/* UX Teardowns: one long feed of annotated flows. Palette and type after gosu.team/tanya. */

:root {
  --good: var(--accent);   /* cobalt = working */
  --bad: #e8452c;          /* coral  = not working */
  --rule: var(--border);
  --ink: #1f1b16;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --pop: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Layout ─────────────────────────────── */
.td-progress { height: 3px; flex-shrink: 0; }
.td-progress span { display: block; height: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; }
.td-main { flex: 1; min-height: 0; overflow-y: auto; outline: none; }
.td-wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px 40px; }
.td-error { text-align: center; padding: 80px 16px; color: var(--text-soft); }

.vh { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.mk { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.mk-good { background: var(--good); }
.mk-bad { background: var(--bad); }
mark { background: var(--lime); color: var(--ink); border-radius: 3px; padding: 0 2px; }

/* ── Hero ───────────────────────────────── */
.td-hero {
  position: relative;
  margin: 20px 24px 0;
  border-radius: 20px;
  background-color: var(--accent);
  background-image: radial-gradient(rgb(255 255 255 / 13%) 1px, transparent 1.4px);
  background-size: 22px 22px;
  color: #fff;
  overflow: hidden;
}
.td-hero-inner {
  max-width: 1112px;
  margin: 0 auto;
  padding: 56px 40px 44px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 48px;
  align-items: end;
}
.td-hero-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 450;
  font-size: clamp(38px, 5.4vw, 68px);
  line-height: 1.04;
  letter-spacing: -0.005em;
  font-variation-settings: "opsz" 36;
  max-width: 760px;
}
/* The headline marks up itself, like a teardown note */
.td-hero-mark {
  position: relative;
  display: inline-block;
  padding: 0 0.12em;
  font-style: italic;
  color: var(--lime);
}
.td-hero-mark::before {
  content: "";
  position: absolute;
  inset: 0.08em -0.02em -0.02em;
  border: 3px solid var(--lime);
  border-radius: 10px;
  animation: hero-draw 1s var(--ease) 0.35s both;
}
.td-hero-pin {
  position: absolute;
  left: -0.32em;
  top: -0.18em;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--lime);
  color: var(--accent);
  border: 3px solid var(--accent);
  font: 700 14px/1 var(--sans);
  font-style: normal;
  animation: hero-pin 0.5s var(--pop) 1.05s both;
}
@keyframes hero-draw { from { clip-path: inset(0 100% 100% 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes hero-pin { from { transform: scale(0); } to { transform: scale(1); } }


.td-hero-stats { display: grid; grid-template-columns: repeat(2, auto); gap: 22px 40px; margin: 0; }
.td-hero-stats dt {
  font-family: var(--serif);
  font-size: 52px;
  font-weight: 450;
  line-height: 1;
  color: var(--lime);
  font-variation-settings: "opsz" 36;
}
.td-hero-stats dd { margin: 6px 0 0; font-size: 14px; color: rgb(255 255 255 / 75%); }
.td-hero-stats .mk-good { background: #fff; }
.td-hero-stats .mk-bad { background: var(--bad); box-shadow: 0 0 0 1.5px #fff; }

/* ── Sticky filter bar ──────────────────── */
.td-bar {
  position: sticky;
  top: 0;
  z-index: 15;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
  margin-top: 8px;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}
.td-tagbar {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}
.td-group { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; }
.td-group-label { min-width: 48px; margin-right: 4px; font-size: 12px; font-weight: 600; color: var(--text-faint); }
.td-tagbtn {
  flex-shrink: 0;
  padding: 6px 11px;
  border: 0;
  border-radius: 8px;
  background: var(--sand);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.td-tagbtn span { color: var(--text-faint); margin-left: 2px; }
.td-tagbtn:hover:not(:disabled) { background: var(--accent-soft); color: var(--accent); }
.td-tagbtn[aria-pressed="true"] { background: var(--accent); color: #fff; }
.td-tagbtn[aria-pressed="true"] span { color: var(--lime); }
.td-tagbtn:disabled { opacity: 0.45; cursor: not-allowed; }

.td-tagbtn[aria-checked="true"] { background: var(--accent); color: #fff; }
.td-tagbtn .mk { margin: 0 6px 0 0; vertical-align: 1px; }
.td-tagbtn[aria-checked="true"] .mk-good { background: #fff; }
.td-bar .searchbox { flex-shrink: 0; align-self: flex-start; }

.td-empty { padding: 56px 0; color: var(--text-soft); }
.td-empty p { margin: 0 0 8px; }
.td-linkbtn { padding: 0; border: 0; background: none; font: inherit; color: var(--link); text-decoration: underline; cursor: pointer; }

