/* ==========================================================================
   ian-kris-espinoza / README.md
   Single stylesheet. No framework, no build step.
   Order: tokens → base → layout → header → hero → rail → sections →
          components → overlays → state hooks → responsive → motion/print
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens
   -------------------------------------------------------------------------- */

:root {
  --bg: #0d0e11;
  --dot: rgba(233, 231, 226, .05);
  --fg: #e9e7e2;
  --fg1: #f3f1ec;
  --fg2: rgba(233, 231, 226, .74);
  --fg3: rgba(233, 231, 226, .55);
  --fg4: rgba(233, 231, 226, .4);
  --fg5: rgba(233, 231, 226, .3);
  --line: rgba(233, 231, 226, .12);
  --line2: rgba(233, 231, 226, .1);
  --panel: rgba(233, 231, 226, .022);
  --card: #0f1014;
  --amber: #e0b25c;
  --amber-hi: #f0c877;
  --teal: #63bfbc;
  --chip: rgba(233, 231, 226, .16);
  --on-amber: #0d0e11;
  --bar: rgba(233, 231, 226, .42);
  --barbg: rgba(233, 231, 226, .09);
  --amber-soft: rgba(224, 178, 92, .07);
  --amber-line: rgba(224, 178, 92, .34);
  --on-amber-line: rgba(13, 14, 17, .22);
  --teal-line: rgba(99, 191, 188, .35);
  --hair: rgba(233, 231, 226, .2);
  --tint: rgba(233, 231, 226, .06);
  --hovr: rgba(233, 231, 226, .018);
  --scrim: rgba(6, 7, 9, .62);
  --shadow: 0 26px 70px rgba(0, 0, 0, .55);
  --sel: rgba(224, 178, 92, .17);

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: Newsreader, Georgia, serif;
  --shell: 1160px;
  --shell-pad: 40px;
  --anchor-offset: 88px;
}

html[data-theme="light"] {
  --bg: #faf6ee;
  --dot: rgba(38, 36, 31, .08);
  --fg: #26241f;
  --fg1: #14130f;
  --fg2: rgba(38, 36, 31, .78);
  --fg3: rgba(38, 36, 31, .6);
  --fg4: rgba(38, 36, 31, .45);
  --fg5: rgba(38, 36, 31, .32);
  --line: rgba(38, 36, 31, .16);
  --line2: rgba(38, 36, 31, .12);
  --panel: rgba(38, 36, 31, .035);
  --card: #fffdf7;
  --amber: #9a6a15;
  --amber-hi: #7d550f;
  --teal: #1f6f6c;
  --chip: rgba(38, 36, 31, .2);
  --on-amber: #fffdf7;
  --bar: rgba(38, 36, 31, .42);
  --barbg: rgba(38, 36, 31, .12);
  --amber-soft: rgba(154, 106, 21, .08);
  --amber-line: rgba(154, 106, 21, .32);
  --on-amber-line: rgba(255, 253, 247, .34);
  --teal-line: rgba(31, 111, 108, .35);
  --hair: rgba(38, 36, 31, .24);
  --tint: rgba(38, 36, 31, .05);
  --hovr: rgba(38, 36, 31, .022);
  --scrim: rgba(38, 36, 31, .34);
  --shadow: 0 26px 70px rgba(38, 36, 31, .22);
  --sel: rgba(154, 106, 21, .16);
}

/* --------------------------------------------------------------------------
   2. Base
   -------------------------------------------------------------------------- */

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--mono);
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 28px 28px;
  text-wrap: pretty;
}

a {
  color: var(--teal);
  text-decoration: underline;
  text-decoration-color: var(--teal-line);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--amber); text-decoration-color: var(--amber-line); }

::selection { background: var(--amber); color: var(--on-amber); }

input::placeholder { color: var(--fg4); }

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

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--amber-line);
  border-radius: 3px;
  padding: 10px 14px;
  font: 400 12px/1 var(--mono);
  text-decoration: none;
}

.skip-link:focus { left: 12px; top: 12px; }

/* Accessible name for icon-only controls. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.spacer { flex: 1; min-width: 8px; }

