/* ===========================
   FIXLAG.ART / medic  common CSS
   - Top pages: monochrome
   - Chapter pages: themed by body.theme-*
   =========================== */

/* Base tokens */
:root{
  --ink:#232425; --ink-2:#4b5056; --bg:#fafafa; --card:#ffffff;
  --brand:#0d66d0; --brand-2:#0a4fa4; --accent:#009167;
  --ring:#dde6f3; --muted:#7b8794;

  /* Chapter theme colors */
  --color-severe:#c62828;   /* 激 */
  --color-glaring:#e65100;  /* 甚 */
  --color-disaster:#4e342e; /* 災 */
  --color-damage:#6a1b9a;   /* 害 */
  --color-revise:#2e7d32;   /* 復 */
  --color-oldies:#1565c0;   /* 旧 */
}

/* Reset-ish */
*{ box-sizing:border-box }
html,body{ height:100% }
body{
  margin:0; background:var(--bg); color:var(--ink); line-height:1.7;
  font-family:system-ui,-apple-system,"Hiragino Sans","Noto Sans JP",Segoe UI,Roboto,Arial,sans-serif;
}
img{ max-width:100%; display:block }
a{ color:var(--brand); text-decoration:none }
a:hover{ text-decoration:underline }
.container{ max-width:1080px; margin-inline:auto; padding:24px }

/* Header */
.site-header{
  background:linear-gradient(180deg,#0f172a 0%,#121826 100%);
  color:#fff; padding:24px; padding-bottom:56px;
  position:relative; overflow:hidden; border-bottom:1px solid #0f253d;
}
.site-title{ margin:0; font-size:28px; letter-spacing:.02em }
.site-sub{ margin:6px 0 0; color:#c9d4e3; font-size:14px }
.lang-switch{ position:absolute; right:16px; top:16px }
.lang-switch a{ color:#cfe1ff; font-weight:600 }

/* Header credit badge (author / narrator) */
.credit-badge{
  position:absolute; right:16px; bottom:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.25);
  color:#e8f0ff; font-size:12px; padding:6px 10px; border-radius:10px;
  backdrop-filter:saturate(120%) blur(6px); white-space:nowrap;
}
.credit-badge b{ color:#fff }
@media (max-width:520px){
  .credit-badge{ right:12px; bottom:10px; font-size:11px }
}

/* Chapter grid (top pages) */
.chapters{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:16px; margin-top:18px;
}
.chapter{
  display:flex; flex-direction:column; gap:4px;
  padding:16px 14px; border-radius:16px;
  background:var(--card); border:1px solid var(--ring);
  transition:transform .2s ease, box-shadow .2s ease;
}
.chapter:hover{ transform:translateY(-2px); box-shadow:0 6px 20px rgba(16,24,40,.08) }
.chapter .kanji{ font-size:40px; line-height:1; font-weight:800 }
.chapter .en{ font-size:13px; color:var(--muted); text-transform:uppercase; letter-spacing:.08em }
.chapter .desc{ font-size:14px; color:var(--ink-2) }

/* Prose */
.prose{ max-width:760px; margin-inline:auto }
.prose p{ margin:1em 0 }
.prose hr{ border:0; height:1px; background:var(--ring); margin:24px 0 }

/* Chapter nav buttons */
.chapter-nav{ display:flex; gap:10px; margin:26px 0 }
.chapter-nav a{
  flex:1; text-align:center; padding:12px 14px; border-radius:12px;
  background:var(--brand); color:#fff; font-weight:700; letter-spacing:.02em;
  border:1px solid #0b4e94; box-shadow:0 1px 0 rgba(255,255,255,.08) inset;
  transition:background .2s ease, transform .1s ease;
}
.chapter-nav a:hover{ background:var(--brand-2); text-decoration:none }
.chapter-nav a:active{ transform:translateY(1px) }
.chapter-nav a.disabled{ background:#c6cbd3; border-color:#b6bcc5; color:#fff; pointer-events:none }

/* Footer */
.site-footer{ padding:24px; text-align:center; color:var(--muted) }

/* =========================
   Monochrome top pages rule
   （bodyにtheme-*が無い＝共通ページ）
   ========================= */
body:not([class*="theme-"]) .chapters a.chapter{ color:var(--ink) }
body:not([class*="theme-"]) .chapter .kanji{ color:var(--ink) }
body:not([class*="theme-"]) .chapter .en{ color:var(--muted) }
body:not([class*="theme-"]) .chapter .desc{ color:var(--ink-2) }
body:not([class*="theme-"]) .chapters a.chapter:hover{
  color:var(--ink); text-decoration:none;
}

/* =========================
   Chapter theme overrides
   ========================= */
/* Header (gradient) */
.theme-severe  .site-header{ background:linear-gradient(180deg,#7f1d1d 0%, var(--color-severe) 100%) }
.theme-glaring .site-header{ background:linear-gradient(180deg,#8a3f00 0%, var(--color-glaring) 100%) }
.theme-disaster .site-header{ background:linear-gradient(180deg,#2d1f1a 0%, var(--color-disaster) 100%) }
.theme-damage  .site-header{ background:linear-gradient(180deg,#3a0f57 0%, var(--color-damage) 100%) }
.theme-revise  .site-header{ background:linear-gradient(180deg,#1f5b25 0%, var(--color-revise) 100%) }
.theme-oldies  .site-header{ background:linear-gradient(180deg,#0f2f57 0%, var(--color-oldies) 100%) }

/* Buttons */
.theme-severe  .chapter-nav a{ background:var(--color-severe);  border-color:#8d1f1f }
.theme-glaring .chapter-nav a{ background:var(--color-glaring); border-color:#a84700 }
.theme-disaster .chapter-nav a{ background:var(--color-disaster); border-color:#3b2923 }
.theme-damage  .chapter-nav a{ background:var(--color-damage);  border-color:#4b1374 }
.theme-revise  .chapter-nav a{ background:var(--color-revise);  border-color:#1f5b25 }
.theme-oldies  .chapter-nav a{ background:var(--color-oldies);  border-color:#0f4b92 }