:root {
  --bg: #f2f4f7;
  --card-bg: #ffffff;
  --text: #1a1a1a;
  --muted: #4a5568;
  --border: #cfd6e0;
  --primary: #1f4b99;
  --primary-hover: #183c7a;
  --secondary-bg: #eef2f7;
  --secondary-hover: #e2e8f0;
  --error: #9b1c1c;
  --error-bg: #fdecec;
  --focus: #2563eb;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(16, 24, 40, 0.08);
}

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

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Hiragino Sans",
    "Hiragino Kaku Gothic ProN",
    "Noto Sans JP",
    Meiryo,
    sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

.page {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 16px;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 20px 12px 32px;
}

.card {
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 20px;
}

@media (min-width: 900px) {
  .page {
    display: grid;
    grid-template-columns: 2fr 3fr;
    align-items: start;
    max-width: 1100px;
    gap: 20px;
    padding: 24px 20px 40px;
  }
}

.section-title {
  margin: 0 0 12px;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.site-top-link {
  display: block;
  color: var(--primary);
  font-size: 0.875rem;
  word-break: break-all;
  overflow-wrap: anywhere;
  text-decoration: underline;
}

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

.form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form .section-title {
  margin-bottom: 0;
}

.type-fieldset {
  margin: 0;
  padding: 0;
  border: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.type-legend {
  padding: 0;
  margin: 0 0 4px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--muted);
}

.type-option {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

.type-option:has(input:checked) {
  border-color: var(--primary);
  background: #f0f5fc;
}

.type-option:has(input:focus-visible) {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.type-option input {
  width: 18px;
  height: 18px;
  margin: 0;
  flex-shrink: 0;
  accent-color: var(--primary);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.input-wrap {
  position: relative;
  width: 100%;
}

#tmp-id {
  width: 100%;
  min-height: 52px;
  padding: 12px 48px 12px 14px;
  font-size: 1rem;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

#tmp-id::placeholder {
  color: #6b7280;
}

#tmp-id:focus {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-color: var(--focus);
}

.clear-button {
  position: absolute;
  top: 50%;
  right: 6px;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.clear-button:hover {
  color: var(--text);
  background: var(--secondary-bg);
}

.clear-button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.error {
  margin: 0;
  padding: 10px 12px;
  color: var(--error);
  background: var(--error-bg);
  border: 1px solid #f1b4b4;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
}

.error[hidden] {
  display: none;
}

.actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.button {
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}

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

.button-primary {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

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

.button-secondary {
  color: var(--text);
  background: var(--secondary-bg);
  border-color: var(--border);
}

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

.result {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.result[hidden] {
  display: none;
}

.result-heading {
  margin: 0 0 16px;
  font-size: 1.0625rem;
  font-weight: 700;
}

.qr-panel {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.qrcode {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 312px;
  max-width: 100%;
  min-height: 312px;
  padding: 16px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.qrcode img,
.qrcode canvas,
.qrcode table {
  display: block;
  max-width: 100%;
  height: auto !important;
}

.url-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.url-label {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 600;
}

.generated-url {
  display: block;
  padding: 12px;
  color: var(--primary);
  background: #f7f9fc;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.875rem;
  word-break: break-all;
  overflow-wrap: anywhere;
  text-decoration: underline;
}

.generated-url:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.status {
  min-height: 1.25rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 600;
}

@media (max-width: 360px) {
  .card {
    padding: 20px 14px;
  }

  .qrcode {
    min-height: 280px;
    padding: 12px;
  }
}