@charset "utf-8";
/* CSS Document */
/* ═══════════════════════════════════════
   RESET & BASE
═══════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background-color: #F8F3E7;
  color: #2F3437;
  font-size: 16px;
}

a { text-decoration: none; color: inherit; }

/* ═══════════════════════════════════════
   BREADCRUMB
═══════════════════════════════════════ */
.breadcrumb {
  background-color: #e8e2d6;
  padding: 10px 24px;
  font-size: 0.85rem;
  color: #555;
  border-bottom: 1px solid #d5cfc5;
}
.breadcrumb a { color: #1D3557; font-weight: 600; }
.breadcrumb a:hover { text-decoration: underline; }
.bc-sep { margin: 0 6px; color: #aaa; }
.bc-current { color: #2F3437; font-weight: 600; }

/* ═══════════════════════════════════════
   PAGE WRAPPER
═══════════════════════════════════════ */
.page-wrapper { max-width: 960px; margin: 0 auto; padding: 24px 20px 40px; }

/* ═══════════════════════════════════════
   PAGE TITLE BLOCK
═══════════════════════════════════════ */
.page-title-block {
  background: linear-gradient(135deg, #1D3557 0%, #2a4d73 100%);
  color: #F8F3E7;
  border-radius: 8px;
  padding: 36px 32px;
  margin-bottom: 28px;
}
.page-title-label {
  font-size: 0.8rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: #F5B041; margin-bottom: 8px;
}
.page-title-main { font-size: 2rem; font-weight: 700; line-height: 1.2; margin-bottom: 12px; }
.page-title-sub  { font-size: 1rem; opacity: 0.85; line-height: 1.6; max-width: 680px; margin-bottom: 16px; }
.title-pills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.title-pill {
  background-color: rgba(255,255,255,0.15); color: #F8F3E7;
  font-size: 0.75rem; font-weight: 600; padding: 4px 12px;
  border-radius: 20px; border: 1px solid rgba(255,255,255,0.3);
}

/* ═══════════════════════════════════════
   ARTICLE / SECTION
═══════════════════════════════════════ */
.section-art-txt {
  margin: 0 0 28px 0; padding: 28px 28px 24px;
  background-color: #ffffff; border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.section-art-title {
  font-size: 1.2rem; font-weight: 700; color: #1D3557;
  border-left: 4px solid #E63946; padding-left: 12px;
  margin-bottom: 20px; line-height: 1.3;
}
.section-art-txt > p { font-size: 1rem; color: #2F3437; line-height: 1.6; margin-bottom: 16px; }
.sub-heading {
  font-size: 1rem; font-weight: 700; color: #1D3557;
  margin: 24px 0 12px; padding-bottom: 4px;
  border-bottom: 1px solid #e0dbd2;
}

/* ═══════════════════════════════════════
   DEFINITION CARDS
═══════════════════════════════════════ */
.definition-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-top: 8px; margin-bottom: 24px;
}
.def-card { border-radius: 8px; padding: 20px 18px; border-top: 5px solid transparent; }
.def-card--blue   { background: #EBF2FA; border-top-color: #1D3557; }
.def-card--gold   { background: #FEF9EC; border-top-color: #F5B041; }
.def-card--slate  { background: #ECEFF1; border-top-color: #455A64; }
.def-card--red    { background: #FEF0F0; border-top-color: #E63946; }
.def-card--green  { background: #F0F7F4; border-top-color: #2E7D52; }
.def-card-icon { font-size: 1.8rem; margin-bottom: 8px; }
.def-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: #1D3557; }
.def-card p  { font-size: 0.9rem; line-height: 1.55; color: #3a3f42; }

/* ═══════════════════════════════════════
   REGULATION BLOCKS
═══════════════════════════════════════ */
.reg-block { border: 1px solid #e0dbd2; border-radius: 8px; overflow: hidden; margin-bottom: 20px; }
.reg-block-header { display: flex; align-items: center; gap: 12px; padding: 14px 18px; }
.reg-hdr--blue  { background-color: #1D3557; color: #F8F3E7; }
.reg-hdr--gold  { background-color: #D4890A; color: #fff; }
.reg-hdr--slate { background-color: #455A64; color: #F8F3E7; }
.reg-hdr--red   { background-color: #E63946; color: #fff; }
.reg-icon { font-size: 1.3rem; flex-shrink: 0; }
.reg-block-header h4 { font-size: 1rem; font-weight: 700; flex: 1; line-height: 1.3; }
.reg-block-body { padding: 18px 20px; background-color: #fdfcfa; }
.reg-block-body p { font-size: 0.95rem; line-height: 1.6; color: #2F3437; margin-bottom: 12px; }
.reg-block-body p:last-child { margin-bottom: 0; }

