:root {
  --hydrolarm-bg: #f8fafc;
  --hydrolarm-surface: #ffffff;
  --hydrolarm-tone: #0284c7;
  --hydrolarm-tone-hover: #0369a1;
  --hydrolarm-ink: #1e293b;
  --hydrolarm-accent-strip: #06b6d4;
  --hydrolarm-border: #e2e8f0;
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Poppins', sans-serif;
}

body.hydrolarm-viewport {
  background-color: var(--hydrolarm-bg);
  color: var(--hydrolarm-ink);
  font-family: var(--font-body);
  margin: 0;
  padding: 0;
}

/* Header style Preset A: accent strip below */
header.ocular-topbar {
  background-color: var(--hydrolarm-surface);
  border-bottom: 4px solid var(--hydrolarm-accent-strip);
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.05);
}

.ocular-brandmark {
  font-family: var(--font-display);
  color: var(--hydrolarm-ink);
  font-size: 0.95rem;
  line-height: 1.4;
  text-transform: uppercase;
}

.ocular-product-heading {
  font-family: var(--font-display);
  text-transform: uppercase;
  color: var(--hydrolarm-ink);
}

/* CSS Pure Image Gallery Control */
.gallery-toggle-radio {
  display: none;
}

.ocular-slide-frame {
  display: none;
  width: 100%;
  height: 100%;
}

/* Switch slide based on checked radio */
#slide-dot-1:checked ~ .ocular-viewport-box .slide-frame-1,
#slide-dot-2:checked ~ .ocular-viewport-box .slide-frame-2,
#slide-dot-3:checked ~ .ocular-viewport-box .slide-frame-3,
#slide-dot-4:checked ~ .ocular-viewport-box .slide-frame-4 {
  display: block;
}

/* Thumbnails feedback */
.thumb-trigger {
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
  border-radius: 6px;
  overflow: hidden;
}

.thumb-trigger:hover {
  transform: translateY(-2px);
}

#slide-dot-1:checked ~ .ocular-thumbs-track label[for="slide-dot-1"] img,
#slide-dot-2:checked ~ .ocular-thumbs-track label[for="slide-dot-2"] img,
#slide-dot-3:checked ~ .ocular-thumbs-track label[for="slide-dot-3"] img,
#slide-dot-4:checked ~ .ocular-thumbs-track label[for="slide-dot-4"] img {
  border-color: var(--hydrolarm-tone);
  box-shadow: 0 0 0 2px var(--hydrolarm-tone);
}

/* CTA Pill button (Preset A) */
.ocular-call-link {
  background-color: var(--hydrolarm-tone);
  color: #ffffff;
  border-radius: 999px;
  box-shadow: 0 4px 6px -1px rgba(2, 132, 199, 0.3), 0 2px 4px -2px rgba(2, 132, 199, 0.2);
  text-decoration: none;
  font-family: var(--font-display);
}

.ocular-call-link:hover {
  background-color: var(--hydrolarm-tone-hover);
  box-shadow: 0 10px 15px -3px rgba(2, 132, 199, 0.4), 0 4px 6px -4px rgba(2, 132, 199, 0.2);
  transform: translateY(-1px);
}

/* Reviews block: Left colored border 4px (Preset A) */
.feedback-entry {
  border-left: 4px solid var(--hydrolarm-tone);
  border-radius: 4px;
  background-color: var(--hydrolarm-surface);
}

/* Responsive adjustments */
@media (max-width: 640px) {
  .ocular-brandmark {
    font-size: 0.8rem;
  }
}