/* Tokens ---------------------------------------------------------------- */
:root {
  --color-background: #eef1ec;   /* pale sage: calm, not the usual cream */
  --color-surface: #ffffff;
  --color-ink: #17252a;          /* deep slate */
  --color-ink-muted: #4f5f65;
  --color-rule: #cfd6cf;
  --color-accent: #1f7a5a;       /* the "join call" green */
  --color-accent-ink: #ffffff;
  --color-problem: #9c2f55;      /* raspberry, for things worth fixing */
  --color-problem-tint: #f6e4ea;
  --color-good: #1f7a5a;
  --color-good-tint: #dcefe5;
  --color-tile: #1c2427;         /* video-call tile */

  --font-body: "Atkinson Hyperlegible Next Variable", system-ui, sans-serif;

  --text-small: 1rem;
  --text-body: 1.1875rem;        /* 19px: generous for older readers */
  --text-h3: 1.375rem;
  --text-h2: 2rem;
  --text-h1: clamp(2.25rem, 1.4rem + 3.4vw, 3.75rem);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;

  --measure: 36em;
  --radius-tile: 14px;
  --radius-control: 10px;
}

/* Base ------------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

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

body {
  margin: 0;
  background: var(--color-background);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.55;
}

h1, h2, h3 { line-height: 1.15; margin: 0 0 var(--space-2); }
h1 { font-size: var(--text-h1); font-weight: 700; letter-spacing: -0.02em; max-width: 14em; }
h2 { font-size: var(--text-h2); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: var(--text-h3); font-weight: 700; }
p { margin: 0 0 var(--space-2); max-width: var(--measure); }
img, video { display: block; max-width: 100%; }

a { color: var(--color-accent); }
:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }

/* Header / footer --------------------------------------------------------- */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: var(--space-2) clamp(1rem, 4vw, 3rem);
}
.wordmark { font-weight: 700; font-size: 1.25rem; color: var(--color-ink); text-decoration: none; letter-spacing: -0.01em; }
.header-links { display: flex; gap: var(--space-3); }
.header-link { color: var(--color-ink-muted); }

.site-footer {
  padding: var(--space-4) clamp(1rem, 4vw, 3rem) var(--space-5);
  color: var(--color-ink-muted);
  font-size: var(--text-small);
  border-top: 1px solid var(--color-rule);
}

main > section { padding: var(--space-5) clamp(1rem, 4vw, 3rem); }

/* Hero ------------------------------------------------------------------ */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: var(--space-4);
  align-items: center;
  padding-top: var(--space-4);
}
.lede { font-size: 1.3rem; color: var(--color-ink-muted); }
.hero .button { margin-top: var(--space-2); }

.hero-tiles {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  padding: 0.5rem;
  background: #0f1517;           /* the call window around the tiles */
  border-radius: calc(var(--radius-tile) + 0.5rem);
}
.hero-tiles figcaption {
  grid-column: 1 / -1;
  color: #c9d3d6;
  font-size: var(--text-small);
  padding: 0.25rem 0.5rem 0.25rem;
}

/* Video-call tile: the one visual motif of the site */
.call-tile {
  position: relative;
  aspect-ratio: 4 / 3;
  background: var(--color-tile);
  border-radius: var(--radius-tile);
  overflow: hidden;
}
.call-tile img, .call-tile video { width: 100%; height: 100%; object-fit: cover; }
.tile-name {
  position: absolute;
  left: 0.6rem;
  bottom: 0.6rem;
  padding: 0.15rem 0.6rem;
  background: rgba(15, 21, 23, 0.72);
  color: #fff;
  border-radius: 6px;
  font-size: 0.95rem;
}

/* Steps ------------------------------------------------------------------ */
.step { border-top: 1px solid var(--color-rule); }
.step-number { color: var(--color-accent); font-weight: 700; margin-bottom: var(--space-1); }
.subsection { margin-top: var(--space-4); }

/* Buttons and fields */
.button {
  display: inline-block;
  font: inherit;
  font-weight: 700;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-control);
  border: 2px solid var(--color-ink);
  background: var(--color-surface);
  color: var(--color-ink);
  text-decoration: none;
  cursor: pointer;
}
.button-primary { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }
.button:disabled { opacity: 0.45; cursor: not-allowed; }

.device-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3) var(--space-4);
  max-width: 60rem;
  margin-top: var(--space-3);
}
.device-panel > .notice, .device-panel > .field-note, .device-panel-intro { grid-column: 1 / -1; }
.device-panel-intro { margin: 0; }
.field label { display: block; font-weight: 700; margin-bottom: 0.35rem; }
.field select {
  width: 100%;
  font: inherit;
  padding: 0.65rem 0.75rem;
  border: 2px solid var(--color-ink-muted);
  border-radius: var(--radius-control);
  background: var(--color-surface);
  color: var(--color-ink);
}
.field-note { color: var(--color-ink-muted); font-size: var(--text-small); margin-top: 0.4rem; }
.error-message { color: var(--color-problem); font-weight: 700; margin-top: var(--space-2); }

