:root {
  --bg-light: #f3f5f8;
  --bg-dark: #11161d;
  --surface-light: #ffffff;
  --surface-dark: #19212b;
  --surface-alt-light: #e7ecf2;
  --surface-alt-dark: #222c38;
  --text-light: #161b22;
  --text-dark: #e9eef5;
  --muted-light: #4f5d6b;
  --muted-dark: #a6b4c4;
  --border-light: #c8d1dc;
  --border-dark: #344152;
  --accent-light: #0f5cc0;
  --accent-dark: #66b2ff;
  --accent-text-light: #ffffff;
  --accent-text-dark: #07192b;
  --ok-bg-light: #ddf4e4;
  --ok-bg-dark: #123622;
  --ok-fg-light: #0d5e2d;
  --ok-fg-dark: #7de8a5;
  --err-bg-light: #fde7e9;
  --err-bg-dark: #3d161b;
  --err-fg-light: #a61b29;
  --err-fg-dark: #ff99a4;

  --bg: var(--bg-light);
  --surface: var(--surface-light);
  --surface-alt: var(--surface-alt-light);
  --text: var(--text-light);
  --muted: var(--muted-light);
  --border: var(--border-light);
  --accent: var(--accent-light);
  --accent-text: var(--accent-text-light);
  --ok-bg: var(--ok-bg-light);
  --ok-fg: var(--ok-fg-light);
  --err-bg: var(--err-bg-light);
  --err-fg: var(--err-fg-light);

  color-scheme: light dark;
  accent-color: var(--accent);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--bg-dark);
    --surface: var(--surface-dark);
    --surface-alt: var(--surface-alt-dark);
    --text: var(--text-dark);
    --muted: var(--muted-dark);
    --border: var(--border-dark);
    --accent: var(--accent-dark);
    --accent-text: var(--accent-text-dark);
    --ok-bg: var(--ok-bg-dark);
    --ok-fg: var(--ok-fg-dark);
    --err-bg: var(--err-bg-dark);
    --err-fg: var(--err-fg-dark);
  }
}

@supports (color: light-dark(white, black)) {
  :root {
    --bg: light-dark(var(--bg-light), var(--bg-dark));
    --surface: light-dark(var(--surface-light), var(--surface-dark));
    --surface-alt: light-dark(var(--surface-alt-light), var(--surface-alt-dark));
    --text: light-dark(var(--text-light), var(--text-dark));
    --muted: light-dark(var(--muted-light), var(--muted-dark));
    --border: light-dark(var(--border-light), var(--border-dark));
    --accent: light-dark(var(--accent-light), var(--accent-dark));
    --accent-text: light-dark(var(--accent-text-light), var(--accent-text-dark));
    --ok-bg: light-dark(var(--ok-bg-light), var(--ok-bg-dark));
    --ok-fg: light-dark(var(--ok-fg-light), var(--ok-fg-dark));
    --err-bg: light-dark(var(--err-bg-light), var(--err-bg-dark));
    --err-fg: light-dark(var(--err-fg-light), var(--err-fg-dark));
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

.topbar {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.9rem 1.25rem;
}

.topbar-inner {
  max-width: 1280px;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  padding: 0.45rem 0.7rem;
  border-radius: 0.55rem;
  font-weight: 800;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  background-color: var(--accent);
  color: var(--accent-text);
}

h1 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.2;
}

h2 {
  margin: 0;
  font-size: 1.05rem;
}

.subtitle {
  margin: 0.1rem 0 0;
  font-size: 0.875rem;
  color: var(--muted);
}

.status-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.status-badge {
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background-color: var(--surface-alt);
}

.status-badge.status-ok {
  background-color: var(--ok-bg);
  color: var(--ok-fg);
  border-color: transparent;
}

.status-badge.status-error {
  background-color: var(--err-bg);
  color: var(--err-fg);
  border-color: transparent;
}

.workspace {
  max-width: 1280px;
  margin: 1.25rem auto;
  padding-inline: 1.25rem;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(340px, 0.9fr);
  gap: 1.25rem;
  align-items: start;
}

