/* 古いカメラ帳 - 共通スタイル
   スマホ優先・余白重視・カードUIは最小限にする。外部フォント／外部通信は使用しない。 */

:root {
  --color-bg: #f7f5f1;
  --color-surface: #ffffff;
  --color-text: #2b2724;
  --color-muted: #6b6560;
  --color-border: #e2ddd4;
  --color-accent: #7a5a3a;
  --color-accent-dark: #55402a;
  --color-notice-bg: #f1ede6;
  --color-caution-bg: #fbf3e6;
  --color-caution-border: #e6cfa1;
  --color-caution-text: #7a5424;
  --max-width: 720px;
  --radius: 6px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", Meiryo, sans-serif;
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.85;
  font-size: 16px;
}

a {
  color: var(--color-accent-dark);
}

a:hover,
a:focus {
  color: var(--color-accent);
}

.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.25rem 1.25rem 1rem;
}

.site-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
}

.site-title a {
  color: var(--color-text);
  text-decoration: none;
}

.site-tagline {
  margin: 0.25rem 0 1rem;
  color: var(--color-muted);
  font-size: 0.88rem;
}

.site-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.1rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  text-decoration: none;
  font-size: 0.92rem;
}

.site-nav a[aria-current="page"] {
  color: var(--color-accent-dark);
  font-weight: 700;
  border-bottom: 2px solid var(--color-accent);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.75rem 1.25rem 3rem;
}

h1 {
  font-size: 1.5rem;
  margin-top: 0;
  line-height: 1.5;
}

h2 {
  font-size: 1.12rem;
  margin-top: 2.2rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--color-border);
}

p {
  margin: 1rem 0;
}

.lead {
  font-size: 1.02rem;
}

.breadcrumb {
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
}

.breadcrumb a {
  text-decoration: none;
}

/* 状況説明のプレースホルダー写真枠。実写真を用意したら<img>に差し替える */
.situation-visual {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  margin: 1.1rem 0;
  border: 1px dashed var(--color-border);
  background-image: repeating-linear-gradient(
    45deg,
    var(--color-notice-bg),
    var(--color-notice-bg) 10px,
    var(--color-surface) 10px,
    var(--color-surface) 20px
  );
}

@media (max-width: 480px) {
  .situation-visual {
    aspect-ratio: 16 / 10;
  }
}

.notice {
  background-color: var(--color-notice-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.95rem 1.15rem;
  font-size: 0.94rem;
  color: var(--color-muted);
}

.caution-box {
  background-color: var(--color-caution-bg);
  border: 1px solid var(--color-caution-border);
  color: var(--color-caution-text);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  font-size: 0.9rem;
  margin: 0.9rem 0;
}

.caution-box strong {
  display: block;
  margin-bottom: 0.3rem;
}

/* 確認チェックリスト（枠なし、印だけで軽く見せる） */
.check-list {
  list-style: none;
  margin: 1rem 0;
  padding: 0;
}

.check-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.95rem;
}

.check-item:last-child {
  border-bottom: none;
}

.check-item::before {
  content: "";
  flex-shrink: 0;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: 0.25rem;
  border: 2px solid var(--color-accent);
  border-radius: 3px;
}

/* トップページの意思決定の流れ（軽量、カード化しない） */
.flow-list {
  list-style: none;
  margin: 1.25rem 0;
  padding: 0;
  counter-reset: flow;
}

.flow-list li {
  counter-increment: flow;
  position: relative;
  padding: 0.7rem 0 0.7rem 2.4rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.98rem;
}

.flow-list li:last-child {
  border-bottom: none;
}

.flow-list li::before {
  content: counter(flow);
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  color: var(--color-accent-dark);
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-list a {
  text-decoration: none;
  font-weight: 600;
}

.flow-list .flow-note {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.85rem;
  color: var(--color-muted);
  font-weight: 400;
}

/* 状況リスト（想定ユーザーの状況を並べる、装飾を抑える） */
.situation-list {
  margin: 1rem 0;
  padding-left: 1.3rem;
}

.situation-list li {
  margin-bottom: 0.45rem;
}

.text-list {
  padding-left: 1.3rem;
}

.text-list li {
  margin-bottom: 0.6rem;
}

.related-links {
  margin-top: 2.5rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--color-border);
}

.related-links h2 {
  margin-top: 0;
  border-bottom: none;
  padding-bottom: 0;
}

.related-links ul {
  padding-left: 1.3rem;
}

.related-links li {
  margin-bottom: 0.55rem;
}

.updated {
  color: var(--color-muted);
  font-size: 0.85rem;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  margin-top: 2rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem 1.25rem 2.5rem;
  color: var(--color-muted);
  font-size: 0.85rem;
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  margin: 0 0 0.75rem;
  padding: 0;
}

.footer-nav a {
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-notice {
  margin: 0 0 0.75rem;
}

.copyright {
  margin: 0;
}

@media (max-width: 480px) {
  .header-inner,
  main,
  .footer-inner {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  h1 {
    font-size: 1.3rem;
  }
}

/* 将来のCTA用スロット（現時点では広告コードなし。掲載時にここへ差し込む） */
.future-cta-slot {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 1.25rem 0;
  color: var(--color-muted);
  font-size: 0.88rem;
}