 12px; color: var(--text-mute); font-weight: 400; }
.field .hint code { font-size: 0.92em; color: var(--ink); }
.field input[type="text"],
.field input[type="email"],
.field select,
.field textarea {
  appearance: none; width: 100%;
  background: var(--bg); border: 1px solid var(--rule); border-radius: 6px;
  padding: 10px 12px; font-family: inherit; font-size: 14px; color: var(--text);
  transition: border-color .12s, background .12s;
}
.field input:focus,
.field select:focus,
.field textarea:focus { outline: none; border-color: var(--accent); background: var(--bg-1); }
.field textarea { resize: vertical; min-height: 80px; }
.field select { cursor: pointer; }
.field input::placeholder,
.field textarea::placeholder { color: var(--text-mute); }

.field .err-msg { display: none; font-size: 12px; color: var(--danger); margin-top: 2px; }
.field.has-err input,
.field.has-err select,
.field.has-err textarea { border-color: var(--danger); }
.field.has-err .err-msg { display: block; }

.field .checkbox {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 13px; line-height: 1.5; color: var(--text); cursor: pointer;
}
.field .checkbox input[type="checkbox"] {
  margin-top: 3px; width: 16px; height: 16px;
  accent-color: var(--primary); flex-shrink: 0;
}
.field .checkbox b { color: var(--ink); font-weight: 600; }

.form-submit-row {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  margin-top: 24px; flex-wrap: wrap;
}
.form-status { font-size: 13px; color: var(--text-dim); }
.form-status.is-error { color: var(--danger); }
.form-status.is-success { color: var(--success); }

.form-success { display: none; text-align: left; padding: 8px 0 0; }
.form-shell.is-submitted .form-grid,
.form-shell.is-submitted .form-submit-row { display: none; }
.form-shell.is-submitted .form-success { display: block; }
.form-success .seal {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--primary);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  padding: 4px 10px; border: 1px solid var(--primary); border-radius: 999px;
  margin-bottom: 14px;
}
.form-success h3 { font-size: 18px; margin: 0 0 8px; color: var(--ink); }
.form-success p { margin: 0 0 6px; font-size: 14px; color: var(--text); }

/* ─── Footer ──────────────────────────────────────────────────────── */
.foot {
  padding: 48px 32px 36px; max-width: 1180px; margin: 0 auto;
  border-top: 1px solid var(--rule);
}
.foot-cols {
  display: grid; grid-template-columns: minmax(160px, 200px) 1fr 1fr;
  gap: 32px; margin-bottom: 24px;
}
.foot-eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-dim);
  padding-top: 4px;
}
.foot-col h4 {
  font-size: 12px; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink); margin: 0 0 12px;
}
.foot-list { list-style: none; padding: 0; margin: 0; }
.foot-list li { margin-bottom: 8px; }
.foot-list a {
  font-size: 13.5px; color: var(--text-dim);
  border-bottom: 1px dotted var(--rule);
}
.foot-list a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.foot-meta {
  padding-top: 18px; border-top: 1px solid var(--rule-soft);
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.06em; color: var(--text-mute);
}

/* ─── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 800px) {
  .hero, .block, .feedback, .foot { padding-left: 20px; padding-right: 20px; }
  .topbar-inner { padding: 0 20px; }
  .top-link span { display: none; }
  .top-link.primary span { display: inline; }
  .hero { padding-top: 32px; padding-bottom: 40px; }
  .hero-headline { grid-template-columns: 1fr; gap: 22px; }
  .hero-mark { max-width: 160px; }
  .block-head { grid-template-columns: 1fr; gap: 12px; margin-bottom: 24px; }
  .block-eyebrow { padding-top: 0; }
  .form-grid { grid-template-columns: 1fr; }
  .field.span-2 { grid-column: span 1; }
  .foot-cols { grid-template-columns: 1fr; gap: 24px; }
  .retention-banner { flex-direction: column; gap: 6px; }
}