/* ================================================================
   REGION.CSS — shared styles for all five region index pages
   /explore/css/region.css

   Each page's <style> block only needs:
     :root { --region-colour: ...; }
     .region-hero-bg { background-image: url('...'); }
     Any region-specific colour tokens (e.g. --flin-dark for Flinders)

   Everything else lives here.
   ================================================================ */


/* ================================================================
   REGION HERO
   ================================================================ */
.region-hero {
  position: relative;
  height: clamp(380px, 55vh, 580px);
  overflow: hidden;
  display: flex;
  align-items: flex-end;
}
.region-hero-bg {
  position: absolute; inset: 0; z-index: 0;
  background-size: cover; background-position: center 45%;
  transform: scale(1.04); transition: transform 8s ease;
}
.region-hero:hover .region-hero-bg { transform: scale(1); }

/* Embedded video hero (used on Adelaide & Fleurieu) */
.region-hero-video {
  position: absolute; inset: 0; z-index: 1;
  overflow: hidden; pointer-events: none;
}
.region-hero-video iframe {
  width: 177.78vh; height: 56.25vw;
  min-width: 100%; min-height: 100%;
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  border: none; pointer-events: none;
}
.region-hero-overlay {
  position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(to bottom,
    rgba(0,20,30,0.2) 0%,
    rgba(0,20,30,0.5) 55%,
    rgba(0,20,30,0.9) 100%);
}
.region-hero-content {
  position: relative; z-index: 3;
  max-width: 1320px; width: 100%; margin: 0 auto;
  padding: 0 2.5rem 2.5rem;
  animation: fadeUp 0.7s ease both;
}
.region-eyebrow {
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase;
  color: rgba(255,255,255,0.65); margin-bottom: 0.6rem;
}
.region-hero-h1 {
  font-family: var(--f-head);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700; color: #fff; line-height: 1.1; margin-bottom: 0.75rem;
  text-shadow: 0 2px 24px rgba(0,0,0,0.4);
}
.region-hero-sub {
  font-size: 1rem; font-weight: 300;
  color: rgba(255,255,255,0.82);
  max-width: 600px; line-height: 1.65;
}


/* ================================================================
   REGION STATS STRIP
   ================================================================ */
.region-stats {
  border-bottom: 3px solid rgba(255,255,255,0.2);
}
.region-stats-inner {
  max-width: 1320px; margin: 0 auto; padding: 0 2.5rem;
  display: flex; align-items: stretch;
}
.rst-item {
  display: flex; align-items: center; gap: 0.85rem;
  padding: 1rem 2rem; flex: 1;
  border-right: 1px solid rgba(255,255,255,0.1);
}
.rst-item:last-child { border-right: none; }
.rst-icon { font-size: 1.3rem; }
.rst-label {
  font-family: var(--f-label); font-size: 0.65rem;
  font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.45);
}
.rst-value {
  font-family: var(--f-label); font-size: 1rem;
  font-weight: 700; color: #fff; margin-top: 0.1rem;
}


/* ================================================================
   REGION INTRO — two-column layout with Paddle SA sidebar
   ================================================================ */
.region-intro-wrap {
  max-width: 1320px; margin: 0 auto;
  padding: 2.75rem 2.5rem 2rem;
}
.region-intro-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2.5rem; align-items: start;
  margin-bottom: 2rem;
}
.region-intro-text { margin-bottom: 2rem; }
.region-intro-text p {
  font-size: 0.97rem; line-height: 1.8; color: #3a4a40; margin-bottom: 1rem;
}
.region-intro-text p:last-child { margin-bottom: 0; }

/* Warning callout (Riverland, Flinders, Fleurieu) */
.region-warning {
  background: #fff8f0; border: 1px solid #e8c8a0;
  border-left: 4px solid var(--earth-2);
  border-radius: 6px; padding: 1rem 1.25rem;
  margin-bottom: 2rem;
}
.region-warning-head {
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--earth-1); margin-bottom: 0.4rem;
}
.region-warning p { font-size: 0.85rem; line-height: 1.65; color: #5a4030; margin: 0; }

/* Info callout (Murray, Fleurieu) */
.region-callout {
  background: #eaf4f8; border: 1px solid #b8d9e8;
  border-left: 4px solid var(--water-2);
  border-radius: 6px; padding: 1rem 1.25rem;
  margin-bottom: 2rem;
}
.region-callout-head {
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--water-1); margin-bottom: 0.4rem;
}
.region-callout p { font-size: 0.85rem; line-height: 1.65; color: #1a3a50; margin: 0; }

