/* ============================================================
   PROJECTS.CSS – Section Dự Án Tiêu Biểu
   ============================================================ */

#projects {
  padding: 10px 6vw;
  background: var(--white);
}

/* ── HEADER ── */
.proj-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.proj-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
  color: #2d9e5f;
}

/* ── GRID: 3 cột × 2 hàng ── */
.proj-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}

/* ── CARD ── */
.proj-card {
  border-radius: 14px;
  overflow: hidden;
  cursor: pointer;
  background: #000;              /* nền đen để ảnh contain không bị lộ viền trắng */
}

.proj-card-inner {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  overflow: hidden;
  background: #111;
}

/* ── ẢNH: giữ nguyên tỷ lệ, không cắt ── */
.proj-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;             /* fill đầy card */
  object-position: center;
  display: block;
  transition: transform .45s ease;
}

.proj-card:hover .proj-card-img {
  transform: scale(1.05);
}

/* ── PLACEHOLDER ── */
.proj-card-placeholder {
  display: none;
  position: absolute;
  inset: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  background: #d6edd9;
  font-size: 2rem;
  border-radius: 14px;
}

.proj-placeholder-text {
  font-size: .72rem;
  color: #5a8a6a;
  text-align: center;
  padding: 0 1rem;
}

/* ── GRADIENT OVERLAY ── */
.proj-card-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 2.5rem 1rem .85rem;
  background: linear-gradient(
    to top,
    rgba(0,0,0,.72) 0%,
    rgba(0,0,0,.25) 60%,
    transparent    100%
  );
  border-radius: 0 0 14px 14px;
  display: flex;
  align-items: flex-end;
}

/* ── LABEL ── */
.proj-card-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /* QUAN TRỌNG */
  width: 100%;
  height: 10%;
  box-sizing: border-box;
  
  text-align: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  text-shadow: 0 1px 6px rgba(0,0,0,.5);
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .proj-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
}

@media (max-width: 480px) {
  #projects { padding: 48px 5vw; }
  .proj-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }
}