/* ===================================================
   docs.css — Dr.AISEO ユーザーマニュアル
   コーポレートサイト(style.css)のデザイントークンを踏襲
   =================================================== */

:root {
  --accent:       #7DD9ED;
  --accent-hover: #4DBEDB;
  --accent-light: #EFF9FC;
  --dark:         #111827;
  --dark-2:       #374151;
  --gray:         #6B7280;
  --gray-light:   #F9FAFB;
  --border:       #E5E7EB;
  --white:        #FFFFFF;

  --font: 'Inter', 'Noto Sans JP', sans-serif;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-h: 64px;
  --sidebar-w: 264px;

  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.10);

  --trans: 0.22s cubic-bezier(0.16,1,0.3,1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body {
  font-family: var(--font);
  color: var(--dark);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }

/* ===================== HEADER ===================== */
.dheader {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.dheader-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.dlogo { display: flex; align-items: center; gap: 10px; }
.dlogo img { height: 28px; width: auto; }
.dlogo-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--dark-2);
  background: var(--accent-light);
  border: 1px solid var(--accent);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}
.dheader-links {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 20px;
}
.dheader-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark-2);
  transition: color var(--trans);
}
.dheader-link:hover { color: var(--accent-hover); }

/* ボタン */
.btn-d {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: transform var(--trans), box-shadow var(--trans), background var(--trans);
  white-space: nowrap;
}
.btn-d:hover { transform: translateY(-2px); }
.btn-d--dark {
  background: var(--dark);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(17,24,39,0.18);
}
.btn-d--primary {
  background: var(--accent);
  color: var(--dark);
  box-shadow: 0 4px 16px rgba(125,217,237,0.4);
  padding: 14px 28px;
  font-size: 0.95rem;
}
.btn-d--primary:hover { background: var(--accent-hover); }
.btn-d--ghost {
  background: var(--white);
  color: var(--dark);
  border: 1.5px solid var(--border);
  padding: 14px 28px;
  font-size: 0.95rem;
}
.btn-d--ghost:hover { border-color: var(--dark); }

/* ===================== LAYOUT ===================== */
.dlayout {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: var(--header-h);
  display: flex;
  align-items: flex-start;
}

/* ---- サイドバー ---- */
.dsidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow-y: auto;
  padding: 32px 16px 48px 24px;
  border-right: 1px solid var(--border);
}
.snav-group { margin-bottom: 24px; }
.snav-label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
  padding: 0 12px;
  margin-bottom: 6px;
}
.snav-link {
  display: block;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--dark-2);
  transition: background var(--trans), color var(--trans);
}
.snav-link:hover { background: var(--gray-light); color: var(--dark); }
.snav-link.is-active {
  background: var(--accent-light);
  color: var(--dark);
  font-weight: 700;
  position: relative;
}
.snav-link.is-active::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 3px;
  border-radius: 2px;
  background: var(--accent-hover);
}

/* ---- メイン ---- */
.dmain {
  flex: 1;
  min-width: 0;
  padding: 40px 32px 64px 48px;
  max-width: 860px;
}

/* パンくず */
.crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--gray);
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.crumb a { color: var(--gray); transition: color var(--trans); }
.crumb a:hover { color: var(--accent-hover); }
.crumb span { color: #c5cad3; }
.crumb .crumb-cat { color: var(--gray); }
.crumb .crumb-cur { color: var(--dark); font-weight: 600; }

/* ===================== CONTENT ===================== */
.dcontent h1 {
  font-size: clamp(1.6rem, 3.4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.dcontent .lead {
  font-size: 1.02rem;
  color: var(--dark-2);
  margin-bottom: 32px;
}
.dcontent h2 {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin: 48px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  position: relative;
}
.dcontent h2::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 48px; height: 2px;
  background: var(--accent);
}
.dcontent p { margin-bottom: 16px; }
.dcontent p a, .dcontent li a, .dhelp a {
  color: var(--accent-hover);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: rgba(77,190,219,0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--trans);
}
.dcontent p a:hover, .dcontent li a:hover, .dhelp a:hover { text-decoration-color: var(--accent-hover); }
.dcontent ul, .dcontent ol { margin: 0 0 16px 1.4em; }
.dcontent li { margin-bottom: 8px; }
.dcontent strong { font-weight: 700; }

/* スクリーンショット */
.shot {
  margin: 24px 0 32px;
}
.shot img {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  width: 100%;
}
.shot figcaption {
  font-size: 0.78rem;
  color: var(--gray);
  text-align: center;
  margin-top: 10px;
}

