:root {
  color-scheme: light;
  --paper: #f6f7f4;
  --panel: #ffffff;
  --ink: #1d2420;
  --muted: #6b756f;
  --line: #d7ded8;
  --line-strong: #bac6bf;
  --accent: #0f8b8d;
  --accent-strong: #086c6e;
  --accent-soft: #d9f1ef;
  --ok: #2f7d54;
  --ok-soft: #ddf2e6;
  --warn: #ad6f05;
  --warn-soft: #fff1d5;
  --danger: #b13c4a;
  --danger-soft: #fde2e6;
  --shadow: 0 24px 60px rgba(31, 37, 34, 0.12);
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(15, 139, 141, 0.08), rgba(15, 139, 141, 0) 18rem),
    var(--paper);
}

button,
input {
  font: inherit;
}

button {
  -webkit-tap-highlight-color: transparent;
}

svg {
  width: 1.2rem;
  height: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: max(1rem, env(safe-area-inset-top)) 1rem 0.75rem;
}

.topbar h1,
.tool-panel h2,
.settings-dialog h2 {
  margin: 0;
  letter-spacing: 0;
}

.topbar h1 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1;
}

.tool-panel h2,
.settings-dialog h2 {
  font-size: 1.55rem;
  line-height: 1.1;
}

.eyebrow {
  margin: 0 0 0.3rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topbar-actions,
.panel-heading,
.scan-meta,
.dialog-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2.25rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.76);
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
}

.status-pill.ready {
  border-color: rgba(47, 125, 84, 0.24);
  color: var(--ok);
  background: var(--ok-soft);
}

.status-pill.demo {
  border-color: rgba(173, 111, 5, 0.24);
  color: var(--warn);
  background: var(--warn-soft);
}

.app-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 1rem;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1rem;
}

.tool-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 1rem;
  min-height: min(720px, calc(100vh - 8rem));
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.result-panel {
  grid-template-rows: auto minmax(0, 1fr);
}

.capture-frame {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 360px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(15, 139, 141, 0.08), transparent 35%),
    #fbfcfa;
}

.capture-frame.has-preview {
  border-style: solid;
  background: #101513;
}

.capture-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  min-width: 12rem;
  min-height: 3.25rem;
  padding: 0.75rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: #ffffff;
  background: var(--accent);
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

.capture-label:hover,
.primary-button:hover,
.ghost-button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.capture-frame.has-preview .capture-label {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  z-index: 2;
  min-width: auto;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.24);
}

#previewImage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.scan-meta {
  min-height: 3.5rem;
}

.scan-meta p {
  margin: 0;
  color: var(--muted);
  font-weight: 700;
}

.primary-button,
.ghost-button,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 2.85rem;
  border-radius: var(--radius);
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, opacity 160ms ease, background 160ms ease, border-color 160ms ease;
}

.primary-button {
  min-width: 11rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--accent);
  color: #ffffff;
  background: var(--accent);
}

.primary-button:hover {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
}

.ghost-button {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  color: var(--ink);
  background: #ffffff;
}

.icon-button {
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(255, 255, 255, 0.8);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.result-body {
  display: grid;
  min-height: 100%;
}

.empty-state,
.loading-state,
.review-state,
.error-state,
.match-state {
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 1rem;
  min-height: 100%;
  text-align: center;
}

.empty-state svg,
.loading-state svg,
.review-state svg,
.error-state svg {
  width: 4.5rem;
  height: 4.5rem;
  color: var(--accent);
}

.empty-state p,
.loading-state p,
.review-state p,
.error-state p {
  max-width: 28rem;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
  font-weight: 700;
}

.match-state {
  align-content: start;
  justify-items: stretch;
  text-align: left;
}

.guest-line {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.guest-line span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.guest-line strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 1.35rem;
  line-height: 1.2;
}

.code-block {
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  border-radius: var(--radius);
  color: #ffffff;
  background: var(--accent-strong);
}

.code-block span {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.code-digits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(3.2rem, 1fr));
  gap: 0.5rem;
}

.code-digits b {
  display: grid;
  place-items: center;
  min-height: 4.2rem;
  border-radius: 6px;
  color: var(--ink);
  background: #ffffff;
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.detail-item {
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.detail-item span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.detail-item strong {
  display: block;
  margin-top: 0.25rem;
  font-size: 1rem;
}

.state-matched #resultState {
  color: var(--ok);
}

.state-review #resultState,
.state-not_found #resultState {
  color: var(--warn);
}

.state-error #resultState {
  color: var(--danger);
}

.loading-spinner {
  width: 4rem;
  height: 4rem;
  border: 0.35rem solid var(--accent-soft);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 900ms linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.settings-dialog {
  width: min(92vw, 560px);
  padding: 0;
  border: 0;
  border-radius: var(--radius);
  color: var(--ink);
  background: #ffffff;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
}

.settings-dialog::backdrop {
  background: rgba(19, 28, 24, 0.48);
}

.settings-dialog form {
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.dialog-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field span,
.toggle-row span {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.field input {
  width: 100%;
  min-height: 2.9rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--ink);
  background: #fbfcfa;
}

.field input:focus {
  outline: 3px solid var(--accent-soft);
  border-color: var(--accent);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.toggle-row input {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--accent);
}

.settings-lock {
  display: grid;
  gap: 0.75rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfa;
}

.settings-lock p {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.settings-lock .lock-ok {
  color: var(--ok);
}

.settings-lock .lock-error {
  color: var(--danger);
}

.unlock-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.unlock-actions {
  display: flex;
  justify-content: flex-end;
}

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

@media (max-width: 820px) {
  .topbar {
    align-items: flex-start;
  }

  .topbar-actions {
    align-items: flex-end;
    flex-direction: column-reverse;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .tool-panel {
    min-height: auto;
  }

  .capture-frame {
    min-height: 280px;
  }
}

@media (max-width: 560px) {
  .topbar h1 {
    font-size: 1.9rem;
  }

  .panel-heading,
  .scan-meta,
  .dialog-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .primary-button,
  .ghost-button {
    width: 100%;
  }

  .capture-frame {
    width: 100%;
    height: min(58vh, 340px);
    min-height: 280px;
    aspect-ratio: auto;
  }

  .capture-label,
  .capture-frame.has-preview .capture-label {
    right: auto;
    bottom: 0.75rem;
    width: calc(100% - 1.5rem);
    min-width: 0;
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .unlock-grid {
    grid-template-columns: 1fr;
  }
}