.rule { height: 1px; background: var(--line2); }

/* --------------------------------------------------------------------------
   3. Layout shells
   -------------------------------------------------------------------------- */

.page { min-height: 100vh; }

.shell {
  max-width: var(--shell);
  margin: 0 auto;
}

.body { padding: 0 var(--shell-pad) 96px; }

.layout {
  display: flex;
  gap: 60px;
  align-items: flex-start;
}

/*
 * Query container for the document column. Sections size themselves against
 * the column they actually occupy rather than the viewport — the contents rail
 * is removed at 900px, which widens this column, so a viewport breakpoint
 * would have to describe the same layout state in two disjoint ranges.
 */
.doc {
  flex: 1 1 0;
  min-width: 0;
  container-type: inline-size;
  container-name: doc;
}

/* --------------------------------------------------------------------------
   4. Header
   -------------------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg);
  border-bottom: 1px solid var(--line2);
}

.header-inner {
  padding: 11px var(--shell-pad);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.crumb { font: 500 11.5px/1 var(--mono); color: var(--fg4); }
.crumb-sep { font: 400 11.5px/1 var(--mono); color: var(--fg5); }
.crumb-file { font: 500 11.5px/1 var(--mono); color: var(--fg); }

.branch-chip {
  font: 400 10px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid var(--teal-line);
  border-radius: 2px;
  padding: 4px 7px;
}

.ghost-btn {
  appearance: none;
  cursor: pointer;
  background: none;
  border: 1px solid var(--chip);
  border-radius: 3px;
  padding: 6px 10px;
  display: flex;
  align-items: center;
  gap: 7px;
  font: 400 10.5px/1 var(--mono);
  color: var(--fg3);
  transition: color .15s, border-color .15s;
}

.ghost-btn:hover { border-color: var(--amber-line); color: var(--amber); }
.ghost-btn--icon { padding: 6px 9px; }
.ghost-btn-sep { color: var(--fg5); }

.seg {
  display: flex;
  align-items: center;
  border: 1px solid var(--chip);
  border-radius: 3px;
  overflow: hidden;
}

.seg-btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  padding: 6px 12px;
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .09em;
  text-transform: uppercase;
  background: transparent;
  color: var(--fg4);
  transition: color .15s, background .15s;
}

.seg-btn + .seg-btn { border-left: 1px solid var(--chip); }
.seg-btn:hover { color: var(--fg2); }
.seg-btn[aria-pressed="true"] { background: var(--amber-soft); color: var(--amber); }

/* Theme icons swap purely on the root attribute — no JS DOM juggling. */
html[data-theme="dark"] .icon-sun,
html[data-theme="light"] .icon-moon { display: none; }

/* --------------------------------------------------------------------------
   5. Hero
   -------------------------------------------------------------------------- */

.hero {
  display: flex;
  flex-wrap: wrap;
  gap: 56px;
  align-items: flex-start;
  padding: 72px 0 60px;
  border-bottom: 1px solid var(--line2);
}

.hero-main { flex: 1 1 480px; min-width: 0; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 20px;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--amber);
}

.eyebrow-text {
  font: 500 10.5px/1 var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--fg3);
}

.hero-name {
  margin: 0 0 22px;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(40px, 6.4vw, 72px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--fg1);
}

.hero-lede {
  margin: 0 0 14px;
  max-width: 36ch;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.45;
  color: var(--fg);
}

.hero-note {
  margin: 0 0 30px;
  max-width: 52ch;
  font: 400 13.5px/1.75 var(--mono);
  color: var(--fg3);
}

.cursor {
  display: inline-block;
  width: 7px;
  height: 15px;
  margin-left: 6px;
  vertical-align: -2px;
  background: var(--amber);
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  0%, 48% { opacity: 1; }
  49%, 100% { opacity: 0; }
}

.chip-links { display: flex; flex-wrap: wrap; gap: 9px; }

.chip-link {
  display: flex;
  align-items: stretch;
  text-decoration: none;
  border: 1px solid var(--chip);
  border-radius: 3px;
  overflow: hidden;
  font: 400 11.5px/1 var(--mono);
  transition: border-color .15s;
}

