/* FirnPlanner ダウンロードサイト共通スタイル (index.html / privacy.html) */

:root {
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Hiragino Sans", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;

  /* light (既定値。prefers-color-scheme / [data-theme] が上書きする) */
  --bg: #F0F4F9;
  --pane: #FFFFFF;
  --chrome: #E9EFF6;
  --border: #D1DCEB;
  --text: #17233F;
  --sub: #64748B;
  --amber: #F2A93B;
  --amber-text: #523100;
  --blue: #1B7FE3;
  --block: #FFC14D;
  --block-text: #3D2000;
  --done: #FFE4B8;
  --event: #E2E9F2;
  --event-text: #17233F;
  --wordmark: #1E2D4D;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #051424;
    --pane: #051424;
    --chrome: #0D1C2D;
    --border: #1C2B3C;
    --text: #D4E4FA;
    --sub: #C6C6CE;
    --amber: #FFB956;
    --amber-text: #452B00;
    --blue: #37A8E0;
    --block: #F2A73F;
    --block-text: #3D2000;
    --done: #3A3018;
    --event: #1C2B3C;
    --event-text: #D4E4FA;
    --wordmark: #F0F4F9;
  }
}

:root[data-theme="dark"] {
  --bg: #051424;
  --pane: #051424;
  --chrome: #0D1C2D;
  --border: #1C2B3C;
  --text: #D4E4FA;
  --sub: #C6C6CE;
  --amber: #FFB956;
  --amber-text: #452B00;
  --blue: #37A8E0;
  --block: #F2A73F;
  --block-text: #3D2000;
  --done: #3A3018;
  --event: #1C2B3C;
  --event-text: #D4E4FA;
  --wordmark: #F0F4F9;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  transition: background-color .4s ease, color .4s ease;
}

a { color: var(--wordmark); text-decoration: underline; text-underline-offset: 3px; transition: color .4s ease; }
a:hover { color: var(--amber-text); }

/* 言語の出し分け: 両方の lang="ja" / lang="en" 要素を常に置き、CSS で片方を隠す */
[lang="en"] { display: none; }
:root[data-lang="en"] [lang="ja"] { display: none; }
:root[data-lang="en"] [lang="en"] { display: revert; }

[lang="ja"] { word-break: keep-all; overflow-wrap: anywhere; }

/* テーマ切り替えの不透明色トランジション (半透明の重ねはしない) */
.t {
  transition: background-color .4s ease, color .4s ease, border-color .4s ease;
}

/* 言語切り替え時のフェード */
.copy {
  transition: opacity .18s ease;
}

/* ---------- レイアウト共通 ---------- */
.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 72px 56px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 0;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark { display: block; border-radius: 50%; box-shadow: 0 0 0 1px var(--border); }

.brand-name {
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--wordmark);
}

.toggles {
  display: flex;
  gap: 10px;
  align-items: center;
}

.toggle-group {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2px;
  background: var(--chrome);
}

.toggle-btn {
  font: inherit;
  font-size: 12px;
  border: 0;
  background: transparent;
  color: var(--sub);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color .4s ease, color .4s ease;
}

.toggle-btn.on {
  background: var(--pane);
  color: var(--text);
  font-weight: 600;
}

/* ---------- ヒーロー ---------- */
.hero {
  padding-top: 40px;
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 48px;
  align-items: center;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.hero-copy h1 {
  margin: 0;
  font-size: 38px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--wordmark);
  white-space: pre-line;
}

.hero-lede {
  margin: 0;
  font-size: 16px;
  color: var(--sub);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-top: 4px;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--amber);
  color: var(--amber-text);
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 15px;
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  font-weight: 600;
  padding: 12px 24px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 15px;
  text-decoration: none;
}

.hero-meta {
  margin: 0;
  font-size: 12px;
  color: var(--sub);
}

/* ---------- ヒーローのウィンドウ・モック ---------- */
.mock-window-wrap {
  overflow-x: auto;
  min-width: 0; /* グリッドの自動最小サイズが子要素 (min-width:520px) に引きずられて
                   ページ全体が横に広がらないようにする */
}

.mock-window {
  background: var(--pane);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(5, 20, 36, .14);
  min-width: 520px;
  max-width: 620px;
  width: 100%;
}

.mock-titlebar {
  height: 28px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  background: var(--chrome);
  border-bottom: 1px solid var(--border);
}

.mock-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }

.mock-body { display: flex; height: 360px; }

.mock-sidebar {
  width: 44px;
  background: var(--chrome);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  flex-shrink: 0;
}

.mock-sidebar i { display: block; width: 16px; height: 16px; border-radius: 4px; background: var(--border); }
.mock-sidebar i.on { background: var(--amber); }

.mock-editor {
  width: 260px;
  flex-shrink: 0;
  padding: 14px 16px;
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--text);
  overflow: hidden;
}

.mock-editor-head {
  font-weight: 600;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.mock-editor-head span:last-child { color: var(--sub); font-weight: 400; }

.mock-editor-tag { color: var(--sub); font-size: 11px; margin-bottom: 8px; }

.mock-line { display: flex; align-items: center; gap: 8px; white-space: nowrap; }

