/* ==========================================================================
   AI稟議書ジェネレーター -- style
   NOVELデザインガイドライン準拠（templates/brand_design_guideline.md）。
   基調: 白背景 + 青のシグネチャーグラデーション。フラット（影なし・1px枠・角丸4px）。
   フォント: Noto Sans JP（本文/見出し）+ Outfit（英語ラベル・数字）。
   オレンジ #F97316 / #C2410C は「削減効果」の1点ハイライトのみに限定。
   稟議書プレビューは「A4の白い紙」メタファーを維持（白地・1px #E3E3E3・影なし）。
   ========================================================================== */

:root {
  /* Brand */
  --nvl-blue:   #007ECA;
  --nvl-cyan:   #74D8EC;
  --nvl-navy:   #004873;
  --nvl-gradient: linear-gradient(135deg, #007ECA, #74D8EC);
  /* Accent (v1.1) -- 削減効果ハイライト専用 */
  --nvl-orange:      #F97316;
  --nvl-orange-text: #C2410C;
  --nvl-tint-orange: rgba(249, 115, 22, 0.08);
  --nvl-orange-line: rgba(249, 115, 22, 0.35);
  /* Neutral */
  --nvl-ink:     #080808;
  --nvl-text:    #333333;
  --nvl-faint:   #8a8a8a;
  --nvl-border:  #E3E3E3;
  --nvl-bg-light:#F2F2F2;
  --nvl-bg-dark: #121212;
  /* Tint */
  --nvl-tint-blue: rgba(0, 126, 202, 0.05);
  --nvl-focus:     rgba(0, 126, 202, 0.28);
  /* Fonts */
  --nvl-font-ja: 'Noto Sans JP', -apple-system, BlinkMacSystemFont,
                 "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI",
                 "Meiryo", system-ui, sans-serif;
  --nvl-font-en: 'Outfit', var(--nvl-font-ja);

  --radius: 4px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--nvl-font-ja);
  color: var(--nvl-ink);
  background: #ffffff;
  line-height: 1.7;
  font-size: 15px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
}

.tnum,
.metric-value,
.slider-out { font-variant-numeric: tabular-nums; font-feature-settings: "tnum"; }

/* ---------- ヒーロー (グラデーション大面積・白文字) ---------- */
.hero {
  background: var(--nvl-gradient);
  padding: 46px 20px 48px;
}
.hero-inner { max-width: 1080px; margin: 0 auto; }
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 500; font-size: 0.85rem; letter-spacing: 0.08em;
  background: rgba(255, 255, 255, 0.14); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.55);
  padding: 6px 14px; border-radius: 999px;
}
.hero h1 {
  margin: 20px 0 12px;
  font-size: clamp(1.95rem, 5.6vw, 3.1rem);
  line-height: 1.28; font-weight: 700; letter-spacing: 0.02em;
  color: #fff;
}
.hero h1 .hl {
  color: #fff;
  position: relative;
  white-space: nowrap;
}
.hero h1 .hl::after {
  content: "";
  position: absolute;
  left: -2px; right: -2px; bottom: 4px; height: 0.30em;
  background: rgba(255, 255, 255, 0.28);
  z-index: -1;
}
.hero .lede {
  margin: 0 0 18px; max-width: 46em;
  color: rgba(255, 255, 255, 0.9); font-size: 1.02rem; line-height: 1.9;
}
.privacy-badge {
  display: inline-block; margin: 0; font-size: 0.82rem; font-weight: 500;
  letter-spacing: 0.02em;
  background: rgba(255, 255, 255, 0.12); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.55);
  padding: 7px 14px; border-radius: 999px;
}

/* ---------- レイアウト ---------- */
.layout {
  max-width: 1080px; margin: 0 auto; padding: 40px 20px 8px;
  display: grid; gap: 24px;
}
.panel {
  background: #fff;
  border: 1px solid var(--nvl-border);
  border-radius: var(--radius);
  padding: 26px 24px;
}

