/* ============================================================
 * /fire-suppression-systems/ — scoped parent-hub styles
 *
 * Loaded only when is_page('fire-suppression-systems').
 * Inherits :root tokens from style.css; reuses the global
 * .container / .section / .section__header / .label / .h2 / .btn
 * components (loaded via c4-custom). This file styles the .fss-*
 * layer only. Static render (no JS reveal). Mobile-first.
 * Specificity is kept low enough that no override keyword is needed.
 * ============================================================ */

:root {
  --fss-red: var(--c4-red, #D11A22);
  --fss-red-dark: var(--c4-red-dark, #A8141B);
  --fss-yellow: var(--c4-yellow, #FFC200);
  --fss-elev: #16161A;
  --fss-elev-2: #1F1F24;
  --fss-line: #2A2A30;
  --fss-line-soft: rgba(255, 255, 255, 0.07);
  --fss-ink-80: rgba(255, 255, 255, 0.82);
  --fss-ink-65: rgba(255, 255, 255, 0.64);
}

.fss-page {
  background: var(--c4-black);
  color: var(--c4-white);
  overflow-x: clip;
  width: 100%;
  max-width: 100vw;
}

.fss-page .container--wide {
  max-width: var(--container-wide);
}

/* Composite cards on their own layer so hover transforms stay cheap */
.fss-family,
.fss-sector,
.fss-related__card {
  contain: layout paint;
}

/* Skip paint on far-below-fold sections until near the viewport.
 * NOTE for QA: a single full-page screenshot renders these blank.
 * That is Chrome skipping off-screen paint, not a rendering bug.
 * Scroll to each section, or assert on DOM counts. */
.fss-page > .fss-integrity,
.fss-page > .fss-detection,
.fss-page > .fss-scope,
.fss-page > .fss-sectors,
.fss-page > .fss-coverage,
.fss-page > .fss-faqs,
.fss-page > .fss-related {
  content-visibility: auto;
  contain-intrinsic-size: 1px 900px;
}

/* Shared prose blocks -------------------------------------------------- */
.fss-direct {
  font-size: clamp(1rem, 1.35vw, 1.15rem);
  line-height: 1.6;
  color: var(--fss-ink-80);
  max-width: 780px;
  margin-inline: auto;
}

.fss-passage {
  max-width: 900px;
  margin: clamp(1.75rem, 3vw, 2.75rem) auto 0;
  font-size: clamp(0.98rem, 1.15vw, 1.08rem);
  line-height: 1.75;
  color: var(--fss-ink-65);
}

.fss-passage--flush {
  margin-inline: 0;
  max-width: 620px;
}

.fss-passage a,
.fss-scope__foot a,
.fss-faq__a a {
  color: var(--fss-yellow);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 194, 0, 0.35);
  transition: border-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.fss-passage a:hover,
.fss-scope__foot a:hover,
.fss-faq__a a:hover {
  color: var(--c4-white);
  border-bottom-color: var(--c4-white);
}

/* Keep the CO2 subscript from nudging line-height */
.fss-page sub {
  font-size: 0.72em;
  line-height: 0;
  vertical-align: baseline;
  position: relative;
  bottom: -0.22em;
}

/* ============================================================
 * 1. HERO
 * ============================================================ */
.fss-hero {
  position: relative;
  padding-block: clamp(7rem, 13vh, 10rem) clamp(3rem, 6vh, 5rem);
  isolation: isolate;
  overflow: hidden;
}

.fss-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 22% 18%, rgba(209, 26, 34, 0.28), transparent 55%),
    radial-gradient(ellipse at 88% 88%, rgba(255, 194, 0, 0.10), transparent 50%),
    linear-gradient(180deg, #0d0d10 0%, var(--c4-black) 80%);
}

.fss-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

.fss-hero__copy {
  min-width: 0;
  max-width: 760px;
}

.fss-hero__eyebrow {
  display: inline-block;
  padding: 0.4rem 0.85rem;
  font-family: var(--font-heading);
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fss-yellow);
  background: rgba(255, 194, 0, 0.10);
  border: 1px solid rgba(255, 194, 0, 0.30);
  border-radius: var(--radius-pill);
  margin-bottom: 1.5rem;
}

.fss-hero__headline {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.15rem, 4.6vw, 3.7rem);
  line-height: 1.04;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.fss-hero__direct {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.6;
  color: var(--fss-ink-80);
  max-width: 640px;
  margin-bottom: 2.25rem;
}

.fss-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 2.5rem;
}

.fss-hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.75rem;
  align-items: center;
}

.fss-hero__trust li {
  position: relative;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.82);
  padding-left: 1.1rem;
}

