/**
 * ColorOverlay - Companion CSS
 *
 * Accent-colored caption overlays for images with hover (desktop)
 * and tap (mobile) reveal functionality.
 *
 * @version 1.0.0
 * @author Quinn Kacic-Midson
 */

/* ========================================
   FONT SIZE VARIABLES
   ======================================== */

:root {
  /* Desktop: Responsive with viewport scaling */
  --color-block-caption-size: max(0.80rem, 0.75vw);

  /* Mobile: Larger base with stronger viewport scaling */
  --color-block-caption-size-mobile: max(0.8rem, 3.4vw);
}

/* ========================================
   COLOR OVERLAY CONTAINER
   ======================================== */

.image-hover-wrapper {
  position: relative;
  display: block;
  overflow: hidden;
  --accent-color: var(--color-text);
}

.image-hover-wrapper img {
  display: block;
  width: 100%;
  height: auto;
  transition: opacity 0.6s ease;
}

/* ========================================
   ACCENT BAR (Left Edge)
   ======================================== */

.hover-accent-bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 24px;
  z-index: 10;
  transform-origin: top left;
  background-color: var(--accent-color);
  opacity: 0;
  transform: none;
  transition: none;
  pointer-events: none;
}

/* ========================================
   COLOR BLOCK (Caption)
   ======================================== */

.hover-color-block {
  position: absolute;
  width: clamp(160px, 37.125%, 360px);
  max-width: calc(100% - (var(--color-overlay-margin, 20px) * 2));
  bottom: var(--color-overlay-margin, 20px);
  right: var(--color-overlay-margin, 20px);
  z-index: 10;
  transform-origin: bottom right;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(10px, 1.6vw, 18px);
  background-color: var(--accent-color);
  color: #000;
  text-transform: none;
  letter-spacing: -0.01em;
  opacity: 0;
  transform: scale(0.95);
  transition: opacity 0.4s ease, transform 0.4s ease;
  will-change: transform, opacity;
  pointer-events: none;
}

.hover-color-block p {
  margin: 0;
  font-size: var(--color-block-caption-size, 0.7rem);
  font-weight: 400;
  line-height: 1.4;
}

.hover-color-block p strong {
  font-weight: 700;
  display: block;
  margin-bottom: max(4px, 0.6vw);
}

/* ========================================
   HOVER STATES (Desktop only)
   Using @media (hover: hover) to prevent sticky :hover on touch devices
   ======================================== */

@media (hover: hover) {
  .image-hover-wrapper:hover .hover-accent-bar {
    opacity: 1;
  }

  .image-hover-wrapper:hover .hover-color-block {
    opacity: 1;
    transform: scale(1);
  }
}

/* Focus-visible works on all devices for accessibility */
.image-hover-wrapper:focus-visible .hover-accent-bar {
  opacity: 1;
}

.image-hover-wrapper:focus-visible .hover-color-block {
  opacity: 1;
  transform: scale(1);
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.image-hover-wrapper:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 4px;
}

/* ========================================
   TAP-TO-SHOW STATE (Mobile)
   ======================================== */

/* 
 * The .show-overlay class is added by ColorOverlay.js 
 * when a user taps an image on mobile devices.
 * This provides an alternative to hover for touch interfaces.
 *
 * Supports two patterns:
 * 1. .show-overlay directly on .image-hover-wrapper
 * 2. .show-overlay on a parent element (e.g., .mobile-slide)
 */

/* Pattern 1: .show-overlay on the wrapper itself */
.image-hover-wrapper.show-overlay .hover-accent-bar {
  opacity: 1;
}

.image-hover-wrapper.show-overlay .hover-color-block {
  opacity: 1;
  transform: scale(1);
}

/* Pattern 2: .show-overlay on parent (for carousel slides) */
.show-overlay .image-hover-wrapper .hover-accent-bar,
.show-overlay>.image-hover-wrapper .hover-accent-bar {
  opacity: 1;
}

.show-overlay .image-hover-wrapper .hover-color-block,
.show-overlay>.image-hover-wrapper .hover-color-block {
  opacity: 1;
  transform: scale(1);
}

/* Mobile slideshow specific - ensure tap state wins over disabled hover */
@media (max-width: 767px) {

  .mobile-slide.show-overlay .image-hover-wrapper .hover-accent-bar,
  .mobile-slideshow-wrapper .mobile-slide.show-overlay .image-hover-wrapper .hover-accent-bar {
    opacity: 1;
    transform: none;
  }

  .mobile-slide.show-overlay .image-hover-wrapper .hover-color-block,
  .mobile-slideshow-wrapper .mobile-slide.show-overlay .image-hover-wrapper .hover-color-block {
    opacity: 1;
    transform: scale(1);
  }
}

/* ========================================
   MOBILE RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 768px) {
  .hover-color-block {
    right: clamp(12px, 4vw, 16px);
    bottom: clamp(12px, 4vw, 16px);
    padding: clamp(8px, 2.5vw, 14px);
    width: clamp(120px, 48vw, 240px);
  }

  .hover-color-block p {
    font-size: var(--color-block-caption-size-mobile, 0.65rem);
  }
}

/* ========================================
   REDUCED MOTION SUPPORT
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  .hover-color-block {
    transition: none;
  }

  .image-hover-wrapper img {
    transition: none;
  }
}