/* ============================================================
   Eireya — CSS กลางระบบธีม (สว่าง / มืด)
   ทุกหน้าใช้คลาส semantic จากไฟล์นี้เท่านั้น ห้าม inline สี
   ============================================================ */

:root {
  --c-primary: #2c6e91;
  --c-primary-soft: #e3eef5;
  --c-accent: #e8a33d;
  --c-accent-soft: #faf0dc;
  --c-green: #3a8a5f;
  --c-green-soft: #e4f2ea;
  --c-purple: #7a5ba6;
  --c-purple-soft: #efe9f7;
  --c-rose: #c25e7a;
  --c-rose-soft: #f8e8ee;
  --c-bg: #faf8f4;
  --c-card: #ffffff;
  --c-text: #2d2a26;
  --c-muted: #6b6660;
  --c-border: #e4ded4;
  --c-hero-text: #ffffff;
  --c-table-stripe: #f6f3ec;
  --shadow-card: 0 2px 8px rgba(60, 50, 30, .05);
  --shadow-float: 0 6px 22px rgba(60, 50, 30, .08);
}

[data-theme="dark"] {
  --c-primary: #6db3d6;
  --c-primary-soft: #1d3340;
  --c-accent: #e8b25e;
  --c-accent-soft: #3a3020;
  --c-green: #6fbf94;
  --c-green-soft: #1e332a;
  --c-purple: #ab8fd6;
  --c-purple-soft: #2c2438;
  --c-rose: #d98ba1;
  --c-rose-soft: #38242b;
  --c-bg: #16181d;
  --c-card: #1f232b;
  --c-text: #e8e4dc;
  --c-muted: #9a948a;
  --c-border: #33383f;
  --c-hero-text: #ffffff;
  --c-table-stripe: #23272f;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, .3);
  --shadow-float: 0 6px 22px rgba(0, 0, 0, .4);
}

/* ---------- พื้นฐาน ---------- */
body.body-theme {
  font-family: 'Sarabun', sans-serif;
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.8;
  transition: background .3s, color .3s;
}
.text-muted-theme { color: var(--c-muted); }
a.link-theme { color: var(--c-primary); }

/* ---------- Navbar ---------- */
.navbar-theme {
  background: var(--c-card);
  border-bottom: 1px solid var(--c-border);
}
.navbar-theme .navbar-brand {
  color: var(--c-primary);
  font-weight: 700;
  font-size: 1.3rem;
}
.navbar-theme .nav-link { color: var(--c-text); }
.navbar-theme .nav-link:hover { color: var(--c-primary); }
.navbar-theme .nav-link.active {
  color: var(--c-primary);
  font-weight: 700;
  border-bottom: 2px solid var(--c-accent);
}
.navbar-theme .navbar-toggler { border-color: var(--c-border); color: var(--c-muted); }
.btn-ghost-theme {
  border: 1px solid var(--c-border);
  border-radius: 999px;
  background: transparent;
  color: var(--c-text);
  padding: 4px 14px;
  font-size: .9rem;
}
.btn-ghost-theme:hover { border-color: var(--c-primary); color: var(--c-primary); }

/* ---------- Hero ---------- */
.hero-theme {
  background: linear-gradient(135deg, #2c6e91 0%, #3a8a5f 55%, #e8a33d 100%);
  color: var(--c-hero-text);
  text-align: center;
  padding: 72px 20px 64px;
}
.hero-theme h1 { font-size: 2.6rem; font-weight: 700; margin-bottom: 10px; }
.hero-theme .hero-sub { font-size: 1.15rem; opacity: .95; max-width: 760px; margin: 0 auto; }
.hero-badge-theme {
  display: inline-block;
  background: rgba(255, 255, 255, .18);
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 999px;
  padding: 4px 18px;
  margin-bottom: 16px;
  font-size: .95rem;
  letter-spacing: 1px;
  color: var(--c-hero-text);
}
.btn-hero-theme {
  background: rgba(255, 255, 255, .92);
  color: #2c6e91;
  border: none;
  border-radius: 999px;
  padding: 10px 26px;
  font-weight: 700;
}
.btn-hero-theme:hover { background: #fff; color: #1d5273; }
.btn-hero-outline-theme {
  background: transparent;
  color: var(--c-hero-text);
  border: 1px solid rgba(255, 255, 255, .7);
  border-radius: 999px;
  padding: 10px 26px;
  font-weight: 700;
}
.btn-hero-outline-theme:hover { background: rgba(255, 255, 255, .15); color: var(--c-hero-text); }