.chip-link:hover { border-color: var(--amber-line); }
.chip-key { padding: 8px 9px; background: var(--tint); color: var(--fg4); }
.chip-val { padding: 8px 11px; color: var(--fg); }
.chip-link:hover .chip-val { color: var(--fg1); }

/* "currently" card */

.now-card {
  flex: 0 1 268px;
  min-width: 238px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  padding: 20px 21px 21px;
}

.now-title {
  font: 500 10px/1 var(--mono);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 18px;
}

.now-stack { display: flex; flex-direction: column; gap: 15px; }

.now-org {
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.25;
  color: var(--fg1);
}

.now-loc {
  font: 400 11.5px/1.6 var(--mono);
  color: var(--fg3);
  margin-top: 3px;
}

.now-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font: 400 11.5px/1.5 var(--mono);
}

.now-row { display: flex; justify-content: space-between; gap: 12px; }
.now-key { color: var(--fg4); }
.now-val { margin: 0; text-align: right; }

/* --------------------------------------------------------------------------
   6. Contents rail
   -------------------------------------------------------------------------- */

.rail {
  flex: 0 0 168px;
  position: sticky;
  top: 96px;
  padding-top: 54px;
}

.rail-title {
  font: 500 10px/1 var(--mono);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--fg5);
  margin-bottom: 16px;
}

.rail-links { display: flex; flex-direction: column; gap: 2px; }

.rail-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 5px 0;
  text-decoration: none;
  font: 400 12px/1 var(--mono);
  color: var(--fg3);
  transition: color .2s;
}

.rail-link i {
  display: block;
  width: 8px;
  height: 1px;
  background: var(--fg5);
  transition: width .2s, background .2s;
}

.rail-link:hover { color: var(--fg); }
.rail-link:hover i { background: var(--fg3); }

.rail-link[data-active] { color: var(--amber); }
.rail-link[data-active] i { background: var(--amber); width: 16px; }

.rail-foot {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--line2);
  display: flex;
  flex-direction: column;
  gap: 9px;
  align-items: flex-start;
}

.link-btn {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-align: left;
  font: 400 11px/1.5 var(--mono);
  color: var(--fg4);
  transition: color .15s;
}

.link-btn:hover { color: var(--amber); }

.rail-pdf {
  text-decoration: none;
  font: 400 11px/1.5 var(--mono);
  color: var(--fg4);
  transition: color .15s;
}

.rail-pdf:hover { color: var(--amber); }

/* --------------------------------------------------------------------------
   7. Section scaffolding
   -------------------------------------------------------------------------- */

.sec {
  padding: 54px 0 8px;
  scroll-margin-top: var(--anchor-offset);
}

.sec--contact { padding-bottom: 0; }

.sec-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.sec-head--wide { margin-bottom: 26px; }

.sec-hash { font: 500 13px/1 var(--mono); color: var(--amber); }

.sec-title {
  margin: 0;
  font: 500 14px/1 var(--mono);
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--fg1);
}

.sec-rule { flex: 1; height: 1px; background: var(--line); }

.sec-note {
  margin: 0 0 26px;
  font: 400 12px/1.7 var(--mono);
  color: var(--fg4);
}

.sec-note--tight { margin-bottom: 8px; }
.sec-note--builds { margin-bottom: 24px; }

.prose {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(18px, 1.9vw, 21px);
  line-height: 1.62;
  color: var(--fg);
}

.prose--muted { color: var(--fg3); }
.prose--last { margin-bottom: 0; }
.prose em { font-style: italic; color: var(--amber); }

/* --------------------------------------------------------------------------
   8. how i work
   -------------------------------------------------------------------------- */

.principles { border-top: 1px solid var(--line); }

.principle {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 30px;
  align-items: baseline;
  padding: 19px 0 21px;
  border-bottom: 1px solid var(--line2);
}

.principle--last { border-bottom-color: var(--line); }

.principle-key {
  flex: 0 1 236px;
  display: flex;
  align-items: baseline;
  gap: 13px;
}

