/* Components read tokens from app/ui/tokens.css only. No raw colors below this line. */
@font-face {
  font-family: "Roboto";
  font-style: normal;
  font-weight: 700;
  font-stretch: 75%;
  font-display: swap;
  src: url("./assets/fonts/roboto-latin-variable.woff2") format("woff2");
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  width: var(--stage-size);
  height: var(--stage-size);
  overflow: hidden;
  background: var(--color-stage);
  color: var(--color-text);
  font-family: var(--font-family);
  font-weight: 700;
  font-stretch: 75%;
  -webkit-font-smoothing: antialiased;
  user-select: none;
}

button, input { font: inherit; color: inherit; }

/* ---------- Stage: fixed 600×600, nothing scrolls ---------- */
#stage {
  position: relative;
  isolation: isolate;
  width: var(--stage-size);
  height: var(--stage-size);
  overflow: hidden;
  background: var(--color-stage);
}

/* Ambient background: two soft glows, slow drift. steps() caps the animation at 30 FPS
   (22s × 30 = 660 steps) so the compositor does not repaint at 60/120 Hz for no gain. */
#bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
#bg::before, #bg::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  filter: blur(18px);
}
#bg::before { left: -110px; top: 330px; background: radial-gradient(closest-side, var(--color-glow-a), transparent); animation: bg-drift-a 22s steps(660, end) infinite; }
#bg::after { right: -120px; top: -90px; background: radial-gradient(closest-side, var(--color-glow-b), transparent); animation: bg-drift-b 26s steps(780, end) infinite; }
@keyframes bg-drift-a { 0%, 100% { transform: translate3d(0, 0, 0) scale(1); } 50% { transform: translate3d(14px, -10px, 0) scale(1.05); } }
@keyframes bg-drift-b { 0%, 100% { transform: translate3d(0, 0, 0) scale(1); } 50% { transform: translate3d(-12px, 12px, 0) scale(1.04); } }
body[data-app-visibility="hidden"] #bg::before, body[data-app-visibility="hidden"] #bg::after { animation-play-state: paused; }

/* ---------- App root and screen transitions ---------- */
#app {
  position: absolute;
  inset: 0 0 calc(var(--stage-size) - var(--safe-bottom)) 0; /* ends at y=576 */
  z-index: 1;
  display: flex;
  outline: none;
  transition: opacity var(--motion-fast) ease;
}
#app.is-leaving { opacity: 0; }

.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--safe-inset);
  text-align: center;
  animation: screen-settle var(--motion-slow) var(--motion-ease-out);
}
@keyframes screen-settle { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: none; } }

/* ---------- Type ---------- */
.ui-title { font-size: var(--font-size-display); line-height: var(--line-height-tight); letter-spacing: 0; }
h2.ui-title { font-size: var(--font-size-title); }
.eyebrow { font-size: var(--font-size-body); color: var(--color-text-quiet); text-transform: uppercase; letter-spacing: 0.08em; }
.lede { max-width: 440px; font-size: 20px; line-height: var(--line-height-body); color: var(--color-text-muted); }
.footnote { font-size: var(--font-size-caption); color: var(--color-text-quiet); }
.hint { font-size: var(--font-size-body); color: var(--color-text-quiet); }

/* ---------- Buttons ---------- */
.ui-button {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 64px;
  min-width: 160px;
  padding: var(--space-3) var(--space-5);
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--surface-control-top), var(--surface-control-bottom));
  box-shadow: var(--shadow-raised);
  font-size: var(--font-size-control);
  line-height: var(--line-height-tight);
  cursor: pointer;
  outline: none;
  transition: transform var(--motion-fast) var(--motion-ease-spring), background var(--motion-fast) ease, border-color var(--motion-fast) ease, box-shadow var(--motion-fast) ease;
}
.ui-button-detail { font-size: var(--font-size-body); color: var(--color-text-quiet); }
.ui-button--primary { background: linear-gradient(180deg, var(--surface-action-top), var(--surface-action-bottom)); }
.ui-button--danger { background: linear-gradient(180deg, var(--surface-danger-top), var(--surface-danger-bottom)); }
.ui-button[aria-disabled="true"] { opacity: 0.55; }

