/* =========================================================
   ODISHA INSTITUTE OF INFORMATION TECHNOLOGY (OIIT)
   Custom Stylesheet
   Bootstrap 5 is used only as a grid/utility foundation.
   All visual identity below is custom to OIIT.
   ========================================================= */

/* ---------------------------------------------------------
   1. DESIGN TOKENS
--------------------------------------------------------- */
:root{
  /* Brand colors (from OIIT logo) */
  --oiit-blue:        #26358F;
  --oiit-blue-dark:   #1B2568;
  --oiit-blue-light:  #EAF0FB;
  --oiit-sky:         #159BD7;
  --oiit-red:         #C7191E;
  --oiit-red-dark:    #A31418;
  --oiit-yellow:      #F5E500;
  --oiit-white:       #FFFFFF;
  --oiit-text:        #1B1F2A;
  --oiit-text-mute:   #5B6273;
  --oiit-bg-light:    #F5F8FC;
  --oiit-border:      #E3E9F3;

  /* Gradients */
  --grad-blue: linear-gradient(135deg, var(--oiit-blue) 0%, var(--oiit-sky) 100%);
  --grad-red:  linear-gradient(135deg, var(--oiit-red) 0%, #E9414A 100%);
  --grad-dark: linear-gradient(160deg, #16204F 0%, var(--oiit-blue) 60%, var(--oiit-sky) 130%);

  /* Radius / shadow */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 14px rgba(27, 37, 104, 0.07);
  --shadow-md: 0 10px 30px rgba(27, 37, 104, 0.12);
  --shadow-lg: 0 20px 50px rgba(27, 37, 104, 0.18);

  /* Type */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;

  --header-height: 84px;
}

/* ---------------------------------------------------------
   2. RESET / BASE
--------------------------------------------------------- */


html,
body {
    margin: 0 !important;
    padding: 0 !important;
    overflow-x: hidden !important;
}

.container,
.container-fluid {
    overflow: visible !important;
}
body.menu-open{ overflow: hidden; }

h1,h2,h3,h4,h5,h6{
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--oiit-blue-dark);
  line-height: 1.25;
}
p{ margin-bottom: 0; }
a{ text-decoration: none; color: inherit; transition: all .25s ease; }
img{ max-width: 100%; height: auto; display: block; }
ul{ margin: 0; padding: 0; list-style: none; }
button{ font-family: var(--font-body); }

::selection{ background: var(--oiit-yellow); color: var(--oiit-text); }

:focus-visible{
  outline: 3px solid var(--oiit-sky);
  outline-offset: 2px;
  border-radius: 4px;
}

.custom-container{
  width: 100%;
  max-width: 1260px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Utility */
.text-accent{ color: var(--oiit-red); }
.text-blue{ color: var(--oiit-blue); }
.text-sky{ color: var(--oiit-sky); }
.bg-light-section{ background: var(--oiit-bg-light); }
.bg-white-section{ background: var(--oiit-white); }

.eyebrow-label{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--oiit-red);
  background: rgba(199,25,30,0.08);
  padding: 7px 16px;
  border-radius: 30px;
  margin-bottom: 16px;
}


.section-padding{ padding: 90px 0; }
.section-title{
  font-size: clamp(1.8rem, 3.4vw, 2.7rem);
  font-weight: 700;
  margin-bottom: 16px;
}
.section-subtitle{
  color: var(--oiit-text-mute);
  font-size: 1.05rem;
  max-width: 640px;
}
.section-head{ margin-bottom: 50px; }
.section-head.text-center .section-subtitle{ margin-left: auto; margin-right: auto; }

/* Buttons (custom, not overriding .btn core behavior) */
.btn-oiit-primary,
.btn-oiit-secondary,
.btn-oiit-outline,
.btn-oiit-white{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 10px 30px;
  border-radius: 50px;
  border: 2px solid transparent;
  transition: all .3s cubic-bezier(.4,0,.2,1);
  white-space: nowrap;
}
.btn-oiit-primary{
  background: var(--grad-blue);
  color: var(--oiit-white);
  box-shadow: 0 10px 24px rgba(38,53,143,0.28);
}
.btn-oiit-primary:hover{
  transform: translateY(-3px);
  box-shadow: 0 16px 30px rgba(38,53,143,0.36);
  color: var(--oiit-white);
}
.btn-oiit-secondary{
  background: var(--grad-red);
  color: var(--oiit-white);
  box-shadow: 0 10px 24px rgba(199,25,30,0.28);
}
.btn-oiit-secondary:hover{
  transform: translateY(-3px);
  box-shadow: 0 16px 30px rgba(199,25,30,0.36);
  color: var(--oiit-white);
}
.btn-oiit-outline{
  background: transparent;
  color: var(--oiit-blue);
  border-color: var(--oiit-blue);
}
.btn-oiit-outline:hover{
  background: var(--oiit-blue);
  color: var(--oiit-white);
  transform: translateY(-3px);
}
.btn-oiit-white{
  background: var(--oiit-white);
  color: var(--oiit-blue);
}
.btn-oiit-white:hover{
  background: var(--oiit-yellow);
  color: var(--oiit-blue-dark);
  transform: translateY(-3px);
}
.btn-sm-oiit{ padding: 10px 22px; font-size: 0.85rem; }

/* ---------------------------------------------------------
   3. PRELOADER-FREE SCROLL TOP SPACER (fixed header offset)
--------------------------------------------------------- */
body{ padding-top: var(--header-height); }