.principle-num {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 21px;
  line-height: 1;
  color: var(--teal);
}

.principle-name {
  font: 500 12.5px/1.4 var(--mono);
  letter-spacing: .03em;
  color: var(--fg1);
}

.principle-desc {
  flex: 1 1 340px;
  margin: 0;
  max-width: 58ch;
  font-family: var(--serif);
  font-weight: 300;
  font-size: 17.5px;
  line-height: 1.55;
  color: var(--fg2);
}

/* --------------------------------------------------------------------------
   9. experience
   -------------------------------------------------------------------------- */

.roles { display: flex; flex-direction: column; }

.role {
  padding: 30px 0 32px;
  border-top: 1px solid var(--line2);
}

.role--last { border-bottom: 1px solid var(--line2); }

.role-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: 6px;
}

.role-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(22px, 2.5vw, 27px);
  line-height: 1.2;
  color: var(--fg1);
}

.role-title--solo { margin-bottom: 6px; }
.slash { color: var(--fg4); }

.badge-current {
  font: 400 10px/1 var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--on-amber);
  background: var(--amber);
  border-radius: 2px;
  padding: 4px 7px;
}

.role-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-bottom: 16px;
  font: 400 12px/1.6 var(--mono);
  color: var(--fg3);
}

.role-meta--tight { margin-bottom: 6px; }
.role-org { color: var(--teal); }
.role-when { color: var(--fg4); }

.role-note {
  margin: 0 0 16px;
  font: 400 11.5px/1.6 var(--mono);
  color: var(--fg4);
}

.tenure {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 20px;
}

/*
 * The track must be the part that gives way when space runs out — at phone
 * widths a non-shrinking 340px bar left the label ~13px and wrapped "4 yr 1 mo"
 * onto three lines. Basis stays 340px so wide layouts are unchanged.
 */
.tenure-track {
  flex: 0 1 340px;
  height: 3px;
  background: var(--barbg);
  border-radius: 2px;
  overflow: hidden;
}

.tenure-fill { height: 100%; background: var(--bar); }
.tenure-fill--current { background: var(--amber); }

.tenure-label {
  flex: none;
  white-space: nowrap;
  font: 400 10.5px/1 var(--mono);
  color: var(--fg4);
}

.role-lede {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-weight: 300;
  font-size: 18px;
  line-height: 1.58;
  color: var(--fg2);
}

.bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.bullet {
  display: flex;
  gap: 11px;
  font: 400 13px/1.7 var(--mono);
  color: var(--fg2);
}

.bullet-mark { color: var(--teal); flex: none; }

/* --------------------------------------------------------------------------
   10. side builds
   -------------------------------------------------------------------------- */

.build-flagship {
  border-left: 2px solid var(--amber);
  background: var(--amber-soft);
  padding: 26px 28px 28px;
  margin-bottom: 14px;
  border-radius: 0 4px 4px 0;
}

.build-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 12px;
}

.build-name {
  font: 500 19px/1.2 var(--mono);
  color: var(--amber);
  text-decoration: none;
}

.build-name:hover { text-decoration: underline; text-decoration-color: var(--amber-line); }

.build-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  font: 400 10.5px/1.5 var(--mono);
  color: var(--fg4);
}

.build-lede {
  margin: 0 0 22px;
  max-width: 54ch;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(19px, 2.2vw, 23px);
  line-height: 1.45;
  color: var(--fg);
}

.build-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.btn-primary {
  background: var(--amber);
  color: var(--on-amber);
  font: 500 12px/1 var(--mono);
  padding: 12px 16px;
  border-radius: 3px;
  text-decoration: none;
  transition: background .15s;
}

.btn-primary:hover { background: var(--amber-hi); color: var(--on-amber); }

.btn-ghost {
  border: 1px solid var(--chip);
  color: var(--fg3);
  font: 400 12px/1 var(--mono);
  padding: 12px 16px;
  border-radius: 3px;
  text-decoration: none;
  transition: border-color .15s, color .15s;
}

