/* ================================================
   PHOTHESENSE MAIN STYLE (Bootstrap Enhanced)
================================================ */

/* ---------- HOME PAGE SPECIFIC ---------- */
body {
  height: 100%;
  background-color: #1C4278; /* nền xanh đậm riêng cho home */
  color: #fff;
  /* overflow-x: hidden;  // nếu cần thì bỏ comment */
}


.hero-header-main {
  height: 100vh;
  width: 100%;
  background: url('../picture/background.jpg') center/cover no-repeat fixed;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  text-align: center;
  position: relative;
  padding-top: 165.6px; 
  z-index: 1;
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.hero-content h1 {
  font-size: clamp(40px, 8vw, 90px);
  font-weight: 500;
  color: #FBDC47;
  letter-spacing: 8px;
}

.hero-content p {
  font-size: clamp(16px, 3vw, 28px);
  color: #FBDC47;
  margin-top: 15px;
  letter-spacing: 5px;
}

.explore-btn {
  display: inline-block;
  background-color: #e63946;
  color: white;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 14px 40px;
  border-radius: 40px;
  transition: 0.3s ease;
}

.explore-btn:hover {
  background-color: #c62828;
}

/* ---------- THREE COLUMNS (Use Bootstrap Grid) ---------- */
.three-columns {
  background-color: #1C4278;
  color: #fff;
  position: relative;
  z-index: 2;
}

.column h2 {
  font-family: 'Roboto Slab', serif;
  font-size: 28px;
  margin-bottom: 15px;
  color: #fff;
}

.column p {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 25px;
}

.image-placeholder {
  width: 100%;
  height: 540px;
  border-radius: 10px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
}

.image-placeholder:hover {
  transform: scale(1.05);
}

/* ---------- EXPERIENCES SECTION ---------- */
.three-experiences {
  background-color: #1C4278;
  color: #fff;
  position: relative;
  z-index: 2;
}

.experience-card {
  text-align: left;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
  min-height: 480px;
}

.experience-card h2 {
  font-family: 'Roboto Slab', serif;
  font-size: 26px;
  color: #FBDC47;
  margin-bottom: 15px;
}

.experience-card p {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  margin-bottom: 25px;
  color: #fff;
}

.experience-link .image-placeholder {
  height: 300px;
}


/* ---------- RESPONSIVE ---------- */

/* ---------- IPAD / TABLET ---------- */
@media  (max-width: 992px) {

  .hero-header-main{
    background-attachment: scroll;
    transform: translateZ(0);
  }
 
  .hero-content h1 {
    font-size: clamp(30px, 8vw, 60px);
    letter-spacing: 4px;
  }

  .hero-content p {
    font-size: clamp(14px, 3vw, 22px);
    letter-spacing: 2px;
  }

  .image-placeholder {
    height: 500px;             /* tối ưu cho tablet */
  }

  .experience-card {
    min-height: 450px;
  }
}