/* =============================================================
 *  aoyagi.dev — styles
 *  reference.html の見た目を忠実に再現するスタイルシート。
 *  値の正は reference.html / DESIGN_SPEC.md。
 * ============================================================= */

/* ---- design tokens --------------------------------------------------- */
:root {
  --navy:    #2a3b6b; /* 主役。タイトルバー / 見出し / アクティブナビ */
  --navy-dk: #1d2b52; /* 紺グラデの濃い側 / 枠線 */
  --verm:    #b5482f; /* 朱。最小限のアクセント */
  --link:    #13439e; /* リンク文字 */
  --ink:     #1b1b1b; /* 本文 */
  --paper:   #ffffff; /* フレーム内地 */
  --frame:   #c0c0c0; /* ベベル面 (ボタン / フッター) */
  --desk:    #8f969d; /* デスクトップ背景グレー */

  --mono: 'VT323', ui-monospace, monospace;
  --jp:   'Hiragino Kaku Gothic ProN', 'MS PGothic', 'Yu Gothic', sans-serif;
  --min:  'Hiragino Mincho ProN', 'MS PMincho', 'Yu Mincho', serif;
}

/* ---- reset ----------------------------------------------------------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--jp);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.85;
  background: var(--desk);
  background-image: repeating-linear-gradient(45deg, rgba(255,255,255,.04) 0 2px, transparent 2px 5px);
  min-height: 100vh;
  padding: 18px;
}

a { color: var(--link); }

/* blink (現状未使用だがレトロ表現用に温存) */
@keyframes blink { 50% { opacity: 0; } }
.blink { animation: blink 1.1s steps(1) infinite; }
@media (prefers-reduced-motion: reduce) {
  .blink { animation: none; }
}

/* ---- site container -------------------------------------------------- */
.site { max-width: 1080px; margin: 0 auto; }

/* ---- marquee banner -------------------------------------------------- */
.topbar {
  background: #e7e0cd;
  color: var(--navy);
  border: 2px outset #f2ecdb;
  font-size: 13px;
  padding: 7px 0;
  letter-spacing: .02em;
}
.topbar marquee { font-weight: 700; }
.topbar .static-marquee { /* reduced-motion 時のフォールバック */
  display: block;
  font-weight: 700;
  text-align: center;
  padding: 0 12px;
}

/* ---- title bar ------------------------------------------------------- */
.titlebar {
  background: linear-gradient(var(--navy), var(--navy-dk));
  color: #fff;
  border: 2px outset #97a4cf;
  border-top: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  gap: 16px;
  flex-wrap: wrap;
}
.titlebar h1 {
  font-family: var(--min);
  font-size: 30px;
  letter-spacing: .12em;
  font-weight: 700;
  line-height: 1.1;
}
.titlebar .sub {
  font-family: var(--mono);
  font-size: 17px;
  letter-spacing: .22em;
  color: #b9c4e6;
}

/* ---- columns (nav + main) ------------------------------------------- */
.cols {
  display: grid;
  grid-template-columns: 218px 1fr;
  gap: 10px;
  margin-top: 10px;
}
.frame {
  background: var(--paper);
  border: 2px inset #d6d6d6;
  position: relative;
}

/* ---- nav frame ------------------------------------------------------- */
.nav {
  padding: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.nav h4 {
  font-size: 13px;
  background: linear-gradient(var(--navy), var(--navy-dk));
  color: #fff;
  padding: 6px 12px;
  letter-spacing: .08em;
}
.nav ul { list-style: none; padding: 10px 12px 4px; }
.nav li { margin-bottom: 2px; }
.nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--link);
  text-decoration: none;
  padding: 5px 8px;
  border: 1px solid transparent;
  cursor: pointer;
}
.nav a::before {
  content: "»";
  color: var(--verm);
  font-weight: 700;
}
.nav a:hover,
.nav a:focus-visible {
  background: #eef2fb;
  border: 1px solid #c3d0ec;
  text-decoration: underline;
  outline: none;
}
.nav a.active {
  background: var(--navy);
  color: #fff;
  border: 1px solid var(--navy-dk);
  text-decoration: none;
}
.nav a.active::before { color: #ffd86b; }

/* ---- counter --------------------------------------------------------- */
.counter {
  margin: auto 12px 6px;
  border: 2px groove #cfcfcf;
  background: #f6f6f2;
  padding: 10px 8px;
  text-align: center;
  font-size: 12px;
  color: #555;
  line-height: 1.7;
  white-space: nowrap;
}
.counter .num {
  font-family: var(--mono);
  font-size: 18px;
  background: #111;
  color: #41e06a;
  padding: 2px 7px;
  letter-spacing: .14em;
  display: inline-block;
  margin: 5px 0;
  border: 1px solid #000;
}

/* ---- main frame ------------------------------------------------------ */
.main { min-height: 520px; } /* nav と並んだ時の最低高さ。本文が長ければ自動で伸びる */
.main-scroll {
  padding: 20px 24px;
}

