:root {
  color-scheme: dark;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #edf4ff;
  background: #080d18;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  --muted: #94a3b8;
  --border: #263247;
  --primary: #41d9b2;
  --primary-dark: #2ac39c;
  --surface: #111a2a;
  --surface-raised: #151f31;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(ellipse at 50% -20%, rgb(37 91 111 / 20%), transparent 55%),
    #080d18;
}

button,
textarea {
  font: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
  padding: 0 max(24px, calc((100% - 1080px) / 2));
  background: rgb(12 19 32 / 92%);
  border-bottom: 1px solid #1e293b;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #edf4ff;
  font-size: 17px;
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 11px;
  color: #07130f;
  background: var(--primary);
  font-size: 13px;
  letter-spacing: -0.5px;
}

.repository-link {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  gap: 7px;
  padding: 0 11px;
  border: 1px solid #263247;
  border-radius: 9px;
  color: #c4d0e1;
  background: #111a2a;
  font-size: 12px;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
  transition: color 150ms, background 150ms, border-color 150ms, transform 150ms;
}

.repository-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.repository-link:hover {
  transform: translateY(-1px);
  border-color: var(--primary);
  color: var(--primary);
  background: #172638;
}

.repository-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.developer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.developer-links-label {
  margin-right: 4px;
  color: #a8b5c9;
  font-size: 13px;
  font-weight: 600;
}

.social-link {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 1px solid #263247;
  border-radius: 9px;
  color: #a8b5c9;
  background: #111a2a;
  transition: color 150ms, background 150ms, border-color 150ms, transform 150ms;
}

.social-link svg {
  width: 17px;
  height: 17px;
  fill: currentColor;
}

.instagram-link svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.instagram-link .instagram-dot {
  fill: currentColor;
  stroke: none;
}

.social-link:hover {
  transform: translateY(-1px);
  border-color: var(--primary);
  color: var(--primary);
  background: #172638;
}

.social-link:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.page {
  width: min(100% - 40px, 840px);
  margin: 0 auto;
  padding: 66px 0 72px;
}

.intro {
  margin-bottom: 28px;
  text-align: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 1.1px;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 12px;
  font-size: clamp(30px, 5vw, 42px);
  letter-spacing: -1.5px;
}

.intro-copy {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.6;
}

.generator-panel {
  padding: 30px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  box-shadow: 0 18px 55px rgb(0 0 0 / 25%);
}

.field-label {
  display: block;
  margin-bottom: 7px;
  font-size: 15px;
  font-weight: 700;
}

.field-help,
.input-meta {
  color: var(--muted);
  font-size: 13px;
}

.count-error {
  color: #ff7b83;
  font-weight: 700;
}

.field-help {
  margin-bottom: 12px;
}

textarea {
  display: block;
  width: 100%;
  min-height: 168px;
  padding: 14px 15px;
  resize: vertical;
  border: 1px solid #334158;
  border-radius: 10px;
  outline: none;
  color: #edf4ff;
  background: #0b1220;
  font-size: 15px;
  line-height: 1.65;
  transition: border-color 150ms, box-shadow 150ms;
}

textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgb(65 217 178 / 16%);
}

textarea::placeholder {
  color: #64748b;
}

.input-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
}

.settings {
  display: grid;
  gap: 16px;
  margin: 26px 0;
  padding: 20px 0;
  border-top: 1px solid #263247;
  border-bottom: 1px solid #263247;
}

.setting-row {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
}

.setting-text {
  display: grid;
  gap: 4px;
}

.setting-title {
  font-size: 14px;
  font-weight: 700;
}

.setting-description {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.switch-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  clip-path: inset(50%);
}

.switch {
  position: relative;
  flex: 0 0 auto;
  width: 42px;
  height: 24px;
  border-radius: 20px;
  background: #3a465a;
  transition: background 150ms;
}

.switch::after {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #e7eef8;
  box-shadow: 0 1px 3px rgb(0 0 0 / 35%);
  content: "";
  transition: transform 150ms;
}

.switch-input:checked + .switch {
  background: var(--primary);
}

.switch-input:checked + .switch::after {
  transform: translateX(18px);
}

.switch-input:focus-visible + .switch {
  outline: 3px solid rgb(65 217 178 / 28%);
  outline-offset: 2px;
}

.form-actions,
.results-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  transition: background 150ms, border-color 150ms, transform 150ms;
}

.button:active {
  transform: translateY(1px);
}

.button-primary {
  color: #07130f;
  background: var(--primary);
}

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

.button-secondary {
  color: #c6d1e2;
  border-color: var(--border);
  background: #172235;
}

.button-secondary:hover {
  background: #202d42;
}

.form-message {
  min-height: 20px;
  margin: 12px 0 0;
  color: #ff7b83;
  font-size: 13px;
}

.form-message:empty {
  min-height: 0;
  margin: 0;
}

.results-section {
  margin-top: 52px;
}

.results-section[hidden] {
  display: none;
}

.results-header {
  justify-content: space-between;
  margin-bottom: 20px;
}

.print-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.results-header .eyebrow {
  margin-bottom: 6px;
}

h2 {
  margin-bottom: 0;
  font-size: 24px;
  letter-spacing: -0.6px;
}

.results-count {
  color: var(--muted);
  font-size: 16px;
  font-weight: 500;
}

.qr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 16px;
}

.qr-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  padding: 18px 14px 16px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface-raised);
  text-align: center;
  break-inside: avoid;
}

.qr-code {
  display: grid;
  width: 160px;
  height: 160px;
  place-items: center;
  margin-bottom: 12px;
  background: #fff;
}