/* ═══════════════════════════════════════
   CHECK LIST
═══════════════════════════════════════ */
.check-list { list-style: none; margin: 8px 0 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.check-list li { font-size: 0.95rem; color: #2F3437; padding-left: 24px; position: relative; line-height: 1.5; }
.check-list li::before { content: '✓'; position: absolute; left: 0; color: #2E7D52; font-weight: 700; }

/* ═══════════════════════════════════════
   CALLOUT
═══════════════════════════════════════ */
.callout { display: flex; gap: 14px; align-items: flex-start; border-radius: 8px; padding: 16px 18px; margin-top: 16px; }
.callout--tip  { background-color: #EBF2FA; border-left: 4px solid #1D3557; }
.callout--warn { background-color: #FEF9EC; border-left: 4px solid #D4890A; }
.callout--red  { background-color: #FEF0F0; border-left: 4px solid #E63946; }
.callout--warn strong { color: #8B5E00; }
.callout--red  strong { color: #B71C1C; }
.callout-icon  { font-size: 1.4rem; flex-shrink: 0; }
.callout strong { display: block; font-size: 0.9rem; color: #1D3557; margin-bottom: 4px; }
.callout p { font-size: 0.9rem; line-height: 1.55; color: #2F3437; margin: 0; }


/* QUIZ NAV */
.quiz-nav-container {
  text-align: center;
  margin-bottom: 0.75rem;
}

.quiz-nav {
  display: flex;
  justify-content: center;
}

.quiz-nav-btn {
  display: inline-block;
  background-color: #E63946;
  color: #F8F3E7;
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 12px rgba(29, 53, 87, 0.18);
  border: 2px solid transparent;
}

.quiz-nav-btn:hover {
  background-color: #C92F3B;
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(29, 53, 87, 0.24);
}

.quiz-nav-btn:focus {
  outline: none;
  border-color: #F1C40F;
}

/* FOOTER NAV */
.main-footer-nav {
  background-color: #1D3557; display: flex; justify-content: center;
  gap: 12px; padding: 16px 24px; flex-wrap: wrap;
}
.main-footer-nav-btn {
  display: inline-block; background-color: #F5B041; color: #2F3437;
  font-weight: 700; font-size: 0.9rem; padding: 10px 24px;
  border-radius: 4px; transition: background-color 0.2s; text-decoration: none;
}
.main-footer-nav-btn:hover { background-color: #F8C471; }

/* ═══════════════════════════════════════
   SITE FOOTER
═══════════════════════════════════════ */
.site-footer { background-color: #2F3437; color: #F8F3E7; padding: 40px 24px 24px; }
.footer-container { display: flex; align-items: flex-start; justify-content: center; color: #F1C40F; gap: 32px; max-width: 1200px; margin: 0 auto; }
.footer-col { text-align: left; color: #F1C40F; margin: 0 50px; }
.footer-col a { color: #F1C40F; text-decoration: underline; transition: opacity 0.2s; }
.footer-col a:hover { opacity: 0.5; }
.footer-col h3 { font-size: 1.05rem; color: #F1C40F; margin-bottom: 10px; }
.footer-col p { font-size: 0.9rem; opacity: 0.8; line-height: 1.7; }
.footer-credit { text-align: center; font-size: 0.8rem; opacity: 0.6; margin-top: 24px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.15); max-width: 1200px; margin-left: auto; margin-right: auto; }

/* ═══════════════════════════════════════
   RESPONSIVE — MOBILE
═══════════════════════════════════════ */
@media (max-width: 768px) {
  .page-title-main { font-size: 1.5rem; }
  .page-title-block { padding: 24px 20px; }
  .section-art-txt { padding: 20px 16px; }
  .section-art-title { font-size: 1rem; }
  .definition-cards { grid-template-columns: 1fr; }
  .footer-container { flex-direction: column; gap: 20px; }
}

/* ── Back to Top ── */
.back-to-top {
  position: fixed; bottom: 28px; right: 24px; z-index: 999;
  padding: 10px 18px; font-size: 0.85rem; opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateY(10px); border-radius: 4px; box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* ── Scroll Margin ── */
.section-art-txt[id] { scroll-margin-top: 80px; }