:root {
  --primary: #111111;
  --primary-active: #242424;
  --ink: #111111;
  --body: #374151;
  --muted: #6b7280;
  --muted-soft: #898989;
  --hairline: #e5e7eb;
  --hairline-soft: #f3f4f6;
  --canvas: #ffffff;
  --surface-soft: #f8f9fa;
  --surface-card: #f5f5f5;
  --surface-dark: #101010;
  --on-primary: #ffffff;
  --on-dark-soft: #a1a1aa;
  --accent: #3b82f6;
  --success: #10b981;
  --warning: #f59e0b;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.05), 0 16px 40px rgba(0, 0, 0, 0.08);
  --qr-size: 192px;
  --print-width: 148mm;
  --print-height: 210mm;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  margin: 0;
  background: var(--canvas);
  color: var(--body);
  font-family: Pretendard, Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

main {
  flex: 1;
}

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 700;
}

.top-brand {
  margin: 20px 0 0 40px;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border: 7px solid var(--ink);
  border-radius: 7px;
  box-shadow: inset 0 0 0 4px var(--canvas);
}

.toilet-page .brand-mark {
  width: 28px;
  height: 28px;
  border: 0;
  border-radius: 8px;
  background:
    linear-gradient(var(--ink) 0 0) 8px 8px / 3px 3px no-repeat,
    linear-gradient(var(--ink) 0 0) 19px 8px / 3px 3px no-repeat,
    linear-gradient(var(--ink) 0 0) 8px 19px / 3px 3px no-repeat,
    linear-gradient(var(--canvas) 0 0) 5px 5px / 9px 9px no-repeat,
    linear-gradient(var(--canvas) 0 0) 16px 5px / 9px 9px no-repeat,
    linear-gradient(var(--canvas) 0 0) 5px 16px / 9px 9px no-repeat,
    linear-gradient(var(--canvas) 0 0) 17px 17px / 3px 3px no-repeat,
    linear-gradient(var(--canvas) 0 0) 22px 22px / 3px 3px no-repeat,
    var(--ink);
  box-shadow: none;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
}

.primary-button {
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--on-primary);
  gap: 8px;
  padding: 0 20px;
}

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

.primary-button:disabled {
  cursor: wait;
  opacity: 0.86;
}

.button-spinner {
  display: none;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-top-color: var(--on-primary);
  border-radius: 50%;
  animation: button-spin 0.7s linear infinite;
}

.primary-button.is-loading .button-spinner {
  display: inline-block;
}

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

.secondary-button {
  border: 1px solid var(--hairline);
  background: var(--canvas);
  color: var(--ink);
  padding: 0 16px;
}

.secondary-button:hover {
  border-color: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  column-gap: 48px;
  row-gap: 28px;
  align-items: start;
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  padding: 88px 0 48px;
}

.hero-copy {
  grid-column: 1;
  grid-row: 1;
  min-width: 0;
  padding-top: 28px;
}

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

h1,
h2 {
  color: var(--ink);
  font-weight: 700;
  letter-spacing: 0;
}

h1 {
  max-width: 720px;
  margin-bottom: 22px;
  font-size: clamp(38px, 7vw, 64px);
  line-height: 1.06;
}

.nowrap {
  white-space: nowrap;
}

.hero-copy > p:not(.domain-line) {
  max-width: 620px;
  margin-bottom: 28px;
  color: var(--body);
  font-size: 18px;
  line-height: 1.65;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.trust-row span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  background: var(--surface-card);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.tool-card {
  grid-column: 2;
  grid-row: 1 / span 2;
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  background: var(--canvas);
  box-shadow: var(--shadow-soft);
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
  border-radius: 24px;
  background: var(--surface-soft);
}

.mode-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 46px;
  border: 0;
  border-radius: var(--radius-lg);
  background: transparent;
  color: var(--muted);
  padding: 0 10px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  word-break: keep-all;
  cursor: pointer;
}

.mode-tab.is-active {
  background: var(--canvas);
  color: var(--ink);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
}

.qr-form {
  display: grid;
  gap: 14px;
  padding: 24px 0;
  border-bottom: 1px solid var(--hairline-soft);
}

.field-stack {
  display: grid;
  gap: 12px;
}

.field-row {
  display: grid;
  gap: 8px;
}

.field-row[hidden] {
  display: none;
}

.restroom-password-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.restroom-password-grid[hidden] {
  display: none;
}

