:root {
  color-scheme: light;
  --page: #f5f3ee;
  --surface: #ffffff;
  --surface-soft: #faf9f6;
  --line: #dedbd2;
  --line-strong: #c8c4ba;
  --text: #20201e;
  --muted: #706d66;
  --accent: #3155d9;
  --accent-soft: #e8edff;
  --success: #2f7d5c;
  --success-soft: #e6f4ed;
  --warning: #b94b3d;
  --warning-soft: #fff0ed;
  --key-size: 42px;
  --key-gap: 6px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--page); }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--page);
  color: var(--text);
  font-family: inherit;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select { font: inherit; }

button { color: inherit; }

.page-shell {
  width: min(1440px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 48px;
}

.hero {
  margin-bottom: 24px;
}

.hero-copy {
  max-width: 820px;
}

.hero-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.eyebrow,
.card-label,
.stat-label {
  margin: 0;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1,
h2,
p { margin-top: 0; }

h1 {
  max-width: 20ch;
  margin: 13px 0 10px;
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 650;
  letter-spacing: -.045em;
  line-height: 1.08;
}

.hero-text {
  max-width: 68ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  min-width: 0;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 4px 18px rgba(32, 32, 30, .045);
}

.panel-keyboard { grid-column: 1 / -1; }
.panel-last-event { grid-column: span 4; }
.panel-active { grid-column: span 4; }
.panel-history { grid-column: span 4; }

.panel-head {
  display: flex;
  min-height: 38px;
  margin-bottom: 18px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.panel-head h2 {
  margin: 0;
  font-size: 17px;
  font-weight: 650;
  letter-spacing: -.02em;
}

.panel-head p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.panel-head-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

#clearLogButton,
#resetDetectedButton,
#startInspectionButton,
#resetSessionButton,
#exportJsonButton,
#exportTextButton {
  min-height: 36px;
  padding: 7px 12px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

#clearLogButton:hover,
#resetDetectedButton:hover,
#startInspectionButton:hover,
#resetSessionButton:hover,
#exportJsonButton:hover,
#exportTextButton:hover {
  background: var(--accent-soft);
  border-color: #aebbef;
  color: var(--accent);
}

#clearLogButton,
#startInspectionButton {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

#clearLogButton:hover,
#startInspectionButton:hover {
  background: #2949bd;
  border-color: #2949bd;
  color: #fff;
}

#startInspectionButton.is-running {
  background: var(--success);
  border-color: var(--success);
}

.inspection-meta {
  margin: 0;
  padding: 7px 10px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  white-space: nowrap;
}

.keyboard-layout {
  display: grid;
  min-width: 1180px;
  padding: 18px;
  overflow: hidden;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 12px;
  grid-template-columns: minmax(740px, 1fr) 138px 186px;
  align-items: start;
  gap: 14px;
}

.keyboard-main {
  display: flex;
  min-width: 740px;
  flex-direction: column;
  gap: var(--key-gap);
}

.kb-row {
  display: flex;
  min-width: max-content;
  gap: var(--key-gap);
}

.key-spacer { flex: 0 0 0; }
.key-spacer-050 { flex-basis: calc(var(--key-size) * .5); }

.key {
  position: relative;
  display: inline-flex;
  flex: 0 0 var(--key-size);
  width: var(--key-size);
  height: var(--key-size);
  padding: 5px;
  background: var(--surface);
  border: 1px solid #cecac0;
  border-radius: 7px;
  box-shadow: 0 1px 1px rgba(32, 32, 30, .08);
  align-items: center;
  justify-content: center;
  color: #3f3e3a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  line-height: 1;
  text-align: center;
  cursor: default;
  transition: background-color 80ms ease, border-color 80ms ease, color 80ms ease, transform 80ms ease;
  user-select: none;
}

.key span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.key small { position: absolute; right: 5px; top: 4px; color: #9a978f; font-size: 8px; }

.key-u100 { flex-basis: var(--key-size); width: var(--key-size); }
.key-u150 { flex-basis: calc(var(--key-size) * 1.5 + var(--key-gap) * .5); width: calc(var(--key-size) * 1.5 + var(--key-gap) * .5); }
.key-u175 { flex-basis: calc(var(--key-size) * 1.75 + var(--key-gap) * .75); width: calc(var(--key-size) * 1.75 + var(--key-gap) * .75); }
.key-u200 { flex-basis: calc(var(--key-size) * 2 + var(--key-gap)); width: calc(var(--key-size) * 2 + var(--key-gap)); }
.key-u225 { flex-basis: calc(var(--key-size) * 2.25 + var(--key-gap) * 1.25); width: calc(var(--key-size) * 2.25 + var(--key-gap) * 1.25); }
.key-u275 { flex-basis: calc(var(--key-size) * 2.75 + var(--key-gap) * 1.75); width: calc(var(--key-size) * 2.75 + var(--key-gap) * 1.75); }
.key-u625 { flex: 1 0 calc(var(--key-size) * 6.25); width: auto; }

.key:hover:not(.is-active) { background: #f4f6fd; border-color: #b8c2e8; }

.key.is-tested:not(.is-active):not(.is-repeating) {
  background: var(--success-soft);
  border-color: #aad4c1;
  color: #235f47;
}

.key.is-active {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: none;
  color: #fff;
  transform: translateY(1px);
}