.notice { padding: var(--space-3); border-radius: var(--radius-control); }
.notice h3 { font-size: 1.2rem; }
.notice p:last-child { margin-bottom: 0; }
.notice-problem { background: var(--color-problem-tint); border-left: 6px solid var(--color-problem); }
.notice-prompt { background: var(--color-good-tint); border-left: 6px solid var(--color-accent); }
.notice .button { margin-top: var(--space-1); }
#mic-compare { margin-top: var(--space-3); max-width: 34rem; }

/* Recorder */
.recorder { margin-top: var(--space-3); max-width: 34rem; }
.self-view { width: 100%; height: 100%; object-fit: cover; }
.mirrored { transform: scaleX(-1); }
.recording-badge {
  display: inline-block; vertical-align: middle;
  background: #c62828; color: #fff; font-weight: 700;
  padding: 0.2rem 0.7rem; border-radius: 6px;
}
.mic-level { margin-bottom: var(--space-2); }
.mic-level-label { font-weight: 700; margin-bottom: 0.35rem; }
.mic-level .meter-fill { transition: width 0.05s linear; }
.recorder-controls .button { margin: 0 0.5rem 0.75rem 0; }
.recorder-controls .field { margin-bottom: var(--space-2); }
.read-aloud q { font-weight: 700; }

/* Kept recordings, for comparing microphones */
.clip-library { margin-top: var(--space-4); }
.clip-library h4 { font-size: var(--text-h3); margin: 0 0 0.25rem; }
.clip-list {
  list-style: none; margin: var(--space-3) 0 0; padding: 0;
  display: grid; gap: var(--space-2);
  max-width: 34rem;
}
.clip-list li {
  padding: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-control);
}
.clip-list audio { width: 100%; margin: 0.4rem 0; }
.clip-caption { margin: 0; font-weight: 700; }
.clip-meta { margin: 0; color: var(--color-ink-muted); font-size: var(--text-small); }
.clip-tag {
  display: inline-block; margin-left: 0.4rem; padding: 0 0.45rem;
  background: var(--color-problem-tint); color: var(--color-problem);
  border-radius: 5px; font-size: 0.85rem; font-weight: 700;
}
.clip-actions { display: flex; gap: var(--space-2); margin-top: 0.4rem; }
.clip-action {
  padding: 0; border: 0; background: none;
  color: var(--color-ink-muted); font: inherit; font-size: var(--text-small);
  text-decoration: underline; cursor: pointer;
}
.clip-label-form { display: flex; gap: 0.5rem; margin: 0.4rem 0; }
.clip-label-form input {
  flex: 1; min-width: 0; font: inherit; padding: 0.45rem 0.6rem;
  border: 2px solid var(--color-ink-muted); border-radius: var(--radius-control);
}
.clip-label-form .button { padding: 0.45rem 1rem; }

.result { margin-top: var(--space-3); padding: var(--space-3); border-radius: var(--radius-control); max-width: var(--measure); }
.result h4 { margin: 0 0 0.5rem; font-size: 1.2rem; }
.result p:last-child { margin-bottom: 0; }
.result-good { background: var(--color-good-tint); border-left: 6px solid var(--color-good); }
.result-problem { background: var(--color-problem-tint); border-left: 6px solid var(--color-problem); }
.result audio { width: 100%; margin: 0.5rem 0 1rem; }

/* Echo test */
.echo-test { margin-top: var(--space-3); }
.echo-progress { margin-top: var(--space-3); max-width: var(--measure); }
.echo-status { font-weight: 700; font-size: 1.3rem; }
.meter { height: 14px; background: var(--color-rule); border-radius: 7px; overflow: hidden; }
.meter-fill { height: 100%; width: 0%; background: var(--color-accent); transition: width 0.1s linear; }

/* Compare: your camera beside each example ----------------------------- */
.compare {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-4);
  align-items: start;
}
.compare-self { position: sticky; top: var(--space-2); }
.call-tile-self { box-shadow: 0 0 0 3px var(--color-accent); }
.camera-off a { color: #ffffff; }  /* the accent green is too dark on the tile */
.camera-off {
  position: absolute; inset: 0; margin: 0; max-width: none;
  display: grid; place-items: center; text-align: center; padding: var(--space-3);
  color: #c9d3d6;
}
.compare-list { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-5); }
.problem h3 { margin-top: var(--space-3); }
.problem .fix { color: var(--color-ink); }
.problem .fix-label { font-weight: 700; }
.problem .fix + .fix { margin-top: -0.5rem; }
.problem-hint {
  display: inline-block; margin-top: var(--space-2);
  background: var(--color-problem-tint); color: var(--color-problem);
  font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 6px;
}
.looks-like-me {
  display: flex; align-items: center; gap: 0.75rem;
  margin-top: var(--space-2);
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-ink-muted);
  border-radius: var(--radius-control);
  background: var(--color-surface);
  font-weight: 700;
  cursor: pointer;
  width: fit-content;
}
.looks-like-me input { width: 1.4rem; height: 1.4rem; accent-color: var(--color-problem); }
.looks-like-me:has(input:checked) { border-color: var(--color-problem); background: var(--color-problem-tint); }

