/* ============================================================
   FLOWELL OIL & GAS — Components
   Nav, Footer, Buttons, Cards, Forms, Breadcrumb, Page Header
   ============================================================ */

/* ════════════════════════════════════════════════════════════
   NAVIGATION
   ════════════════════════════════════════════════════════════ */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

/* Scrolled state: becomes opaque */
.site-nav.is-scrolled {
  background-color: rgba(13, 13, 15, 0.97);
  border-bottom-color: var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ── Wordmark logo ── */
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  transition: color var(--dur-fast) var(--ease-out);
  flex-shrink: 0;
}
.nav-logo:hover { color: var(--accent); }
.nav-logo span {
  color: var(--accent);
  font-style: italic;
}

/* ── Desktop nav links ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  padding-block: var(--space-2);
  transition: color var(--dur-fast) var(--ease-out);
}

/* Underline grow from left */
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--dur-base) var(--ease-out);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

/* ── Products dropdown ── */
.nav-item--dropdown {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 1.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 240px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-dropdown);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

.nav-item--dropdown:hover .nav-dropdown,
.nav-item--dropdown:focus-within .nav-dropdown,
.nav-item--dropdown .nav-dropdown.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 400;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--dur-fast) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out),
              padding-left var(--dur-fast) var(--ease-out);
}

.nav-dropdown-link:last-child {
  border-bottom: none;
}

.nav-dropdown-link:hover {
  color: var(--text-primary);
  background-color: var(--accent-glow);
  padding-left: var(--space-8);
}

/* ── CTA link ── */
.nav-cta {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-primary);
  padding: var(--space-2) var(--space-5);
  border: 1px solid var(--border);
  transition: border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
}

.nav-cta:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Mobile menu toggle ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--text-secondary);
  transform-origin: center;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-base) var(--ease-out),
              background-color var(--dur-fast) var(--ease-out);
}

.nav-toggle:hover .nav-toggle-bar { background: var(--text-primary); }

/* Toggle animation — open state */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── Mobile nav drawer ── */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
  overflow-y: auto;
  padding: var(--space-8) clamp(1.25rem, 4vw, 2.5rem);
  z-index: 99;
  flex-direction: column;
  gap: 0;
}

.nav-mobile.is-open {
  display: flex;
}

.nav-mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--text-secondary);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-mobile-link:hover { color: var(--text-primary); }

.nav-mobile-sublabel {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--accent);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.nav-mobile-sublink {
  display: block;
  font-size: var(--text-base);
  font-weight: 300;
  color: var(--text-secondary);
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--dur-fast) var(--ease-out), padding-left var(--dur-fast) var(--ease-out);
}

.nav-mobile-sublink:hover {
  color: var(--text-primary);
  padding-left: var(--space-4);
}


/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */

.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-block: var(--space-16) var(--space-8);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.footer-brand-tagline {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  max-width: 28ch;
  line-height: var(--leading-normal);
  margin-bottom: var(--space-8);
}

.footer-address {
  font-size: var(--text-sm);
  font-style: normal;
  color: var(--text-secondary);
  line-height: var(--leading-loose);
}

.footer-address a {
  color: var(--text-secondary);
  transition: color var(--dur-fast) var(--ease-out);
}
.footer-address a:hover { color: var(--accent); }

.footer-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.footer-nav-col-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
}

.footer-nav-link {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  padding-block: var(--space-2);
  transition: color var(--dur-fast) var(--ease-out);
}
.footer-nav-link:hover { color: var(--accent); }

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-2);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-align: center;
}

.footer-cert {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  letter-spacing: var(--tracking-wide);
  text-align: center;
}

.footer-credit {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-align: center;
  margin-top: var(--space-4);
}

.footer-credit a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-credit a:hover {
  color: var(--accent);
}

/* ════════════════════════════════════════════════════════════
   BUTTONS
   ════════════════════════════════════════════════════════════ */

/* Primary — full amber border, ghost interior */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  line-height: 1;
  padding: var(--space-4) var(--space-8);
  border: 1px solid var(--border);
  color: var(--text-primary);
  transition: border-color var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out),
              background-color var(--dur-base) var(--ease-out);
  cursor: pointer;
  min-height: 44px; /* WCAG touch target */
}

.btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Accent button — amber border from start */
.btn--accent {
  border-color: var(--accent);
  color: var(--accent);
}
.btn--accent:hover {
  background-color: var(--accent);
  color: var(--bg);
}

/* Ghost text link with underline grow */
.btn--ghost {
  border: none;
  padding-inline: 0;
  position: relative;
  color: var(--text-secondary);
}
.btn--ghost::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width var(--dur-base) var(--ease-out);
}
.btn--ghost:hover {
  border: none;
  color: var(--text-primary);
}
.btn--ghost:hover::after { width: 100%; }

