/* ==========================================================================
   Opus AV — Inner page shared styles
   Linked by every inner page (about, services, contact, testimonials,
   news, all sector pages). Page-specific overrides go in their own file.
   Never hard-code hex values — always reference tokens from tokens.css.
   ========================================================================== */


/* ── Page masthead (replaces video hero on all inner pages) ─────────────── */

.page-masthead {
  position: relative;
  overflow: hidden;
  background: var(--opus-charcoal);
  padding-top: calc(var(--header-h) + var(--space-7));
  padding-bottom: var(--space-7);
  color: var(--opus-white);
}

/* Equalizer bars-mark watermark — disabled site-wide per client preference.
   opacity: 0 here prevents any page CSS background-image override from showing. */
.page-masthead::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 300px;
  height: 300px;
  background-image: none;
  background-repeat: no-repeat;
  background-size: contain;
  background-position: bottom right;
  opacity: 0; /* bars mark hidden — set to 0.06 and add background-image to re-enable */
  pointer-events: none;
  z-index: 0;
}

.page-masthead .container {
  position: relative;
  z-index: 1;
}

/* Eyebrow label above the H1 */
.page-masthead .eyebrow {
  color: var(--accent);
  margin-bottom: var(--space-2);
}

/* Main heading */
.page-masthead h1 {
  color: var(--opus-white);
  font-weight: var(--fw-light);
  font-size: var(--fs-display);
  line-height: 1.05;
  letter-spacing: var(--ls-display);
  max-width: 20ch;
  margin-bottom: var(--space-3);
}

/* Lead paragraph */
.page-masthead__lede {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--opus-mist);
  opacity: 0.82;
  max-width: 52ch;
  line-height: 1.65;
}


/* ── Masthead variant — with a background image (sector pages) ──────────── */

.page-masthead--has-image {
  isolation: isolate;
}

/* The overlay sits between the image and the copy */
.page-masthead--has-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(31, 31, 31, 0.72);
  z-index: 1;
}

/* Full-bleed background image, darkened by the overlay above */
.page-masthead__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.3;
  z-index: 0;
}

/* On has-image mastheads the container and watermark must clear the overlay */
.page-masthead--has-image .container,
.page-masthead--has-image::after {
  z-index: 2;
}


/* ── Breadcrumb ─────────────────────────────────────────────────────────── */

.breadcrumb {
  display: flex;
  gap: var(--space-1);
  align-items: center;
  font-size: var(--fs-small);
  color: rgba(242, 242, 242, 0.55);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.breadcrumb a {
  color: rgba(242, 242, 242, 0.55);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-opus);
}

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

.breadcrumb__sep {
  color: rgba(242, 242, 242, 0.3);
  margin: 0 0.25em;
  user-select: none;
}


/* ── Inner section — standard content block ─────────────────────────────── */

.inner-section {
  position: relative;
  padding-block: var(--space-7);
}

/* Dark surface variant */
.inner-section--dark {
  background: var(--opus-charcoal);
  color: var(--opus-mist);
}

.inner-section--dark h2,
.inner-section--dark h3 {
  color: var(--opus-white);
}

.inner-section--dark p {
  color: var(--opus-mist);
}

/* Soft (mist) surface variant */
.inner-section--soft {
  background: var(--surface-soft);
}


/* ── Inner two-column grid ──────────────────────────────────────────────── */

.inner-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

/* Weighted variant — 60/40 split */
.inner-cols--60-40 {
  grid-template-columns: 1.4fr 1fr;
}

@media (max-width: 768px) {
  .inner-cols,
  .inner-cols--60-40 {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}


/* ── Kit list — equipment/capability list ───────────────────────────────── */

.kit-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.kit-list li {
  position: relative;
  padding: var(--space-2) 0;
  padding-left: var(--space-3);
  border-bottom: var(--hairline);
  font-size: var(--fs-body);
}

/* On dark sections the hairline uses the dark variant */
.inner-section--dark .kit-list li {
  border-bottom: var(--hairline-dark);
}

/* Orange dash marker */
.kit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 2px;
  background: var(--accent);
  transform: translateY(-50%);
}


/* ── Pull-quote band — full-width standout quote ────────────────────────── */

.pull-quote-band {
  padding-block: var(--space-7);
  position: relative;
}

.pull-quote-band blockquote {
  font-weight: var(--fw-light);
  font-size: var(--fs-pull);
  line-height: 1.45;
  letter-spacing: -0.005em;
  max-width: 32ch;
  border-left: 3px solid var(--accent);
  padding-left: var(--space-4);
  margin: 0;
}

