/* ============================================================
   HEI Campaign Grid Block – Frontend Styles
   ============================================================ */

:root {
  --hei-accent:   #C0392B;
  --hei-tab-bg:   #F2F2F0;
  --hei-tab-text: #2C3E50;
}

.hei-campaign-grid {
  --tile-radius: 4px;
  --overlay-bg: linear-gradient(to top, rgba(10,20,30,.85) 0%, rgba(10,20,30,.3) 55%, transparent 100%);
  --transition: 0.22s ease;
  font-family: inherit;
  max-width: 100%;
  overflow: hidden;
}

/* ── Grid shell ─────────────────────────────────────────── */
.hei-grid-main {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  background: #0d1b2a;
}

@media (min-width: 900px) {
  .hei-grid-main {
    grid-template-columns: 1fr 1fr;
    min-height: 420px;
  }
}

/* ── Secondary 2×2 sub-grid ─────────────────────────────── */
.hei-grid-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

/* ── Base tile ──────────────────────────────────────────── */
.hei-tile {
  position: relative;
  overflow: hidden;
  border-radius: var(--tile-radius);
  background: #1a2a3a;
  cursor: pointer;
}

.hei-tile__img-link {
  display: block;
  width: 100%;
  height: 100%;
}

.hei-tile__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition), filter var(--transition);
  will-change: transform;
}

.hei-tile:hover .hei-tile__img {
  transform: scale(1.04);
  filter: brightness(0.88);
}

/* ── Hero tile specifics ────────────────────────────────── */
.hei-tile--hero {
  min-height: 280px;
}

@media (min-width: 900px) {
  .hei-tile--hero {
    min-height: 420px;
  }
}

/* ── Small tile specifics ───────────────────────────────── */
.hei-tile--small {
  min-height: 136px;
}

@media (min-width: 900px) {
  .hei-tile--small {
    min-height: 207px;
  }
}

/* ── Overlay content ────────────────────────────────────── */
.hei-tile__overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay-bg);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px 16px 20px;
  color: #fff;
}

/* ── Location label ─────────────────────────────────────── */
.hei-tile__location {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  line-height: 1;
  margin-bottom: 6px;
  display: block;
}

/* ── Title ──────────────────────────────────────────────── */
.hei-tile__title {
  margin: 0 0 10px;
  line-height: 1.25;
}

.hei-tile__title a {
  color: #fff;
  text-decoration: none;
  display: block;
}

.hei-tile__title a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.hei-tile--hero .hei-tile__title {
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
}

.hei-tile__title--sm {
  font-size: clamp(13px, 1.8vw, 16px);
  font-weight: 600;
  margin-bottom: 8px;
}

/* ── Progress bar ───────────────────────────────────────── */
.hei-tile__progress {
  width: 100%;
  height: 4px;
  background: rgba(255,255,255,0.25);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 4px;
}

.hei-tile__progress-bar {
  height: 100%;
  background: var(--hei-accent);
  border-radius: 2px;
  transition: width 0.6s ease;
}

.hei-tile__progress-label {
  font-size: 10px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 10px;
  display: block;
}

/* ── Donate button ──────────────────────────────────────── */
.hei-tile__btn {
  display: inline-block;
  padding: 7px 18px;
  background: var(--hei-accent);
  color: #fff !important;
  border-radius: 3px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: background var(--transition), opacity var(--transition);
  align-self: flex-start;
  /* Hidden by default, reveal on hover */
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition), background var(--transition);
}

.hei-tile:hover .hei-tile__btn,
.hei-tile:focus-within .hei-tile__btn {
  opacity: 1;
  transform: translateY(0);
}

.hei-tile__btn:hover {
  background: #a93226;
}

.hei-tile__btn--sm {
  font-size: 11px;
  padding: 5px 12px;
}

/* ── Filter / Category bar ──────────────────────────────── */
.hei-filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  background: var(--hei-tab-bg);
  padding: 2px 12px;
  border-top: 1px solid rgba(0,0,0,0.08);
}

.hei-filter-bar__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--hei-tab-text);
  padding: 12px 10px 12px 0;
  white-space: nowrap;
  flex-shrink: 0;
}

.hei-filter-bar__tab {
  font-size: 13px;
  font-weight: 600;
  color: var(--hei-tab-text);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 12px 14px;
  line-height: 1;
  transition: color var(--transition), border-bottom-color var(--transition);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.hei-filter-bar__tab:hover {
  color: var(--hei-accent);
}

.hei-filter-bar__tab--active {
  color: var(--hei-accent);
  border-bottom-color: var(--hei-accent);
}

.hei-filter-bar__see-all {
  font-size: 12px;
  font-weight: 700;
  color: var(--hei-tab-text);
  text-decoration: none;
  padding: 12px 14px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-left: auto;
  white-space: nowrap;
}

.hei-filter-bar__see-all:hover {
  color: var(--hei-accent);
}

/* ── Transition for tab switching ───────────────────────── */
.hei-grid-main {
  transition: opacity 0.18s ease;
}

/* ── Responsive: stack on small screens ─────────────────── */
@media (max-width: 599px) {
  .hei-grid-secondary {
    grid-template-columns: 1fr;
  }

  .hei-tile__btn {
    opacity: 1;
    transform: none;
  }

  .hei-filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 0 8px;
    -webkit-overflow-scrolling: touch;
  }

  .hei-filter-bar__see-all {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hei-tile__img,
  .hei-tile__btn,
  .hei-grid-main {
    transition: none;
  }
}