/* Paddle SA sidebar box */
.paddlesa-box {
  border: 1px solid var(--border); border-radius: 10px;
  overflow: hidden; background: #fff;
  box-shadow: 0 2px 12px rgba(0,62,81,0.06);
  position: sticky; top: 136px;
}
.paddlesa-box-head {
  background: var(--water-1); padding: 0.75rem 1.25rem;
  display: flex; align-items: center; gap: 0.6rem;
}
.paddlesa-box-head img { height: 28px; width: auto; }
.paddlesa-box-head span {
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.paddlesa-box-body { padding: 1.25rem; }
.paddlesa-logo-img { width: 100%; max-width: 200px; display: block; margin: 0 auto 1rem; }
.paddlesa-box-body p { font-size: 0.88rem; line-height: 1.7; color: #3a4a50; margin-bottom: 1.1rem; }
.paddlesa-box-body strong { color: var(--water-1); }
.paddlesa-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: var(--water-1); color: #fff;
  font-family: var(--f-label); font-size: 0.8rem;
  font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.6rem 1.1rem; border-radius: 5px;
  text-decoration: none; transition: background 0.18s;
}
.paddlesa-link:hover { background: #002938; }


/* ================================================================
   REGION AT A GLANCE CARD
   ================================================================ */
.region-info-card {
  border: 1px solid var(--border); border-radius: 10px;
  overflow: hidden; background: #fff;
  box-shadow: 0 2px 12px rgba(0,62,81,0.06);
}
.region-info-head {
  background: var(--water-1); color: #fff;
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase;
  padding: 0.65rem 1.5rem;
}
.region-info-body {
  display: grid; grid-template-columns: repeat(5, 1fr);
}
.ri-row {
  display: flex; flex-direction: column; gap: 0.3rem;
  padding: 1.1rem 1.4rem; border-right: 1px solid var(--border);
}
.ri-row:last-child { border-right: none; }
.ri-icon { font-size: 1.2rem; color: var(--region-colour); }
.ri-label {
  font-family: var(--f-label); font-weight: 700;
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink);
}
.ri-detail { color: var(--muted); line-height: 1.45; font-size: 0.82rem; }


/* ================================================================
   FILTER / SORT BAR
   ================================================================ */
.filter-bar {
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  background: var(--paper); padding: 0 2.5rem;
  position: sticky; top: 68px; z-index: 50;
}
.filter-bar-inner {
  max-width: 1320px; margin: 0 auto;
  display: flex; align-items: center; gap: 0.75rem;
  height: 52px; flex-wrap: nowrap; overflow-x: auto;
}
.filter-bar-inner::-webkit-scrollbar { display: none; }
.filter-label {
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--muted); flex-shrink: 0; margin-right: 0.5rem;
}
.filter-btn {
  font-family: var(--f-label); font-size: 0.75rem;
  font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.35rem 0.9rem; border-radius: 100px;
  border: 1px solid var(--border); background: #fff; color: var(--muted);
  cursor: pointer; transition: all 0.15s; white-space: nowrap; flex-shrink: 0;
}
.filter-btn:hover  { border-color: var(--region-colour); color: var(--region-colour); }
.filter-btn.active { background: var(--region-colour); border-color: var(--region-colour); color: #fff; }
.filter-divider { width: 1px; height: 20px; background: var(--border); flex-shrink: 0; margin: 0 0.25rem; }
.trail-count-label {
  font-family: var(--f-label); font-size: 0.72rem;
  font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); margin-left: auto; flex-shrink: 0;
}
.trail-count-label span { color: var(--ink); font-weight: 700; }


/* ================================================================
   TRAIL CARDS GRID
   ================================================================ */
.trails-grid-section {
  max-width: 1320px; margin: 0 auto;
  padding: 2.5rem 2.5rem 4rem;
}
.trails-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

/* Hover-video badge on trail cards */
.tc-video-wrap {
  position: absolute; inset: 0;
  opacity: 0; pointer-events: none;
  transition: opacity 0.35s ease; z-index: 2; background: #000;
}
.tc-video-frame { width: 100%; height: 100%; display: block; }
.tc-has-video:hover .tc-video-wrap  { opacity: 1; pointer-events: auto; }
.tc-has-video:hover .tc-img-fill    { opacity: 0; }
.tc-img-fill { transition: opacity 0.35s ease; }


/* ================================================================
   RESPONSIVE
   ================================================================ */