@media (max-width: 960px) {
  .workspace {
    grid-template-columns: 1fr;
  }
}

.panel {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 1.2rem;
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-block-end: 0.9rem;
}

.preset-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-block-end: 0.85rem;
}

button {
  font: inherit;
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary,
.btn-secondary,
.btn-chip {
  min-height: 44px;
  padding: 0.55rem 0.95rem;
  border-radius: 0.55rem;
  font-weight: 600;
  border: 1px solid var(--border);
}

.btn-primary {
  min-height: 48px;
  padding-inline: 1.35rem;
  background-color: var(--accent);
  color: var(--accent-text);
  border-color: transparent;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: wait;
}

.btn-secondary {
  background-color: var(--surface-alt);
  color: var(--text);
}

.btn-compact {
  min-height: 34px;
  padding: 0.25rem 0.65rem;
  font-size: 0.82rem;
}

.btn-chip {
  min-height: 38px;
  padding: 0.35rem 0.75rem;
  font-size: 0.875rem;
  background-color: var(--surface-alt);
  color: var(--text);
}

.mode-fieldset,
.options-fieldset {
  border: 1px solid var(--border);
  border-radius: 0.65rem;
  padding: 0.75rem 1rem 0.6rem;
  margin: 0 0 1rem;
}

.mode-fieldset legend,
.options-fieldset legend {
  padding-inline: 0.45rem;
  font-weight: 700;
  font-size: 0.92rem;
}

.mode-section {
  margin-block-end: 0.85rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.3rem;
  margin-block-end: 0.95rem;
}

.field-group > label,
.label-with-action > label {
  font-weight: 600;
  font-size: 0.95rem;
}

.label-with-action {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

input[type="text"],
input[type="email"],
textarea {
  font: inherit;
  font-size: max(1rem, 1em);
  width: 100%;
  padding: 0.65rem 0.75rem;
  min-height: 48px;
  border-radius: 0.55rem;
  border: 1.5px solid var(--border);
  background-color: var(--bg);
  color: var(--text);
}

textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: max(0.95rem, 1em);
  line-height: 1.45;
  field-sizing: content;
  height: auto;
  width: 100%;
  min-block-size: 12lh;
  max-block-size: 26lh;
  resize: vertical;
}

input:user-invalid,
textarea:user-invalid,
[aria-invalid="true"] {
  border-color: var(--err-fg);
}

.hint {
  margin: 0;
  font-size: 0.84rem;
  color: var(--muted);
}

.field-error {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--err-fg);
}

.template-source-details {
  margin-block: 0.4rem 0.8rem;
  font-size: 0.86rem;
}

.template-source-details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--muted);
}

.template-raw-pre {
  margin: 0.5rem 0 0;
  padding: 0.75rem;
  border-radius: 0.55rem;
  border: 1px solid var(--border);
  background-color: var(--bg);
  font-size: 0.8rem;
  overflow-x: auto;
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

@media (max-width: 640px) {
  .options-grid {
    grid-template-columns: 1fr;
  }
}

.radio-row,
.checks-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
  margin-block: 0.25rem;
}

.group-label {
  font-weight: 600;
  font-size: 0.92rem;
}

.inline-choice {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 44px;
  cursor: pointer;
}

.control-input {
  width: 1.15rem;
  height: 1.15rem;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
}

@supports not (accent-color: #0f5cc0) {
  .control-input {
    position: absolute;
    clip-path: inset(50%);
    overflow: hidden;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    border: 0;
    white-space: nowrap;
  }

  .inline-choice {
    position: relative;
  }

  .control-input + span {
    position: relative;
    padding-inline-start: 1.7rem;
  }

  .control-input + span::before {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1.15rem;
    height: 1.15rem;
    border: 2px solid var(--border);
    background-color: var(--surface);
    border-radius: 0.25rem;
  }

  input[type="radio"].control-input + span::before {
    border-radius: 999px;
  }

  .control-input:focus-visible + span::before {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
  }