.fss-hero__trust li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 7px;
  height: 7px;
  transform: translateY(-50%) rotate(45deg);
  background: var(--fss-yellow);
  border-radius: 1px;
}

/* Hero panel — how the system is selected */
.fss-hero__panel {
  background: linear-gradient(160deg, var(--fss-elev-2), var(--fss-elev));
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.8);
}

.fss-hero__panel-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fss-yellow);
  margin-bottom: 1.25rem;
}

.fss-hero__checklist {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.fss-hero__checklist li {
  position: relative;
  padding-left: 1.85rem;
  font-size: 0.95rem;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.9);
}

.fss-hero__checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15rem;
  width: 1.15rem;
  height: 1.15rem;
  border-radius: 50%;
  background: var(--fss-red);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.15);
}

.fss-hero__checklist li::after {
  content: "";
  position: absolute;
  left: 0.38rem;
  top: 0.4rem;
  width: 0.34rem;
  height: 0.58rem;
  border: solid var(--c4-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.fss-hero__panel-foot {
  font-size: 0.85rem;
  line-height: 1.45;
  color: var(--fss-ink-65);
  border-top: 1px solid var(--fss-line-soft);
  padding-top: 1rem;
  margin: 0;
}

/* ============================================================
 * 3. SUPPRESSION FAMILIES — cards + type-selection table + note
 * ============================================================ */
.fss-families__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.fss-family {
  display: flex;
  flex-direction: column;
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-left: 3px solid var(--fss-red);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  transition: transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.fss-family:hover {
  transform: translateY(-4px);
  border-left-color: var(--fss-yellow);
  box-shadow: 0 24px 44px -28px rgba(209, 26, 34, 0.55);
}

.fss-family__tag {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fss-yellow);
  background: rgba(255, 194, 0, 0.08);
  border: 1px solid rgba(255, 194, 0, 0.22);
  border-radius: var(--radius-pill);
  padding: 0.25rem 0.7rem;
  margin-bottom: 1rem;
}

.fss-family__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.fss-family__desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--fss-ink-65);
  margin-bottom: 1.1rem;
  flex-grow: 1;
}

.fss-family__link {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fss-yellow);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.fss-family__link::after {
  content: " \2192";
}

.fss-family__link:hover {
  color: var(--c4-white);
}

/* Type-selection table */
.fss-table-wrap {
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
  overflow-x: auto;
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-md);
  -webkit-overflow-scrolling: touch;
}

.fss-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
  font-size: 0.92rem;
}

.fss-table__caption {
  caption-side: top;
  text-align: left;
  padding: 1rem 1.25rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--fss-ink-65);
  background: var(--fss-elev);
  border-bottom: 1px solid var(--fss-line);
}

.fss-table thead th {
  text-align: left;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c4-white);
  background: linear-gradient(180deg, var(--fss-elev-2), var(--fss-elev));
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--fss-line);
}

.fss-table tbody th,
.fss-table tbody td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--fss-line-soft);
  vertical-align: top;
  line-height: 1.55;
}

.fss-table tbody th {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--fss-yellow);
  white-space: nowrap;
}

.fss-table tbody td {
  color: var(--fss-ink-65);
}

.fss-table tbody tr {
  transition: background var(--duration-fast) var(--ease-out);
}

.fss-table tbody tr:hover {
  background: rgba(209, 26, 34, 0.06);
}

.fss-table tbody tr:last-child th,
.fss-table tbody tr:last-child td {
  border-bottom: 0;
}

/* Sprinkler scope note */
.fss-note {
  max-width: 900px;
  margin: clamp(1.75rem, 3vw, 2.5rem) auto 0;
  padding: 1.4rem 1.6rem;
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-left: 3px solid var(--fss-yellow);
  border-radius: var(--radius-md);
}

.fss-note__title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fss-yellow);
  margin-bottom: 0.6rem;
}

.fss-note p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--fss-ink-65);
  margin: 0;
}

/* ============================================================
 * 4. ROOM INTEGRITY — numbered door-fan steps
 * ============================================================ */
.fss-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: clamp(2rem, 4vw, 3rem);
  list-style: none;
}

.fss-step {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.fss-step__num {
  flex-shrink: 0;
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--fss-red);
  letter-spacing: -0.02em;
}

.fss-step__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}

.fss-step__body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--fss-ink-65);
  margin: 0;
}

/* ============================================================
 * 6. FULL SCOPE — checklist
 * ============================================================ */
.fss-scope__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem 1.75rem;
  max-width: 960px;
  margin: clamp(2rem, 4vw, 3rem) auto 0;
}

.fss-scope__list li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.92rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.85);
}

.fss-scope__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--fss-red);
  transform: rotate(45deg);
  border-radius: 1px;
}

