:root {
  color-scheme: light;
  --paper: #f3f6f3;
  --paper-strong: #ffffff;
  --paper-soft: #e7ece7;
  --ink: #151915;
  --ink-soft: #596159;
  --ink-faint: #747d75;
  --rule: #cfd6cf;
  --rule-strong: #aeb8ae;
  --charcoal: #141815;
  --teal: #087f78;
  --mint: #33d2c4;
  --coral: #e65b45;
  --blue: #3479c8;
  --yellow: #e6bd32;
  --max-width: 1320px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  min-width: 320px;
  min-height: 100%;
  overflow-x: hidden;
  background: var(--paper);
}

body {
  min-width: 0;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
}

[hidden] {
  display: none !important;
}

button,
select,
input {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

main {
  width: min(var(--max-width), calc(100% - 36px));
  margin: 0 auto;
  padding: 108px 0 52px;
}

.replay-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 48px;
  align-items: end;
  border-bottom: 1px solid var(--rule-strong);
  padding: 26px 0 28px;
}

.heading-copy,
.round-tools,
.timeline,
.playback-meta,
.phase-copy {
  min-width: 0;
}

.eyebrow,
.phase-index {
  margin: 0;
  color: var(--teal);
  font-size: 10px;
  font-weight: 820;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  margin-top: 9px;
  font-size: 44px;
  line-height: 1.02;
}

.brief {
  max-width: 860px;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.6;
}

.round-context {
  margin: 10px 0 0;
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 700;
}

.round-tools {
  display: grid;
  gap: 8px;
}

.round-picker {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.round-picker > span,
.speed-control legend {
  color: var(--ink-faint);
  font-size: 9px;
  font-weight: 820;
  text-transform: uppercase;
}

.round-picker select {
  min-width: 0;
  width: 100%;
  height: 42px;
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  background: var(--paper-strong);
  padding: 0 10px;
  color: var(--ink);
}

.shuffle-button {
  min-height: 36px;
  border: 1px solid var(--rule);
  border-radius: 4px;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 11px;
  font-weight: 760;
}

.shuffle-button:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.playback {
  position: relative;
  z-index: 20;
  min-height: 76px;
  display: grid;
  grid-template-columns: auto minmax(240px, 1fr) auto;
  gap: 18px;
  align-items: center;
  border-bottom: 1px solid var(--rule);
  background: rgba(243, 246, 243, 0.96);
  padding: 11px 0 9px;
  backdrop-filter: blur(16px);
}

.transport {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(82px, auto));
  gap: 6px;
}

.transport button,
.speed-control button,
.view-tools button,
.reveal-button {
  min-height: 38px;
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  background: var(--paper-strong);
  padding: 7px 11px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 780;
}

.transport button {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.transport button:hover,
.view-tools button:hover,
.speed-control button:hover {
  border-color: var(--teal);
}

.transport button.primary {
  border-color: var(--teal);
  background: var(--teal);
  color: #ffffff;
}

.timeline {
  display: grid;
  gap: 4px;
}

.scrubber {
  min-width: 0;
  display: flex;
  align-items: center;
}

.scrubber input {
  width: 100%;
  margin: 0;
  accent-color: var(--teal);
  cursor: pointer;
}

.timeline-marks {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 720;
  text-transform: uppercase;
}

.timeline-marks span {
  text-align: center;
}

.timeline-marks span:first-child {
  text-align: left;
}

.timeline-marks span:last-child {
  text-align: right;
}

.playback-meta {
  display: grid;
  grid-template-columns: auto 88px;
  gap: 12px;
  align-items: end;
}

.speed-control {
  display: grid;
  grid-template-columns: repeat(3, 42px);
  margin: 0;
  border: 0;
  padding: 0;
}

.speed-control legend {
  margin-bottom: 4px;
  padding: 0;
}

.speed-control button {
  min-height: 28px;
  border-radius: 0;
  padding: 4px 6px;
  color: var(--ink-soft);
  font-size: 10px;
}

.speed-control button:first-of-type {
  border-radius: 4px 0 0 4px;
}

.speed-control button:last-of-type {
  border-radius: 0 4px 4px 0;
}

.speed-control button + button {
  margin-left: -1px;
}

.speed-control button[aria-pressed="true"],
.render-modes button[aria-pressed="true"] {
  position: relative;
  z-index: 1;
  border-color: var(--charcoal);
  background: var(--charcoal);
  color: #ffffff;
}

#progress-status {
  align-self: end;
  padding-bottom: 6px;
  color: var(--ink-soft);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  text-align: right;
  white-space: nowrap;
}