/* セクション見出し: 英語ラベル(Outfit・グラデ文字) + 日本語見出しの2段 */
.step-head {
  margin: 0 0 22px;
  display: flex; align-items: flex-start; gap: 14px;
  font-size: inherit; font-weight: inherit;
}
.step-num {
  flex: none; width: 34px; height: 34px;
  display: inline-grid; place-items: center;
  background: var(--nvl-blue); color: #fff; border-radius: 50%;
  font-family: var(--nvl-font-en); font-weight: 500; font-size: 1.05rem;
  line-height: 1;
}
.step-titles { display: flex; flex-direction: column; gap: 3px; min-width: 0; padding-top: 1px; }
.step-en {
  font-family: var(--nvl-font-en); font-weight: 500; font-size: 0.78rem;
  letter-spacing: 0.14em; text-transform: uppercase;
  background: var(--nvl-gradient);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step-ja {
  font-size: 1.18rem; font-weight: 700; color: var(--nvl-ink); letter-spacing: 0.04em;
  display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; line-height: 1.4;
}
.step-head small {
  font-weight: 500; font-size: 0.72rem; color: var(--nvl-blue); letter-spacing: 0.08em;
  background: var(--nvl-tint-blue); border: 1px solid var(--nvl-border);
  padding: 2px 9px; border-radius: 999px;
}

/* ---------- Step1 ツールカード ---------- */
.tool-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px;
}
.tool-card {
  text-align: left; cursor: pointer;
  background: #fff;
  border: 1px solid var(--nvl-border);
  border-radius: var(--radius);
  padding: 13px 14px;
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
  display: flex; gap: 11px; align-items: flex-start; font: inherit; color: inherit; width: 100%;
}
.tool-card:hover { border-color: var(--nvl-blue); background: var(--nvl-tint-blue); }
.tool-card.is-active {
  border-color: var(--nvl-blue);
  background: var(--nvl-tint-blue);
  box-shadow: inset 0 0 0 1px var(--nvl-blue);
}
.tool-card:focus-visible { outline: 2px solid var(--nvl-blue); outline-offset: 2px; }
.tc-emoji {
  font-size: 1.3rem; line-height: 1; flex: none;
  width: 40px; height: 40px; display: grid; place-items: center;
  background: var(--nvl-bg-light); border: 1px solid var(--nvl-border); border-radius: var(--radius);
}
.tool-card.is-active .tc-emoji { background: #fff; border-color: var(--nvl-blue); }
.tc-body { min-width: 0; }
.tc-name { display: block; font-weight: 700; font-size: 0.95rem; margin: 0 0 3px; line-height: 1.35; color: var(--nvl-ink); }
.tc-note { display: block; font-size: 0.78rem; color: var(--nvl-text); margin: 0; line-height: 1.5; }
.badge-ref {
  display: inline-block; font-size: 0.66rem; font-weight: 500; color: var(--nvl-blue);
  background: var(--nvl-tint-blue); border: 1px solid var(--nvl-border); border-radius: 999px;
  padding: 1px 7px; margin-left: 6px; letter-spacing: 0.04em;
  vertical-align: middle;
}

/* ---------- 入力 ---------- */
.conditional { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--nvl-border); }
.field { margin-bottom: 18px; }
.field:last-child { margin-bottom: 0; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label, .field-label {
  display: block; font-weight: 500; font-size: 0.86rem; color: var(--nvl-text);
  letter-spacing: 0.04em; margin-bottom: 8px;
}
input[type="text"], input[type="number"], select {
  width: 100%; padding: 10px 12px; font: inherit; font-size: 0.95rem; color: var(--nvl-ink);
  background: #fff; border: 1px solid var(--nvl-border); border-radius: var(--radius);
  transition: border-color .15s ease, box-shadow .15s ease;
}
input[type="number"] { font-family: var(--nvl-font-en); font-variant-numeric: tabular-nums; }
input[type="text"]:focus, input[type="number"]:focus, select:focus {
  outline: none;
  border-color: var(--nvl-blue);
  box-shadow: 0 0 0 3px var(--nvl-focus);
}
.hint { margin: 7px 0 0; font-size: 0.78rem; color: var(--nvl-faint); line-height: 1.6; }

input[type="range"] { width: 100%; accent-color: var(--nvl-blue); height: 26px; }
.slider-out {
  float: right; font-weight: 500; color: var(--nvl-blue); font-size: 0.84rem;
  font-family: var(--nvl-font-en);
  background: var(--nvl-tint-blue); border: 1px solid var(--nvl-border);
  border-radius: 999px; padding: 1px 10px;
}

