:root {
  color-scheme: light;
  --bg: #f4f6f8;
  --card: #ffffff;
  --text: #1a1a1a;
  --muted: #5c6670;
  --border: #d8dee4;
  --accent: #0b4f6c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
  color: var(--accent);
}

.subtitle {
  margin: 0 0 1.5rem;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.card h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.notice {
  background: #fff8e6;
  border-color: #ead89a;
  color: #6b4f00;
}

.error {
  background: #fff4f4;
  border-color: #f0c2c2;
  color: #8a1f1f;
}

.success {
  background: #eefaf1;
  border-color: #b8dfc4;
  color: #1f5c32;
}

.success-prominent {
  padding: 2.5rem 2rem;
  text-align: center;
  border-width: 2px;
}

.success-prominent #status-message {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.4;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
}

.field-label {
  font-weight: 600;
  color: var(--muted);
}

select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  color: var(--text);
  background: #fff;
}

select:focus {
  outline: 2px solid rgba(11, 79, 108, 0.25);
  border-color: var(--accent);
}

.buyer-field-prominent {
  padding: 1rem 1.1rem;
  background: #e8f2f7;
  border: 2px solid var(--accent);
  border-radius: 10px;
}

.buyer-field-prominent label {
  gap: 0.5rem;
}

.buyer-field-prominent .field-label {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
}

.buyer-field-prominent select {
  padding: 0.85rem 0.9rem;
  font-size: 1.05rem;
  font-weight: 600;
  border-width: 2px;
  border-color: var(--accent);
  background: #fff;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

button {
  padding: 0.65rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
  font: inherit;
  cursor: pointer;
}

button:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

button.secondary {
  background: #fff;
  color: var(--accent);
}

button.danger {
  border-color: #b33;
  background: #fff;
  color: #b33;
}

.scan-card {
  text-align: center;
}

.scan-card p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.cart-empty {
  margin: 0;
  padding: 1.25rem;
  text-align: center;
  color: var(--muted);
  background: #f8fafb;
  border: 1px dashed var(--border);
  border-radius: 8px;
}

.cart-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.cart-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem;
  align-items: start;
  padding: 0.85rem 1rem;
  background: #f8fafb;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.cart-item-main {
  display: grid;
  gap: 0.2rem;
  min-width: 0;
}

.cart-item-title {
  font-weight: 600;
  color: var(--text);
}

.cart-item-meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.cart-summary {
  margin: 1rem 0 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
}

.camera-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.65);
}

.camera-modal[hidden] {
  display: none;
}

.camera-panel {
  width: min(100%, 480px);
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.camera-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
}

.camera-header h2 {
  margin: 0;
  font-size: 1rem;
  color: var(--text);
  text-transform: none;
  letter-spacing: normal;
}

.camera-preview-wrap {
  position: relative;
  background: #000;
  aspect-ratio: 4 / 3;
  touch-action: manipulation;
}

#camera-preview {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  cursor: pointer;
}

.camera-hint {
  position: absolute;
  left: 50%;
  bottom: 8px;
  transform: translateX(-50%);
  margin: 0;
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  border-radius: 999px;
  pointer-events: none;
}

.camera-frame {
  position: absolute;
  inset: 12%;
  border: 2px solid rgba(255, 255, 255, 0.85);
  border-radius: 12px;
  pointer-events: none;
}

.camera-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1rem;
}

.camera-footer button {
  flex: 1 1 calc(50% - 0.375rem);
}

.camera-status {
  margin: 0;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}

.camera-status[hidden] {
  display: none;
}

.camera-status.notice {
  background: #fff8e6;
  color: #6b4f00;
}

.camera-status.error {
  background: #fff4f4;
  color: #8a1f1f;
}

.camera-status.success {
  background: #eefaf1;
  color: #1f5c32;
}

#camera-canvas {
  display: none;
}

.file-input-label {
  display: inline-block;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: #fff;
  color: var(--accent);
  font: inherit;
  cursor: pointer;
  text-align: center;
}