/* ============================================================
   BGS Projects - simple reference-style gallery
   ============================================================ */

:root {
  --project-title-bar-bg: #e8eef7;
  --project-title-bar-text: var(--primary-dark);
}

.projects-page {
  background: #fff;
}

.projects-hero {
  max-width: 1180px;
  height: 440px;
  margin: 0 auto;
  position: relative;
  background: #e8e8e8 center / cover no-repeat;
}

.projects-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .08);
}

.projects-hero-title {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  min-width: min(470px, calc(100% - 40px));
  background: rgba(0, 0, 0, .55);
  color: #fff;
  text-align: center;
  padding: 20px 28px;
}

.projects-hero-title h1 {
  color: #fff;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1;
  margin: 0 0 8px;
  letter-spacing: 0;
  text-transform: uppercase;
}

.projects-hero-title p {
  margin: 0;
  color: rgba(255, 255, 255, .88);
  font-size: 18px;
  letter-spacing: 0;
  text-transform: uppercase;
}

.projects-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 50px 20px 72px;
}

.projects-heading {
  color: #111;
  text-align: center;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.15;
  margin: 0 0 40px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 42px 18px;
}

.project-card {
  text-align: center;
}

.project-cover {
  display: block;
  aspect-ratio: 1 / 1;
  background: #e9e9e9;
  overflow: hidden;
}

.project-cover img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: opacity .18s ease, transform .18s ease;
}

.project-cover:hover img {
  opacity: .86;
  transform: scale(1.025);
}

.project-cover-placeholder {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #b5b5b5;
  font-size: 36px;
}

.project-title {
  color: #222;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
  margin: 16px 8px 0;
}

.project-title a {
  color: inherit;
  text-decoration: none;
}

.projects-state {
  grid-column: 1 / -1;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #777;
  text-align: center;
}

.projects-state i {
  color: var(--primary);
  font-size: 32px;
}

.project-detail-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 190px 20px 90px;
}

.project-detail-title {
  position: relative;
  overflow: hidden;
  width: 100%;
  background: linear-gradient(135deg, #c5d8f5 0%, #e8eff9 60%, #f0f5fc 100%);
  color: var(--project-title-bar-text);
  text-align: center;
  font-family: var(--font-thai);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0;
  padding: 8px 16px 10px;
  border: 1px solid rgba(0, 48, 135, 0.10);
  margin: 0 0 78px;
}

.project-detail-title::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,48,135,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,48,135,0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
}

.project-gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.project-gallery-item {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #ececec;
}

.project-gallery-item img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: opacity .18s ease, transform .18s ease;
}

.project-gallery-item:hover img {
  opacity: .88;
  transform: scale(1.025);
}

.project-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, .86);
  padding: 28px;
}

.project-lightbox.open {
  display: flex;
}

.project-lightbox img {
  max-width: min(1100px, 100%);
  max-height: 86vh;
  object-fit: contain;
}

.project-lightbox button {
  position: absolute;
  border: none;
  background: rgba(255, 255, 255, .95);
  color: #222;
  cursor: pointer;
}

.project-lightbox-close {
  top: 18px;
  right: 18px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 20px;
}

.project-lightbox-prev,
.project-lightbox-next {
  top: 50%;
  width: 44px;
  height: 56px;
  transform: translateY(-50%);
  font-size: 22px;
}

.project-lightbox-prev { left: 18px; }
.project-lightbox-next { right: 18px; }

@media (max-width: 900px) {
  .projects-hero {
    height: 340px;
  }

  .projects-grid,
  .project-gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .project-detail-title {
    margin-bottom: 46px;
  }
}

@media (max-width: 620px) {
  .projects-hero {
    height: 260px;
  }

  .projects-hero-title {
    padding: 16px 18px;
  }

  .projects-hero-title p {
    font-size: 14px;
  }

  .projects-grid,
  .project-gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .projects-shell {
    padding-top: 36px;
  }

  .project-detail-shell {
    padding-top: 150px;
  }
}