:root {
  color-scheme: dark;
  --bg: oklch(0.08 0 0);
  --surface: oklch(0.14 0 0);
  --surface-raised: oklch(0.20 0.008 145);
  --ink: oklch(0.98 0 0);
  --muted: oklch(0.75 0.01 145);
  --primary: oklch(0.65 0.15 145);
  --primary-active: oklch(0.57 0.15 145);
  --focus: oklch(0.82 0.13 145);
  --error: oklch(0.68 0.18 28);
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --z-camera: 0;
  --z-overlay: 10;
  --z-controls: 20;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-kerning: normal;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  width: 100%;
  min-width: 20rem;
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

body {
  min-height: 100svh;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

button,
label {
  font: inherit;
}

button,
.icon-button,
.text-button {
  touch-action: manipulation;
}

button:focus,
.icon-button:focus,
.text-button:focus {
  outline: none;
}

button:focus-visible,
.icon-button:focus-visible,
.text-button:focus-visible {
  outline: 0.1875rem solid var(--focus);
  outline-offset: 0.1875rem;
}

.skip-link {
  position: fixed;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: calc(var(--z-controls) + 1);
  transform: translateY(-180%);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--bg);
  transition: transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.skip-link:focus {
  transform: translateY(0);
}

.app-shell {
  position: relative;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  width: 100%;
  height: 100svh;
  height: 100dvh;
  overflow: hidden;
  background: var(--bg);
}

.camera-stage {
  position: relative;
  min-height: 0;
  overflow: hidden;
  background: oklch(0.11 0 0);
}

#camera,
.photo-canvas,
.detection-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#camera,
.photo-canvas {
  z-index: var(--z-camera);
  object-fit: cover;
}

#camera {
  background: oklch(0.11 0 0);
}

.photo-canvas {
  display: none;
}

.photo-mode .photo-canvas,
.frozen .photo-canvas {
  display: block;
}

.detection-canvas {
  z-index: var(--z-overlay);
  pointer-events: none;
}

.top-bar {
  position: absolute;
  inset: 0 0 auto;
  z-index: var(--z-controls);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: calc(3.75rem + env(safe-area-inset-top));
  padding: calc(var(--space-sm) + env(safe-area-inset-top)) var(--space-md) var(--space-sm);
  background: oklch(0.06 0 0 / 0.86);
}

.brand-lockup,
.privacy-note {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  line-height: 1;
}

.brand-lockup {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 0.25rem);
  gap: 0.1875rem;
  width: 0.6875rem;
}

.brand-mark i {
  width: 0.25rem;
  height: 0.25rem;
  border-radius: 50%;
  background: var(--primary);
}

.privacy-note {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
}

.privacy-note svg,
.primary-button svg,
.icon-button svg {
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.primary-button svg,
.icon-button svg {
  fill: currentColor;
  stroke: none;
}

.aiming-frame {
  position: absolute;
  inset: calc(4rem + env(safe-area-inset-top)) var(--space-md) var(--space-lg);
  z-index: var(--z-overlay);
  pointer-events: none;
  opacity: 0;
  transition: opacity 180ms ease-out;
}

.camera-active .aiming-frame {
  opacity: 1;
}

.aiming-frame i {
  position: absolute;
  width: 2rem;
  height: 2rem;
  border-color: oklch(0.98 0 0 / 0.5);
  border-style: solid;
}

.aiming-frame i:nth-child(1) {
  top: 0;
  left: 0;
  border-width: 0.125rem 0 0 0.125rem;
  border-radius: var(--radius-sm) 0 0;
}

.aiming-frame i:nth-child(2) {
  top: 0;
  right: 0;
  border-width: 0.125rem 0.125rem 0 0;
  border-radius: 0 var(--radius-sm) 0 0;
}

.aiming-frame i:nth-child(3) {
  right: 0;
  bottom: 0;
  border-width: 0 0.125rem 0.125rem 0;
  border-radius: 0 0 var(--radius-sm);
}

.aiming-frame i:nth-child(4) {
  bottom: 0;
  left: 0;
  border-width: 0 0 0.125rem 0.125rem;
  border-radius: 0 0 0 var(--radius-sm);
}

.camera-gate {
  position: absolute;
  inset: 0;
  z-index: var(--z-controls);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: calc(4.5rem + env(safe-area-inset-top)) var(--space-lg) var(--space-xl);
  text-align: center;
  background: var(--bg);
  transition: opacity 180ms ease-out, visibility 180ms;
}

.top-bar {
  z-index: calc(var(--z-controls) + 1);
}

.camera-active .camera-gate {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.gate-copy {
  display: grid;
  gap: var(--space-sm);
  max-width: 22rem;
  margin-bottom: var(--space-sm);
}

.gate-copy h1,
.gate-copy p {
  margin: 0;
}

.gate-copy h1 {
  font-size: 1.5rem;
  line-height: 1.15;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.gate-copy p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.55;
  text-wrap: pretty;
}

