/*
 * ebis AI — 共通スタイル (素HTML サイト全体で使用)
 *
 * ブランディング v2 (2026-04-25 確定):
 *   サイト名: ebis AI / キャッチ: 業務にAIを、現場に成果を。
 *   メイン: Navy / アクセント: Emerald (受託リード CTA 専用)
 *
 * 使い方:
 *   <link rel="stylesheet" href="/_shared/style.css">
 *   (デプロイ時は _shared/ を public/ にコピー or 同等パスへ配置)
 */

/* ---------- フォント ---------- */
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/_shared/fonts/InterVariable.woff2") format("woff2");
}

@font-face {
  font-family: "Inter";
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url("/_shared/fonts/InterVariable-Italic.woff2") format("woff2");
}

/* ---------- カラートークン ---------- */
:root {
  --color-primary: #0F2A52;        /* Navy: ロゴ・見出し・主要要素 */
  --color-primary-fg: #FFFFFF;
  --color-accent: #10B981;         /* Emerald: 受託リード CTA 専用 (景表法注意の上で固定使用) */
  --color-accent-fg: #FFFFFF;
  --color-text: #1F2937;
  --color-text-muted: #6B7280;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-border: #E5E7EB;
  --color-link: #1D4ED8;
  --gradient-hero: linear-gradient(135deg, #0F2A52 0%, #1D4ED8 100%);
  --color-family-bg: #EEF2FF;
  --color-family-fg: #3730A3;

  --font-sans: "Inter", "Hiragino Kaku Gothic ProN", "Yu Gothic", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Consolas, monospace;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(15, 42, 82, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 42, 82, 0.10);
  --shadow-lg: 0 18px 40px rgba(15, 42, 82, 0.07);

  --max-w-content: 720px;
  --max-w-wide: 1080px;
}

/* ---------- リセット ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--color-link); text-decoration: underline; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }

/* ---------- レイアウト ---------- */
.container {
  width: 100%;
  max-width: var(--max-w-content);
  margin: 0 auto;
  padding: 0 1rem;
}
.container-wide {
  width: 100%;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 1rem;
}

/* ---------- ヘッダー ---------- */
.site-header {
  background: var(--color-primary);
  color: var(--color-primary-fg);
  padding: 0.75rem 0;
}
.site-header .container-wide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.site-header .logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary-fg);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.site-header nav a {
  color: var(--color-primary-fg);
  margin-left: 1rem;
  text-decoration: none;
  font-size: 0.95rem;
  opacity: 0.9;
}
.site-header nav a:hover { opacity: 1; text-decoration: underline; }

/* ---------- 本文 ---------- */
.article-body { padding: 2rem 0 3rem; }
.article-body h1 {
  font-size: 1.875rem;
  line-height: 1.35;
  color: var(--color-primary);
  margin: 0 0 0.75rem;
}
.article-body h2 {
  font-size: 1.4rem;
  line-height: 1.4;
  color: var(--color-primary);
  margin: 2.25rem 0 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 2px solid var(--color-primary);
}
.article-body h3 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.5rem;
  color: var(--color-primary);
}
.article-body p { margin: 0.85rem 0; }
.article-body ul, .article-body ol { padding-left: 1.4rem; }
.article-body code {
  background: var(--color-bg-alt);
  padding: 0.1em 0.35em;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9em;
}
.article-body pre {
  background: var(--color-bg-alt);
  padding: 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  border: 1px solid var(--color-border);
}
.article-body blockquote {
  border-left: 3px solid var(--color-primary);
  margin: 1rem 0;
  padding: 0.4rem 0 0.4rem 1rem;
  color: var(--color-text-muted);
}

/* ---------- visual GL v1 共通コンポーネント ---------- */
.eyebrow,
.caption,
.meta-label,
.site-kicker {
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.hero-shell {
  padding: 3rem 0 2rem;
}

.hero-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
}

.hero-panel,
.content-panel,
.card,
.case-card,
.metric-card,
.note-banner,
.newsletter-shell,
.redirect-card,
.source-block,
.score-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.hero-panel {
  padding: 2rem;
}

.hero-panel h1 {
  margin: 0.35rem 0 0.85rem;
  font-size: clamp(2rem, 3vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
}

.hero-panel p {
  max-width: 42rem;
  font-size: 1.02rem;
}

.hero-side {
  display: grid;
  gap: 1rem;
}

.hero-actions,
.tag-list,
.card-grid,
.metric-grid,
.score-grid,
.mini-list,
.topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-actions {
  margin-top: 1.5rem;
}

.content-stack {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.content-panel,
.metric-card,
.case-card,
.newsletter-shell,
.redirect-card,
.source-block,
.score-card,
.note-banner {
  padding: 1.4rem;
}

.content-panel {
  padding: 1.6rem;
}

.metric-card h2,
.content-panel h2,
.case-card h2,
.newsletter-shell h2,
.score-card h2 {
  margin-top: 0;
}

.metric-grid {
  margin-top: 0.85rem;
}

.metric-grid > div {
  min-width: 128px;
  flex: 1 1 0;
}

.metric-grid strong {
  display: block;
  font-size: 1.45rem;
  color: var(--color-primary);
}