/* Focus: border + ring + scale, so selection never depends on color alone. */
.focusable.nav-on {
  border-color: var(--focus-border);
  background: linear-gradient(180deg, var(--focus-top), var(--focus-bottom));
  box-shadow: 0 0 0 4px var(--focus-ring), var(--shadow-raised);
  transform: scale(var(--focus-scale));
}
.ui-button--primary.nav-on { background: linear-gradient(180deg, var(--surface-action-top), var(--surface-action-bottom)); }
.ui-button--danger.nav-on { background: linear-gradient(180deg, var(--surface-danger-top), var(--surface-danger-bottom)); }
.ui-button .ui-button-detail { pointer-events: none; }

/* ---------- Menus ---------- */
.ui-menu { display: flex; flex-direction: column; gap: var(--space-3); width: 400px; }
.ui-menu .ui-button { width: 100%; min-height: 72px; }
.ui-menu--settings .ui-button { flex-direction: row; justify-content: space-between; min-height: 64px; }
.ui-button--setting .ui-button-detail { font-size: 20px; color: var(--color-text-muted); }
.ui-button--setting.nav-on .ui-button-detail::before { content: "‹  "; }
.ui-button--setting.nav-on .ui-button-detail::after { content: "  ›"; }

.screen-actions { display: flex; flex-direction: column; gap: var(--space-3); }
.screen-actions--row { flex-direction: row; }

/* ---------- Carousel: one card at a time inside a clipped viewport ----------
   Nothing crosses the display edge: the track slides inside .carousel-viewport,
   which sits within the safe inset. Chevrons say more content exists. */
.carousel-frame { display: flex; align-items: center; gap: var(--space-3); }
.carousel-chevron { width: 32px; font-size: var(--font-size-title); color: var(--color-text-quiet); text-align: center; }
.carousel-chevron[data-active="false"] { opacity: 0.2; }
.carousel-viewport { width: 380px; padding: var(--space-3) 0; overflow: hidden; }
.carousel {
  --card-width: 340px;
  --card-gap: 40px;
  --carousel-index: 0;
  display: flex;
  gap: var(--card-gap);
  padding-left: 20px;
  transform: translateX(calc(var(--carousel-index) * -1 * (var(--card-width) + var(--card-gap))));
  transition: transform var(--motion-base) var(--motion-ease-spring);
}
.ui-button--card {
  flex: 0 0 var(--card-width);
  min-height: 220px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-panel-top), var(--surface-panel-bottom));
  font-size: 28px;
}
.ui-button--card .ui-button-detail { max-width: 280px; font-size: 18px; line-height: var(--line-height-body); }
.carousel-counter { font-size: var(--font-size-body); color: var(--color-text-quiet); }

/* ---------- Detail ---------- */
.detail-image { width: 96px; height: 96px; border-radius: var(--radius-md); }
.detail-image-fallback { font-size: var(--font-size-caption); color: var(--color-text-quiet); }

/* ---------- Composer field ---------- */
.composer-field {
  width: 440px;
  min-height: 72px;
  padding: 0 var(--space-5);
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--surface-field-top), var(--surface-field-bottom));
  font-size: 24px;
  text-align: center;
  outline: none;
}
.composer-field::placeholder { color: var(--color-text-quiet); }
.composer-result { min-height: 28px; font-size: 20px; color: var(--color-text-muted); }

