@charset "utf-8";
/* ═══════════════════════════════════════
   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;
}

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

.subsection-title {
  font-size: 1rem;
  font-weight: 700;
  color: #1D3557;
  margin: 24px 0 10px;
}

/* ═══════════════════════════════════════
   DANGER BANNER
═══════════════════════════════════════ */
.danger-banner {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background-color: #FEF0F0;
  border: 1px solid #E63946;
  border-left: 6px solid #E63946;
  border-radius: 8px;
  padding: 18px 20px;
  margin-bottom: 20px;
}

.danger-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  line-height: 1;
}

.danger-banner strong {
  display: block;
  font-size: 1rem;
  font-weight: 700;
  color: #C0392B;
  margin-bottom: 6px;
}

.danger-banner p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #2F3437;
  margin: 0;
}

/* ═══════════════════════════════════════
   CALLOUT
═══════════════════════════════════════ */
.callout {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  border-radius: 8px;
  padding: 16px 18px;
  margin-top: 4px;
}

.callout--tip {
  background-color: #EBF2FA;
  border-left: 4px solid #1D3557;
}

.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;
}

/* ═══════════════════════════════════════
   ENERGY TYPE CARDS  (1.7.1)
═══════════════════════════════════════ */
.energy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.energy-card {
  border-radius: 8px;
  padding: 18px 16px;
  border-top: 5px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.energy-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.energy-card--yellow  { background: #FEF9EC; border-top-color: #F5B041; }
.energy-card--blue    { background: #EBF2FA; border-top-color: #1D3557; }
.energy-card--teal    { background: #E8F5F2; border-top-color: #1A7A6E; }
.energy-card--slate   { background: #ECEFF1; border-top-color: #455A64; }
.energy-card--red     { background: #FEF0F0; border-top-color: #E63946; }
.energy-card--orange  { background: #FEF4E8; border-top-color: #E67E22; }
.energy-card--green   { background: #EBF5EE; border-top-color: #2E7D52; }
.energy-card--purple  { background: #F3EEF9; border-top-color: #7B4FA6; }

.energy-card-icon {
  font-size: 1.6rem;
  margin-bottom: 8px;
}

.energy-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #1D3557;
  margin-bottom: 8px;
}

.energy-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.energy-card ul li {
  font-size: 0.83rem;
  line-height: 1.45;
  color: #3a3f42;
  padding-left: 14px;
  position: relative;
}

.energy-card ul li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: #aaa;
}

/* ═══════════════════════════════════════
   PROCEDURE PHASES  (1.7.3)
═══════════════════════════════════════ */
.phase-block {
  border: 1px solid #e0dbd2;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 16px;
}

.phase-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 18px;
}

.phase-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  opacity: 0.8;
  white-space: nowrap;
}

.phase-name {
  font-size: 0.95rem;
  font-weight: 700;
}

.phase-hdr--blue   { background-color: #1D3557; color: #F8F3E7; }
.phase-hdr--slate  { background-color: #455A64; color: #F8F3E7; }
.phase-hdr--orange { background-color: #E67E22; color: #F8F3E7; }
.phase-hdr--red    { background-color: #E63946; color: #F8F3E7; }
.phase-hdr--green  { background-color: #2E7D52; color: #F8F3E7; }
.phase-hdr--gold   { background-color: #D4890A; color: #fff; }
.phase-hdr--teal   { background-color: #1A7A6E; color: #F8F3E7; }

.phase-body {
  padding: 16px 18px;
  background-color: #fdfcfa;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ─── STEP ITEMS ─── */
.step-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-badge {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  background-color: #1D3557;
  color: #F8F3E7;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.step-content {
  flex: 1;
}

.step-content strong {
  display: block;
  font-size: 0.95rem;
  color: #1D3557;
  margin-bottom: 6px;
}

.sub-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sub-list li {
  font-size: 0.9rem;
  line-height: 1.5;
  color: #2F3437;
  padding-left: 18px;
  position: relative;
}