.card-grid {
  align-items: stretch;
}

.card,
.case-card,
.score-card {
  flex: 1 1 220px;
}

.card h3,
.case-card h3,
.score-card h3 {
  margin-top: 0;
}

.case-card .meta-row,
.source-grid,
.info-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.source-grid {
  margin-top: 1rem;
}

.meta-box,
.info-box {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 0.85rem 0.95rem;
}

.meta-box strong,
.info-box strong,
.source-block strong {
  display: block;
  color: var(--color-primary);
}

.case-meta {
  margin-top: 1.5rem;
}

.section-title {
  margin-bottom: 0.4rem;
}

.lead-callout {
  background: var(--gradient-hero);
  color: var(--color-primary-fg);
}

.lead-callout h2,
.lead-callout h3,
.lead-callout p,
.lead-callout .caption {
  color: inherit;
}

.lead-callout .cta-newsletter,
.lead-callout .cta-primary,
.lead-callout .cta-leadmagnet {
  background: var(--color-primary-fg);
  color: var(--color-primary);
}

.source-block ul,
.compact-list,
.case-list {
  margin: 0;
  padding-left: 1.2rem;
}

.compact-list li + li,
.case-list li + li {
  margin-top: 0.45rem;
}

.page-intro {
  padding-top: 2.4rem;
}

.page-intro h1 {
  margin-bottom: 0.55rem;
}

.topic-links a {
  text-decoration: none;
}

.newsletter-form {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.25rem;
}

.newsletter-form input {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  font: inherit;
}

.newsletter-form button[disabled] {
  opacity: 0.7;
  cursor: not-allowed;
}

.redirect-card {
  max-width: 42rem;
  margin: 2.5rem auto;
}

/* ---------- CTA ボタン ---------- */
.cta {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  border: none;
  cursor: pointer;
}
/* 受託リード CTA = Emerald 固定 (全記事末尾共通、CEO 4/25 指示) */
.cta-lead {
  background: var(--color-accent);
  color: var(--color-accent-fg);
  box-shadow: var(--shadow-sm);
}
.cta-lead:hover { background: #0E9F6E; }

/* 主 CTA = Navy ベース */
.cta-newsletter,
.cta-primary,
.cta-leadmagnet {
  background: var(--color-primary);
  color: var(--color-primary-fg);
}

.pill,
.tag,
.score-pill,
.cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.85rem;
  font-size: 0.88rem;
  text-decoration: none;
}

.pill,
.cta-secondary {
  background: #e0f2fe;
  color: #0c4a6e;
}

.tag {
  background: #f8fafc;
  color: #334155;
  border: 1px solid #dbe4ee;
}

.score-pill {
  background: var(--color-family-bg);
  color: var(--color-family-fg);
}

.score-star,
.score-pill {
  border: 1px solid transparent;
  font-weight: 700;
}

.score-star {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.7rem;
  font-size: 1rem;
  line-height: 1;
}

.score-star.cred-3,
.score-pill.cred-3 {
  background: var(--color-primary);
  color: var(--color-primary-fg);
  border-color: var(--color-primary);
  font-weight: 800;
}

.score-star.cred-2,
.score-pill.cred-2 {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 700;
}

.score-star.cred-1,
.score-pill.cred-1 {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
  font-weight: 600;
}

.family-pill,
.score-pill.family-pill {
  background: var(--color-family-bg);
  color: var(--color-family-fg);
}

/* ---------- 記事末リードマグネット配布枠 ---------- */
.leadmagnet-block {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  text-align: center;
}
.leadmagnet-block h3 {
  margin: 0 0 0.5rem;
  color: var(--color-primary);
}
.leadmagnet-block p { color: var(--color-text-muted); margin: 0.25rem 0 1rem; }

/* ---------- 受託リード CTA ブロック (全記事末尾共通) ---------- */
.lead-cta-block {
  background: var(--color-primary);
  color: var(--color-primary-fg);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  margin: 2.5rem 0 1rem;
  text-align: center;
}
.lead-cta-block h3 { margin: 0 0 0.5rem; color: var(--color-primary-fg); }
.lead-cta-block p { color: rgba(255,255,255,0.85); margin: 0.25rem 0 1.25rem; }

/* ---------- フッター ---------- */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0 2.5rem;
  margin-top: 3rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.site-footer nav { margin-bottom: 1rem; }
.site-footer nav a {
  color: var(--color-text-muted);
  margin-right: 1rem;
}
.site-footer .disclosure {
  margin-top: 1rem;
  font-size: 0.8rem;
  line-height: 1.6;
  border-top: 1px dashed var(--color-border);
  padding-top: 1rem;
  color: var(--color-text-muted);
}

.site-footer .family-note {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--color-border);
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .site-header .container-wide {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  .article-body h1 { font-size: 1.5rem; }
  .article-body h2 { font-size: 1.2rem; }
  .site-header nav a { margin-left: 0.6rem; font-size: 0.85rem; }

  .hero-panel,
  .content-panel,
  .case-card,
  .metric-card,
  .newsletter-shell,
  .redirect-card,
  .source-block,
  .score-card {
    padding: 1.15rem;
    border-radius: var(--radius-lg);
  }

  .hero-panel h1 {
    font-size: 2rem;
  }

  .hero-shell {
    padding-top: 2rem;
  }
}