/* ---------- Animation host (Rive or static fallback) ----------
   The fallback mirrors the standard Rive contract: data-rive-state (idle | attention |
   thinking | success | fail | celebrate), data-rive-pulse (react | nudge-<dir>). */
.animation-host { position: relative; width: 200px; height: 200px; display: grid; place-items: center; }
.animation-state { font-size: 20px; color: var(--color-text-muted); }
.rive-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.rive-host[data-rive="available"] .fallback-glyph { display: none; }
.fallback-glyph { width: 160px; height: 160px; transition: transform var(--motion-base) var(--motion-ease-spring); }
.fallback-glyph-body { fill: var(--surface-panel-bottom); stroke: var(--color-accent); stroke-width: 6; transition: stroke var(--motion-base) ease; }
.fallback-glyph-core { fill: var(--color-accent-soft); transform-origin: 50px 50px; transition: transform var(--motion-base) var(--motion-ease-spring), fill var(--motion-base) ease; }
.rive-host:not([data-rive-state]) .fallback-glyph,
.rive-host[data-rive-state="idle"] .fallback-glyph { animation: glyph-breathe 3.2s steps(96, end) infinite; }
.rive-host[data-rive-state="attention"] .fallback-glyph-core { transform: scale(1.25); }
.rive-host[data-rive-state="attention"] .fallback-glyph { animation: glyph-breathe 1.6s steps(48, end) infinite; }
.rive-host[data-rive-state="thinking"] .fallback-glyph-body { stroke-dasharray: 24 12; }
.rive-host[data-rive-state="thinking"] .fallback-glyph { animation: glyph-spin 2.4s steps(72, end) infinite; }
.rive-host[data-rive-state="success"] .fallback-glyph-body { stroke: var(--color-good); }
.rive-host[data-rive-state="success"] .fallback-glyph-core { fill: var(--color-good); transform: scale(1.15); }
.rive-host[data-rive-state="fail"] .fallback-glyph-body { stroke: var(--color-warn); }
.rive-host[data-rive-state="fail"] .fallback-glyph-core { fill: var(--color-warn); transform: scale(0.8); }
.rive-host[data-rive-state="celebrate"] .fallback-glyph-body { stroke: var(--color-accent-soft); }
.rive-host[data-rive-state="celebrate"] .fallback-glyph { animation: glyph-pulse var(--motion-slow) var(--motion-ease-spring) 2; }
.rive-host[data-rive-visible="false"] .fallback-glyph { transform: scale(0.6); opacity: 0; }
.rive-host[data-rive-pulse="react"] .fallback-glyph-core { animation: glyph-pulse var(--motion-slow) var(--motion-ease-spring); }
.rive-host[data-rive-pulse="nudge-up"] .fallback-glyph { animation: nudge-up 320ms ease-out; }
.rive-host[data-rive-pulse="nudge-down"] .fallback-glyph { animation: nudge-down 320ms ease-out; }
.rive-host[data-rive-pulse="nudge-left"] .fallback-glyph { animation: nudge-left 320ms ease-out; }
.rive-host[data-rive-pulse="nudge-right"] .fallback-glyph { animation: nudge-right 320ms ease-out; }
@keyframes glyph-breathe { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.04); } }
@keyframes glyph-spin { to { transform: rotate(360deg); } }
@keyframes glyph-pulse { 0% { transform: scale(1); } 40% { transform: scale(1.12); } 100% { transform: scale(1); } }