.replay-story {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
}

.phase-copy {
  display: grid;
  grid-template-columns: 86px minmax(150px, auto) minmax(240px, 1fr);
  gap: 18px;
  align-items: baseline;
}

.phase-copy h2 {
  font-size: 18px;
}

.phase-copy > p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.5;
}

.view-tools,
.render-modes {
  display: flex;
  align-items: center;
}

.view-tools {
  flex: none;
  gap: 8px;
}

.render-modes button {
  min-height: 34px;
  border-radius: 0;
}

.render-modes button:first-child {
  border-radius: 4px 0 0 4px;
}

.render-modes button:last-child {
  margin-left: -1px;
  border-radius: 0 4px 4px 0;
}

.view-tools .reset-camera {
  min-height: 34px;
  background: transparent;
}

.build-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding-top: 20px;
}

.build-panel {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--paper-strong);
  box-shadow: 0 18px 52px rgba(22, 30, 24, 0.07);
}

.build-head {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--rule);
  padding: 10px 13px;
}

.build-head > div:first-child {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.build-head h2 {
  font-size: 17px;
  white-space: nowrap;
}

.build-index {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  display: inline-grid;
  place-items: center;
  border-radius: 4px;
  color: #ffffff;
  font-size: 13px;
  font-weight: 900;
}

.index-a {
  background: var(--blue);
}

.index-b {
  background: var(--coral);
}

.build-progress {
  min-width: 0;
  display: grid;
  justify-items: end;
  gap: 2px;
}

.build-phase {
  max-width: 150px;
  overflow: hidden;
  color: var(--teal);
  font-size: 9px;
  font-weight: 800;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.build-count {
  color: var(--ink-soft);
  font-size: 10px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.viewer {
  width: 100%;
  min-height: 340px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #edf1ed;
  touch-action: none;
}

.viewer canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.build-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid var(--rule);
}

.build-facts div {
  min-width: 0;
  padding: 12px;
}

.build-facts div + div {
  border-left: 1px solid var(--rule);
}

.build-facts dt {
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 820;
  text-transform: uppercase;
}

.build-facts dd {
  margin: 5px 0 0;
  overflow: hidden;
  color: var(--ink);
  font-size: 13px;
  font-weight: 780;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.finish-line {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 24px 40px;
  align-items: center;
  margin-top: 24px;
  background: var(--charcoal);
  padding: 28px;
  color: #ffffff;
}

.finish-copy h2 {
  margin-top: 7px;
  font-size: 24px;
}

.finish-copy > p:last-child {
  max-width: 700px;
  margin: 9px 0 0;
  color: #aebbb4;
  font-size: 12px;
  line-height: 1.55;
}

.finish-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.finish-actions a,
.reveal-button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 4px;
  background: transparent;
  padding: 8px 11px;
  color: #e6efea;
  font-size: 11px;
  font-weight: 760;
}

.finish-actions a:hover {
  border-color: rgba(255, 255, 255, 0.5);
  color: #ffffff;
}

.finish-actions .reveal-button {
  border-color: #ffffff;
  background: #ffffff;
  color: var(--charcoal);
}

.builder-reveal {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  padding-top: 20px;
}

.builder-reveal > div {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 20px;
}

.builder-reveal > div + div {
  border-left: 1px solid rgba(255, 255, 255, 0.18);
  padding-left: 20px;
}

.builder-reveal p {
  min-width: 0;
  margin: 0;
}

.builder-reveal strong,
.builder-reveal small {
  display: block;
  overflow-wrap: anywhere;
}

.builder-reveal strong {
  font-size: 15px;
}

.builder-reveal small {
  margin-top: 3px;
  color: #9eada5;
  font-size: 10px;
}

.evidence-panel {
  margin-top: 20px;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
}

.evidence-panel summary {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  cursor: pointer;
  list-style: none;
}

.evidence-panel summary::-webkit-details-marker {
  display: none;
}

.evidence-panel summary > span:first-child {
  display: grid;
  gap: 4px;
}

.evidence-panel summary small {
  color: var(--teal);
  font-size: 9px;
  font-weight: 820;
  text-transform: uppercase;
}

.evidence-panel summary strong {
  font-size: 15px;
}

.summary-action {
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 760;
}

.summary-action::after {
  content: "+";
  display: inline-block;
  margin-left: 8px;
  color: var(--teal);
  font-size: 16px;
}

.evidence-panel[open] .summary-action::after {
  content: "-";
}

.evidence-body {
  border-top: 1px solid var(--rule);
  padding: 24px 0 28px;
}

.evidence-note {
  max-width: 900px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.6;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 36px;
  margin-top: 22px;
}

