/* =============================================================
   Interactive Embed — Reusable fullscreen takeover component
   Any project with an `interactive` front-matter param gets
   a preview canvas + fullscreen iframe overlay.
   ============================================================= */

/* ---------------------------------------------------------------
   Preview container: faked canvas with play button
--------------------------------------------------------------- */

.ie-preview {
  position: relative;
  width: 100%;
  max-width: 820px;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  margin: 1.5rem 0 2rem;
  background: linear-gradient(135deg, #e8f0e4 0%, #d4e8d0 40%, #c5dcc0 100%);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--bg-deep);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

.ie-preview:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

@media (hover: none) {
  .ie-preview:hover {
    box-shadow: var(--shadow-card);
    transform: none;
  }
}

/* Subtle grid pattern overlay for the preview */
.ie-preview::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgb(var(--brand-rgb) / 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 1;
}

/* Play button */
.ie-preview__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgb(var(--brand-rgb) / 0.9);
  border: 3px solid rgb(255 255 255 / 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 4px 20px rgb(0 0 0 / 0.15),
    0 0 0 0 rgb(var(--brand-rgb) / 0.3);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.ie-preview__play svg {
  width: 28px;
  height: 28px;
  fill: #fff;
  margin-left: 4px; /* optical center for play triangle */
}

.ie-preview:hover .ie-preview__play {
  transform: translate(-50%, -50%) scale(1.08);
  box-shadow:
    0 6px 28px rgb(0 0 0 / 0.2),
    0 0 0 8px rgb(var(--brand-rgb) / 0.15);
  background: var(--brand);
}

.ie-preview__label {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  font-family: "Saira Extra Condensed", sans-serif;
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand-dark);
  opacity: 0.6;
}

/* Decorative elements scattered on the preview */
.ie-preview__deco {
  position: absolute;
  font-size: 1.6rem;
  opacity: 0.12;
  z-index: 1;
  pointer-events: none;
  user-select: none;
}

.ie-preview__deco:nth-child(2) { top: 18%; left: 14%; transform: rotate(-15deg); }
.ie-preview__deco:nth-child(3) { top: 30%; right: 18%; transform: rotate(25deg); }
.ie-preview__deco:nth-child(4) { bottom: 22%; left: 22%; transform: rotate(10deg); }
.ie-preview__deco:nth-child(5) { bottom: 30%; right: 12%; transform: rotate(-20deg); }

/* ---------------------------------------------------------------
   Fullscreen takeover overlay
--------------------------------------------------------------- */

.ie-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  pointer-events: none;
}

.ie-overlay.is-active {
  display: block;
  pointer-events: auto;
}

/* White backdrop fades in behind the iframe */
.ie-overlay__backdrop {
  position: absolute;
  inset: 0;
  background: #fff;
  opacity: 0;
  transition: opacity 0.7s ease;
}

.ie-overlay.is-expanded .ie-overlay__backdrop {
  opacity: 1;
}

/* The interactive iframe — animates from preview rect to fullscreen */
.ie-overlay__frame {
  position: absolute;
  border: 0;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 48px rgb(0 0 0 / 0.12);
  opacity: 0;
  transition:
    top 0.75s cubic-bezier(0.4, 0, 0.2, 1),
    left 0.75s cubic-bezier(0.4, 0, 0.2, 1),
    width 0.75s cubic-bezier(0.4, 0, 0.2, 1),
    height 0.75s cubic-bezier(0.4, 0, 0.2, 1),
    border-radius 0.55s ease,
    opacity 0.5s ease;
}

.ie-overlay.is-expanded .ie-overlay__frame {
  opacity: 1;
  border-radius: 0;
  box-shadow: none;
}

/* Close button */
.ie-overlay__close {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 10001;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgb(var(--brand-rgb) / 0.85);
  border: 2px solid rgb(255 255 255 / 0.3);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.35s ease 0.5s, transform 0.35s ease 0.5s, background 0.15s ease;
  box-shadow: 0 2px 12px rgb(0 0 0 / 0.2);
}

.ie-overlay__close svg {
  width: 18px;
  height: 18px;
  fill: #fff;
}

.ie-overlay.is-expanded .ie-overlay__close {
  opacity: 1;
  transform: scale(1);
}

.ie-overlay__close:hover {
  background: var(--brand);
}

/* ---------------------------------------------------------------
   Hide site chrome when fullscreen interactive is open
   The body class .ie-fullscreen-active is toggled by JS.
--------------------------------------------------------------- */

/* Sidebar nav */
.ie-fullscreen-active #sideNav {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

/* Background controls (bottom-right play/pause/randomize) */
.ie-fullscreen-active #bg-controls {
  opacity: 0 !important;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

/* Field controls panel */
.ie-fullscreen-active #field-controls {
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

/* Background canvas */
.ie-fullscreen-active #bg-field {
  opacity: 0;
  transition: opacity 0.5s ease;
}

/* Name physics field canvas */
.ie-fullscreen-active #name-field {
  opacity: 0;
  transition: opacity 0.5s ease;
}

/* Restore all when closing (reverse) */
#sideNav,
#bg-controls,
#field-controls,
#bg-field,
#name-field {
  transition: opacity 0.5s ease;
}

/* ---------------------------------------------------------------
   Accessibility: reduced motion
--------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  .ie-preview {
    transition: none;
  }
  .ie-preview__play {
    transition: none;
  }
  .ie-overlay__backdrop {
    transition: opacity 0.1s ease;
  }
  .ie-overlay__frame {
    transition: opacity 0.1s ease;
  }
  .ie-overlay__close {
    transition: opacity 0.1s ease;
  }
  .ie-fullscreen-active #sideNav,
  .ie-fullscreen-active #bg-controls,
  .ie-fullscreen-active #field-controls,
  .ie-fullscreen-active #bg-field,
  .ie-fullscreen-active #name-field {
    transition: none;
  }
}

/* ---------------------------------------------------------------
   Mobile overrides
--------------------------------------------------------------- */

@media (max-width: 767px) {
  .ie-preview__play {
    width: 64px;
    height: 64px;
  }
  .ie-preview__play svg {
    width: 22px;
    height: 22px;
  }
  .ie-overlay__close {
    top: 10px;
    right: 10px;
    width: 42px;
    height: 42px;
  }
  .ie-overlay__close svg {
    width: 16px;
    height: 16px;
  }
}