/* ---------- GPS test: status, last 10 fixes, control row ---------- */
.screen--gps-test { justify-content: flex-start; gap: var(--space-2); padding: var(--space-5) var(--safe-inset) var(--space-4); }
.gps-header { display: flex; align-items: center; justify-content: space-between; width: 100%; }
.gps-title { font-size: 26px; line-height: var(--line-height-tight); }
.gps-state {
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--surface-panel-top), var(--surface-panel-bottom));
  font-size: 18px;
}
.gps-state[data-state="tracking"] { color: var(--color-good); }
.gps-state[data-state="requesting"] { color: var(--color-warn); }
.gps-state[data-state="denied"], .gps-state[data-state="unsupported"] { color: var(--color-bad); }
.gps-stats, .gps-freshness { width: 100%; font-size: var(--font-size-body); color: var(--color-text-muted); text-align: left; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gps-freshness { color: var(--color-text-quiet); }
.gps-list {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--surface-panel-top), var(--surface-panel-bottom));
  list-style: none;
  font-variant-numeric: tabular-nums;
}
.gps-row { display: grid; grid-template-columns: 52px 1fr 72px 72px 52px; align-items: baseline; height: 25px; font-size: 18px; text-align: left; }
.gps-row:first-child { color: var(--color-accent-soft); }
.gps-row[data-empty="true"] { color: var(--color-text-quiet); }
.gps-cell--index, .gps-cell--flag { font-size: var(--font-size-caption); color: var(--color-text-quiet); }
.gps-cell--accuracy, .gps-cell--gap { text-align: right; color: var(--color-text-muted); }
.gps-cell--flag { text-align: right; }
.gps-diag {
  width: 100%;
  height: 270px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, var(--surface-panel-top), var(--surface-panel-bottom));
  text-align: left;
}
.gps-diag[hidden], .gps-list[hidden] { display: none; }
.gps-diag-line { height: 28px; font-size: var(--font-size-body); line-height: 28px; color: var(--color-text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gps-diag-line:first-child { color: var(--color-warn); }
.gps-diag-line--wrap { height: auto; max-height: 60px; line-height: 20px; font-size: var(--font-size-caption); white-space: normal; overflow: hidden; color: var(--color-text-quiet); }
.gps-controls { display: flex; gap: var(--space-2); width: 100%; margin-top: var(--space-1); }
.gps-controls .ui-button { flex: 1; min-width: 0; min-height: 64px; padding: var(--space-2); font-size: 20px; }
.gps-controls .ui-button-detail { font-size: 18px; color: var(--color-text-muted); }

/* ---------- Feedback: nudge + toast ---------- */
[data-nudge="left"] { animation: nudge-left 320ms ease-out; }
[data-nudge="right"] { animation: nudge-right 320ms ease-out; }
[data-nudge="up"] { animation: nudge-up 320ms ease-out; }
[data-nudge="down"] { animation: nudge-down 320ms ease-out; }
@keyframes nudge-left { 0%, 100% { translate: 0 0; } 24% { translate: calc(var(--motion-nudge-distance) * -1) 0; } 43% { translate: 4px 0; } 62% { translate: -3px 0; } 80% { translate: 1px 0; } }
@keyframes nudge-right { 0%, 100% { translate: 0 0; } 24% { translate: var(--motion-nudge-distance) 0; } 43% { translate: -4px 0; } 62% { translate: 3px 0; } 80% { translate: -1px 0; } }
@keyframes nudge-up { 0%, 100% { translate: 0 0; } 24% { translate: 0 calc(var(--motion-nudge-distance) * -1); } 43% { translate: 0 4px; } 62% { translate: 0 -3px; } 80% { translate: 0 1px; } }
@keyframes nudge-down { 0%, 100% { translate: 0 0; } 24% { translate: 0 var(--motion-nudge-distance); } 43% { translate: 0 -4px; } 62% { translate: 0 3px; } 80% { translate: 0 -1px; } }

.toast {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: calc(var(--stage-size) - var(--safe-bottom) + var(--space-4)); /* stays above y=576 */
  max-width: 480px;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--surface-panel-top), var(--surface-panel-bottom));
  font-size: 18px;
  opacity: 0;
  transform: translate(-50%, 8px);
  transition: opacity var(--motion-base) ease, transform var(--motion-base) var(--motion-ease-out);
  pointer-events: none;
}
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast[data-tone="good"] { color: var(--color-good); }
.toast[data-tone="warn"] { color: var(--color-warn); }

/* ---------- Production FPS meter (passive) ---------- */
.performance-overlay {
  position: absolute; z-index: 9; top: var(--space-3); left: 50%; transform: translateX(-50%);
  display: flex; gap: var(--space-2); padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill); background: var(--surface-panel-bottom);
  font-size: var(--font-size-caption); pointer-events: none;
}

/* ---------- Reduced motion ---------- */
:root[data-motion="reduced"] *, :root[data-motion="reduced"] *::before, :root[data-motion="reduced"] *::after {
  animation-duration: 1ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 1ms !important;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
}