.primary-button,
.secondary-button,
.adjuster button {
  min-height: 3rem;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 700;
  transition: background-color 180ms ease-out, color 180ms ease-out, transform 180ms cubic-bezier(0.22, 1, 0.36, 1), opacity 180ms;
}

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  min-width: 12rem;
  padding: var(--space-sm) var(--space-lg);
  background: var(--primary);
  color: oklch(1 0 0);
}

.primary-button:hover {
  background: oklch(0.69 0.15 145);
}

.primary-button:active,
.secondary-button:active,
.adjuster button:active,
.icon-button:active {
  transform: scale(0.97);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.text-button {
  min-height: 2.75rem;
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.5rem;
  text-decoration: underline;
  text-decoration-color: oklch(0.75 0.01 145 / 0.45);
  text-underline-offset: 0.25rem;
}

.score-dock {
  position: relative;
  z-index: var(--z-controls);
  display: grid;
  grid-template-columns: 3.25rem 1fr 3.25rem;
  grid-template-areas:
    "photo score torch"
    "status status status"
    "primary primary primary";
  align-items: center;
  gap: var(--space-sm) var(--space-md);
  padding: var(--space-md) var(--space-md) max(var(--space-md), env(safe-area-inset-bottom));
  background: var(--surface);
}

.secondary-actions {
  display: contents;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.25rem;
  height: 3.25rem;
  border: 0;
  border-radius: 50%;
  cursor: pointer;
  background: var(--surface-raised);
  color: var(--ink);
  transition: background-color 180ms ease-out, transform 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.icon-button:hover {
  background: oklch(0.25 0.01 145);
}

.icon-button[for="photo-input"] {
  grid-area: photo;
}

#torch-button {
  grid-area: torch;
  justify-self: end;
}

.score-readout {
  grid-area: score;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.score-readout output {
  font-size: 5rem;
  font-weight: 750;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  line-height: 0.86;
  letter-spacing: -0.04em;
}

.score-readout > span {
  margin-top: var(--space-xs);
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 700;
}

.status-line {
  grid-area: status;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  min-height: 1.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
}

.status-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--muted);
  transition: background-color 180ms ease-out, transform 180ms ease-out;
}

.status-line[data-state="ready"] .status-dot,
.status-line[data-state="stable"] .status-dot {
  background: var(--primary);
}

.status-line[data-state="stable"] .status-dot {
  transform: scale(1.25);
}

.status-line[data-state="error"] {
  color: var(--error);
}

.status-line[data-state="error"] .status-dot {
  background: var(--error);
}

.freeze-button {
  grid-area: primary;
  width: 100%;
}

.frozen-controls {
  grid-area: primary;
  display: grid;
  gap: var(--space-sm);
}

.frozen-controls[hidden] {
  display: none;
}

.adjuster {
  display: grid;
  grid-template-columns: 3rem 1fr 3rem;
  align-items: center;
  gap: var(--space-xs);
}

.adjuster span {
  color: var(--muted);
  text-align: center;
  font-size: 0.875rem;
  font-weight: 600;
}

.adjuster button {
  min-width: 3rem;
  padding: 0;
  background: var(--surface-raised);
  color: var(--ink);
  font-size: 1.5rem;
}

.secondary-button {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--ink);
  color: var(--bg);
}

.secondary-button:hover {
  background: oklch(0.9 0 0);
}

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

noscript {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-controls) + 2);
  display: grid;
  place-items: center;
  padding: var(--space-lg);
  background: var(--bg);
  color: var(--ink);
  text-align: center;
}

@media (max-height: 42rem) {
  .score-dock {
    gap: var(--space-xs) var(--space-sm);
    padding-top: var(--space-sm);
  }

  .score-readout output {
    font-size: 3.75rem;
  }

  .score-readout > span {
    margin-top: var(--space-2xs);
  }

  .primary-button,
  .secondary-button,
  .adjuster button {
    min-height: 2.75rem;
  }
}

@media (orientation: landscape) and (max-height: 40rem) {
  .app-shell {
    grid-template-columns: minmax(0, 1fr) minmax(17rem, 22rem);
    grid-template-rows: 1fr;
  }

  .camera-stage {
    grid-column: 1;
  }

  .score-dock {
    grid-column: 2;
    align-content: center;
    padding-right: max(var(--space-md), env(safe-area-inset-right));
    padding-bottom: var(--space-md);
  }
}

@media (min-width: 45rem) and (min-height: 45rem) {
  body {
    display: grid;
    place-items: center;
    padding: var(--space-lg);
    background: oklch(0.05 0 0);
  }

  .app-shell {
    width: min(100%, 31rem);
    height: min(56rem, calc(100dvh - 3rem));
    border-radius: 1rem;
    box-shadow: 0 0.5rem 0.5rem oklch(0 0 0 / 0.35);
  }
}

@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;
  }
}