/* POINT ボックス */
.tip {
  display: flex;
  gap: 14px;
  background: var(--accent-light);
  border: 1px solid rgba(125,217,237,0.5);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 24px 0 32px;
}
.tip-label {
  flex-shrink: 0;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-hover);
  padding-top: 4px;
}
.tip-body { font-size: 0.92rem; color: var(--dark-2); }

/* ステップ (クイックスタート) */
.step {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 28px 16px;
  margin-bottom: 24px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
.step-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.step-num {
  flex-shrink: 0;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--dark);
  background: var(--accent);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}
.step .step-head h2 {
  margin: 0;
  padding: 0;
  border: none;
  font-size: 1.15rem;
}
.step .step-head h2::after { display: none; }
.step .tip { margin: 16px 0; }

/* カードグリッド (トップページ) */
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 28px 0 16px;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0 8px;
}
.card-grid--2 { grid-template-columns: repeat(2, 1fr); }
.card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  background: var(--white);
  transition: transform var(--trans), box-shadow var(--trans), border-color var(--trans);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.card-num {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-hover);
  margin-bottom: 8px;
}
.card-title {
  font-size: 0.98rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.card-desc {
  font-size: 0.82rem;
  color: var(--gray);
  line-height: 1.65;
}

/* ファネル (ダッシュボード指標) */
.funnel {
  list-style: none;
  margin: 24px 0 24px !important;
  padding: 0;
  counter-reset: funnel;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.funnel > li {
  position: relative;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: 16px 20px;
  background: var(--white);
  margin: 0;
}
.funnel > li:not(:last-child) { margin-bottom: 28px; }
.funnel > li:not(:last-child)::after {
  content: '▼';
  position: absolute;
  left: 50%;
  bottom: -23px;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--accent);
}
.funnel-phase {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 6px;
}
.funnel-desc { font-size: 0.92rem; color: var(--dark-2); }
.funnel-metric {
  display: inline-block;
  font-weight: 800;
  color: var(--accent-hover);
  background: var(--accent-light);
  border: 1px solid rgba(125,217,237,0.6);
  border-radius: var(--radius-pill);
  padding: 1px 12px;
  margin: 0 2px;
}

/* 用語集 */
.glossary { margin: 0 0 24px; }
.glossary dt {
  font-weight: 700;
  font-size: 0.98rem;
  padding: 16px 0 4px;
  border-top: 1px solid var(--border);
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.glossary dt:first-child { border-top: none; padding-top: 0; }
.glossary dd {
  font-size: 0.92rem;
  color: var(--dark-2);
  padding-bottom: 16px;
}

/* 前後ナビ */
.pn {
  display: flex;
  gap: 16px;
  margin-top: 56px;
}
.pn-link {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: border-color var(--trans), box-shadow var(--trans);
}
.pn-link:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.pn-next { text-align: right; }
.pn-dir {
  display: block;
  font-size: 0.72rem;
  color: var(--gray);
  margin-bottom: 4px;
}
.pn-title { font-size: 0.92rem; font-weight: 700; }
.pn-spacer { flex: 1; }

/* ヘルプ・フッター */
.dhelp {
  margin-top: 40px;
  background: var(--gray-light);
  border-radius: var(--radius);
  padding: 24px 28px;
}
.dhelp-title { font-weight: 800; margin-bottom: 6px; }
.dhelp p { font-size: 0.9rem; color: var(--dark-2); }
.dfooter {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--gray);
}

/* ===================== MOBILE ===================== */
.dnav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
}
.dnav-toggle span {
  display: block;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
}
.dsidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(17,24,39,0.4);
  z-index: 98;
}
.dsidebar-overlay.is-open { display: block; }

@media (max-width: 1024px) {
  .dmain { padding: 32px 24px 56px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .dnav-toggle { display: flex; }
  .dheader-link { display: none; }
  .dheader-inner { padding: 0 12px; gap: 8px; }
  .dlogo img { height: 24px; }
  .dlogo-badge { font-size: 0.62rem; padding: 2px 8px; }
  .dheader-links .btn-d--dark { padding: 8px 14px; font-size: 0.78rem; }
  .dsidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    bottom: 0;
    height: auto;
    background: var(--white);
    z-index: 99;
    transform: translateX(-100%);
    transition: transform var(--trans);
    box-shadow: var(--shadow-md);
  }
  .dsidebar.is-open { transform: translateX(0); }
  .dmain { padding: 24px 20px 48px; }
  .card-grid, .card-grid--2 { grid-template-columns: 1fr; }
  .pn { flex-direction: column; }
  .pn-spacer { display: none; }
  .step { padding: 20px 20px 8px; }
  .step-head { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .dlogo-badge { display: none; }
}