.evidence-grid article {
  min-width: 0;
}

.evidence-grid h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.evidence-grid h3 .build-index {
  width: 26px;
  height: 26px;
  font-size: 11px;
}

.evidence-grid dl {
  display: grid;
  grid-template-columns: minmax(110px, 0.36fr) minmax(0, 1fr);
  margin: 14px 0 0;
  border-top: 1px solid var(--rule);
}

.evidence-grid dt,
.evidence-grid dd {
  min-width: 0;
  margin: 0;
  border-bottom: 1px solid var(--rule);
  padding: 8px 0;
  font-size: 10px;
  line-height: 1.45;
}

.evidence-grid dt {
  color: var(--ink-faint);
  font-weight: 780;
  text-transform: uppercase;
}

.evidence-grid dd {
  overflow-wrap: anywhere;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.method-link {
  display: inline-flex;
  margin-top: 22px;
  align-items: center;
  gap: 6px;
  color: var(--teal);
  font-size: 11px;
  font-weight: 780;
}

.empty-state {
  margin-top: 32px;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule-strong);
  padding: 34px 0;
}

.empty-state h2 {
  font-size: 24px;
}

.empty-state p:not(.eyebrow) {
  color: var(--ink-soft);
}

.empty-state a {
  display: inline-flex;
  margin-top: 12px;
  border-radius: 4px;
  background: var(--charcoal);
  padding: 9px 12px;
  color: #ffffff;
  font-size: 11px;
  font-weight: 760;
}

@media (max-width: 1080px) {
  .playback {
    grid-template-columns: auto minmax(180px, 1fr);
  }

  .playback-meta {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: end;
  }

  .phase-copy {
    grid-template-columns: 72px minmax(130px, auto) minmax(180px, 1fr);
    gap: 12px;
  }
}

@media (max-width: 860px) {
  .replay-head,
  .build-grid {
    grid-template-columns: 1fr;
  }

  .replay-head {
    gap: 22px;
  }

  .round-tools {
    grid-template-columns: minmax(0, 1fr) 130px;
    align-items: end;
  }

  .replay-story {
    align-items: flex-start;
  }

  .phase-copy {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .view-tools {
    align-self: center;
  }

  .viewer {
    min-height: 360px;
  }

  .finish-line {
    grid-template-columns: 1fr;
  }

  .finish-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 620px) {
  main {
    width: calc(100% - 20px);
    padding-top: 84px;
  }

  .replay-head {
    padding-top: 18px;
  }

  h1 {
    font-size: 34px;
  }

  .brief {
    font-size: 13px;
  }

  .round-tools {
    grid-template-columns: minmax(0, 1fr) 112px;
  }

  .playback {
    grid-template-columns: 1fr;
    gap: 9px;
    padding: 9px 0;
  }

  .transport {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .transport button {
    min-width: 0;
    padding-inline: 6px;
  }

  .playback-meta {
    grid-column: auto;
  }

  .timeline-marks {
    display: flex;
    justify-content: space-between;
  }

  .timeline-marks span:not(:first-child):not(:last-child) {
    display: none;
  }

  .replay-story {
    min-height: 0;
    display: grid;
    gap: 14px;
    padding: 14px 0;
  }

  .view-tools {
    width: 100%;
    justify-content: space-between;
  }

  .viewer {
    min-height: 280px;
  }

  .build-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .build-facts div:nth-child(3) {
    border-top: 1px solid var(--rule);
    border-left: 0;
  }

  .build-facts div:nth-child(4) {
    border-top: 1px solid var(--rule);
  }

  .finish-line {
    margin-right: -10px;
    margin-left: -10px;
    padding: 24px 18px;
  }

  .finish-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .builder-reveal,
  .evidence-grid {
    grid-template-columns: 1fr;
  }

  .builder-reveal {
    gap: 14px;
  }

  .builder-reveal > div {
    padding-right: 0;
  }

  .builder-reveal > div + div {
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    border-left: 0;
    padding-top: 14px;
    padding-left: 0;
  }

  .evidence-grid {
    gap: 28px;
  }

  .summary-action {
    font-size: 0;
  }

  .summary-action::after {
    margin-left: 0;
    font-size: 18px;
  }
}

@media (max-width: 390px) {
  .round-tools {
    grid-template-columns: 1fr;
  }

  .shuffle-button {
    width: 100%;
  }

  .transport button {
    gap: 4px;
    font-size: 10px;
  }

  .speed-control {
    grid-template-columns: repeat(3, 38px);
  }

  .build-head {
    gap: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}