:root {
  --main: #008080;
  --main-dark: #0d5f5f;
  --main-soft: #e8f5f5;
  --bg: #f5f8f8;
  --card: rgba(255, 255, 255, 0.96);
  --text: #23313a;
  --muted: #5a6a74;
  --border: #d8e2e4;
  --danger: #b54747;
  --danger-soft: #fff3f1;
  --shadow: 0 14px 28px rgba(17, 41, 46, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--text);
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(0, 128, 128, 0.08), transparent 28%),
    linear-gradient(180deg, #fbfcfc 0%, #eef4f4 100%);
}

button,
select {
  font: inherit;
}

.page {
  width: min(1100px, calc(100% - 24px));
  margin: 0 auto;
  padding: 20px 0 48px;
}

.back-link {
  display: inline-block;
  margin-bottom: 16px;
  color: var(--main);
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover,
.back-link:focus-visible {
  text-decoration: underline;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero,
.control-card,
.result-panel,
.section-card {
  padding: 24px;
}

.eyebrow {
  display: inline-flex;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--main-soft);
  color: var(--main-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

h1 {
  margin: 14px 0 10px;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.3;
}

.hero-text,
.section-head p,
.meta-text {
  margin: 0;
  color: var(--muted);
}

.hero-notes {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.mini-note {
  padding: 12px 14px;
  border-radius: 14px;
  background: #f8fbfb;
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.93rem;
}

.mini-note.strong {
  background: #eef8f8;
  border-color: #bfd8d8;
  color: var(--main-dark);
  font-weight: 700;
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 18px;
  margin-top: 18px;
}

.section-card {
  margin-top: 18px;
}

.section-head h2 {
  margin: 0;
  font-size: 1.12rem;
}

.section-head-inline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.warning-box {
  margin-top: 16px;
  padding: 14px;
  border-radius: 14px;
  background: #fff8ea;
  border: 1px solid #ead08b;
  color: #765a0f;
  font-size: 0.92rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 18px;
}

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

label {
  font-weight: 700;
  font-size: 0.95rem;
}

select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #c8d5d7;
  border-radius: 14px;
  background: #fff;
  color: var(--text);
}

select:focus {
  outline: 3px solid rgba(0, 128, 128, 0.15);
  border-color: var(--main);
}

.button-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.primary-button,
.secondary-button,
.ghost-button,
.small-button {
  border: none;
  border-radius: 14px;
  cursor: pointer;
  transition: 0.15s ease;
}

.primary-button,
.secondary-button,
.ghost-button {
  padding: 14px 16px;
  font-weight: 700;
}

.primary-button {
  background: linear-gradient(135deg, var(--main), #0a6f6f);
  color: #fff;
}

.secondary-button {
  background: #f1f7f7;
  color: var(--main-dark);
  border: 1px solid #c6dcdc;
}

.ghost-button {
  background: #fff;
  color: var(--main-dark);
  border: 1px solid var(--border);
}

.ghost-button.danger {
  color: var(--danger);
  border-color: #ebc8c8;
  background: var(--danger-soft);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.small-button:hover,
.primary-button:focus-visible,
.secondary-button:focus-visible,
.ghost-button:focus-visible,
.small-button:focus-visible {
  transform: translateY(-1px);
}

.results-grid {
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.results-grid.compact {
  gap: 12px;
}

.empty-box {
  margin-top: 16px;
  padding: 16px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  background: #fafcfc;
  color: var(--muted);
}

.prompt-card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fff;
}

.prompt-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.prompt-card h3 {
  margin: 4px 0 0;
  font-size: 1rem;
}

.card-eyebrow {
  margin: 0;
  color: var(--main);
  font-size: 0.8rem;
  font-weight: 700;
}

.card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.small-button {
  padding: 10px 12px;
  background: #f4f8f8;
  color: var(--main-dark);
  border: 1px solid #d2e1e1;
  font-size: 0.88rem;
  font-weight: 700;
}

.small-button.is-active {
  background: var(--main-soft);
  border-color: #b8d5d5;
}

.small-button.remove-button {
  color: #7b4a4a;
}

.prompt-text {
  margin: 14px 0 0;
  padding: 16px;
  border-radius: 14px;
  background: #f7fafb;
  border: 1px solid #e3ecee;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.87rem;
  line-height: 1.7;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  .page {
    width: min(100% - 14px, 1100px);
    padding: 14px 0 30px;
  }

  .hero,
  .control-card,
  .result-panel,
  .section-card {
    padding: 18px;
  }

  .section-head-inline,
  .prompt-card-head {
    flex-direction: column;
  }

  .button-row {
    grid-template-columns: 1fr;
  }

  .card-actions {
    width: 100%;
    justify-content: flex-start;
  }

  select,
  .primary-button,
  .secondary-button,
  .ghost-button {
    font-size: 16px;
  }
}