/* lp-checklist-generator — 最小限の独立CSS（外部依存なし）
 *
 * カラートークンは brand/brand-guidelines.md v1.0（Deep Green/Gold/Ivory + Copper/Charcoal）の
 * ライトモード配色に準拠。prototypes/free-tools/price-estimator の配色定義を踏襲。
 * --color-text-muted は小文字サイズでWCAG AA(4.5:1)を満たすよう調整済みの値を使用
 * （ブランド正規値 #8A8368 ではなく #6B6456。ロゴ・見出し等の正規カラーは変更していない）。
 */

:root {
  --color-bg: #f1eada;            /* Ivory Paper */
  --color-surface: #ffffff;
  --color-border: #d8d0be;        /* Ivory Line */
  --color-text: #2b2b28;          /* Charcoal */
  --color-text-muted: #6b6456;    /* a11y調整版 */
  --color-primary: #22372e;       /* Deep Green（反転ブロック用） */
  --color-primary-contrast: #ede4ce; /* Ivory */
  --color-primary-subcopy: #cfcbb5;
  --color-gold: #b08d3f;          /* Gold */
  --color-accent: #a4633a;        /* Copper（主CTA背景） */
  --color-accent-tint: rgba(164, 99, 58, 0.1);
  --color-warn-bg: #fff6e5;
  --color-warn-border: #e8c37a;
  --color-warn-text: #6b4f14;
  --color-success: #2f6b4f;
  --radius: 10px;
  --max-width: 780px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Yu Gothic", "Noto Sans JP", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
}

.proto-banner {
  background: var(--color-warn-bg);
  border-bottom: 1px solid var(--color-warn-border);
  color: var(--color-warn-text);
  font-size: 0.8rem;
  padding: 0.6rem 1rem;
  text-align: center;
}

.site-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1rem;
  text-align: center;
}

.eyebrow {
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  color: var(--color-text);
  font-weight: 700;
  margin: 0 0 0.5rem;
}

.site-header h1 {
  font-size: 1.6rem;
  margin: 0 0 0.75rem;
}

.lead {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.privacy-note {
  display: inline-block;
  margin: 1rem auto 0;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem 3rem;
}

fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  padding: 1rem 1.1rem 1.2rem;
  margin: 0 0 1rem;
  min-width: 0;
}

legend {
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.step-no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  font-size: 0.75rem;
  flex-shrink: 0;
}

.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

@media (min-width: 560px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.opt {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 0.9rem;
  cursor: pointer;
  background: #fff;
  min-height: 44px;
}

.opt:has(input:checked) {
  border-color: var(--color-accent);
  background: var(--color-accent-tint);
}

.opt:has(input:focus-visible) {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.opt input {
  accent-color: var(--color-accent);
  width: 1.05rem;
  height: 1.05rem;
  flex-shrink: 0;
}

.btn-primary {
  display: block;
  width: 100%;
  min-height: 48px;
  padding: 0.95rem 1rem;
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.btn-primary:hover { opacity: 0.85; }
.btn-primary:active { opacity: 0.7; }

.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.btn-secondary {
  display: inline-block;
  width: 100%;
  min-height: 48px;
  padding: 0.9rem 1rem;
  background: #fff;
  color: var(--color-text);
  border: 1px solid var(--color-text);
  border-radius: var(--radius);
  font-size: 0.95rem;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

.btn-secondary:hover { background: var(--color-accent-tint); }

.btn-cta { margin-bottom: 0.6rem; }

.result-section {
  margin-top: 2rem;
  border-top: 2px solid var(--color-border);
  padding-top: 1.5rem;
}

.result-card {
  background: var(--color-primary);
  color: var(--color-primary-contrast);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  margin-bottom: 1.25rem;
}

.result-plan-label {
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  color: var(--color-primary-contrast);
  opacity: 0.9;
  margin: 0 0 0.4rem;
}

.result-range {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-gold);
  margin: 0 0 0.4rem;
}

.result-note {
  font-size: 0.75rem;
  color: var(--color-primary-subcopy);
  margin: 0;
}

.progress-wrap {
  margin-bottom: 1.5rem;
}

.progress-bar {
  width: 100%;
  height: 10px;
  background: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-success);
  transition: width 0.25s ease;
}

.progress-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0.4rem 0 0;
  text-align: center;
}

.result-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  margin-bottom: 1rem;
}

.result-block h3 {
  font-size: 0.95rem;
  margin: 0 0 0.6rem;
}

.checklist-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.checklist-item {
  margin-bottom: 0.4rem;
}

.checklist-label {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.88rem;
}

.checklist-label:hover {
  background: var(--color-accent-tint);
}

.checklist-label input[type="checkbox"] {
  margin-top: 0.2rem;
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--color-success);
  flex-shrink: 0;
}

.checklist-label:has(input:checked) span {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.disclaimer-block p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0 0 0.6rem;
}

.disclaimer-block p:last-child { margin-bottom: 0; }

.cta-block {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  text-align: center;
  margin: 1.5rem 0;
}

@media (min-width: 480px) {
  .cta-block {
    flex-direction: row;
  }
}

.site-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  padding: 1.5rem 1rem 2.5rem;
}

@media (max-width: 400px) {
  .site-header h1 { font-size: 1.35rem; }
  .result-range { font-size: 1.3rem; }
}

@media print {
  .proto-banner,
  form,
  .cta-block,
  .privacy-note {
    display: none !important;
  }
  body { background: #fff; }
}