/* ── Case ───────────────────────────────── */
.td-case { padding-top: 56px; }
.td-case + .td-case { margin-top: 72px; border-top: 2px solid var(--ink); }
.td-case-head { max-width: 760px; margin-bottom: 36px; }
.td-case-company { margin: 0 0 8px; font-size: 15px; font-weight: 600; color: var(--accent); }
.td-case-company a { color: inherit; text-decoration: none; }
.td-case-company a:hover { text-decoration: underline; text-underline-offset: 3px; }
.td-case-company a span { font-size: 0.85em; }
.td-case-title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 450;
  font-size: clamp(32px, 4.4vw, 50px);
  line-height: 1.06;
  letter-spacing: -0.005em;
  font-variation-settings: "opsz" 36;
}
.td-case-summary { margin: 0 0 16px; font-size: 18px; line-height: 1.55; }
.td-case-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin: 0; }
.td-chip {
  padding: 4px 10px;
  border: 0;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.td-chip:hover { background: var(--accent); color: #fff; }
.td-chip-seg { background: var(--lime); color: var(--ink); }
.td-chip-seg:hover { background: var(--ink); color: var(--lime); }
.td-case-stats { margin-left: 6px; font-size: 13px; color: var(--text-soft); }

/* ── Step ───────────────────────────────── */
.td-step { margin-bottom: 64px; }
.td-step-head { display: flex; gap: 16px; align-items: baseline; max-width: 780px; margin-bottom: 20px; }
.td-step-num {
  font-family: var(--serif);
  font-variation-settings: "opsz" 36;
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.td-step-head h3 {
  margin: 0 0 4px;
  font-family: var(--serif);
  font-variation-settings: "opsz" 36;
  font-weight: 450;
  font-size: 27px;
  letter-spacing: -0.005em;
}
.td-step-head p { margin: 0; font-size: 15.5px; line-height: 1.55; color: var(--text-soft); }

.td-step-body { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: 32px; align-items: start; }

.td-shot { margin: 0; position: sticky; top: 84px; }
.td-shot-inner {
  position: relative;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--card);
  box-shadow: 0 1px 0 rgb(31 27 22 / 4%), 0 12px 32px -18px rgb(31 27 22 / 22%);
}
.td-shot-inner img { display: block; width: 100%; height: auto; border-radius: 9px; }
/* Phone screenshots: keep them phone-sized instead of stretching to the column. */
.td-shot--phone .td-shot-inner { max-width: 360px; margin: 0 auto; }

/* Highlight boxes */
.hl {
  position: absolute;
  z-index: 1;
  border-radius: 6px;
  border: 2.5px solid var(--hl);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s, background 0.2s, box-shadow 0.2s;
}
.hl-good { --hl: var(--good); }
.hl-bad { --hl: var(--bad); border-style: dashed; }
.td-shot.in .hl { opacity: 1; animation: hl-draw 0.6s var(--ease) calc(250ms + var(--i) * 110ms) both; }
.hl.is-hot { background: color-mix(in srgb, var(--hl) 14%, transparent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--hl) 20%, transparent); }
.td-shot.in .hl.is-dim { opacity: 0; }
.td-shot.in .td-shot-inner:has(.is-hot) .hl:not(.is-hot):not(.is-dim) { opacity: 0.2; }
@keyframes hl-draw { from { clip-path: inset(0 100% 100% 0); } to { clip-path: inset(0 0 0 0); } }

/* Pins */
.pin {
  position: absolute;
  z-index: 2;
  width: 26px;
  height: 26px;
  margin: -13px 0 0 -13px;
  padding: 0;
  border: 2px solid #fff;
  border-radius: 50%;
  background: var(--pin);
  color: #fff;
  font: 700 12px/1 var(--sans);
  cursor: pointer;
  box-shadow: 0 2px 6px rgb(31 27 22 / 30%);
  transform: scale(0);
  transition: transform 0.2s var(--ease), opacity 0.2s;
}
.pin-good { --pin: var(--good); }
.pin-good .pin-num { color: var(--lime); }
.pin-bad { --pin: var(--bad); }
.td-shot.in .pin { animation: pin-in 0.45s var(--pop) calc(250ms + var(--i) * 110ms) both; }
.td-shot.in .pin.is-hot, .pin:focus-visible { animation: none; transform: scale(1.2); z-index: 5; outline: none; }
.pin.is-dim { opacity: 0.15; pointer-events: none; }
@keyframes pin-in { from { transform: scale(0); } to { transform: scale(1); } }

.pin-tip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 10px);
  width: max-content;
  max-width: 230px;
  padding: 8px 11px;
  border-radius: 8px;
  background: var(--ink);
  color: rgb(255 255 255 / 70%);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.4;
  text-align: left;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%);
  transition: opacity 0.15s;
}
.pin-tip b { display: block; color: #fff; font-weight: 600; }
.pin.is-hot .pin-tip, .pin:focus-visible .pin-tip { opacity: 1; }
.pin.tip-below .pin-tip { bottom: auto; top: calc(100% + 10px); }
.pin.tip-left .pin-tip { left: auto; right: -6px; transform: none; }
.pin.tip-right .pin-tip { left: -6px; transform: none; }

