/* ============================================================
   GIOITHIEU.CSS – Section Giới Thiệu (banner xanh 2 cột)
   ============================================================ */

#gioithieu {
  background: #149045;           /* nền xanh lá như ảnh */
  position: relative;
  padding: 0 6vw 56px;
  overflow: visible;
}

/* ── 2 CỘT: ảnh trái + nội dung phải ── */
.gt-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  padding-top: 40px;
}

/* ── ẢNH TRÁI ── */
.gt-img-wrap {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255,255,255,.12);
  /* ảnh nhô lên trên section một chút */
  margin-top: -20px;
}

.gt-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: 16px;
  transition: transform var(--transition);
}

.gt-img-wrap:hover .gt-img {
  transform: scale(1.03);
}

.gt-img-placeholder {
  display: none;
  min-height: 320px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  font-size: 2.5rem;
  background: rgba(255,255,255,.1);
  border-radius: 16px;
}

.gt-placeholder-text {
  font-size: .78rem;
  color: rgba(255,255,255,.7);
}

/* ── NỘI DUNG PHẢI ── */
.gt-content {
  padding: 1rem 0;
}

.gt-label {
  font-size: 2rem;
  font-weight: 700;
  color: #242635;
  margin-bottom: .4rem;
  line-height: 1.4;
}

.gt-title {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 1.2rem;
}

.gt-desc {
  font-size: .88rem;
  color: #FFFFFF;
  line-height: 1.5;
  max-width: 480px;
}

/* ── LOGO TRÒN GIỮA DƯỚI ── */

.gt-banner-image {
  position: absolute;
  bottom: -36px;
  left: 50%;
  transform: translateX(-50%);
  width: 85px;
  height: 85px;
  border-radius: 50%;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
  z-index: 10;
  overflow: hidden;

  /* animation */
  animation: gtRotate 12s linear infinite;
}
/* KEYFRAME */

@keyframes gtRotate {
  from {
    transform: translateX(-50%) rotate(0deg);
  }

  to {
    transform: translateX(-50%) rotate(400deg);
  }
}

.gt-logo-img {
  object-fit: cover;
  width: 56px;
  height: 56px;
  object-fit: contain;
  border-radius: 50%;
}

.gt-logo-fallback {
  font-size: 2rem;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  #gioithieu { padding: 0 5vw 48px; }

  .gt-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 32px;
  }

  .gt-img-wrap { margin-top: 0; }

  .gt-title { font-size: 1.5rem; }

  .gt-logo-circle {
    width: 60px; height: 60px;
    bottom: -30px;
  }
  .gt-logo-img { width: 46px; height: 46px; }
}