/* ════════════════════════════════════════════════════════════
   PAGE HEADER (compact, for inner pages)
   ════════════════════════════════════════════════════════════ */

.page-header {
  position: relative;
  min-height: 40vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-top: calc(var(--nav-height) + var(--space-16));
  padding-bottom: var(--space-16);
  overflow: hidden;
  background: var(--bg);
}

.page-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.25;
  pointer-events: none;
}

.page-header-inner {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}

.breadcrumb a {
  color: var(--text-tertiary);
  transition: color var(--dur-fast) var(--ease-out);
}
.breadcrumb a:hover { color: var(--accent); }

.breadcrumb-sep {
  color: var(--border);
  font-size: 0.625rem;
}

.page-header-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 5vw, var(--text-3xl));
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  max-width: 20ch;
}

/* ════════════════════════════════════════════════════════════
   SERVICE CARDS — asymmetric layout
   ════════════════════════════════════════════════════════════ */

/* Lead card — full width */
.service-lead {
  padding: var(--space-12) 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.service-lead-number {
  font-family: var(--font-display);
  font-size: 6rem;
  font-weight: 400;
  color: var(--border);
  line-height: 1;
  letter-spacing: -0.05em;
}

.service-card-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  line-height: var(--leading-snug);
}

.service-card-body {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  max-width: 52ch;
}

/* Secondary services — 3-column grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  margin-top: 1px;
}

.service-item {
  background: var(--bg);
  padding: var(--space-10) var(--space-8);
  transition: background-color var(--dur-base) var(--ease-out);
}

.service-item:hover {
  background-color: var(--bg-alt);
}

/* ════════════════════════════════════════════════════════════
   PRODUCT CARDS — list style with hover reveal
   ════════════════════════════════════════════════════════════ */

.products-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.product-row {
  display: grid;
  grid-template-columns: 3fr 1fr;
  align-items: center;
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--border);
  gap: var(--space-8);
  transition: border-color var(--dur-base) var(--ease-out);
  position: relative;
}

.product-row::before {
  content: '';
  position: absolute;
  left: -clamp(1.25rem, 4vw, 2.5rem);
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--accent-muted);
  transition: width var(--dur-base) var(--ease-out);
}

.product-row:hover {
  border-color: var(--accent);
}

.product-row:hover::before {
  width: 2px;
}

.product-row-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  color: var(--text-primary);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-2);
}

.product-row-desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  max-width: 55ch;
  line-height: var(--leading-normal);
}

.product-row-link {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-tertiary);
  text-align: right;
  transition: color var(--dur-base) var(--ease-out);
  white-space: nowrap;
}

.product-row:hover .product-row-link {
  color: var(--accent);
}

/* ════════════════════════════════════════════════════════════
   PRODUCT FEATURE TABLE — spec-style list
   ════════════════════════════════════════════════════════════ */

.spec-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.spec-item {
  background: var(--bg);
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  transition: background-color var(--dur-fast) var(--ease-out);
}

.spec-item:hover {
  background: var(--bg-alt);
}

.spec-item::before {
  content: '';
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ════════════════════════════════════════════════════════════
   CONTACT FORM
   ════════════════════════════════════════════════════════════ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-20);
  align-items: start;
}

.contact-detail-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.contact-detail-value {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

.contact-detail-value a {
  color: var(--text-secondary);
  transition: color var(--dur-fast) var(--ease-out);
}
.contact-detail-value a:hover { color: var(--accent); }

.contact-detail-block {
  margin-bottom: var(--space-8);
}

/* Form fields */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-tertiary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 300;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-none);
  transition: border-color var(--dur-base) var(--ease-out);
  appearance: none;
  -webkit-appearance: none;
  min-height: 44px;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-input.is-error,
.form-select.is-error,
.form-textarea.is-error {
  border-color: var(--error);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235A5855' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-5) center;
  padding-right: var(--space-10);
  cursor: pointer;
}

.form-error-msg {
  font-size: var(--text-xs);
  color: var(--error);
  margin-top: var(--space-1);
  display: none;
}

.form-error-msg.is-visible {
  display: block;
}

/* Form states */
.form-status {
  display: none;
  padding: var(--space-5) var(--space-6);
  border: 1px solid;
  font-size: var(--text-sm);
  margin-top: var(--space-6);
}

.form-status--success {
  border-color: var(--success);
  color: var(--success);
  background: rgba(74, 140, 106, 0.08);
}

.form-status--error {
  border-color: var(--error);
  color: var(--error);
  background: rgba(184, 82, 82, 0.08);
}

.form-status.is-visible {
  display: block;
}

/* ════════════════════════════════════════════════════════════
   ISO CERTIFICATION BLOCK
   ════════════════════════════════════════════════════════════ */