/* Notes */
.td-notes { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.note {
  display: flex;
  gap: 12px;
  padding: 14px 10px 14px 6px;
  border-bottom: 1px solid var(--rule);
  cursor: pointer;
  outline: none;
  transition: background 0.15s, opacity 0.2s;
}
.note-good { --c: var(--good); }
.note-bad { --c: var(--bad); }
.note.is-hot, .note:focus-visible { background: color-mix(in srgb, var(--c) 7%, var(--bg)); }
.note.is-dim { opacity: 0.3; }
.note.is-match { box-shadow: inset 4px 0 0 var(--lime); }
.note-num {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-top: 1px;
  border-radius: 50%;
  background: var(--c);
  color: var(--lime);
  font-size: 11px;
  font-weight: 700;
}
.note-bad .note-num { background: transparent; color: var(--bad); box-shadow: inset 0 0 0 2px var(--bad); }
.note-title { margin: 0 0 3px; font-size: 15px; font-weight: 600; line-height: 1.35; }
.note-text { margin: 0 0 6px; font-size: 14px; line-height: 1.5; color: var(--text-soft); }
.note-principle { margin: 0; font-size: 12px; font-weight: 500; color: var(--c); }
.note-principle a { color: inherit; text-decoration: underline; text-decoration-color: color-mix(in srgb, var(--c) 35%, transparent); text-underline-offset: 3px; }
.note-principle a:hover { text-decoration-color: currentColor; }

.is-flash { animation: note-flash 0.8s ease-out; }
.pin.is-flash { animation: pin-flash 0.6s var(--ease) !important; }
@keyframes note-flash { from { background: color-mix(in srgb, var(--lime) 55%, transparent); } to { background: transparent; } }
@keyframes pin-flash { 0%, 100% { transform: scale(1); } 40% { transform: scale(1.45); } }

/* ── Takeaways ──────────────────────────── */
.td-takeaways {
  max-width: 780px;
  padding: 28px 32px 30px;
  border-radius: 16px;
  background: var(--accent);
  color: #fff;
}
.td-takeaways h3 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-variation-settings: "opsz" 36;
  font-weight: 450;
  font-size: 26px;
  letter-spacing: -0.005em;
  color: var(--lime);
}
.td-takeaways ol { margin: 0; padding-left: 22px; display: grid; gap: 10px; }
.td-takeaways li { font-size: 16px; line-height: 1.55; color: rgb(255 255 255 / 90%); }
.td-takeaways li::marker { font-family: var(--serif); font-weight: 600; color: var(--lime); }

/* ── Footer ─────────────────────────────── */
.td-footer {
  max-width: 1160px;
  margin: 48px auto 0;
  padding: 24px 24px 32px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px 24px;
  border-top: 2px solid var(--ink);
  font-size: 15px;
}
.td-footer p { margin: 0; }
.td-footer a { color: var(--accent); font-weight: 600; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.td-footer-links { list-style: none; margin: 0; padding: 0; display: flex; gap: 20px; }
.td-footer-links a { text-decoration: none; }
.td-footer-links a:hover { text-decoration: underline; }

/* ── Reveal ─────────────────────────────── */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.55s var(--ease) var(--delay, 0ms), transform 0.55s var(--ease) var(--delay, 0ms); }
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .pin { transform: none; }
  .hl { opacity: 1; }
  .td-hero-mark::before, .td-hero-pin, .td-shot.in .pin, .td-shot.in .hl, .is-flash, .pin.is-flash { animation: none !important; }
}

/* Hide the browser's own clear button; the custom one handles it */
#td-search::-webkit-search-cancel-button { -webkit-appearance: none; display: none; }

/* ── Responsive ─────────────────────────── */
@media (max-width: 960px) {
  .td-hero-inner { grid-template-columns: 1fr; gap: 32px; padding: 44px 32px 36px; }
  .td-hero-stats { grid-template-columns: repeat(4, auto); justify-content: start; gap: 16px 32px; }
  .td-step-body { grid-template-columns: 1fr; gap: 20px; }
  .td-shot { position: relative; top: 0; }
  .pin { width: 21px; height: 21px; margin: -10.5px 0 0 -10.5px; font-size: 10px; border-width: 1.5px; }
  .pin-tip { display: none; }
}
@media (max-width: 860px) {
  .td-bar { flex-direction: column; align-items: stretch; gap: 12px; }
  .td-bar .searchbox { order: -1; align-self: stretch; }
  .td-bar .searchbox input { width: 100%; max-width: none; }
}
@media (max-width: 600px) {
  .td-hero { margin: 12px 12px 0; border-radius: 16px; }
  .td-hero-inner { padding: 32px 20px 26px; }
  .td-hero-stats { grid-template-columns: repeat(2, auto); }
  .td-hero-stats dt { font-size: 40px; }
  .td-hero-pin { width: 24px; height: 24px; font-size: 12px; border-width: 2px; }
  .td-wrap { padding: 0 16px 32px; }
  .td-takeaways { padding: 22px 20px; }
  .td-footer { padding: 20px 16px 28px; }
}