/*
Theme Name: ふり〜つ〜る (Furitoru)
Theme URI: https://run-digital.com/
Author: run-digital / KOTA
Description: 無料の単位変換ツール集。データ駆動の仮想ページで数値ごとのSEOページを生成する単機能テーマ。デザインはA-3ソフトテック。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
Text Domain: furitoru
*/

/* ============================================================
   Design tokens — A-3 Soft Tech
   ============================================================ */
:root {
  --ink: #1B2535;
  --ink-soft: #67738A;
  --bg: #F7F9FC;
  --surface: #FFFFFF;
  --hairline: #E4E9F0;
  --grid-line: #E9EEF5;
  --primary: #5B9DF9;
  --primary-dark: #1F5FB8;
  --primary-soft: #E8F1FE;
  --radius-sm: 8px;
  --radius: 10px;
  --radius-lg: 12px;
  --wrap: 1040px;
  --font-disp: 'Space Grotesk', 'Noto Sans JP', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --font-body: 'Noto Sans JP', sans-serif;
}

/* ============================================================
   Base
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body.ft-body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }

.ft-wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.ft-disp { font-family: var(--font-disp); }
.ft-mono { font-family: var(--font-mono); }
.ft-muted { color: var(--ink-soft); }
.ft-main { display: block; }

.ft-grid-bg {
  background-image:
    repeating-linear-gradient(var(--grid-line) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(90deg, var(--grid-line) 0 1px, transparent 1px 26px);
}

/* ============================================================
   Header / nav
   ============================================================ */
.ft-nav { background: var(--surface); border-bottom: 1px solid var(--hairline); }
.ft-nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.ft-brand { display: flex; align-items: center; gap: 10px; }
.ft-brand-mark {
  width: 30px; height: 30px; border-radius: 9px; background: var(--primary-soft);
  display: flex; align-items: center; justify-content: center;
}
.ft-brand-mark i { font-size: 16px; color: var(--primary); }
.ft-brand-name { font-family: var(--font-body); font-size: 18px; font-weight: 700; letter-spacing: .02em; }
.ft-nav-links { display: flex; align-items: center; gap: 18px; }
.ft-nav-links a { color: var(--ink-soft); font-size: 13px; }
.ft-nav-links a:hover { color: var(--primary); }
.ft-nav-search i { font-size: 17px; }

/* ============================================================
   Buttons / pills
   ============================================================ */
.ft-btn {
  display: inline-block; font-family: var(--font-disp); font-size: 14px; font-weight: 500;
  padding: 11px 22px; border-radius: 9px; cursor: pointer; border: none;
}
.ft-btn-primary { background: var(--primary); color: #fff; }
.ft-btn-primary:hover { background: var(--primary-dark); }
.ft-pill { font-family: var(--font-mono); font-size: 10px; border-radius: 5px; padding: 3px 9px; }

/* ============================================================
   Hero
   ============================================================ */
.ft-hero { padding: 48px 0; }
.ft-hero-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: center; }
.ft-hero-tags { display: flex; gap: 6px; margin-bottom: 16px; }
.ft-hero-h1 { font-size: 38px; font-weight: 700; line-height: 1.25; margin-bottom: 14px; }
.ft-hero-sub { font-size: 14px; color: var(--ink-soft); line-height: 1.9; margin-bottom: 22px; }

.ft-hero-card {
  background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 16px;
}
.ft-hero-card-foot { font-size: 11px; color: var(--ink-soft); text-align: center; margin-top: 12px; }

/* Converter component (shared) */
.ft-convert-top { display: flex; align-items: center; gap: 8px; }
.ft-convert-input {
  flex: 1; font-family: var(--font-mono); font-size: 20px; font-weight: 500; text-align: right;
  border: 1px solid var(--hairline); border-radius: var(--radius-sm); padding: 9px 12px; color: var(--ink);
  background: #fff; width: 100%;
}
.ft-convert-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
.ft-convert-unit { font-size: 14px; color: var(--ink-soft); min-width: 46px; }
.ft-convert-arrow { text-align: center; color: var(--primary); margin: 6px 0; }
.ft-convert-arrow i { font-size: 17px; }
.ft-convert-result {
  display: flex; align-items: center; gap: 8px; background: var(--primary-soft);
  border-radius: var(--radius); padding: 10px 14px;
}
.ft-convert-out { flex: 1; text-align: right; font-size: 26px; font-weight: 500; color: var(--primary-dark); }

/* ============================================================
   Sections
   ============================================================ */
.ft-section { padding: 30px 0; background: var(--surface); border-top: 1px solid var(--hairline); }
.ft-section-alt { background: var(--bg); }
.ft-section-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; }
.ft-section-head .ft-disp { font-size: 16px; font-weight: 700; }
.ft-h2 { font-size: 18px; font-weight: 700; }

/* Category grid */
.ft-cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 8px; }
.ft-cat-card { display: flex; align-items: center; gap: 10px; padding: 13px; border-radius: var(--radius); }
.ft-cat-card:hover { transform: translateY(-1px); }
.ft-cat-icon {
  width: 32px; height: 32px; border-radius: 8px; background: rgba(255, 255, 255, .8);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.ft-cat-icon i { font-size: 16px; }
.ft-cat-body { display: flex; flex-direction: column; }
.ft-cat-name { font-size: 13px; font-weight: 500; }
.ft-cat-count { font-size: 10px; opacity: .75; }