.mock-checkbox { width: 11px; height: 11px; border: 1.5px solid var(--sub); border-radius: 2px; flex-shrink: 0; }
.mock-checkbox.checked { background: var(--amber); border-color: var(--amber); }

.mock-line.done { color: var(--sub); text-decoration: line-through; }
.mock-line .at { color: var(--sub); font-family: var(--mono); font-size: 11px; }
.mock-line.cont { padding-left: 19px; color: var(--text); }
.mock-line.note { color: var(--sub); }

.mock-timeline {
  position: relative;
  border-left: 1px solid var(--border);
  background: var(--pane);
  flex: 1;
  min-width: 200px;
}

.mock-hour {
  position: absolute;
  left: 0;
  right: 0;
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--sub);
  padding: 2px 0 0 6px;
  font-family: var(--mono);
}

.mock-block {
  position: absolute;
  left: 78px;
  right: 12px;
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--block-text);
  background: var(--block);
  overflow: hidden;
}

.mock-block.done { background: var(--done); color: var(--sub); font-weight: 500; }

.mock-event {
  position: absolute;
  left: 34px;
  width: 40px;
  border-radius: 4px;
  background: var(--event);
  color: var(--event-text);
  font-size: 9px;
  padding: 4px;
  line-height: 1.3;
  border: 1px solid var(--border);
}

.mock-now { position: absolute; left: 30px; right: 0; border-top: 2px solid var(--blue); }
.mock-now::before {
  content: "";
  position: absolute;
  left: -5px;
  top: -5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
}

/* ---------- 機能グリッド ---------- */
.features {
  margin-top: 72px;
  padding: 40px;
  background: var(--pane);
  border: 1px solid var(--border);
  border-radius: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px 48px;
}

.feature { display: flex; gap: 16px; min-width: 0; }
.feature-bar { width: 6px; border-radius: 3px; flex-shrink: 0; }
.feature-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.feature-desc { font-size: 14px; color: var(--sub); line-height: 1.7; }

/* ---------- 1日の締め / Markdown ファイルのモック ---------- */
.split {
  margin-top: 72px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.split-col { display: flex; flex-direction: column; gap: 12px; min-width: 0; }

.split-caption {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--sub);
}

.split-caption.mono { font-family: var(--mono); letter-spacing: normal; }

.sheet-mock {
  background: var(--pane);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  font-size: 12.5px;
  color: var(--text);
}

.sheet-title { font-size: 14px; font-weight: 600; }

.sheet-section {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--sub);
  margin: 12px 0 6px;
}

.sheet-row { display: flex; align-items: center; gap: 8px; padding: 6px 0; }
.sheet-row .spacer { flex: 1; }

.chip { font-size: 11px; color: var(--sub); border: 1px solid var(--border); border-radius: 6px; padding: 2px 8px; }

.sheet-divider { border-top: 1px solid var(--border); margin: 8px 0 2px; }

.note-line { display: flex; gap: 8px; color: var(--sub); padding: 4px 0; }
.note-line b { color: var(--text); font-weight: 400; }

.sheet-footer { display: flex; justify-content: flex-end; margin-top: 14px; }

.sheet-btn {
  display: inline-block;
  background: var(--amber);
  color: var(--amber-text);
  font-weight: 600;
  font-size: 12px;
  padding: 8px 14px;
  border-radius: 6px;
}

.md-mock {
  background: var(--pane);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 18px;
  height: 100%;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--text);
  overflow-x: auto;
}

.md-dim { color: var(--sub); }

/* ---------- β版の案内 ---------- */
.beta-box {
  margin-top: 64px;
  padding: 24px 28px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--chrome);
}

.beta-box h2 { font-size: 15px; font-weight: 600; margin: 0 0 10px; }
.beta-box p { margin: 0 0 10px; font-size: 13px; color: var(--sub); line-height: 1.7; }
.beta-box p:last-child { margin-bottom: 0; }

/* ---------- フッター ---------- */
.site-footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--sub);
}

.site-footer a { color: var(--sub); }

/* ---------- プライバシーポリシー本文 ---------- */
.policy {
  padding-top: 24px;
}

.policy h1 {
  margin: 0 0 8px;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--wordmark);
}

.policy .lede { margin: 0 0 32px; font-size: 13px; color: var(--sub); }

.policy h2 {
  margin: 32px 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--wordmark);
}

.policy p, .policy li { font-size: 14px; line-height: 1.85; color: var(--text); }
.policy p { margin: 0 0 14px; }
.policy ol, .policy ul { margin: 0 0 14px; padding-left: 22px; }
.policy li { margin-bottom: 8px; }
.policy code {
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--chrome);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ---------- レスポンシブ: 720px 以下は 1 カラム ---------- */
@media (max-width: 720px) {
  .page { padding: 0 20px 40px; }

  .hero { grid-template-columns: 1fr; gap: 32px; }
  .hero-copy h1 { font-size: 30px; }

  .features { grid-template-columns: 1fr; padding: 24px; margin-top: 48px; gap: 28px; }
  .split { grid-template-columns: 1fr; margin-top: 48px; gap: 32px; }

  .beta-box { margin-top: 40px; padding: 20px; }
  .site-footer { margin-top: 36px; }

  .policy { padding-top: 12px; }
  .policy h1 { font-size: 24px; }
}