  .control-input:checked + span::before {
    background-color: var(--accent);
    border-color: var(--accent);
  }

  .control-input:checked + span::after {
    content: "✓";
    position: absolute;
    inset-inline-start: 0.22rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-text);
    font-size: 0.85rem;
    font-weight: 700;
  }
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem;
}

.form-status {
  font-size: 0.92rem;
  font-weight: 600;
}

.form-status.ok {
  color: var(--ok-fg);
}

.form-status.err {
  color: var(--err-fg);
}

.api-details {
  margin-block-start: 1.1rem;
  border-top: 1px solid var(--border);
  padding-block-start: 0.85rem;
}

.api-details summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.92rem;
}

.curl-box {
  margin-block-start: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.55rem;
  background-color: var(--bg);
  overflow: hidden;
}

.curl-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
}

#curl-preview {
  margin: 0;
  padding: 0.75rem;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.4;
}

.request-log {
  margin: 0.75rem 0 0;
  padding-inline-start: 1.15rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.bytes-pill {
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background-color: var(--surface-alt);
  color: var(--text);
}

.paper-stage {
  display: flex;
  justify-content: center;
  padding: 1rem;
  border-radius: 0.65rem;
  background-color: var(--surface-alt);
  overflow-x: auto;
}

/* Force real thermal paper preview into light color-scheme regardless of page dark mode */
.receipt-paper {
  color-scheme: only light;
  background-color: #fffdf7;
  color: #111111;
  accent-color: #111111;
  width: 100%;
  max-width: 390px;
  padding: 1.25rem 1.05rem;
  border-radius: 0.25rem;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.16);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.38;
}

.receipt-header-img,
.receipt-inline-img {
  display: block;
  max-width: 78%;
  height: auto;
  margin: 0 auto 0.55rem;
}

.receipt-h1 {
  text-align: center;
  font-size: 1.35em;
  font-weight: 800;
  margin: 0.25rem 0;
}

.receipt-h2 {
  font-weight: 800;
  margin: 0.45rem 0 0.1rem;
}

.receipt-h3 {
  font-weight: 800;
  margin: 0.35rem 0 0.1rem;
}

.receipt-rule {
  margin: 0.1rem 0;
  overflow: hidden;
  white-space: nowrap;
  color: #222222;
}

.receipt-line,
.receipt-list-item,
.receipt-kv {
  margin: 0.08rem 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.receipt-kv {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.receipt-quote {
  border-inline-start: 2px solid #222222;
  padding-inline-start: 0.5rem;
  margin: 0.25rem 0;
}

.receipt-code {
  font-size: 0.85em;
  border-inline-start: 2px solid #222222;
  padding-inline-start: 0.5rem;
  margin: 0.3rem 0;
  white-space: pre-wrap;
}

.receipt-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.35rem 0;
  font-size: 0.92em;
}

.receipt-table th,
.receipt-table td {
  padding: 0.15rem 0.2rem;
}

.receipt-table thead tr {
  border-bottom: 1px solid #222222;
}

.receipt-qr-box {
  margin: 0.65rem auto 0.3rem;
  padding: 0.55rem 0.75rem;
  max-width: 220px;
  border: 2px dashed #222222;
  text-align: center;
  font-size: 0.85em;
}

.receipt-qr-title {
  font-weight: 800;
  margin-bottom: 0.2rem;
}

.receipt-timestamp {
  text-align: center;
  font-size: 0.85em;
  margin-top: 0.5rem;
}

.receipt-cut {
  margin-top: 0.85rem;
  padding-top: 0.35rem;
  border-top: 2px dashed #666666;
  text-align: center;
  font-size: 0.78em;
  color: #555555;
}

.span-bold {
  font-weight: 800;
}

.span-underline {
  text-decoration: underline;
}

.span-reverse {
  background-color: #111111;
  color: #fffdf7;
  padding-inline: 0.15rem;
}