.field-row label,
.checkbox-field {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.field-row input,
.field-row select,
.field-row textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--canvas);
  color: var(--ink);
  padding: 10px 14px;
  outline: none;
}

.field-row textarea {
  min-height: 104px;
  resize: vertical;
}

.field-row input:focus,
.field-row select:focus,
.field-row textarea:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.08);
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox-field input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.form-help {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.size-control {
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.size-control[hidden] {
  display: none;
}

.size-control label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.size-control strong {
  color: var(--muted);
  font-size: 13px;
}

.size-control input {
  width: 100%;
  accent-color: var(--primary);
}

.design-options {
  display: grid;
  gap: 10px;
  border: 0;
  padding: 0;
  margin: 0;
}

.design-options legend {
  margin-bottom: 2px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.design-option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.design-option {
  display: grid;
  gap: 6px;
  min-height: 76px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--canvas);
  padding: 12px;
  color: var(--body);
  cursor: pointer;
}

.design-option:has(input:checked) {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.08);
}

.design-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.design-option strong {
  color: var(--ink);
  font-size: 14px;
}

.design-option span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.preview-panel {
  display: grid;
  grid-template-columns: minmax(232px, max-content) minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  padding-top: 24px;
}

.preview-panel.has-review-result {
  grid-template-columns: 1fr;
  align-items: start;
}

.qr-frame {
  display: grid;
  place-items: center;
  width: calc(var(--qr-size) + 64px);
  height: calc(var(--qr-size) + 64px);
  min-width: 232px;
  min-height: 232px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(90deg, var(--hairline-soft) 1px, transparent 1px),
    linear-gradient(var(--hairline-soft) 1px, transparent 1px),
    var(--canvas);
  background-size: 16px 16px;
}

.qr-frame.has-review-result,
.qr-frame.has-banner-result {
  width: 100%;
  max-width: 100%;
  height: auto;
  min-width: 0;
  min-height: 0;
  border: 0;
  background: transparent;
}

.qr-frame.has-review-result .qr-output-stack,
.qr-frame.has-banner-result .qr-output-stack {
  width: min(100%, 360px);
}

.qr-output-stack {
  display: grid;
  place-items: center;
  gap: 8px;
}

#qrCode {
  display: grid;
  place-items: center;
  width: var(--qr-size);
  height: var(--qr-size);
  padding: 0;
  border-radius: var(--radius-md);
  background: var(--canvas);
}

#qrCode.is-empty {
  color: var(--muted);
  text-align: center;
  font-size: 13px;
  font-weight: 700;
}

#qrCode canvas,
#qrCode img {
  width: 100% !important;
  height: 100% !important;
}

#qrCode.has-review-result,
#qrCode.has-banner-result {
  width: 100%;
  height: auto;
  padding: 0;
  background: transparent;
}

#qrCode.has-review-result img,
#qrCode.has-banner-result img {
  width: 100% !important;
  height: auto !important;
}

.qr-domain {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
}

.qr-frame.has-review-result .qr-domain,
.qr-frame.has-banner-result .qr-domain {
  display: none;
}

.review-result,
.banner-result {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.16);
}

.preview-copy h2 {
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.25;
}

#payloadPreview {
  overflow-wrap: anywhere;
  margin-bottom: 16px;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.45;
}

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

.status-message {
  min-height: 20px;
  margin: 12px 0 0;
  color: var(--success);
  font-size: 13px;
  font-weight: 700;
}

.status-message.is-error {
  color: #ef4444;
}

.ad-slot {
  display: grid;
  gap: 6px;
  min-height: 96px;
  padding: 18px 22px;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
  color: var(--muted);
}

.ad-slot[hidden] {
  display: none;
}

.ad-slot span {
  width: fit-content;
  border-radius: 999px;
  background: var(--canvas);
  color: var(--muted);
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
}

.ad-slot strong {
  color: var(--ink);
  font-size: 17px;
}

.ad-slot p {
  margin: 0;
  font-size: 14px;
}

.hero-banner {
  grid-column: 1;
  grid-row: 2;
  width: min(100%, 460px);
}

.mobile-result-banner {
  display: none;
}

.ad-slot.mobile-result-banner.has-banner {
  display: none;
}

.ad-slot.mobile-result-banner.has-adsense {
  display: none;
}

.ad-slot.has-banner {
  display: grid;
  place-items: center;
  width: min(100%, 460px);
  max-width: 100%;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: transparent;
}