/* 対象業務チェック */
.task-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 8px; }
.task-chip {
  display: flex; align-items: center; gap: 8px; padding: 10px 12px; cursor: pointer;
  border: 1px solid var(--nvl-border); border-radius: var(--radius);
  background: #fff; font-size: 0.88rem; font-weight: 500; color: var(--nvl-text);
  transition: border-color .15s ease, background .15s ease;
}
.task-chip:hover { border-color: var(--nvl-blue); }
.task-chip.is-on {
  border-color: var(--nvl-blue);
  background: var(--nvl-tint-blue);
  color: var(--nvl-ink);
}
.task-chip input { width: 16px; height: 16px; accent-color: var(--nvl-blue); flex: none; }

/* 控えめ/標準トグル */
.preset-toggle {
  display: inline-flex; border: 1px solid var(--nvl-border); border-radius: var(--radius);
  overflow: hidden; margin-bottom: 4px; background: #fff;
}
.preset-btn {
  font: inherit; font-size: 0.88rem; font-weight: 500; padding: 8px 20px; cursor: pointer;
  background: #fff; color: var(--nvl-text); border: none; border-right: 1px solid var(--nvl-border);
  transition: background .15s ease, color .15s ease;
}
.preset-btn:last-child { border-right: none; }
.preset-btn.is-active { background: var(--nvl-blue); color: #fff; }
.preset-btn:focus-visible { outline: 2px solid var(--nvl-blue); outline-offset: -2px; }

.minutes-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 8px; margin-top: 12px; }
.min-row { display: flex; align-items: center; gap: 8px; font-size: 0.85rem; }
.min-row label { margin: 0; font-weight: 500; flex: 1; color: var(--nvl-text); }
.min-row input { width: 78px; padding: 7px 9px; text-align: right; }
.min-row .unit { color: var(--nvl-faint); font-size: 0.8rem; }
.minutes-empty { font-size: 0.85rem; color: var(--nvl-faint); margin: 8px 0 0; }

/* ---------- Step3 サマリー ---------- */
.result-panel { background: #fff; }
.summary-card {
  background: var(--nvl-bg-light);
  border: 1px solid var(--nvl-border);
  border-radius: var(--radius);
  padding: 20px 18px; margin-bottom: 26px;
}
.summary-eyebrow {
  font-size: 0.78rem; font-weight: 700; color: var(--nvl-blue);
  letter-spacing: 0.1em; margin-bottom: 14px;
}
.summary-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.metric {
  background: #fff; border: 1px solid var(--nvl-border); border-radius: var(--radius);
  padding: 14px 10px; text-align: center;
}
.metric-effect { background: var(--nvl-tint-orange); border-color: var(--nvl-orange-line); }
.metric-label { display: block; font-size: 0.74rem; color: var(--nvl-text); font-weight: 500; letter-spacing: 0.04em; margin-bottom: 5px; }
.metric-value {
  display: block; font-size: clamp(19px, 4.4vw, 26px); font-weight: 500; color: var(--nvl-ink);
  font-family: var(--nvl-font-en);
}
.metric-effect .metric-value { color: var(--nvl-orange-text); }
.summary-line { font-size: 0.88rem; color: var(--nvl-text); margin: 14px 0 12px; line-height: 1.8; }