/* Report ------------------------------------------------------------------ */
.report {
  background: var(--color-surface);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-tile);
  padding: var(--space-4);
  margin: var(--space-3) 0;
  max-width: 48rem;
}
.report h3 { font-size: 1.5rem; }
.report h4 { font-size: 1.15rem; margin: var(--space-3) 0 var(--space-1); }
.checklist { list-style: none; padding: 0; margin: 0; }
.checklist li {
  display: grid;
  grid-template-columns: 1.6rem 1fr;
  gap: 0.75rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--color-rule);
}
.checklist li::before {
  content: "";
  width: 1.4rem; height: 1.4rem;
  border: 2px solid var(--color-ink);
  border-radius: 4px;
  margin-top: 0.15rem;
}
.checklist strong { display: block; }
.checklist .product { color: var(--color-ink-muted); font-size: var(--text-small); }
.report-empty { color: var(--color-ink-muted); }

/* Organizers */
.organizers { background: var(--color-surface); border-top: 1px solid var(--color-rule); }
.invite-text {
  margin: var(--space-3) 0;
  padding: var(--space-3);
  border-left: 6px solid var(--color-accent);
  background: var(--color-background);
  max-width: var(--measure);
  font-size: 1.3rem;
}
.copy-status { margin-left: var(--space-2); color: var(--color-accent); font-weight: 700; }

/* Guide pages ("More about this") ----------------------------------------- */
.guide { max-width: 46rem; padding: var(--space-4) clamp(1rem, 4vw, 3rem) var(--space-5); }
.guide h2 { font-size: 1.6rem; margin-top: var(--space-4); }
.guide-compare {
  margin: var(--space-4) 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem;
  padding: 0.5rem; background: #0f1517; border-radius: calc(var(--radius-tile) + 0.5rem);
}
.guide-compare figcaption { grid-column: 1 / -1; color: #c9d3d6; font-size: var(--text-small); padding: 0.25rem 0.5rem; }
.guide-list { max-width: var(--measure); padding-left: 1.2rem; }
.guide-list li { margin-bottom: 0.5rem; }

/* Tell a colleague / heads-up ------------------------------------------- */
.noticed-options { border: 0; padding: 0; margin: var(--space-3) 0; display: grid; gap: 0.6rem; }
.noticed-options legend { font-weight: 700; margin-bottom: var(--space-2); }
.noticed-options .looks-like-me { margin-top: 0; }
.tell textarea {
  width: 100%; font: inherit; padding: 0.65rem 0.75rem;
  border: 2px solid var(--color-ink-muted); border-radius: var(--radius-control);
  background: var(--color-surface); color: var(--color-ink);
}
.tell-result { margin-top: var(--space-4); }
.tell-result .button { margin-bottom: var(--space-3); }
.share-button { display: block; margin: var(--space-2) 0; }
.result .share-button { margin-top: var(--space-2); }
.tell-link { word-break: break-all; font-size: 1.05rem; }
.noticed-list { max-width: var(--measure); padding-left: 1.2rem; }
.noticed-list li { margin-bottom: 0.75rem; }
.pointers { border-top: 1px solid var(--color-rule); }
.pointers p { margin-bottom: var(--space-1); }
.invite-list { list-style: none; padding: 0; margin: 0; }
.invite-list li { margin-bottom: var(--space-4); }
.invite-list h3 { font-size: 1.2rem; margin-bottom: 0; }
.invite-list .invite-text { margin: var(--space-2) 0; }
.invite-list .button { margin: 0 0.5rem 0.5rem 0; }

/* Small screens ---------------------------------------------------------- */
@media (max-width: 760px) {
  /* Two header links don't fit beside the wordmark: give them their own row. */
  .site-header { flex-wrap: wrap; row-gap: 0.4rem; }
  .header-links { width: 100%; gap: var(--space-2); font-size: var(--text-small); }
  .hero, .recorder, .device-panel { grid-template-columns: 1fr; }
  .compare { grid-template-columns: 1fr; gap: var(--space-3); }
  /* Keep a small self-view pinned while the examples scroll underneath */
  .compare-self { z-index: 2; width: 46%; margin-left: auto; }
  .report { padding: var(--space-3); }
}

/* Print: just the checklist ---------------------------------------------- */
@media print {
  body { background: #fff; font-size: 12pt; }
  .site-header, .site-footer, .hero, #devices, #audio, #video, .organizers, #print-button, #report > p { display: none !important; }
  main > section { padding: 0; }
  .step { border: 0; }
  .step-number { display: none; }
  .report { border: 0; padding: 0; max-width: none; }
  .checklist li { break-inside: avoid; }
}