.pull-quote-band em {
  color: var(--accent);
  font-style: normal;
}


/* ── Stat row — three headline numbers in a row ─────────────────────────── */

.stat-row {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.stat-row__item {
  display: flex;
  flex-direction: column;
}

.stat-row__num {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: var(--fw-light);
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-row__label {
  font-size: var(--fs-small);
  color: var(--text-default);
  margin-top: var(--space-1);
  line-height: var(--lh-tight);
}


/* ── Service & maintenance band (bottom of sector pages) ────────────────── */

.service-maintenance-band {
  background: var(--opus-charcoal);
  color: var(--opus-mist);
  padding-block: var(--space-7);
  position: relative;
  overflow: hidden;
}

.service-maintenance-band .container {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-6);
  align-items: center;
}

.service-maintenance-band h2 {
  color: var(--opus-white);
  margin-top: var(--space-2);
}

.service-maintenance-band p {
  color: rgba(242, 242, 242, 0.78);
  margin-top: var(--space-3);
  max-width: 50ch;
}

.service-maintenance-band__cta {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
}

@media (max-width: 640px) {
  .service-maintenance-band .container {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .service-maintenance-band__cta {
    justify-content: flex-start;
  }
}


/* ── Centered section intro — used on closing CTAs and mission blocks ───── */

.section-intro--centered {
  text-align: center;
  max-width: 64ch;
  margin-inline: auto;
}

.section-intro--centered h2 {
  margin-bottom: var(--space-3);
}

.section-intro--centered .cta {
  margin-top: var(--space-4);
}


/* ── Comparison table — two-column "what changed / what stayed" ─────────── */

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-body);
}

.compare-table th {
  text-align: left;
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-bold);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: var(--accent);
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: 2px solid var(--accent);
}

.compare-table td {
  padding: var(--space-2) var(--space-2) var(--space-2) 0;
  border-bottom: var(--hairline);
  color: var(--text-default);
  vertical-align: top;
}

.compare-table tr:last-child td {
  border-bottom: none;
}

.inner-section--soft .compare-table td {
  color: var(--text-default);
}


/* ── Image band — dark section with background image ────────────────────── */

.image-band {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--opus-charcoal);
  padding-block: var(--space-7);
  color: var(--opus-white);
}

.image-band__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.28;
  z-index: -1;
}

.image-band .eyebrow {
  color: var(--accent);
}

.image-band h2 {
  color: var(--opus-white);
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
}

.image-band p {
  color: rgba(242, 242, 242, 0.78);
  max-width: 52ch;
}


/* ── Closing CTA section ────────────────────────────────────────────────── */

.closing-cta {
  padding-block: var(--space-7);
  text-align: center;
  background: var(--surface-soft);
}

.closing-cta h2 {
  font-weight: var(--fw-light);
  font-size: var(--fs-h1);
  color: var(--text-strong);
  max-width: 28ch;
  margin-inline: auto;
  margin-bottom: var(--space-4);
}


/* ── Sector installation stat (masthead badge) ──────────────────────────── */

.sector-install-stat {
  display: inline-block;
  margin-top: var(--space-4);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(242, 242, 242, 0.55);
}

.sector-install-stat strong {
  color: var(--accent, var(--opus-signal));
  font-weight: var(--fw-medium);
}

/* ── Last-reviewed note (closing CTA footer) ────────────────────────────── */

.sector-reviewed {
  display: block;
  margin-top: var(--space-4);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  opacity: 0.6;
}


/* ── FAQ accordion (sector pages) ─────────────────────────────────────── */

.faq-section {
  background: var(--surface-soft);
}

.faq-section h2 {
  font-weight: var(--fw-light);
  font-size: var(--fs-h2);
  color: var(--text-strong);
  margin-top: var(--space-2);
  margin-bottom: var(--space-5);
}

.faq-list {
  max-width: 72ch;
}

.faq-item {
  border-top: var(--hairline);
}

.faq-item:last-child {
  border-bottom: var(--hairline);
}

.faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) 0;
  font-size: 1rem;
  font-weight: var(--fw-medium);
  color: var(--text-strong);
  cursor: pointer;
  list-style: none;
  line-height: 1.45;
  user-select: none;
}

.faq-item__q::-webkit-details-marker {
  display: none;
}

/* Chevron indicator */
.faq-item__q::after {
  content: "+";
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--accent, var(--opus-signal));
  transition: transform 0.25s ease;
  line-height: 1;
}

.faq-item[open] > .faq-item__q::after {
  content: "−";
}

.faq-item__a {
  padding-bottom: var(--space-4);
}

.faq-item__a p {
  font-size: 0.9375rem;
  color: var(--text-default);
  line-height: 1.7;
  max-width: 68ch;
}