.fss-scope__foot {
  max-width: 900px;
  margin: 1.75rem auto 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--fss-ink-65);
  padding: 1.1rem 1.4rem;
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-md);
}

/* ============================================================
 * 7. SECTORS
 * ============================================================ */
.fss-sectors__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.fss-sector {
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.5rem;
  transition: transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.fss-sector:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 194, 0, 0.4);
  box-shadow: 0 24px 44px -28px rgba(0, 0, 0, 0.85);
}

.fss-sector__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.6rem;
}

.fss-sector__desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--fss-ink-65);
  margin: 0;
}

/* ============================================================
 * 8. WESTERN CAPE COVERAGE
 * ============================================================ */
.fss-coverage__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
}

.fss-coverage__copy {
  min-width: 0;
}

.fss-coverage__copy .label,
.fss-coverage__copy .h2 {
  text-align: left;
}

.fss-coverage__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem 1.5rem;
  margin: 1.75rem 0;
}

.fss-coverage__list li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.92rem;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.85);
}

.fss-coverage__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--fss-yellow);
  transform: rotate(45deg);
}

.fss-coverage__map {
  min-width: 0;
}

.fss-coverage__map svg {
  width: 100%;
  height: auto;
  display: block;
}

.fss-coverage__pin text {
  font-family: var(--font-heading);
}

/* ============================================================
 * 9. FAQs
 * ============================================================ */
.fss-faqs__list {
  display: grid;
  gap: 1rem;
  max-width: 900px;
  margin: clamp(2rem, 4vw, 3rem) auto 0;
}

.fss-faq {
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.6rem;
  transition: border-color var(--duration-normal) var(--ease-out);
}

.fss-faq:hover {
  border-color: rgba(255, 194, 0, 0.35);
}

.fss-faq__q {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c4-white);
  margin-bottom: 0.65rem;
  padding-left: 1.1rem;
  position: relative;
}

.fss-faq__q::before {
  content: "Q";
  position: absolute;
  left: 0;
  top: 0;
  font-size: 0.85rem;
  color: var(--fss-red);
}

.fss-faq__a {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--fss-ink-65);
  margin: 0;
  padding-left: 1.1rem;
}

/* ============================================================
 * 10. RELATED SERVICES
 * ============================================================ */
.fss-related__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: clamp(2rem, 4vw, 3rem);
}

.fss-related__card {
  display: flex;
  flex-direction: column;
  background: var(--fss-elev);
  border: 1px solid var(--fss-line);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.5rem;
  text-decoration: none;
  color: inherit;
  transition: transform var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.fss-related__card:hover {
  transform: translateY(-4px);
  border-color: var(--fss-red);
  box-shadow: 0 24px 44px -28px rgba(209, 26, 34, 0.5);
}

.fss-related__title {
  font-family: var(--font-heading);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.6rem;
}

.fss-related__desc {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--fss-ink-65);
  margin-bottom: 1rem;
  flex-grow: 1;
}

.fss-related__cta {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fss-yellow);
}

.fss-related__cta::after {
  content: " \2192";
}

/* ============================================================
 * 11. FINAL CTA
 * ============================================================ */
.fss-cta {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.fss-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(209, 26, 34, 0.45), transparent 60%),
    radial-gradient(ellipse at 80% 90%, rgba(255, 194, 0, 0.14), transparent 55%),
    linear-gradient(180deg, #14090a, #0b0709);
}

.fss-cta__inner {
  text-align: center;
  max-width: 780px;
}

.fss-cta__inner .h2 {
  margin-bottom: 1rem;
}

.fss-cta__inner > p {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.6;
  color: var(--fss-ink-80);
  margin-bottom: 2rem;
}

.fss-cta__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  justify-content: center;
}

/* ============================================================
 * RESPONSIVE
 * ============================================================ */
@media (max-width: 900px) {
  .fss-hero__inner,
  .fss-coverage__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .fss-hero__panel {
    order: 2;
  }

  .fss-passage--flush {
    max-width: none;
  }
}

@media (max-width: 560px) {
  .fss-hero {
    padding-block: clamp(6rem, 12vh, 8rem) 3rem;
  }

  .fss-hero__cta .btn,
  .fss-cta__buttons .btn {
    width: 100%;
    justify-content: center;
  }

  .fss-coverage__list {
    grid-template-columns: minmax(0, 1fr);
  }

  .fss-step {
    gap: 0.85rem;
  }
}

/* ============================================================
 * MOTION SAFETY
 * ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .fss-family,
  .fss-sector,
  .fss-related__card,
  .fss-table tbody tr,
  .fss-faq,
  .fss-family__link {
    transition: none;
  }
}