.btn-ghost:hover { border-color: var(--amber-line); color: var(--fg); }

.tags { display: flex; flex-wrap: wrap; gap: 5px; }

.tag {
  font: 400 10.5px/1 var(--mono);
  color: var(--fg2);
  border: 1px solid var(--amber-line);
  border-radius: 2px;
  padding: 5px 7px;
}

.build-grid { display: flex; flex-wrap: wrap; gap: 14px; }

.build-card {
  flex: 1 1 420px;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 20px 22px 18px;
}

.build-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 9px;
  margin-bottom: 9px;
}

.build-card-name {
  font: 500 14px/1.2 var(--mono);
  color: var(--amber);
  text-decoration: none;
}

.build-card-name:hover { text-decoration: underline; text-decoration-color: var(--amber-line); }

.chip-wip {
  font: 400 9.5px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal);
  border: 1px solid var(--teal-line);
  border-radius: 2px;
  padding: 3px 5px;
}

.build-card-desc {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 300;
  font-size: 17px;
  line-height: 1.5;
  color: var(--fg2);
}

.build-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 14px;
  font: 400 10.5px/1.5 var(--mono);
  color: var(--fg4);
}

.meta-strong { color: var(--fg3); }

.build-more {
  flex: 0 1 250px;
  border: 1px dashed var(--hair);
  border-radius: 4px;
  padding: 20px 22px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 7px;
  text-decoration: none;
  transition: border-color .15s;
}

.build-more:hover { border-color: var(--amber-line); }
.build-more-title { font: 500 12.5px/1.3 var(--mono); color: var(--fg); }
.build-more-sub { font: 400 11px/1.5 var(--mono); color: var(--fg4); }

/*
 * Below 684px the card and the "more on GitHub" tile cannot share a line
 * (420px card basis + 14px gap + 250px tile basis), so the tile wraps. Left as
 * flex-basis:250px it would sit stranded under a full-width card — stretch it
 * to match instead.
 */
@container doc (width < 684px) {
  .build-more { flex-basis: 100%; }
}

/* --------------------------------------------------------------------------
   11. stack
   -------------------------------------------------------------------------- */

.stack { display: flex; flex-direction: column; gap: 28px; }

.stack-label {
  font: 500 11px/1 var(--mono);
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--fg4);
  margin-bottom: 13px;
}

.stack-label--accent { color: var(--amber); }
.stack-label--teal { color: var(--teal); margin-bottom: 12px; }

.pills { display: flex; flex-wrap: wrap; gap: 7px; }

.pill {
  font: 400 12px/1 var(--mono);
  color: var(--fg2);
  border: 1px solid var(--chip);
  border-radius: 3px;
  padding: 7px 10px;
}

.pill--accent {
  color: var(--fg);
  border-color: var(--amber-line);
  background: var(--amber-soft);
}

.reliability {
  border-left: 2px solid var(--teal);
  padding: 2px 0 2px 20px;
  margin-top: 4px;
}

.reliability-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 26px;
  font: 400 12.5px/1.6 var(--mono);
  color: var(--fg2);
}

/* --------------------------------------------------------------------------
   12. education
   -------------------------------------------------------------------------- */

.edu {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 40px;
  align-items: baseline;
}

.edu-main { flex: 1 1 300px; min-width: 0; }

.edu-degree {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(20px, 2.2vw, 24px);
  line-height: 1.25;
  color: var(--fg1);
}

.edu-track {
  font: 400 12.5px/1.7 var(--mono);
  color: var(--fg3);
  margin-top: 5px;
}

.edu-school { font: 400 12.5px/1.7 var(--mono); color: var(--fg3); }

/* --------------------------------------------------------------------------
   13. contact
   -------------------------------------------------------------------------- */

.contact-card {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  padding: clamp(24px, 4vw, 38px);
}

.contact-lede {
  margin: 0 0 26px;
  max-width: 44ch;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(21px, 2.6vw, 27px);
  line-height: 1.4;
  color: var(--fg1);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn-amber {
  text-decoration: none;
  background: var(--amber);
  color: var(--on-amber);
  font: 500 12.5px/1 var(--mono);
  letter-spacing: .04em;
  padding: 14px 20px;
  border-radius: 3px;
  transition: background .15s;
}

