/* Kanari: a field guide pinned to a canary-yellow board.
   Yellow ground, white specimen plates, one ink. State colours only ever mean a song. */
:root {
  color-scheme: light;
  --yolk: #F4CF48;        /* ground: the canary's own yellow */
  --yolk-deep: #E9BF2E;   /* hairline fills and pressed states on the ground */
  --plate: #FFFBEE;       /* specimen plates and cards */
  --plate-2: #F5EEDA;     /* rows and insets inside a plate */
  --ink: #1B1810;         /* text, outlines, the one button */
  --ink-2: #3A3426;
  --muted: #574D32;       /* labels on yellow, 5:1 */
  --muted-p: #665D4B;     /* labels on a plate, 6:1 */
  --line: rgba(27, 24, 16, .14);
  --line-2: rgba(27, 24, 16, .28);
  --sings: #2B7448;   --sings-bg: #DCEFD8;
  --squints: #8F5300; --squints-bg: #FCE6BE;
  --squawks: #B5361F; --squawks-bg: #F8D8CE;

  --display: "Young Serif", Georgia, "Times New Roman", serif;
  --text: "Schibsted Grotesk", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  --gutter: clamp(16px, 4vw, 40px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html[data-motion="off"] { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--yolk);
  color: var(--ink);
  font: 400 16px/1.55 var(--text);
  -webkit-font-smoothing: antialiased;
}
.page { overflow-x: clip; }
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
code, .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; border-radius: 6px; }

.wrap {
  max-width: 1240px;
  margin-inline: auto;
  padding-left: max(var(--gutter), env(safe-area-inset-left, 0px));
  padding-right: max(var(--gutter), env(safe-area-inset-right, 0px));
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 52px; padding: 0 26px;
  border-radius: 999px; border: 2px solid var(--ink);
  font: 600 16px/1 var(--text); text-decoration: none;
  transition: transform .12s var(--ease), box-shadow .12s var(--ease);
}
.btn-ink { background: var(--ink); color: var(--yolk); box-shadow: 0 4px 0 rgba(27, 24, 16, .28); }
.btn-ink:hover { transform: translateY(-1px); box-shadow: 0 5px 0 rgba(27, 24, 16, .28); }
.btn-ink:active { transform: translateY(3px); box-shadow: 0 1px 0 rgba(27, 24, 16, .28); }
.btn-sm { height: 40px; padding: 0 18px; font-size: 15px; }
.btn[aria-disabled="true"] { background: transparent; color: var(--ink); box-shadow: none; cursor: default; }
.btn[aria-disabled="true"]:hover, .btn[aria-disabled="true"]:active { transform: none; }
.link { font-weight: 600; text-underline-offset: 4px; text-decoration-thickness: 2px; }
.link::after { content: " \2193"; }
.link[target="_blank"]::after { content: " \2197"; }

/* ---------- header ---------- */
body::before {
  content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px);
  z-index: 10; background: var(--yolk);
}
.top {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 9;
  background: var(--yolk);
  border-bottom: 2px solid transparent;
  transition: border-color .25s var(--ease);
}
.top.scrolled { border-bottom-color: var(--ink); }
.top-in { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: block; width: 112px; }
.nav { display: flex; gap: 26px; margin-left: auto; }
.nav a { font-weight: 500; text-decoration: none; color: var(--ink-2); }
.nav a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 2px; }

/* ---------- plates (the field guide's specimen cards) ---------- */
.plate {
  margin: 0;
  background: var(--plate);
  border: 2px solid var(--ink);
  border-radius: 6px;
  box-shadow: 6px 6px 0 var(--ink);
  position: relative;
}
.plate::before {             /* the inner rule of a printed plate */
  content: ""; position: absolute; inset: 7px;
  border: 1px solid var(--line-2); border-radius: 2px; pointer-events: none;
}
.plate-cap {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 16px;
  padding: 12px 20px 16px; border-top: 1px solid var(--line);
  font: 400 13px/1.4 var(--mono); color: var(--muted-p);
}
.plate-cap i { font-family: var(--display); font-style: italic; font-size: 15px; color: var(--ink-2); }
.demo::before { content: "\25CF  "; color: var(--squints); }

/* ---------- hero ---------- */
.hero { padding-block: clamp(36px, 6vw, 80px) clamp(64px, 8vw, 110px); }
.hero-in {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(32px, 5vw, 72px); align-items: center;
}
.kicker {
  font: 500 12px/1.3 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
  margin-bottom: 20px;
}
h1 {
  font: 400 clamp(46px, 6.2vw, 88px)/0.98 var(--display);
  letter-spacing: -0.025em;
  text-wrap: balance;
}
h1 em { display: block; font-style: italic; }
.lede { margin-top: 26px; max-width: 34em; font-size: 18px; line-height: 1.55; color: var(--ink-2); }
.lede strong { color: var(--ink); font-weight: 600; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 24px; margin-top: 32px; }
.facts {
  list-style: none; padding: 0; margin: 30px 0 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.facts li {
  font: 500 13px/1 var(--mono); padding: 8px 12px;
  border: 1.5px solid var(--ink); border-radius: 999px;
}

