@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; }

.square-logo { width: 74px; height: 64px; margin: 5px; }

/* ═══════════════════════════════════════
   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;
}

/* ═══════════════════════════════════════
   QUICK NAV
═══════════════════════════════════════ */
.quick-nav-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #888;
  margin-bottom: 0.75rem;
}

.quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.qnav-card {
  background: #ffffff;
  border: 1px solid #e0dbd2;
  border-radius: 8px;
  padding: 0.75rem 0.5rem;
  text-align: center;
  color: #1D3557;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: box-shadow 0.2s, border-color 0.2s, transform 0.15s;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
}

.qnav-card:hover {
  border-color: #2a4d73;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  transform: translateY(-2px);
  text-decoration: none;
}

.qnav-card.active {
  border-color: #2a4d73;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  transform: translateY(-2px);
  background-color: #1D3557;
  color: #fff;
}

.qnav-card.active .qnav-icon { filter: brightness(1.3); }

.qnav-icon { font-size: 1.7rem; line-height: 1; }

/* ═══════════════════════════════════════
   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;
}

/* ── Lesson Image ── */
.lesson-img {
  display: block;
  width: 400px;
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  margin: 0 auto 20px;
}

/* ═══════════════════════════════════════
   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--red   { background: #FEF0F0; border-top-color: #E63946; }
.def-card--gold  { background: #FEF9EC; border-top-color: #F5B041; }
.def-card--green { background: #F0F7F4; border-top-color: #2E7D52; }
.def-card--slate { background: #ECEFF1; border-top-color: #455A64; }

.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--featured {
  border-color: #F5B041;
  box-shadow: 0 0 0 3px rgba(245,176,65,0.25);
}

.reg-block-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  position: relative;
}

.reg-hdr--blue   { background-color: #1D3557; color: #F8F3E7; }
.reg-hdr--red    { background-color: #E63946; color: #F8F3E7; }
.reg-hdr--green  { background-color: #2E7D52; color: #F8F3E7; }
.reg-hdr--orange { background-color: #E67E22; color: #F8F3E7; }
.reg-hdr--slate  { background-color: #455A64; color: #F8F3E7; }
.reg-hdr--gold   { background-color: #D4890A; 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;
}

/* ═══════════════════════════════════════
   CHECK LIST
═══════════════════════════════════════ */
.check-list {
  list-style: none;
  margin: 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;
}

/* ═══════════════════════════════════════
   RIGHTS & RESPONSIBILITIES GRID
═══════════════════════════════════════ */
.rights-resp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.rr-col {
  border-radius: 6px;
  padding: 14px 16px;
}

.rr-col--rights {
  background-color: #EBF2FA;
  border-left: 3px solid #1D3557;
}

.rr-col--resp {
  background-color: #FEF9EC;
  border-left: 3px solid #F5B041;
}

.rr-col h5 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 10px;
  color: #1D3557;
}

.rr-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rr-col ul li {
  font-size: 0.9rem;
  line-height: 1.5;
  color: #2F3437;
  padding-left: 16px;
  position: relative;
}

.rr-col ul li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: #888;
}

/* ═══════════════════════════════════════
   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 #F5B041; }
.callout--red  { background-color: #FEF0F0; border-left: 4px solid #E63946; }

.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;
}

/* ═══════════════════════════════════════
   FORMULA BOX
═══════════════════════════════════════ */
.formula-box {
  background-color: #f4f1e8;
  border-left: 4px solid #1D3557;
  border-radius: 6px;
  padding: 16px 20px;
  margin: 16px 0;
}

.formula-box p {
  margin: 6px 0;
  color: #1D3557;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

/* ═══════════════════════════════════════
   STYLED TABLE
═══════════════════════════════════════ */
.data-table-wrap { overflow-x: auto; margin-bottom: 4px; }

.styled-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.styled-table th {
  background-color: #1D3557;
  color: #F8F3E7;
  padding: 10px 14px;
  text-align: left;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.styled-table td {
  padding: 10px 14px;
  border-bottom: 1px solid #e8e2d6;
  color: #2F3437;
  vertical-align: top;
}

.styled-table tbody tr:nth-child(even) { background-color: #f9f7f2; }
.styled-table tbody tr:hover { background-color: #EBF2FA; }

/* ═══════════════════════════════════════
   STEP LIST
═══════════════════════════════════════ */
.step-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  counter-reset: step-counter;
}

.step-list li {
  font-size: 0.95rem;
  color: #2F3437;
  padding-left: 36px;
  position: relative;
  line-height: 1.55;
  counter-increment: step-counter;
}

.step-list li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  background-color: #1D3557;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}


/* 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
═══════════════════════════════════════ */
@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; }
  .rights-resp-grid { grid-template-columns: 1fr; }
  .quick-nav-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-container { flex-direction: column; gap: 20px; }
}

@media (max-width: 480px) {
  .reg-block-header h4 { font-size: 0.9rem; }
  .quick-nav-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── Back to Top Button ── */
.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 for Anchor Targets ── */
.section-art-txt[id],
article[id] {
  scroll-margin-top: 80px;
}

/* ═══════════════════════════════════════
   OUTCOMES LIST
═══════════════════════════════════════ */
.outcomes-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.outcomes-list li {
  font-size: 0.95rem;
  color: #2F3437;
  padding-left: 28px;
  position: relative;
  line-height: 1.55;
}

.outcomes-list li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: #2E7D52;
  font-weight: 700;
  font-size: 1rem;
}

/* ═══════════════════════════════════════
   SECTION MAP GRID
═══════════════════════════════════════ */
.section-map-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.section-map-card {
  display: flex;
  flex-direction: column;
  background: #f9f7f2;
  border: 1px solid #e0dbd2;
  border-top: 4px solid #1D3557;
  border-radius: 8px;
  padding: 20px 18px;
  text-decoration: none;
  color: inherit;
  transition: box-shadow 0.2s, transform 0.15s, border-top-color 0.2s;
}

.section-map-card:hover {
  box-shadow: 0 6px 18px rgba(0,0,0,0.1);
  transform: translateY(-3px);
  border-top-color: #E63946;
}

.smc-number {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #E63946;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.smc-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  line-height: 1;
}

.section-map-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #1D3557;
  margin-bottom: 8px;
  line-height: 1.3;
}

.section-map-card p {
  font-size: 0.88rem;
  color: #555;
  line-height: 1.55;
  flex: 1;
  margin-bottom: 14px;
}

.smc-link {
  font-size: 0.82rem;
  font-weight: 700;
  color: #1D3557;
  text-decoration: none;
  margin-top: auto;
}

.section-map-card:hover .smc-link { color: #E63946; }