/* ── 1024px: tablet landscape ── */
@media (max-width: 1024px) {
  .region-info-body { grid-template-columns: repeat(3, 1fr); }
  .region-info-body .ri-row:nth-child(3) { border-right: none; }
  .region-info-body .ri-row:nth-child(4) { border-top: 1px solid var(--border); }
  .region-info-body .ri-row:nth-child(5) { border-top: 1px solid var(--border); border-right: none; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

/* ── 900px: intro layout collapses to single column ── */
@media (max-width: 900px) {
  .region-intro-layout { grid-template-columns: 1fr; }
  .paddlesa-box { position: static; }
}

/* ── 768px: mobile ── */
@media (max-width: 768px) {
  /* Utility bar */
  .util-bar { display: none; }

  /* Nav */
  .nav-inner    { padding: 0 1.25rem; height: 60px; }
  .nav-items    { display: none; }
  .nav-hamburger { display: block; }
  .nav-page-title { display: none; }

  /* Breadcrumb */
  .breadcrumb { padding: 0.55rem 1.25rem; }
  .breadcrumb-inner { flex-wrap: wrap; font-size: 0.75rem; }

  /* Hero */
  .region-hero { height: clamp(260px, 45vh, 400px); }
  .region-hero-content { padding: 0 1.25rem 1.5rem; }
  .region-hero-h1  { font-size: clamp(1.8rem, 7vw, 2.6rem); }
  .region-hero-sub { font-size: 0.9rem; }

  /* Stats strip — 2x2 grid */
  .region-stats-inner { flex-wrap: wrap; }
  .rst-item {
    flex: 1 0 50%;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    padding: 0.85rem 1.25rem;
  }
  .rst-item:nth-child(odd)  { border-right: 1px solid rgba(255,255,255,0.1); }
  .rst-item:nth-child(even) { border-right: none; }

  /* Intro */
  .region-intro-wrap { padding: 1.75rem 1.25rem 1.25rem; }
  .region-intro-text p { font-size: 0.92rem; }

  /* At a Glance card — 2-col */
  .region-info-body { grid-template-columns: 1fr 1fr; }
  .region-info-body .ri-row { border-right: none; border-bottom: 1px solid var(--border); }
  .region-info-body .ri-row:nth-child(odd) { border-right: 1px solid var(--border); }
  .region-info-body .ri-row:last-child { border-bottom: none; }
  .region-info-body .ri-row:nth-child(n+4) { border-top: none; }

  /* Callouts */
  .region-warning { padding: 0.85rem 1rem; }
  .region-callout { padding: 0.85rem 1rem; }

  /* Filter bar */
  .filter-bar   { padding: 0 1.25rem; top: 60px; }
  .filter-label { display: none; }
  .trail-count-label { font-size: 0.68rem; }

  /* Trail cards */
  .trails-grid-section { padding: 1.25rem 1.25rem 3rem; }
  .trails-grid { grid-template-columns: 1fr; gap: 1.1rem; }
  .tc-img   { height: 170px; }
  .tc-body  { padding: 0.95rem 1rem; }
  .tc-name  { font-size: 1.05rem; }
  .tc-desc  { font-size: 0.83rem; }
  .tc-footer { padding: 0.7rem 1rem; }

  /* Footer */
  .footer-inner  { grid-template-columns: 1fr; gap: 1.75rem; padding: 0 1.25rem 2rem; }
  .footer-bottom { flex-direction: column; gap: 0.35rem; padding: 1rem 1.25rem; font-size: 0.72rem; }
}

/* ── 480px: small phones ── */
@media (max-width: 480px) {
  /* Hide logo text, show icon only */
  .nav-logo .logo-text { display: none; }

  /* Hero */
  .region-hero-h1 { font-size: clamp(1.6rem, 8vw, 2rem); }

  /* At a Glance — single column */
  .region-info-body { grid-template-columns: 1fr; }
  .region-info-body .ri-row { border-right: none; border-bottom: 1px solid var(--border); }
  .region-info-body .ri-row:nth-child(odd) { border-right: none; }
  .region-info-body .ri-row:last-child { border-bottom: none; }

  /* Stats strip — single column */
  .rst-item { flex: 1 0 100%; border-right: none !important; }

  /* Trail cards */
  .tc-img { height: 155px; }

  /* Drawer */
  .drblock-name { font-size: 1rem; }

  /* Filter bar */
  .filter-bar-inner { gap: 0.5rem; }
  .filter-btn { font-size: 0.68rem; padding: 0.3rem 0.65rem; }
}