:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --panel: #ffffff;
  --text: #17202a;
  --muted: #5f6b78;
  --line: #d9dee5;
  --accent: #0b6bcb;
  --accent-dark: #084f95;
  --danger: #b42318;
  --danger-bg: #fff1f0;
  --warn-bg: #fff7dd;
  --warn-line: #e8bd4b;
  --notice-bg: #edf7f2;
  --notice-line: #75b798;
  --shadow: 0 18px 48px rgba(21, 32, 43, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input,
textarea {
  font: inherit;
}

button {
  min-height: 42px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  padding: 0 14px;
  font-weight: 650;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button.secondary,
.file-button {
  border-color: var(--line);
  background: #fff;
  color: var(--text);
}

button.secondary:hover,
.file-button:hover {
  border-color: #aeb8c4;
  background: #f4f6f8;
}

button.danger {
  border-color: var(--danger);
  background: var(--danger);
}

.link-button {
  min-height: auto;
  border: 0;
  background: transparent;
  color: var(--accent);
  padding: 0;
  text-decoration: underline;
}

.link-button:hover {
  background: transparent;
  color: var(--accent-dark);
}

.app-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding: 28px clamp(18px, 4vw, 56px) 18px;
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.1;
}

.app-header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.version,
.origin,
.phase-badge {
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 22px;
  padding: 0 clamp(18px, 4vw, 56px) 42px;
}

body[data-view="create"] .recover-panel,
body[data-view="recover"] .create-panel {
  display: none;
}

body[data-view="create"] .workspace,
body[data-view="recover"] .workspace {
  grid-template-columns: minmax(0, 860px);
  justify-content: center;
}

.panel {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: clamp(18px, 3vw, 28px);
}

.panel-heading,
.protected-toolbar,
.code-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.panel h2 {
  margin: 0;
  font-size: 1.25rem;
}

.mode-picker {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  border: 0;
  padding: 0;
  margin: 20px 0 14px;
}

.mode-picker legend {
  grid-column: 1 / -1;
  color: var(--muted);
  font-weight: 700;
}

.mode-picker label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 10px;
  background: #fbfcfd;
}

.disabled-choice {
  color: var(--muted);
}

.field {
  display: grid;
  gap: 7px;
  margin-top: 14px;
}

.field span {
  color: var(--muted);
  font-weight: 700;
}

textarea,
input[type="password"],
input[type="text"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  padding: 10px 11px;
}

textarea {
  resize: vertical;
  min-height: 120px;
}

textarea:focus,
input:focus,
button:focus-visible,
.file-button:focus-within {
  outline: 3px solid rgba(11, 107, 203, 0.22);
  outline-offset: 2px;
}

.field-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 14px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
}

.actions.wrap {
  flex-wrap: wrap;
}

.warning,
.notice,
.error,
.mode-summary,
.hint {
  margin-top: 14px;
}

.warning,
.notice,
.error,
.mode-summary {
  border-radius: 6px;
  padding: 10px 12px;
}

.warning {
  border: 1px solid var(--warn-line);
  background: var(--warn-bg);
}

.notice {
  border: 1px solid var(--notice-line);
  background: var(--notice-bg);
}

.error {
  min-height: 0;
  color: var(--danger);
}

.error:not(:empty) {
  border: 1px solid #f1a7a0;
  background: var(--danger-bg);
}

.mode-summary,
.hint {
  color: var(--muted);
}

.mode-summary {
  border: 1px solid var(--line);
  background: #fbfcfd;
}

.output-area,
.protected-area,
.scanner {
  margin-top: 20px;
}

.code-sheet {
  margin-top: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: #fff;
}

#qr-canvas,
#protected-canvas {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

#qr-canvas {
  max-width: 520px;
  aspect-ratio: 1;
  height: auto;
  margin: 14px auto 0;
}

#protected-canvas {
  height: auto;
  margin-top: 10px;
}

.payload-fallback {
  overflow-wrap: anywhere;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.78rem;
}

.fallback-label {
  margin-top: 14px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.scan-video {
  width: 100%;
  max-height: 280px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #101820;
}

.file-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 6px;
  padding: 0 14px;
  font-weight: 650;
  cursor: pointer;
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.hidden {
  display: none !important;
}

@media (max-width: 980px) {
  .workspace {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .app-header {
    display: block;
  }

  .version {
    margin-top: 10px;
  }

  .mode-picker,
  .field-grid {
    grid-template-columns: 1fr;
  }

  .actions {
    align-items: stretch;
    flex-direction: column;
  }

  .actions button,
  .file-button {
    width: 100%;
  }
}

@media print {
  body {
    background: #fff;
  }

  .app-header,
  .recover-panel,
  .create-panel > :not(.output-area),
  .output-area > :not(.code-sheet) {
    display: none !important;
  }

  .workspace,
  .panel,
  .code-sheet {
    display: block;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  #qr-canvas {
    width: 85mm;
    height: 85mm;
  }
}