/* Two-column ranking / new */
.ft-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.ft-col-head { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.ft-col-head i { color: var(--primary); font-size: 16px; }
.ft-rank { list-style: none; }
.ft-rank li a {
  display: flex; align-items: center; gap: 11px; padding: 10px 0; border-bottom: 1px solid var(--hairline);
}
.ft-rank-num { font-size: 14px; font-weight: 500; color: var(--primary); width: 22px; }
.ft-rank-ico { color: var(--primary); display: flex; }
.ft-rank-ico i { font-size: 14px; }
.ft-rank-name { flex: 1; font-size: 13px; }
.ft-rank-cat { font-size: 10px; }

/* ============================================================
   Tool page
   ============================================================ */
.ft-tool { padding: 22px 20px 48px; }
.ft-breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 11px; color: var(--ink-soft); margin-bottom: 16px; }
.ft-breadcrumb a:hover { color: var(--primary); }

.ft-tool-head { border-radius: var(--radius-lg); padding: 24px; margin-bottom: 22px; }
.ft-tool-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500; margin-bottom: 10px; }
.ft-tool-h1 { font-size: 26px; font-weight: 700; line-height: 1.45; }
.ft-tool-answer {
  margin-top: 16px; font-size: 22px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.ft-tool-answer i { font-size: 18px; color: var(--ink-soft); }

.ft-tool-convert { max-width: 420px; margin: 0 auto 18px; }
.ft-convert-lg .ft-convert-input { font-size: 24px; }
.ft-convert-lg .ft-convert-out { font-size: 30px; }
.ft-note { font-size: 12px; margin-top: 10px; text-align: center; }

.ft-trivia {
  background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius);
  padding: 14px 16px; font-size: 14px; margin-bottom: 26px;
}

/* Quick table */
.ft-quick { margin-bottom: 26px; }
.ft-quick .ft-h2 { margin-bottom: 12px; }
.ft-quick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 6px; }
.ft-quick-cell {
  display: flex; align-items: center; justify-content: space-between; gap: 6px;
  background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-sm); padding: 9px 11px;
}
.ft-quick-cell:hover { border-color: var(--primary); }
.ft-quick-cell.is-now { font-weight: 500; }
.ft-quick-from { font-size: 12px; color: var(--ink-soft); }
.ft-quick-to { font-size: 13px; font-weight: 500; }

/* Inverse link */
.ft-inverse {
  display: flex; align-items: center; gap: 10px; background: var(--primary-soft); color: var(--primary-dark);
  border-radius: var(--radius); padding: 13px 16px; font-size: 14px; margin-bottom: 26px;
}
.ft-inverse i:last-child { margin-left: auto; }

/* Related */
.ft-related .ft-h2 { margin-bottom: 12px; }
.ft-related-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.ft-related-chip {
  font-size: 13px; background: var(--surface); border: 1px solid var(--hairline);
  border-radius: 20px; padding: 7px 15px;
}
.ft-related-chip:hover { border-color: var(--primary); color: var(--primary-dark); }

/* ============================================================
   List page
   ============================================================ */
.ft-list { padding: 22px 20px 48px; }
.ft-list-head { margin-bottom: 24px; }
.ft-list-h1 { font-size: 26px; font-weight: 700; margin-bottom: 4px; }
.ft-list-cat { margin-bottom: 28px; scroll-margin-top: 80px; }
.ft-list-cat-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.ft-list-cat-head .ft-h2 { font-size: 17px; }
.ft-list-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 6px; }
.ft-list-chip {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--surface); border: 1px solid var(--hairline); border-radius: var(--radius-sm);
  padding: 10px 13px; font-size: 13px;
}
.ft-list-chip:hover { border-color: var(--primary); }
.ft-list-chip i { font-size: 14px; color: var(--primary); }

/* ============================================================
   Fallback / footer
   ============================================================ */
.ft-fallback { padding: 60px 20px; text-align: center; }
.ft-fallback h1 { font-size: 30px; font-weight: 700; margin-bottom: 8px; }
.ft-fallback p { margin-bottom: 20px; }

.ft-footer { background: var(--surface); border-top: 1px solid var(--hairline); padding: 18px 0; margin-top: 12px; }
.ft-footer-inner { display: flex; align-items: center; justify-content: space-between; }
.ft-footer-brand { font-size: 13px; color: var(--ink-soft); }
.ft-footer-copy { font-family: var(--font-mono); font-size: 10px; color: var(--ink-soft); }

/* Auto content sections */
.ft-content { margin: 0 0 26px; }
.ft-content .ft-h2 { margin-bottom: 12px; }
.ft-content p { font-size: 14px; line-height: 1.9; margin-bottom: 10px; }
.ft-formula {
  font-family: var(--font-mono); background: var(--surface);
  border: 1px solid var(--hairline); border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 14px; overflow-x: auto;
}
.ft-content-table { width: 100%; border-collapse: collapse; }
.ft-content-table td { padding: 9px 12px; border-bottom: 1px solid var(--hairline); font-size: 14px; }
.ft-content-table td:first-child { color: var(--ink-soft); }
.ft-content-table td:last-child { text-align: right; font-weight: 500; }
.ft-scenes { margin: 0; }
.ft-scenes dt { font-weight: 500; font-size: 14px; margin-top: 10px; }
.ft-scenes dd { margin: 2px 0 0; font-size: 14px; color: var(--ink-soft); line-height: 1.8; }
.ft-content-note {
  background: var(--primary-soft); border-radius: var(--radius-sm);
  padding: 12px 14px; font-size: 13px; color: var(--primary-dark); margin-top: 14px;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 720px) {
  .ft-hero-grid { grid-template-columns: 1fr; }
  .ft-hero-h1 { font-size: 30px; }
  .ft-two-col { grid-template-columns: 1fr; gap: 18px; }
  .ft-tool-h1 { font-size: 21px; }
  .ft-nav-links { gap: 14px; }
}