.compare-bars { display: grid; gap: 9px; margin-bottom: 14px; }
.cbar-row { display: flex; align-items: center; gap: 10px; }
.cbar-name { width: 34px; font-size: 0.8rem; font-weight: 700; color: var(--nvl-ink); flex: none; }
.cbar-track {
  flex: 1; height: 16px; background: #fff;
  border: 1px solid var(--nvl-border); border-radius: 999px; overflow: hidden;
}
.cbar-fill { display: block; height: 100%; transition: width .25s ease; min-width: 3px; border-radius: 999px; }
.cbar-cost { background: var(--nvl-blue); }
.cbar-effect { background: var(--nvl-orange); }

.assump-toggle {
  width: 100%; text-align: left;
  font: inherit; font-size: 0.88rem; font-weight: 500; color: var(--nvl-text);
  background: #fff; border: 1px solid var(--nvl-border); border-radius: var(--radius);
  cursor: pointer; padding: 11px 14px; margin-top: 12px;
  display: flex; align-items: center; gap: 8px;
  transition: border-color .15s ease, background .15s ease;
}
.assump-toggle:hover { border-color: var(--nvl-blue); background: var(--nvl-tint-blue); }
.assump-toggle .chev { margin-left: auto; transition: transform .2s ease; color: var(--nvl-blue); }
.assump-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.assump {
  margin-top: 10px; padding: 16px;
  background: var(--nvl-bg-light);
  border: 1px solid var(--nvl-border);
  border-radius: var(--radius);
  font-size: 0.82rem; color: var(--nvl-text);
}
.assump h4 { margin: 0 0 6px; font-size: 0.85rem; color: var(--nvl-ink); font-weight: 700; }
.assump h4:not(:first-child) { margin-top: 16px; }
.assump ul { margin: 0 0 12px; padding-left: 18px; }
.assump li { margin-bottom: 4px; }
.assump table { width: 100%; border-collapse: collapse; margin-top: 6px; }
.assump th, .assump td { border-bottom: 1px solid var(--nvl-border); padding: 6px 8px; text-align: left; font-size: 0.78rem; }
.assump th { color: var(--nvl-ink); font-weight: 700; }

/* ---------- 稟議書ドラフト (A4 白紙・1px枠・影なし。組版は簡素な公文書スタイル) ---------- */
.draft-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  flex-wrap: wrap; margin-bottom: 14px;
}
.draft-head h3 { margin: 0; font-size: 1.05rem; font-weight: 700; color: var(--nvl-ink); letter-spacing: 0.04em; }
.draft-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.act-btn {
  font: inherit; font-size: 0.84rem; font-weight: 500; padding: 9px 14px; cursor: pointer;
  background: #fff; color: var(--nvl-blue); border: 1px solid var(--nvl-blue); border-radius: var(--radius);
  transition: background .15s ease, color .15s ease;
}
.act-btn:hover { background: var(--nvl-tint-blue); }
.act-btn.copied { background: var(--nvl-blue); color: #fff; border-color: var(--nvl-blue); }

.paper {
  background: #fff;
  border: 1px solid var(--nvl-border);
  border-radius: var(--radius);
  padding: clamp(20px, 4vw, 40px);
  max-width: 720px; margin: 0 auto;
  color: var(--nvl-ink); line-height: 1.85;
  font-size: 14px;
}
.paper .doc-title {
  text-align: center; font-size: 21px; font-weight: 700; letter-spacing: .35em;
  margin: 0 0 6px; padding-bottom: 0;
}
.paper .doc-meta { text-align: right; font-size: 12px; color: var(--nvl-faint); margin: 0 0 20px; }
.paper .doc-subject {
  text-align: center; font-size: 16px; font-weight: 700; margin: 0 auto 24px; max-width: 90%;
  padding-bottom: 10px; border-bottom: 2px solid var(--nvl-ink);
}
.paper h4 {
  font-size: 14.5px; font-weight: 700; margin: 22px 0 8px; color: var(--nvl-ink);
  border-left: 3px solid var(--nvl-blue); padding-left: 10px;
}
.paper h4:first-of-type { margin-top: 0; }
.paper p { margin: 0 0 10px; }
.paper .doc-table { width: 100%; border-collapse: collapse; margin: 4px 0 8px; }
.paper .doc-table th, .paper .doc-table td {
  border: 1px solid var(--nvl-border); padding: 8px 10px; font-size: 13.5px; text-align: left; vertical-align: top;
}
.paper .doc-table th { background: var(--nvl-bg-light); font-weight: 700; width: 34%; white-space: nowrap; }
.paper .doc-foot { font-size: 12px; color: var(--nvl-text); margin: 6px 0 0; }
.paper ol.doc-list, .paper ul.doc-list { margin: 4px 0 8px; padding-left: 22px; }
.paper ol.doc-list li, .paper ul.doc-list li { margin-bottom: 6px; }
.paper .risk-item { margin-bottom: 8px; }
.paper .risk-item b { font-weight: 700; }