/* ---------- Page header (หน้ารอง) ---------- */
.page-head-theme {
  background: var(--c-primary-soft);
  border-bottom: 1px solid var(--c-border);
  text-align: center;
  padding: 44px 20px 36px;
}
.page-head-theme h1 { color: var(--c-primary); font-size: 2rem; font-weight: 700; }
.page-head-theme p { max-width: 820px; margin: 8px auto 0; color: var(--c-text); }

/* ---------- Section ---------- */
.sec-title-theme {
  font-size: 1.5rem;
  color: var(--c-primary);
  border-bottom: 3px solid var(--c-accent);
  padding-bottom: 8px;
  margin-bottom: 20px;
  font-weight: 700;
}
.sub-title-theme { color: var(--c-green); font-size: 1.15rem; font-weight: 700; }

/* ---------- Card ---------- */
.card-theme {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 12px;
  padding: 18px 22px;
  box-shadow: var(--shadow-card);
  height: 100%;
}
.card-top-primary { border-top: 4px solid var(--c-primary); }
.card-top-green { border-top: 4px solid var(--c-green); }
.card-top-accent { border-top: 4px solid var(--c-accent); }
.card-top-purple { border-top: 4px solid var(--c-purple); }
.card-top-rose { border-top: 4px solid var(--c-rose); }
.card-icon-theme { font-size: 1.8rem; }

/* ---------- Callout ---------- */
.callout-theme {
  border-left: 5px solid var(--c-accent);
  background: var(--c-accent-soft);
  border-radius: 0 10px 10px 0;
  padding: 14px 18px;
}
.callout-theme.callout-blue { border-color: var(--c-primary); background: var(--c-primary-soft); }
.callout-theme.callout-green { border-color: var(--c-green); background: var(--c-green-soft); }
.callout-theme.callout-rose { border-color: var(--c-rose); background: var(--c-rose-soft); }

/* ---------- Quote ---------- */
.quote-theme {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-left: 5px solid var(--c-primary);
  border-radius: 0 12px 12px 0;
  padding: 22px 26px;
  font-size: 1.1rem;
  box-shadow: var(--shadow-card);
}
.quote-theme .quote-label {
  color: var(--c-accent);
  font-weight: 700;
  font-size: .9rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ---------- Table ---------- */
.table-theme { width: 100%; border-collapse: collapse; font-size: .95rem; background: var(--c-card); }
.table-theme th { background: var(--c-primary); color: #fff; padding: 10px 12px; text-align: left; }
.table-theme td { border: 1px solid var(--c-border); padding: 9px 12px; vertical-align: top; color: var(--c-text); }
.table-theme tr:nth-child(even) td { background: var(--c-table-stripe); }

/* ---------- Box diagram ---------- */
.bd-box-theme {
  border: 2px solid var(--c-primary);
  border-radius: 12px;
  padding: 14px 18px;
  text-align: center;
  background: var(--c-card);
  min-width: 190px;
}
.bd-box-theme .bd-icon { font-size: 1.8rem; display: block; }
.bd-box-theme b { color: var(--c-primary); }
.bd-arrow-theme { align-self: center; font-size: 1.5rem; color: var(--c-muted); }

/* ---------- List ---------- */
.list-theme { padding-left: 20px; margin-bottom: 0; }
.list-theme li { margin-bottom: 8px; }
.list-theme li::marker { color: var(--c-accent); }

/* ---------- Codex layers ---------- */
.layer-theme {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-left: 5px solid var(--c-purple);
  border-radius: 0 10px 10px 0;
  padding: 14px 18px;
}
.layer-theme .layer-rule {
  display: inline-block;
  background: var(--c-purple-soft);
  color: var(--c-purple);
  border-radius: 999px;
  padding: 1px 12px;
  font-size: .82rem;
  font-weight: 700;
}

/* ---------- Footer ---------- */
.footer-theme {
  border-top: 1px solid var(--c-border);
  color: var(--c-muted);
  text-align: center;
  padding: 30px 16px 20px;
  font-size: .9rem;
}
.footer-theme .footer-tagline { color: var(--c-primary); font-weight: 700; }

/* ---------- Symbol circle ---------- */
.sym-circle-theme {
  width: 120px;
  height: 120px;
  margin: 0 auto 12px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 45%, var(--c-accent-soft) 0%, var(--c-primary-soft) 70%);
  border: 3px solid var(--c-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
}