.ad-slot.has-banner img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 170px;
  height: auto;
  border-radius: var(--radius-md);
}

.ad-slot.has-banner a {
  display: inline-block;
  max-width: 100%;
}

.ad-slot.has-adsense {
  display: grid;
  place-items: center;
  width: min(100%, 460px);
  max-width: 100%;
  min-height: 96px;
  padding: 0;
  overflow: hidden;
  border: 1px solid #e5e7eb;
  background: #ffffff;
}

.ad-slot.has-adsense .adsbygoogle {
  display: block;
  width: 100%;
  min-height: 96px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px 32px;
  flex-wrap: wrap;
  margin-top: 48px;
  padding: 28px max(40px, calc((100vw - 1200px) / 2));
  background: var(--surface-dark);
  color: var(--on-dark-soft);
}

.footer-copy {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 20px;
  color: var(--on-dark-soft);
  font-size: 14px;
}

.footer-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
}

.site-footer p {
  margin: 0;
  line-height: 1.4;
}

.privacy-note {
  color: #8a8a8a;
  font-size: 12px;
}

.footer-links button {
  border: 0;
  background: transparent;
  color: var(--canvas);
  padding: 0;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.footer-links a {
  color: var(--canvas);
  font-weight: 700;
}

.footer-links button:hover,
.footer-links a:hover {
  text-decoration: underline;
}

.privacy-dialog,
.share-dialog {
  width: min(520px, calc(100% - 32px));
  border: 0;
  border-radius: var(--radius-lg);
  padding: 0;
  background: transparent;
  color: var(--body);
}

.privacy-dialog::backdrop {
  background: rgba(0, 0, 0, 0.56);
}

.share-dialog::backdrop {
  background: rgba(0, 0, 0, 0.56);
}

.dialog-panel {
  padding: 28px;
  border-radius: var(--radius-lg);
  background: var(--canvas);
  box-shadow: var(--shadow-soft);
}

.dialog-panel h2 {
  margin-bottom: 16px;
  font-size: 22px;
  line-height: 1.3;
}

.dialog-panel p {
  margin-bottom: 14px;
  color: var(--body);
  font-size: 14px;
  line-height: 1.7;
}

.dialog-panel p:last-child {
  margin-bottom: 0;
}

.dialog-close {
  float: right;
  min-height: 34px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--canvas);
  color: var(--ink);
  padding: 0 12px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.dialog-close:hover {
  border-color: var(--ink);
}

.share-dialog-panel {
  width: 100%;
}

.share-dialog-actions {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.share-option-button {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
  color: var(--ink);
  padding: 0 16px;
  font: inherit;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  text-align: left;
}

.share-option-button:hover,
.share-option-button:focus-visible {
  border-color: var(--ink);
  background: var(--canvas);
}

.toilet-page {
  background: #f6f8fb;
}

.toilet-main {
  display: grid;
  justify-items: center;
  align-content: start;
  gap: 24px;
  min-height: auto;
  padding: 28px 20px 56px;
}

.toilet-panel {
  width: min(100%, 520px);
  padding: 32px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  background: var(--canvas);
  box-shadow: var(--shadow-soft);
}

.toilet-kicker {
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.toilet-panel h1 {
  margin-bottom: 24px;
  font-size: 32px;
  line-height: 1.18;
  word-break: keep-all;
}

.toilet-selector {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  padding: 6px;
  border-radius: var(--radius-lg);
  background: var(--surface-soft);
}

.toilet-option {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  font-weight: 900;
  white-space: nowrap;
  cursor: pointer;
}

.toilet-option[hidden] {
  display: none;
}

.toilet-symbol {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: rgba(17, 17, 17, 0.08);
  color: currentColor;
  flex: 0 0 auto;
}

.toilet-icon {
  display: block;
  width: 21px;
  height: 21px;
  fill: currentColor;
}

.toilet-option.is-active {
  background: var(--canvas);
  color: var(--ink);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.toilet-option.is-active .toilet-symbol {
  background: var(--ink);
  color: var(--canvas);
}

.toilet-password-card {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding: 24px;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  background: #111111;
  color: var(--on-primary);
}