.btn-amber:hover { background: var(--amber-hi); color: var(--on-amber); }

/*
 * Split button: the address and the copy action share one shell, so the icon
 * reads as "copy this address" rather than a stray verb next to it. Same
 * joined-segments idiom as the header's .seg and the hero's .chip-link.
 */
.btn-group {
  display: flex;
  align-items: stretch;
  border-radius: 3px;
  overflow: hidden;
}

.btn-group .btn-amber { border-radius: 0; }

.btn-group-copy {
  appearance: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 0 13px;
  border: 0;
  border-left: 1px solid var(--on-amber-line);
  background: var(--amber);
  color: var(--on-amber);
  transition: background .15s;
}

.btn-group-copy:hover { background: var(--amber-hi); }
.btn-group-copy:focus-visible { outline-offset: -3px; }

/* Confirmation is the icon swap — driven by the [data-copied] flag JS sets. */
.btn-group-copy .icon-check { display: none; }
.btn-group-copy[data-copied] .icon-copy { display: none; }
.btn-group-copy[data-copied] .icon-check { display: block; }

/*
 * The group cannot wrap internally the way two separate buttons could, so on
 * the narrowest cards it would be clipped by the overflow:hidden shell. Give it
 * the full row and tighten the type and padding enough for the address to fit.
 */
@media (max-width: 430px) {
  .btn-group { width: 100%; }

  .btn-group .btn-amber {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 11.5px;
    padding: 14px 12px;
    text-align: center;
  }

  .btn-group-copy { min-width: 38px; padding: 0 11px; }
}

.btn-outline {
  appearance: none;
  cursor: pointer;
  background: none;
  text-decoration: none;
  border: 1px solid var(--chip);
  color: var(--fg3);
  font: 400 12.5px/1 var(--mono);
  padding: 14px 18px;
  border-radius: 3px;
  transition: border-color .15s, color .15s;
}

.btn-outline--teal:hover { border-color: var(--teal-line); color: var(--teal); }
.btn-outline--amber:hover { border-color: var(--amber-line); color: var(--amber); }

/*
 * Narrow cards: the remaining controls take a full row each, matching the
 * threshold where the split button already goes full width — so the three read
 * as one stack instead of a ragged mix of intrinsic widths.
 */
@media (max-width: 430px) {
  .contact-actions .btn-outline {
    width: 100%;
    text-align: center;
  }
}

.contact-rule { margin: 28px 0 20px; }

/*
 * space-between rather than `margin-left:auto` on the second span: each flex
 * line is justified independently, so the two sit apart while they share a
 * line, and each falls back to the left edge once they wrap onto their own.
 */
.contact-foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px 32px;
  align-items: center;
  font: 400 12px/1.7 var(--mono);
  color: var(--fg4);
}

/* --------------------------------------------------------------------------
   14. raw markdown view
   -------------------------------------------------------------------------- */

.raw-section { display: none; padding: 54px 0 0; }

.raw-panel {
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.raw-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  background: var(--tint);
  border-bottom: 1px solid var(--line);
  font: 400 11px/1 var(--mono);
  color: var(--fg3);
}

.raw-bar-name { color: var(--amber); }

.raw-pre {
  margin: 0;
  padding: 26px 20px 30px;
  font: 400 12.5px/1.85 var(--mono);
  color: var(--fg2);
  white-space: pre-wrap;
  overflow-wrap: break-word;
}

/* --------------------------------------------------------------------------
   15. footer
   -------------------------------------------------------------------------- */

.site-footer {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid var(--line2);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  justify-content: space-between;
  font: 400 11px/1.7 var(--mono);
  color: var(--fg5);
}

/* --------------------------------------------------------------------------
   16. back to top
   -------------------------------------------------------------------------- */

.to-top {
  position: fixed;
  right: 0;
  bottom: 28px;
  z-index: 40;
  appearance: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 15px 9px;
  background: var(--card);
  border: 1px solid var(--line);
  border-right: 0;
  border-radius: 4px 0 0 4px;
  box-shadow: -6px 0 22px var(--scrim);
  color: var(--fg3);
  transition: color .15s, border-color .15s;
}