.key.is-active small { color: rgba(255,255,255,.7); }

.key.is-repeating {
  background: var(--warning-soft);
  border-color: #e2a79f;
  color: var(--warning);
}

.key.is-lock-on:not(.is-active):not(.is-repeating) { box-shadow: inset 0 -3px 0 #64a987; }
.key.is-lock-off:not(.is-active):not(.is-repeating) { box-shadow: inset 0 -3px 0 #d8d4cb; }
.key.is-unknown { border-style: dashed; }

.keyboard-side {
  display: grid;
  grid-template-columns: repeat(3, var(--key-size));
  grid-template-rows: repeat(5, var(--key-size));
  gap: var(--key-gap);
}

.keyboard-side .key { width: var(--key-size); }
.nav-up { grid-column: 2; grid-row: 4; }
.nav-left { grid-column: 1; grid-row: 5; }
.nav-down { grid-column: 2; grid-row: 5; }
.nav-right { grid-column: 3; grid-row: 5; }

.keyboard-numpad {
  display: grid;
  grid-template-columns: repeat(4, var(--key-size));
  grid-template-rows: repeat(5, var(--key-size));
  gap: var(--key-gap);
}

.keyboard-numpad .key { width: var(--key-size); height: var(--key-size); }
.numpad-add { grid-column: 4; grid-row: 2 / span 2; height: calc(var(--key-size) * 2 + var(--key-gap)) !important; }
.numpad-enter { grid-column: 4; grid-row: 4 / span 2; height: calc(var(--key-size) * 2 + var(--key-gap)) !important; }
.numpad-0 { grid-column: 1 / span 2; grid-row: 5; width: calc(var(--key-size) * 2 + var(--key-gap)) !important; }
.numpad-decimal { grid-column: 3; grid-row: 5; }

.panel-last-event {
  display: flex;
  min-height: 310px;
  flex-direction: column;
}

.last-key {
  min-height: 72px;
  margin: 24px 0 6px;
  overflow-wrap: anywhere;
  font-size: clamp(30px, 4vw, 52px);
  font-weight: 640;
  letter-spacing: -.05em;
  line-height: 1;
}

.last-key-meta,
.active-hint,
.stat-meta {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.active-hint { margin-top: 8px; }
.hero-stats-wrap { margin-top: auto; padding-top: 20px; }

.stats-grid,
.active-overview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.stats-grid article,
.active-overview-card {
  display: flex;
  min-width: 0;
  min-height: 86px;
  padding: 14px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  flex-direction: column;
  gap: 7px;
}

.stats-grid strong,
.active-overview strong {
  font-size: 23px;
  font-weight: 650;
  letter-spacing: -.03em;
}

#responseSpeedCard.is-fast { border-color: #a9d2bf; background: var(--success-soft); }
#responseSpeedCard.is-slow { border-color: #e5b0a9; background: var(--warning-soft); }

.panel-active .panel-head,
.panel-history .panel-head { margin-bottom: 14px; }

.active-overview { margin-bottom: 12px; }

#nkroCard.is-limited { border-color: #e0b1aa; }
#nkroCard.is-good,
#nkroCard.is-pass { border-color: #a9d2bf; }

.active-list {
  display: flex;
  min-height: 48px;
  padding: 10px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 10px;
  align-content: flex-start;
  flex-wrap: wrap;
  gap: 7px;
}

.active-chip,
.placeholder-chip {
  display: inline-flex;
  min-height: 27px;
  padding: 5px 9px;
  background: var(--accent-soft);
  border-radius: 6px;
  align-items: center;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
}

.placeholder-chip { background: #efede8; color: var(--muted); }

.event-log {
  display: flex;
  max-height: 236px;
  margin: 0;
  padding: 0;
  overflow: auto;
  list-style: none;
  flex-direction: column;
  gap: 7px;
}

.log-entry {
  display: grid;
  padding: 9px 10px;
  background: var(--surface-soft);
  border: 1px solid #e8e5df;
  border-radius: 8px;
  grid-template-columns: 54px minmax(72px, .8fr) minmax(70px, .8fr) 1.25fr;
  align-items: center;
  gap: 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 9px;
}

.log-type { color: var(--accent); font-weight: 700; text-transform: uppercase; }
.log-code { color: var(--text); }
.log-key,
.log-extra { overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.placeholder { padding: 32px 10px; color: var(--muted); font-size: 12px; text-align: center; }

@media (max-width: 1180px) {
  .page-shell { width: min(100% - 28px, 1000px); }
  .panel-last-event,
  .panel-active { grid-column: span 6; }
  .panel-history { grid-column: 1 / -1; }
  .panel-keyboard { overflow-x: auto; }
}

@media (max-width: 760px) {
  .page-shell { width: min(100% - 20px, 620px); padding-top: 24px; }
  h1 { font-size: 30px; }
  .hero-text { font-size: 14px; }
  .panel { padding: 16px; border-radius: 12px; }
  .panel-last-event,
  .panel-active,
  .panel-history { grid-column: 1 / -1; }
  .panel-head,
  .panel-head-actions { align-items: flex-start; flex-direction: column; }
  .panel-head-actions { width: 100%; }
  .inspection-meta { white-space: normal; }
  .stats-grid,
  .active-overview { grid-template-columns: 1fr; }
  .log-entry { grid-template-columns: 50px 1fr; }
  .log-key,
  .log-extra { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}