/* ==========================================================================
   Opus AV — Sectors index page styles  (image-overlay card overhaul)
   /sectors/index.html
   Cards are now full image-fill panels — text floats over a dark gradient.
   Never hard-code hex values — always reference tokens from tokens.css.
   ========================================================================== */


/* ── Masthead watermark ─────────────────────────────────────────────────── */

.page-masthead::after {
  background-image: url('../../logos/opus-av-bars-mark.svg');
}


/* ── Section wrapper ────────────────────────────────────────────────────── */

.sectors-grid-section {
  padding-block: var(--space-6) var(--space-8);
  background: var(--opus-charcoal);
  position: relative;
  overflow: hidden;
}

/* Ambient dots for this section — slightly stronger than the default */
.sectors-grid-section .ambient {
  opacity: 0.70;
}


/* ── Grid — two columns, tall aspect ratio ──────────────────────────────── */

.sectors-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px; /* tight seam between panels */
}

@media (max-width: 700px) {
  .sectors-grid {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}


/* ── Sector card — image fills card, text overlays via gradient ─────────── */

.sector-card {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  min-height: clamp(340px, 38vw, 520px);
  cursor: pointer;
  isolation: isolate;
}

/* Image — fills card completely */
.sector-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: -2;
  transition: transform 0.65s var(--ease-opus);
  transform-origin: center;
}

/* Hover: image scales up gently */
.sector-card:hover .sector-card__img {
  transform: scale(1.05);
}

/* Gradient overlay — dark at bottom, lighter at top */
.sector-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    to top,
    rgba(18, 18, 18, 0.88) 0%,
    rgba(18, 18, 18, 0.45) 50%,
    rgba(18, 18, 18, 0.10) 100%
  );
  transition: background var(--dur-base) var(--ease-opus);
}

/* On hover, deepen the overlay slightly so text stays readable */
.sector-card:hover::before {
  background: linear-gradient(
    to top,
    rgba(18, 18, 18, 0.94) 0%,
    rgba(18, 18, 18, 0.55) 55%,
    rgba(18, 18, 18, 0.15) 100%
  );
}

/* Sector accent colour line at bottom of card */
.sector-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--sector-accent, var(--accent));
  z-index: 2;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-opus);
}

.sector-card:hover::after {
  transform: scaleX(1);
}


/* ── Card body — text content over the gradient ─────────────────────────── */

.sector-card__body {
  position: relative;
  z-index: 1;
  padding: var(--space-5) var(--space-5) var(--space-5);
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sector-card__num {
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--ls-eyebrow);
  color: var(--sector-accent, var(--accent));
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  opacity: 0.9;
}

.sector-card h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.9rem);
  font-weight: var(--fw-light);
  color: var(--opus-white);
  line-height: 1.2;
  margin: 0;
  letter-spacing: -0.01em;
}

/* Paragraph — always visible */
.sector-card p {
  font-size: var(--fs-small);
  color: rgba(242, 242, 242, 0.80);
  line-height: 1.6;
  margin: 0;
  max-width: 46ch;
}

/* CTA link — always visible */
.sector-card .cta--link {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  margin-top: var(--space-1);
  font-size: var(--fs-small);
  font-weight: var(--fw-medium);
  color: var(--sector-accent, var(--accent));
  text-decoration: none;
  transition: gap var(--dur-fast) var(--ease-opus),
              color var(--dur-fast) var(--ease-opus);
}

/* Card hover (cover link above) triggers the arrow animation */
.sector-card:hover .cta--link {
  gap: 0.6em;
}

.sector-card .cta--link .cta__arrow {
  transition: transform var(--dur-fast) var(--ease-opus);
}

.sector-card:hover .cta--link .cta__arrow {
  transform: translateX(4px);
}

/* ── Cover link — entire card is clickable ──────────────────────────────── */
/* A transparent <a> sits at z-index 3, above the body (1) and accent (2).   */
/* Positioned relative to .sector-card (position: relative), so it covers    */
/* the whole card — image and body — not just the body area.                  */

.sector-card__link {
  position: absolute;
  inset: 0;
  z-index: 3;
}

@media (prefers-reduced-motion: reduce) {
  .sector-card__img,
  .sector-card::after {
    transition: none;
  }
}