/* the specimen plate */
.plate-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 18px 20px 0;
}
.plate-no { font: 400 20px/1 var(--display); }
.tabs { display: inline-flex; border: 1.5px solid var(--ink); border-radius: 999px; padding: 3px; gap: 2px; }
.tabs button {
  appearance: none; border: 0; background: transparent; color: var(--ink-2);
  font: 500 13px/1 var(--mono); padding: 8px 12px; border-radius: 999px; cursor: pointer;
  min-height: 34px;
}
.tabs button:hover { color: var(--ink); background: var(--plate-2); }
.tabs button[aria-selected="true"] { background: var(--ink); color: var(--plate); }

.specimen-body {
  display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
  gap: 8px 20px; align-items: center; padding: 8px 20px 18px;
}
.specimen-bird { aspect-ratio: 1; max-width: 300px; width: 100%; justify-self: center; }
.specimen-bird svg { width: 100%; height: auto; }
.hop { animation: hop .46s var(--ease); }
@keyframes hop {
  0% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  100% { transform: translateY(0); }
}

.reading { min-width: 0; }
.rd-coin { display: flex; align-items: center; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.rd-pic { width: 40px; height: 40px; flex: none; }
.rd-name { font-weight: 600; line-height: 1.2; }
.rd-name .mono { font-weight: 500; color: var(--muted-p); font-size: 13px; }
.rd-song { margin-left: auto; }
.rd-list { list-style: none; margin: 0; padding: 0; }
.rd-list li {
  display: grid; grid-template-columns: 22px minmax(0, 1fr) auto; gap: 2px 10px; align-items: start;
  padding: 10px 0; border-bottom: 1px dashed var(--line-2);
}
.rd-list li:last-child { border-bottom: 0; }
.rd-n { font: 500 13px/20px var(--mono); color: var(--muted-p); }
.rd-k { font-weight: 600; font-size: 15px; line-height: 20px; }
.rd-v { grid-column: 2 / 4; font-size: 14px; line-height: 1.4; color: var(--ink-2); }
.print { animation: print .42s var(--ease) both; animation-delay: calc(var(--i, 0) * 90ms); }
@keyframes print {
  from { opacity: .001; transform: translateY(5px); }
  to { opacity: 1; transform: none; }
}
.rd-say { margin-top: 10px; font: 400 17px/1.35 var(--display); }

/* chips: a song or a mark's state. Colour always means the same thing. */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font: 500 12px/1 var(--mono); letter-spacing: .04em; text-transform: uppercase;
  padding: 6px 9px; border-radius: 999px; border: 1.5px solid currentColor; white-space: nowrap;
}
.chip::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.chip-sings, .chip-clear { color: var(--sings); background: var(--sings-bg); }
.chip-squints, .chip-odd { color: var(--squints); background: var(--squints-bg); }
.chip-squawks, .chip-red { color: var(--squawks); background: var(--squawks-bg); }

/* ---------- sections ---------- */
.sec { padding-block: clamp(64px, 9vw, 120px); border-top: 2px solid var(--ink); }
.sec-head { max-width: 640px; }
h2 {
  font: 400 clamp(32px, 4vw, 54px)/1.02 var(--display);
  letter-spacing: -0.02em; text-wrap: balance;
}
.sec-head p { margin-top: 16px; font-size: 18px; color: var(--ink-2); max-width: 36em; }
h3 { font: 600 19px/1.25 var(--text); }

/* songs: three plates side by side, like a guide's plumage variations */
.songs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 48px; }
.song { display: flex; flex-direction: column; }
.song-bird { padding: 26px 26px 0; }
.song-bird svg { width: 100%; max-width: 240px; margin-inline: auto; height: auto; }
.song figcaption { padding: 14px 24px 26px; display: grid; gap: 10px; border-top: 1px solid var(--line); margin-top: 10px; }
.fig { font: 400 13px/1 var(--mono); color: var(--muted-p); }
.song p { color: var(--ink-2); }

/* field marks: a coin page with pins, and the key beside it */
.marks-in {
  display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 48px clamp(32px, 5vw, 64px); align-items: start;
}
.marks-in .sec-head { grid-column: 1 / -1; }
.coinpage { padding-top: 6px; }
.cp-top { display: flex; align-items: center; gap: 14px; padding: 20px 22px 18px; border-bottom: 1px solid var(--line); }
.cp-pic { width: 52px; height: 52px; flex: none; }
.cp-id { min-width: 0; display: grid; gap: 4px; }
.cp-name { font: 400 24px/1.1 var(--display); display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.cp-name .mono { font-size: 14px; color: var(--muted-p); }
.cp-by { font-size: 13px; color: var(--muted-p); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.cp-kanari { width: 46px; margin-left: auto; flex: none; }
.cp-cols { display: grid; grid-template-columns: 1fr 1fr; }
.cp-col { padding: 16px 22px 18px; min-width: 0; }
.cp-col + .cp-col { border-left: 1px solid var(--line); }
.cp-label { font: 500 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted-p); display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.cp-rows { list-style: none; margin: 0; padding: 0; font-size: 13px; }
.cp-rows li { display: grid; grid-template-columns: 1.3fr .8fr 1fr; gap: 8px; padding: 7px 8px; border-radius: 4px; white-space: nowrap; }
.cp-rows li span:last-child { text-align: right; }
.cp-rows li.hl { background: var(--squints-bg); }
.pin {
  display: inline-grid; place-items: center; flex: none;
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--ink); color: var(--yolk);
  font: 500 12px/1 var(--mono); letter-spacing: 0;
}
.pin-lg { width: 36px; height: 36px; font-size: 15px; }

.marklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.marklist li { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 18px; padding: 20px 0; border-bottom: 1.5px solid var(--ink); }
.marklist li:first-child { padding-top: 0; }
.marklist li:last-child { border-bottom: 0; }
.marklist h3 { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 10px; font-family: var(--display); font-weight: 400; font-size: 24px; }
.aka { font: 400 13px/1 var(--mono); color: var(--muted); }
.marklist p { margin-top: 6px; color: var(--ink-2); }

/* the one ink band */
.band { background: var(--ink); color: var(--plate); padding-block: clamp(64px, 9vw, 112px); }
.band-in { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: clamp(32px, 6vw, 80px); align-items: center; }
.band-mark { max-width: 300px; width: 100%; justify-self: center; }
.band h2 { color: var(--yolk); }
.promises { list-style: none; margin: 32px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; }
.promises li { border-top: 2px solid var(--yolk); padding-top: 16px; }
.promises h3 { color: var(--plate); }
.promises p { margin-top: 8px; color: #D9D2BE; }
.band-note { margin-top: 36px; font: 400 14px/1.5 var(--mono); color: #CFC7B0; }

/* setup */
.setup-in { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 40px clamp(32px, 5vw, 72px); align-items: start; }
.steps { list-style: none; margin: 0; padding: 12px 26px; }
.steps li { display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 16px; padding: 20px 0; border-bottom: 1px dashed var(--line-2); }
.steps li:last-child { border-bottom: 0; }
.step-n { font: 400 34px/1 var(--display); }
.steps p { margin-top: 6px; color: var(--ink-2); }
.steps code { font-size: 14px; background: var(--plate-2); border: 1px solid var(--line); padding: 1px 6px; border-radius: 4px; overflow-wrap: anywhere; }

/* footer */
.foot { border-top: 2px solid var(--ink); padding-block: 44px calc(44px + env(safe-area-inset-bottom, 0px)); }
.foot-in { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 24px 48px; align-items: center; }
.foot-brand { width: 120px; }
.foot-copy { font-size: 14px; color: var(--muted); display: grid; gap: 4px; }
.foot-side { display: flex; gap: 18px; align-items: center; }
.foot-x { font-weight: 600; font-size: 14px; }
.motion {
  appearance: none; background: transparent; border: 1.5px solid var(--ink); color: var(--ink);
  font: 500 13px/1 var(--mono); padding: 10px 14px; border-radius: 999px; cursor: pointer; min-height: 40px;
}
.motion:hover { background: var(--yolk-deep); }

/* motion switch: off means every frame is complete and still */
html[data-motion="off"] *, html[data-motion="off"] *::before, html[data-motion="off"] *::after {
  animation: none !important; transition: none !important;
}

/* ---------- smaller screens ---------- */
@media (max-width: 1020px) {
  .hero-in { grid-template-columns: minmax(0, 1fr); }
  .marks-in { grid-template-columns: minmax(0, 1fr); }
  .setup-in { grid-template-columns: minmax(0, 1fr); }
  .band-in { grid-template-columns: minmax(0, 1fr); }
  .band-mark { max-width: 160px; justify-self: start; }
  .promises { grid-template-columns: minmax(0, 1fr); gap: 22px; }
}
@media (max-width: 760px) {
  .nav { display: none; }
  .top-in { justify-content: space-between; height: 60px; }
  .songs { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .song { display: grid; grid-template-columns: 132px minmax(0, 1fr); align-items: center; }
  .song-bird { padding: 14px 0 14px 14px; }
  .song figcaption { border-top: 0; margin-top: 0; padding: 18px 20px 18px 8px; }
  .foot-in { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .specimen-body { grid-template-columns: minmax(0, 1fr); padding-top: 0; }
  .specimen-bird { max-width: 210px; }
  .plate-head { padding-top: 16px; }
  .tabs { width: 100%; }
  .tabs button { flex: 1; padding-inline: 6px; }
  .cp-cols { grid-template-columns: minmax(0, 1fr); }
  .cp-col + .cp-col { border-left: 0; border-top: 1px solid var(--line); }
  .cp-top { padding-inline: 18px; }
  .cp-col { padding-inline: 18px; }
  .plate { box-shadow: 4px 4px 0 var(--ink); }
  .actions .btn { width: 100%; }
  .steps { padding-inline: 18px; }
}