/* =============================================
   Instagram Slider Feed — Frontend Styles
   ============================================= */

:root {
  --isf-gap: 3px;
  --isf-radius: 0px;
  --isf-overlay-bg: linear-gradient(to top, rgba(0,0,0,.75) 0%, transparent 60%);
  --isf-arrow-size: 44px;
  --isf-arrow-bg: rgba(255,255,255,.9);
  --isf-arrow-color: #111;
  --isf-dot-size: 8px;
  --isf-dot-color: rgba(0,0,0,.25);
  --isf-dot-active: #000000;
  --isf-transition: .35s cubic-bezier(.4,0,.2,1);
}

/* ---- Outer wrapper ---- */
.isf-feed-wrap {
  position: relative;
  width: 100%;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

/* ---- Track ---- */
.isf-track-wrap { overflow: hidden; width: 100%; }

.isf-track {
  display: flex;
  transition: transform var(--isf-transition);
  will-change: transform;
}

/* ---- Individual slides ---- */
.isf-slide {
  flex: 0 0 auto;
  box-sizing: border-box;
  padding: 0 calc(var(--isf-gap) / 2);
}

/* ---- Post card ---- */
.isf-post {
  position: relative;
  border-radius: var(--isf-radius);
  overflow: hidden;
  background: #f0f0f0;
  cursor: pointer;
}

.isf-post__link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.isf-post__thumb {
  position: relative;
  width: 100%;
  padding-bottom: 125%; /* 4:5 Instagram portrait */
  overflow: hidden;
}

.isf-post__thumb img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
  display: block;
}

.isf-post:hover .isf-post__thumb img {
  transform: scale(1.05);
}

/* ---- Video icon ---- */
.isf-post__video-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,.5);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

/* ---- Overlay ---- */
.isf-post__overlay {
  position: absolute;
  inset: 0;
  background: var(--isf-overlay-bg);
  opacity: 0;
  transition: opacity var(--isf-transition);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 14px;
  box-sizing: border-box;
}

.isf-post:hover .isf-post__overlay { opacity: 1; }

.isf-post__caption {
  margin: 0 0 6px;
  font-size: 13px;
  line-height: 1.4;
  color: #fff;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.isf-post__cta {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,.85);
  text-transform: uppercase;
  letter-spacing: .05em;
}

/* ---- Arrows ---- */
.isf-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: var(--isf-arrow-size);
  height: var(--isf-arrow-size);
  background: var(--isf-arrow-bg);
  border: none;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--isf-arrow-color);
  box-shadow: 0 2px 8px rgba(0,0,0,.18);
  transition: background .2s, opacity .2s;
  padding: 0;
}

.isf-arrow:hover  { background: #fff; }
.isf-arrow:focus  { outline: 2px solid #4a90e2; outline-offset: 2px; }
.isf-arrow.isf-disabled { opacity: .3; pointer-events: none; }
.isf-arrow-prev { left: 6px; }
.isf-arrow-next { right: 6px; }

/* ---- Dots ---- */
.isf-dots {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.isf-dot {
  width: var(--isf-dot-size);
  height: var(--isf-dot-size);
  border-radius: 50%;
  background: var(--isf-dot-color);
  border: none;
  padding: 0;
  cursor: pointer;
  transition: background .2s, transform .2s;
}

.isf-dot:hover   { background: rgba(0,0,0,.4); transform: scale(1.2); }
.isf-dot.isf-active { background: var(--isf-dot-active); transform: scale(1.25); }
.isf-dot:focus { outline: 2px solid #4a90e2; outline-offset: 2px; }

/* ---- Grid layout ---- */
.isf-grid-mode .isf-track {
  flex-wrap: wrap;
  transform: none !important;
}

.isf-grid-mode .isf-track-wrap { overflow: visible; }
.isf-grid-mode .isf-arrow,
.isf-grid-mode .isf-dots { display: none; }

/* ---- Lightbox ---- */
.isf-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.isf-lightbox[hidden] { display: none; }

.isf-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.88);
  cursor: pointer;
}

.isf-lightbox__inner {
  position: relative;
  z-index: 1;
  max-width: min(90vw, 900px);
  width: 100%;
  animation: isfLightboxIn .25s ease;
}

@keyframes isfLightboxIn {
  from { opacity: 0; transform: scale(.93); }
  to   { opacity: 1; transform: scale(1); }
}

.isf-lightbox__close {
  position: absolute;
  top: -44px;
  right: 0;
  background: rgba(255,255,255,.15);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  transition: background .2s;
  padding: 0;
}

.isf-lightbox__close:hover { background: rgba(255,255,255,.3); }
.isf-lightbox__close:focus { outline: 2px solid #fff; }

.isf-lightbox__media img,
.isf-lightbox__media video {
  display: block;
  max-width: 100%;
  max-height: 80vh;
  margin: 0 auto;
  border-radius: 6px;
  object-fit: contain;
}

.isf-lightbox__footer {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.isf-lightbox__caption {
  margin: 0;
  color: rgba(255,255,255,.85);
  font-size: 14px;
  line-height: 1.5;
  text-align: center;
}

.isf-lightbox__ig-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  border-radius: 20px;
  text-decoration: none;
  transition: opacity .2s;
}

.isf-lightbox__ig-link:hover { opacity: .85; color: #fff; }

/* ---- Error state (admin only) ---- */
.isf-error {
  padding: 12px 16px;
  background: #fef2f2;
  border: 1px solid #fca5a5;
  border-radius: 6px;
  color: #b91c1c;
  font-size: 14px;
}

/* Slide widths are set by JS in px — no CSS percentages needed */
@media (max-width: 480px) {
  .isf-arrow { display: none; }
}