.toilet-password-card[hidden] {
  display: none;
}

.toilet-password-card span {
  color: #d4d4d8;
  font-size: 14px;
  font-weight: 800;
}

.toilet-password-card strong {
  color: var(--on-primary);
  font-size: clamp(30px, 7.8vw, 44px);
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.toilet-password-card p {
  margin: 0;
  color: #a1a1aa;
  font-size: 14px;
  line-height: 1.5;
}

.toilet-bottom-ad {
  width: min(100%, 520px);
}

@media print {
  @page {
    margin: 0;
  }

  body.is-printing {
    display: block;
    min-height: auto;
    background: #ffffff;
  }

  body.is-printing .top-brand,
  body.is-printing .hero-copy,
  body.is-printing .qr-form,
  body.is-printing .ad-slot,
  body.is-printing .preview-copy,
  body.is-printing .site-footer,
  body.is-printing .privacy-dialog,
  body.is-printing .qr-domain {
    display: none !important;
  }

  body.is-printing main,
  body.is-printing .hero,
  body.is-printing .tool-card,
  body.is-printing .preview-panel,
  body.is-printing .qr-frame,
  body.is-printing .qr-output-stack,
  body.is-printing #qrCode {
    display: block !important;
    width: auto !important;
    max-width: none !important;
    height: auto !important;
    min-width: 0 !important;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
  }

  body.is-printing #qrCode.has-banner-result,
  body.is-printing #qrCode.has-review-result {
    width: var(--print-width) !important;
    height: var(--print-height) !important;
  }

  body.is-printing #qrCode.has-banner-result img,
  body.is-printing #qrCode.has-review-result img {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
    border-radius: 0;
    box-shadow: none;
  }

  body.is-printing #qrCode:not(.has-banner-result):not(.has-review-result) {
    width: var(--qr-size) !important;
    height: var(--qr-size) !important;
  }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 64px;
  }

  .hero-copy,
  .tool-card,
  .hero-banner {
    grid-column: auto;
    grid-row: auto;
  }

  .desktop-banner,
  .desktop-banner.has-banner,
  .desktop-banner.has-adsense {
    display: none;
  }

  .mobile-result-banner,
  .ad-slot.mobile-result-banner.has-banner,
  .ad-slot.mobile-result-banner.has-adsense {
    display: grid;
    width: 100%;
    margin: 18px 0 20px;
  }

  .mobile-result-banner.has-banner img {
    max-height: 140px;
  }

  .hero-copy {
    padding-top: 0;
  }

  .tool-card {
    width: 100%;
  }
}

@media (max-width: 680px) {
  .brand {
    font-size: 15px;
  }

  .top-brand {
    margin: 18px 0 0 16px;
  }

  .brand-mark {
    width: 22px;
    height: 22px;
    border-width: 6px;
    border-radius: 6px;
  }

  .hero {
    width: min(100% - 32px, 1200px);
  }

  .hero {
    gap: 32px;
    padding: 48px 0 32px;
  }

  h1 {
    font-size: 34px;
    line-height: 1.14;
    word-break: keep-all;
  }

  .hero-copy > p:not(.domain-line),
  .trust-row {
    display: none;
  }

  .hero-copy > p:not(.domain-line) {
    font-size: 16px;
  }

  .tool-card {
    padding: 18px;
  }

  .toilet-main {
    min-height: auto;
    padding: 28px 16px 48px;
  }

  .toilet-panel {
    padding: 24px 18px;
  }

  .toilet-panel h1 {
    font-size: 27px;
  }

  .mode-tabs {
    border-radius: var(--radius-lg);
  }

  .mode-tab {
    width: 100%;
    min-height: 44px;
    padding: 0 10px;
    font-size: 13px;
  }

  .preview-panel {
    grid-template-columns: 1fr;
  }

  .qr-frame {
    width: min(100%, calc(var(--qr-size) + 64px));
    max-width: 304px;
    height: auto;
    aspect-ratio: 1;
    margin: 0 auto;
  }

  .qr-frame.has-review-result,
  .qr-frame.has-banner-result {
    width: 100%;
    max-width: 100%;
    aspect-ratio: auto;
  }

  .design-option-grid {
    grid-template-columns: 1fr;
  }

  .restroom-password-grid {
    grid-template-columns: 1fr;
  }

  .site-footer {
    padding: 24px;
  }
}