.to-top[hidden] { display: none; }
.to-top:hover { color: var(--amber); border-color: var(--amber-line); }

.to-top-label {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font: 500 9.5px/1 var(--mono);
  letter-spacing: .2em;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   17. command palette
   -------------------------------------------------------------------------- */

.pal-scrim {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: var(--scrim);
  backdrop-filter: blur(3px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 18px 18px;
}

.pal-scrim[hidden] { display: none; }

.pal {
  width: 100%;
  max-width: 560px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow);
  overflow: hidden;
  animation: palIn .13s ease-out;
}

@keyframes palIn {
  from { opacity: 0; transform: translateY(-6px) scale(.985); }
  to { opacity: 1; transform: none; }
}

.pal-input-row {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 15px 17px;
  border-bottom: 1px solid var(--line);
}

.pal-caret { font: 500 13px/1 var(--mono); color: var(--amber); }

.pal-input {
  flex: 1;
  min-width: 0;
  appearance: none;
  background: none;
  border: 0;
  outline: none;
  font: 400 14px/1.4 var(--mono);
  color: var(--fg);
}

.kbd {
  font: 400 9.5px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--fg5);
  border: 1px solid var(--chip);
  border-radius: 3px;
  padding: 4px 6px;
}

.pal-list {
  position: relative; /* so row offsetTop is measured against this scroller */
  max-height: min(52vh, 340px);
  overflow-y: auto;
  padding: 6px 0;
}

.pal-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 17px 9px 0;
  cursor: pointer;
  background: transparent;
}

.pal-item[data-sel="1"] { background: var(--sel); }

.pal-mark { flex: 0 0 3px; align-self: stretch; background: transparent; }
.pal-item[data-sel="1"] .pal-mark { background: var(--amber); }

.pal-group {
  flex: 0 0 62px;
  padding-left: 14px;
  font: 400 9.5px/1.3 var(--mono);
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--fg5);
}

.pal-title {
  flex: 1;
  min-width: 0;
  font: 400 13px/1.4 var(--mono);
  color: var(--fg);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pal-item[data-sel="1"] .pal-title { color: var(--amber); }

.pal-hint {
  font: 400 10px/1 var(--mono);
  color: var(--fg4);
  border: 1px solid var(--chip);
  border-radius: 3px;
  padding: 4px 6px;
  flex: none;
}

.pal-empty {
  padding: 22px 17px;
  font: 400 12.5px/1.6 var(--mono);
  color: var(--fg4);
}

.pal-empty b { font-weight: 400; color: var(--amber); }

.pal-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 11px 17px;
  border-top: 1px solid var(--line);
  background: var(--tint);
  font: 400 10px/1.5 var(--mono);
  color: var(--fg4);
}

/* --------------------------------------------------------------------------
   18. State hooks (mirrors the design's data-attribute switches)
   -------------------------------------------------------------------------- */

[data-view="raw"] [data-rendered] { display: none; }
[data-view="raw"] .raw-section { display: block; }

[data-order="old"] [data-roles] { flex-direction: column-reverse; }
[data-bars="off"] [data-bar] { display: none; }
[data-compact="on"] li[data-b]:nth-child(n + 3) { display: none; }

/* --------------------------------------------------------------------------
   19. Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 900px) {
  [data-rail] { display: none; }
  [data-hero] { gap: 28px; }
  .layout { gap: 0; }
}

@media (max-width: 620px) {
  [data-pad] { padding-left: 20px; padding-right: 20px; }
  .hero { padding-top: 52px; }
  .to-top { bottom: 16px; }
  .pal-scrim { padding: 8vh 12px 12px; }
  .pal-group { display: none; }
}

/* --------------------------------------------------------------------------
   20. Motion + print
   -------------------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
  .cursor { opacity: 1; }
}

@media print {
  .site-header, .rail, .to-top, .pal-scrim, .skip-link, .raw-section { display: none !important; }
  body { background: #fff; color: #000; background-image: none; }
  .layout { display: block; }
  .role, .principle { break-inside: avoid; }
}