/* ---------- SEO 本文 (淡背景セクションで色面リズムを作る) ---------- */
.about {
  max-width: 1080px; margin: 40px auto 0; padding: 32px 28px;
  border: 1px solid var(--nvl-border); border-radius: var(--radius);
  background: var(--nvl-bg-light);
  color: var(--nvl-text);
}
.about h2 { font-size: 1.2rem; color: var(--nvl-ink); margin: 0 0 12px; font-weight: 700; letter-spacing: 0.04em; }
.about h3 { font-size: 1.02rem; color: var(--nvl-ink); margin: 24px 0 8px; font-weight: 700; letter-spacing: 0.04em; }
.about p { font-size: 0.9rem; margin: 0 0 12px; line-height: 1.95; }
.seo-list { padding-left: 22px; margin: 0 0 8px; }
.seo-list li { margin-bottom: 6px; font-size: 0.9rem; }
.faq { margin: 0; }
.faq dt { font-weight: 700; color: var(--nvl-ink); margin-top: 14px; font-size: 0.9rem; }
.faq dd { margin: 5px 0 0; font-size: 0.88rem; line-height: 1.85; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 4px; }
.cta {
  display: inline-block; text-decoration: none; font-weight: 500; font-size: 0.9rem;
  letter-spacing: 0.03em;
  padding: 13px 22px; border-radius: var(--radius);
  background: var(--nvl-gradient); color: #fff; border: none;
  transition: opacity .15s ease;
}
.cta:hover { opacity: 0.9; }
.cta-alt { background: #fff; color: var(--nvl-blue); border: 1px solid var(--nvl-blue); }
.cta-alt:hover { background: var(--nvl-tint-blue); opacity: 1; }

/* ---------- フッター (ダーク面・白文字) ---------- */
footer {
  margin: 40px 0 0; padding: 32px 20px 44px;
  background: var(--nvl-bg-dark);
  font-size: 0.78rem; color: rgba(255, 255, 255, 0.7); line-height: 1.95;
  text-align: center;
}
footer a { color: var(--nvl-cyan); text-decoration: none; }
footer a:hover { text-decoration: underline; }
.foot-privacy { color: #fff; font-weight: 500; }

/* ---------- レスポンシブ (375px 崩れなし) ---------- */
@media (max-width: 560px) {
  body { font-size: 14.5px; }
  .hero { padding: 32px 16px 34px; }
  .layout { padding: 26px 14px 4px; gap: 18px; }
  .panel { padding: 20px 16px; }
  .field-row { grid-template-columns: 1fr; gap: 14px; }
  .summary-metrics { grid-template-columns: 1fr; }
  .tool-grid { grid-template-columns: 1fr; }
  .task-grid { grid-template-columns: 1fr; }
  .minutes-list { grid-template-columns: 1fr; }
  .metric-value { font-size: 23px; }
  .paper { padding: 18px 15px; }
  .paper .doc-title { letter-spacing: .22em; font-size: 19px; }
  .paper .doc-table th { width: 40%; white-space: normal; }
  .draft-actions { width: 100%; }
  .act-btn { flex: 1; text-align: center; }
  .about { margin: 26px 14px 0; padding: 20px 16px; }
}