.qr-code img {
  display: block;
  max-width: 100%;
}

.qr-code canvas {
  display: none;
}

.qr-order-number {
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: 15px;
  font-weight: 750;
}

.damaged-badge {
  margin-top: 8px;
  padding: 5px 9px;
  border-radius: 999px;
  color: #ffbd8a;
  background: #47291f;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 22px max(24px, calc((100% - 1080px) / 2));
  border-top: 1px solid #1e293b;
  color: var(--muted);
  background: #0c1320;
  font-size: 12px;
}

@media (max-width: 600px) {
  .site-header {
    min-height: 68px;
    padding: 12px 18px;
    flex-wrap: wrap;
    gap: 10px;
  }

  .header-left,
  .developer-links {
    width: 100%;
  }

  .header-left {
    justify-content: space-between;
  }

  .developer-links {
    justify-content: flex-end;
    gap: 6px;
  }

  .developer-links-label {
    margin-right: 2px;
    font-size: 11px;
  }

  .social-link {
    width: 30px;
    height: 30px;
    border-radius: 8px;
  }

  .social-link svg {
    width: 16px;
    height: 16px;
  }

  .page {
    width: min(100% - 28px, 840px);
    padding: 44px 0 56px;
  }

  .generator-panel {
    padding: 21px 17px;
  }

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

  .results-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .print-actions {
    width: 100%;
  }

  .print-actions .button {
    flex: 1 1 auto;
    padding: 0 12px;
    font-size: 12px;
  }

  .qr-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
  }

  .qr-code {
    width: 140px;
    height: 140px;
  }

  .site-footer {
    flex-direction: column;
    gap: 8px;
    padding: 18px;
  }
}

@media print {
  @page {
    margin: 12mm;
  }

  body {
    min-width: 0;
    color: #000;
    background: #fff;
  }

  .site-header,
  .intro,
  .generator-panel,
  .site-footer,
  .results-header .eyebrow,
  .print-button {
    display: none !important;
  }

  .page {
    width: 100%;
    margin: 0;
    padding: 0;
  }

  .results-section,
  .results-section[hidden] {
    display: block !important;
    margin: 0;
  }

  .results-header {
    margin: 0 0 12mm;
  }

  h2 {
    font-size: 17pt;
  }

  .qr-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6mm;
  }

  .qr-card {
    padding: 5mm 3mm;
    border: 1px solid #bbb;
    border-radius: 0;
    box-shadow: none;
  }

  .qr-code {
    width: 38mm;
    height: 38mm;
    margin-bottom: 3mm;
  }

  .qr-code img,
  .qr-code canvas {
    width: 38mm !important;
    height: 38mm !important;
  }

  .qr-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 55mm);
    justify-content: start;
    align-items: start;
    gap: 8mm;
    width: 100%;
  }

  .qr-card {
    display: flex;
    width: 55mm;
    min-width: 55mm;
    height: 58mm;
    min-height: 58mm;
    align-items: center;
    justify-content: flex-start;
    gap: 2mm;
    padding: 2mm;
    box-sizing: border-box;
    overflow: hidden;
    page-break-inside: avoid;
    break-inside: avoid;
  }

  .qr-code {
    display: block;
    flex: 0 0 38mm;
    width: 38mm;
    height: 38mm;
    margin: 0;
  }

  .qr-code img {
    display: block !important;
    width: 38mm !important;
    height: 38mm !important;
    max-width: none;
    object-fit: contain;
  }

  .qr-code canvas {
    display: none !important;
  }

  .qr-order-number {
    max-width: 100%;
    font-size: 9pt;
    line-height: 1.2;
    overflow-wrap: anywhere;
    text-align: center;
  }

  .damaged-badge {
    margin: 0;
    padding: 1mm 2mm;
    font-size: 7pt;
  }

  body.thermal-print {
    width: 58mm;
    min-width: 0;
    margin: 0;
  }

  .thermal-print .page {
    width: 58mm;
    margin: 0;
    padding: 0;
  }

  .thermal-print .results-header,
  .thermal-print .results-header * {
    display: none !important;
  }

  .thermal-print .results-section,
  .thermal-print .results-section[hidden] {
    display: block !important;
    width: 58mm;
    margin: 0;
    padding: 0;
  }

  .thermal-print .qr-grid {
    display: block !important;
    width: 58mm;
    margin: 0;
    padding: 0;
  }

  .thermal-print .qr-card {
    display: flex;
    width: 58mm;
    min-width: 58mm;
    height: 50mm;
    min-height: 50mm;
    margin: 0;
    padding: 1mm;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1mm;
    overflow: hidden;
    border: 0;
    border-radius: 0;
    background: #fff;
    box-sizing: border-box;
    page-break-inside: avoid;
    break-inside: avoid;
    page-break-after: always;
    break-after: page;
  }

  .thermal-print .qr-card:last-child {
    page-break-after: auto;
    break-after: auto;
  }

  .thermal-print .qr-code {
    display: block;
    width: 34mm;
    height: 34mm;
    flex: 0 0 34mm;
    margin: 0;
    padding: 2mm;
    background: #fff;
    box-sizing: border-box;
  }

  .thermal-print .qr-code img {
    display: block !important;
    width: 30mm !important;
    height: 30mm !important;
    max-width: none;
    object-fit: contain;
  }

  .thermal-print .qr-code canvas {
    display: none !important;
  }

  .thermal-print .qr-order-number {
    max-width: 46mm;
    color: #000;
    font-size: 8pt;
    line-height: 1.1;
    text-align: center;
  }

  .thermal-print .damaged-badge {
    margin: 0;
    padding: 0;
    border-radius: 0;
    color: #000;
    background: #fff;
    font-size: 7pt;
    line-height: 1.1;
  }
}