.page { display: none; }
.page.show { display: block; }

/* ---- section headings ----------------------------------------------- */
h2.sec {
  font-size: 17px;
  color: var(--navy);
  border-bottom: 2px solid var(--navy);
  padding-bottom: 5px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
h2.sec .bul { color: var(--verm); }
h2.sec.mt { margin-top: 24px; }

p { margin-bottom: 12px; }
.lead { font-size: 15px; }

/* ---- news list ------------------------------------------------------- */
.news {
  list-style: none;
  border: 1px solid #d8d8d8;
  background: #fbfbf7;
}
.news li {
  display: flex;
  gap: 12px;
  padding: 9px 12px;
  border-bottom: 1px dotted #ccc;
  align-items: baseline;
  flex-wrap: wrap;
}
.news li:last-child { border-bottom: none; }
.news .date {
  font-family: var(--mono);
  font-size: 15px;
  color: #777;
  white-space: nowrap;
}

/* ---- content cards --------------------------------------------------- */
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 6px;
}
.card {
  border: 2px ridge #d0d0d0;
  background: #fbfbf7;
  padding: 12px 14px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  cursor: pointer;
}
.card:hover,
.card:focus-visible {
  background: #eef2fb;
  border-color: #c3d0ec;
  outline: none;
}
.card .ttl {
  font-weight: 700;
  font-size: 15px;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 8px;
}
.card .ttl .arr { margin-left: auto; color: var(--verm); }
.card .ttl .muted {
  font-weight: normal;
  font-size: 13px;
  color: #888;
  margin-left: 6px;
}
.card .kind {
  font-family: var(--mono);
  font-size: 13px;
  color: #888;
  letter-spacing: .1em;
}
.card p { font-size: 13px; color: #555; margin: 6px 0 0; }

/* ---- profile table --------------------------------------------------- */
.facts {
  border: 1px solid #d8d8d8;
  background: #fbfbf7;
  margin: 4px 0 8px;
}
.facts div {
  display: flex;
  border-bottom: 1px dotted #ccc;
}
.facts div:last-child { border-bottom: none; }
.facts dt {
  width: 120px;
  background: #eef0f6;
  color: var(--navy);
  font-weight: 700;
  padding: 7px 12px;
  border-right: 1px dotted #ccc;
  flex: none;
}
.facts dd { padding: 7px 12px; }

/* ---- gotobtn (Win95風ベベルボタン) ---------------------------------- */
.gotobtn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  background: var(--frame);
  border-top: 2px solid #fff;
  border-left: 2px solid #fff;
  border-right: 2px solid #404040;
  border-bottom: 2px solid #404040;
  padding: 8px 18px;
  font-family: var(--jp);
  font-size: 14px;
  color: #111;
  text-decoration: none;
  cursor: pointer;
}
.gotobtn:active {
  border-top: 2px solid #404040;
  border-left: 2px solid #404040;
  border-right: 2px solid #fff;
  border-bottom: 2px solid #fff;
}
.gotobtn:focus-visible {
  outline: 2px solid var(--navy);
  outline-offset: 2px;
}

/* ---- friend banners -------------------------------------------------- */
.banners {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 12px;
}
.banner {
  display: flex;
  align-items: stretch;
  width: 200px;
  border: 2px solid #111;
  background: #fff;
  text-decoration: none;
  color: #111;
  transition: transform .15s;
}
.banner:hover,
.banner:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 #111;
  outline: none;
}
.banner .m {
  width: 44px;
  flex: none;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 24px;
  color: #fff;
  border-right: 2px solid #111;
}
.banner.c1 .m { background: #2a6b4f; } /* 緑 */
.banner.c2 .m { background: #2a3b6b; } /* 紺 */
.banner.c3 .m { background: #6b2a55; } /* 紫 */
.banner .b { padding: 6px 10px; }
.banner .b b {
  font-family: var(--mono);
  font-size: 18px;
  letter-spacing: .04em;
  display: block;
  line-height: 1.1;
}
.banner .b span { font-size: 11px; color: #666; }

/* reduced-motion でホバー時の transform を切る */
@media (prefers-reduced-motion: reduce) {
  .banner { transition: none; }
  .banner:hover,
  .banner:focus-visible {
    transform: none;
    box-shadow: 2px 2px 0 #111;
  }
}

/* ---- note (補足ブロック) -------------------------------------------- */
.note {
  font-size: 13px;
  color: #666;
  background: #f4f4ef;
  border: 1px dashed #bbb;
  padding: 10px 12px;
  margin-top: 12px;
}
.note code {
  background: #fff;
  padding: 0 4px;
  border: 1px solid #ddd;
  font-family: var(--mono);
  font-size: 14px;
}

/* ---- footer ---------------------------------------------------------- */
.foot {
  margin-top: 10px;
  background: var(--frame);
  border: 2px outset #e0e0e0;
  padding: 10px 14px;
  font-size: 12px;
  color: #333;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.foot .mono {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: .08em;
}

/* ---- responsive ------------------------------------------------------ */
@media (max-width: 720px) {
  .cols { grid-template-columns: 1fr; }
  .nav { display: block; height: auto; }
  .nav ul { display: flex; flex-wrap: wrap; gap: 4px; }
  .nav li { margin: 0; }
  .counter { margin: 14px 12px; }
  .cards { grid-template-columns: 1fr; }
  .titlebar h1 { font-size: 24px; }
}