.cert-block {
  display: flex;
  align-items: flex-start;
  gap: var(--space-8);
  padding: var(--space-10) var(--space-10);
  border: 1px solid var(--border);
  background: var(--surface);
}

.cert-badge {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.02em;
  text-align: center;
  line-height: 1.2;
}

.cert-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.cert-body {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  max-width: 50ch;
}

/* ════════════════════════════════════════════════════════════
   PULL QUOTE / STATEMENT BAND
   ════════════════════════════════════════════════════════════ */

.statement-band {
  padding-block: var(--space-section);
  background: var(--bg-alt);
  border-block: 1px solid var(--border);
}

.statement-text {
  font-family: var(--font-display);
  font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--text-primary);
  max-width: 22ch;
}

.statement-text em {
  font-style: italic;
  color: var(--accent);
}

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-lead {
    grid-template-columns: 1fr;
  }

  .service-lead-number {
    font-size: 4rem;
  }

  .footer-nav-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

@media (max-width: 768px) {
  /* Nav */
  .nav-links,
  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  /* Layout adjustments */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-2);
  }

  .cert-block {
    flex-direction: column;
    gap: var(--space-5);
  }

  .product-row {
    grid-template-columns: 1fr;
  }

  .product-row-link {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .page-header {
    min-height: 35vh;
  }
}

/* ════════════════════════════════════════════════════════════
   HERO — Homepage
   ════════════════════════════════════════════════════════════ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  background: var(--bg);
  padding-top: var(--nav-height);
}

.hero-inner {
  display: grid;
  grid-template-columns: 3fr 1fr;
  gap: var(--space-16);
  align-items: end;
  padding-bottom: var(--space-20);
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-6);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: var(--text-primary);
}

.hero-lead {
  font-size: var(--text-md);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  max-width: 48ch;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-meta {
  padding-bottom: var(--space-4);
}

.hero-facts {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  border-left: 1px solid var(--border);
  padding-left: var(--space-6);
}

.hero-fact dt {
  margin-bottom: var(--space-1);
}

.hero-fact dd {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 400;
}

.hero-scroll-cue {
  position: absolute;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
}

/* ── About page / section split ── */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.about-heading {
  font-family: var(--font-display);
  font-size: clamp(var(--text-xl), 3vw, var(--text-2xl));
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-top: var(--space-4);
}

.about-heading em {
  font-style: italic;
  color: var(--accent);
}

.about-body {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  max-width: 54ch;
}

/* ── Section heading ── */
.section-heading {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  font-weight: 400;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-top: var(--space-3);
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-10);
    padding-bottom: var(--space-16);
    align-items: start;
    padding-top: var(--space-12);
  }

  .hero-meta {
    border-top: 1px solid var(--border);
    padding-top: var(--space-6);
    padding-left: 0;
  }

  .hero-facts {
    flex-direction: row;
    flex-wrap: wrap;
    border-left: none;
    padding-left: 0;
    gap: var(--space-5);
  }

  .hero-scroll-cue {
    display: none;
  }

  .about-split {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* ════════════════════════════════════════════════════════════
   HERO BACKGROUND IMAGE
   Purpose: real-world industrial context; dark overlay preserves
   text legibility; image is decorative, text is the message
   ════════════════════════════════════════════════════════════ */

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.55;
  /* Subtle grain texture makes image feel editorial rather than stock */
  filter: brightness(0.8) contrast(1.05) saturate(0.9);
}

/* Dark gradient overlay — heavier at top (nav) and slightly lighter at base
   so the amber horizon in the image bleeds through at the bottom */
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      to bottom,
      rgba(13, 13, 15, 0.85) 0%,
      rgba(13, 13, 15, 0.55) 45%,
      rgba(13, 13, 15, 0.75) 100%
    );
  pointer-events: none;
}

/* ════════════════════════════════════════════════════════════
   WHATSAPP FLOATING BUTTON
   Position: fixed bottom-right — unobtrusive but accessible
   Colour: WhatsApp brand green (#25D366), not recoloured to amber
   (recolouring would break instant recognition)
   ════════════════════════════════════════════════════════════ */

.whatsapp-btn {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 90; /* below nav (100) */

  display: flex;
  align-items: center;
  justify-content: center;

  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #25D366;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);

  transition:
    transform var(--dur-base) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out);
}

.whatsapp-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

.whatsapp-btn:focus-visible {
  outline: 2px solid #25D366;
  outline-offset: 4px;
}

.whatsapp-btn svg {
  width: 26px;
  height: 26px;
  fill: #ffffff;
  flex-shrink: 0;
}

/* Mobile: slightly smaller and lower gap from edge */
@media (max-width: 480px) {
  .whatsapp-btn {
    width: 48px;
    height: 48px;
    bottom: var(--space-4);
    right: var(--space-4);
  }

  .whatsapp-btn svg {
    width: 24px;
    height: 24px;
  }
}