/* ================= HERO ================= */

.inst-hero{
  position:relative;
  height:420px;
  background:url("../images/campus9.jpeg") center/cover no-repeat;
  display:flex;
  align-items:center;
  justify-content:center;
}

/* blue overlay */
.inst-hero::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(rgba(8,40,70,.75),rgba(8,40,70,.85));
  backdrop-filter:blur(2px);
}

/* hero text */
.inst-hero-content{
  position:relative;
  text-align:center;
  color:#fff;
  z-index:2;
}
.inst-breadcrumb{
  font-size:14px;
  font-weight:600;
  letter-spacing:.4px;
}

.inst-breadcrumb a{
  color:#f4a62a;
  text-decoration:none;
  transition:.25s;
}

.inst-breadcrumb a:hover{
  color:#ffd27a;
}

.inst-breadcrumb span{
  color:#fff;
}
.inst-breadcrumb{
  color:#f4a62a;
  font-size:14px;
  font-weight:600;
  margin-bottom:10px;
  letter-spacing:.4px;
}

.inst-hero h1{
  font-family:'Montserrat',sans-serif;
  font-size:clamp(2.4rem,4vw,3.2rem);
  font-weight:800;
  letter-spacing:.3px;
}

/* ================= INTRO FLOAT CARD ================= */

.inst-intro{
  background:#f4f6f9;
  padding-bottom:70px;
}

.inst-intro-card{
  position:relative;
  max-width:1000px;
  margin:-110px auto 0;
  background:#fff;
  border-radius:14px;
  padding:55px 60px;
  text-align:center;
  box-shadow:0 30px 70px rgba(0,0,0,.12);
}

/* accent line */
.inst-intro-card::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:120px;
  height:5px;
  border-radius:0 0 6px 6px;
  background:linear-gradient(90deg,#f39c12,#ffcf66);
}

.inst-tag{
  font-size:13px;
  letter-spacing:1.5px;
  color:#f39c12;
  font-weight:700;
  margin-bottom:14px;
}

.inst-intro-card h2{
  font-family:'Montserrat',sans-serif;
  font-size:clamp(2rem,3vw,2.6rem);
  font-weight:800;
  color:#123e6d;
  margin-bottom:18px;
}

.inst-intro-card p{
  font-size:16px;
  line-height:1.8;
  color:#4b5563;
  max-width:760px;
  margin:0 auto;
}

/* ================= SECTION TITLE ================= */

.section-title{
  text-align:center;
  font-family:'Montserrat',sans-serif;
  font-size:40px;
  font-weight:800;
  color:#0f3d6b;
  margin-bottom:50px;
  position:relative;
  padding-bottom:12px;
}

.section-title::after{
  content:"";
  position:absolute;
  left:50%;
  bottom:0;
  transform:translateX(-50%);
  width:80px;
  height:4px;
  border-radius:3px;
  background:linear-gradient(90deg,#2f62ad,#5b8de0);
}

/* ================= GRID ================= */

.inst-list{
  background:#f4f6f9;
  padding:40px 0 100px;
}

.inst-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:32px;
}

.inst-card{
  position:relative;
  border-radius:16px;
  overflow:hidden;
  height:250px;
  cursor:pointer;
  box-shadow:0 18px 40px rgba(0,0,0,.12);
  transition:.4s;
}

.inst-card img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:.5s;
}

.inst-card-overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(rgba(12,40,70,.35),rgba(12,40,70,.95));
  display:flex;
  flex-direction:column;
  justify-content:flex-end;
  padding:22px;
  color:#fff;
}

.inst-card-overlay h3{
  font-size:19px;
  font-weight:700;
  margin-bottom:5px;
}

.inst-card-overlay span{
  font-size:12px;
  color:#f7b733;
  font-weight:600;
  letter-spacing:.4px;
}

.inst-card:hover{
  transform:translateY(-8px);
  box-shadow:0 30px 70px rgba(0,0,0,.18);
}

.inst-card:hover img{
  transform:scale(1.1);
}

/* ================= CTA ================= */

.inst-cta{
  background:#fff;
  text-align:center;
  padding:100px 0;
}

.inst-cta h2{
  font-size:32px;
  font-weight:800;
  color:#0f3d6b;
  margin-bottom:12px;
}

.inst-cta p{
  font-size:16px;
  color:#6b7280;
  max-width:560px;
  margin:0 auto 26px;
  line-height:1.7;
}

.inst-btn{
  display:inline-block;
  background:linear-gradient(135deg,#f39c12,#ffb547);
  color:#fff;
  padding:13px 30px;
  border-radius:8px;
  font-size:13px;
  font-weight:700;
  letter-spacing:.5px;
  text-decoration:none;
  transition:.25s;
  box-shadow:0 14px 30px rgba(0,0,0,.2);
}

.inst-btn:hover{
  transform:translateY(-2px);
  box-shadow:0 18px 40px rgba(0,0,0,.25);
}

/* ================= RESPONSIVE ================= */

@media (max-width:1100px){
  .inst-grid{ grid-template-columns:repeat(2,1fr); }
}

@media (max-width:992px){
  .inst-hero{ height:340px; }
  .inst-intro-card{
    padding:45px 40px;
    margin:-90px 20px 0;
  }
}

@media (max-width:768px){
  .inst-hero{ height:280px; }

  .inst-hero h1{ font-size:2rem; }

  .inst-intro-card{
    padding:32px 24px;
    margin:-70px 16px 0;
    border-radius:12px;
  }

  .section-title{ font-size:30px; }

  .inst-grid{ grid-template-columns:1fr; }
}

@media (max-width:480px){
  .inst-hero{ height:240px; }

  .inst-breadcrumb{ font-size:13px; }

  .inst-intro-card{
    margin:-60px 14px 0;
    padding:26px 18px;
  }

  .inst-intro-card h2{ font-size:1.6rem; }
  .inst-intro-card p{ font-size:15px; }

  .section-title{ font-size:26px; }
}