.sub-list li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: #E63946;
  font-weight: 700;
}

/* ═══════════════════════════════════════
   REGULATION BLOCKS  (1.7.2 / 1.7.6)
═══════════════════════════════════════ */
.reg-block {
  border: 1px solid #e0dbd2;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 20px;
}

.reg-block--featured {
  border-color: #E63946;
  box-shadow: 0 0 0 3px rgba(230,57,70,0.15);
}

.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;
}

.featured-badge {
  background-color: #fff;
  color: #E63946;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

.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;
}

/* ═══════════════════════════════════════
   DEVICE GRID  (1.7.4)
═══════════════════════════════════════ */
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.device-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: #F4F6F8;
  border-radius: 8px;
  padding: 14px 16px;
  border-left: 3px solid #1D3557;
  transition: background-color 0.15s ease;
}

.device-item:hover { background-color: #EBF2FA; }

.device-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 2px;
}

.device-info strong {
  display: block;
  font-size: 0.9rem;
  color: #1D3557;
  margin-bottom: 4px;
}

.device-info p {
  font-size: 0.85rem;
  line-height: 1.45;
  color: #555;
  margin: 0;
}

/* ═══════════════════════════════════════
   WHMIS GRID  (1.7.7)
═══════════════════════════════════════ */
.whmis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 12px;
}

.whmis-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: #FEF9EC;
  border-radius: 6px;
  padding: 12px 14px;
}

.whmis-icon { font-size: 1.4rem; flex-shrink: 0; }

.whmis-item strong {
  display: block;
  font-size: 0.9rem;
  color: #1D3557;
  margin-bottom: 4px;
}

.whmis-item p {
  font-size: 0.85rem;
  line-height: 1.45;
  color: #555;
  margin: 0;
}

/* ═══════════════════════════════════════
   CAT RATINGS GRID  (1.7.7)
═══════════════════════════════════════ */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 8px;
}

.cat-item {
  border-radius: 8px;
  padding: 14px 12px;
  background-color: #F4F6F8;
  border: 1px solid #e0dbd2;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: center;
}

.cat-item--highlight {
  background-color: #FEF9EC;
  border-color: #F5B041;
  box-shadow: 0 0 0 2px rgba(245,176,65,0.3);
}

.cat-badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 20px;
  letter-spacing: 0.05em;
}

.cat-badge--i   { background: #ECEFF1; color: #455A64; }
.cat-badge--ii  { background: #EBF2FA; color: #1D3557; }
.cat-badge--iii { background: #FEF9EC; color: #D4890A; }
.cat-badge--iv  { background: #FEF0F0; color: #C0392B; }

.cat-desc {
  font-size: 0.8rem;
  line-height: 1.45;
  color: #555;
}

/* ═══════════════════════════════════════
   RIGHTS & RESPONSIBILITIES GRID  (1.7.8)
═══════════════════════════════════════ */
.rights-resp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 12px;
}

.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;
}


/* 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; }

  .energy-grid       { grid-template-columns: 1fr 1fr; }
  .device-grid       { grid-template-columns: 1fr; }
  .whmis-grid        { grid-template-columns: 1fr; }
  .cat-grid          { grid-template-columns: 1fr 1fr; }
  .rights-resp-grid  { grid-template-columns: 1fr; }

  .footer-container { flex-direction: column; gap: 20px; }
}

@media (max-width: 480px) {
  .energy-grid  { grid-template-columns: 1fr; }
  .cat-grid     { grid-template-columns: 1fr 1fr; }
  .step-badge   { width: 26px; height: 26px; font-size: 0.8rem; }
  .page-title-main { font-size: 1.3rem; }
}
/* ── 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 Quick Nav Anchor Targets ── */
.section-art-txt[id],
.ppe-category[id],
.subsection-block[id],
.hazard-nav-card[id],
div[id].section-art-txt,
article[id] {
  scroll-margin-top: 80px;
}