/* ---------------------------------------------------------
   4. HEADER / NAVIGATION
--------------------------------------------------------- */
.site-header{
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  /* height: var(--header-height); */
  background: rgba(255,255,255,0.98);
  box-shadow: 0 2px 18px rgba(27,37,104,0.06);
  transition: all .35s ease;
  padding-top: 7px;
  padding-bottom: 7px;
}
.site-header.header-scrolled{
  /* height: 68px; */
  box-shadow: 0 6px 24px rgba(27,37,104,0.12);
}
.header-inner{
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand-link{
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-logo{
  height: 65px;
  width: auto;
  transition: height .35s ease;
}
/* .site-header.header-scrolled .brand-logo{ height: 44px; } */
.brand-text{
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.brand-text .brand-name{
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--oiit-blue-dark);
}
.brand-text .brand-sub{
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.8px;
  color: var(--oiit-text-mute);
  text-transform: uppercase;
}

.main-nav{ display: flex; align-items: center; gap: 6px; }
.main-nav .nav-item{ position: relative; }
.main-nav .nav-link{
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.94rem;
  color: var(--oiit-text);
  border-radius: 8px;
  position: relative;
}
.main-nav .nav-link:hover,
.main-nav .nav-link.active{
  color: var(--oiit-blue);
}
.main-nav .nav-link::after{
  content:'';
  position: absolute;
  left: 16px; right: 16px; bottom: 6px;
  height: 2px;
  background: var(--oiit-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.main-nav .nav-link:hover::after,
.main-nav .nav-link.active::after{ transform: scaleX(1); }

.has-dropdown .dropdown-caret{ font-size: 0.65rem; transition: transform .3s ease; }
.has-dropdown:hover .dropdown-caret{ transform: rotate(180deg); }
.nav-dropdown{
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 260px;
  background: var(--oiit-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: 10px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all .28s ease;
  border: 1px solid var(--oiit-border);
}
.has-dropdown:hover .nav-dropdown{
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-dropdown a{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--oiit-text);
}
.nav-dropdown a i{ color: var(--oiit-sky); width: 18px; }
.nav-dropdown a:hover{ background: var(--oiit-blue-light); color: var(--oiit-blue); }

.header-actions{ display: flex; align-items: center; gap: 14px; }
.nav-toggle-btn{
  display: none;
  width: 46px; height: 46px;
  border-radius: 10px;
  border: 1px solid var(--oiit-border);
  background: var(--oiit-bg-light);
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--oiit-blue-dark);
  cursor: pointer;
}

/* ---------------------------------------------------------
   5. MOBILE MENU (slide from LEFT)
--------------------------------------------------------- */
.mobile-menu-overlay{
  position: fixed;
  inset: 0;
  background: rgba(15,20,45,0.55);
  z-index: 1040;
  opacity: 0;
  visibility: hidden;
  transition: opacity .35s ease, visibility .35s ease;
  backdrop-filter: blur(2px);
}
.mobile-menu-overlay.active{ opacity: 1; visibility: visible; }

.mobile-menu{
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  width: 84%;
  max-width: 340px;
  background: var(--oiit-white);
  z-index: 1050;
  box-shadow: 12px 0 40px rgba(0,0,0,0.25);
  transform: translateX(-105%);
  transition: transform .4s cubic-bezier(.4,0,.2,1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.active{ transform: translateX(0); }

.mobile-menu-header{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px;
  background: var(--grad-blue);
  flex-shrink: 0;
}
.mobile-menu-header .brand-logo{ height: 55px; }
.mobile-menu-header .mm-brand{ display:flex; align-items:center; gap:10px; }
.mobile-menu-header .mm-brand-text{ color:#fff; line-height:1.1; }
.mobile-menu-header .mm-brand-text small{ display:block; font-size:0.65rem; opacity:0.85; letter-spacing:0.6px;}
.mobile-menu-close{
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: none;
  color: #fff;
  font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background .25s ease, transform .25s ease;
}
.mobile-menu-close:hover{ background: rgba(255,255,255,0.3); transform: rotate(90deg); }

.mobile-menu-body{ padding: 14px 12px 30px; flex: 1; }
.mobile-nav-item{ border-bottom: 1px solid var(--oiit-border); }
.mobile-nav-link{
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 12px;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 1rem;
  color: var(--oiit-text);
  opacity: 0;
  transform: translateX(-16px);
  transition: opacity .35s ease, transform .35s ease, color .2s ease;
}
.mobile-menu.active .mobile-nav-link{ opacity: 1; transform: translateX(0); }
.mobile-nav-link:hover, .mobile-nav-link.active{ color: var(--oiit-blue); }
.mobile-nav-link i.link-icon{ width: 20px; color: var(--oiit-sky); margin-right:10px; }
.mobile-submenu-toggle .caret{ transition: transform .3s ease; }
.mobile-submenu-toggle[aria-expanded="true"] .caret{ transform: rotate(180deg); }
.mobile-submenu{
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  background: var(--oiit-bg-light);
  border-radius: 10px;
}
.mobile-submenu.open{ max-height: 220px; }
.mobile-submenu a{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 14px 13px 40px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--oiit-text-mute);
}
.mobile-submenu a:hover{ color: var(--oiit-blue); }

.mobile-menu-footer{
  padding: 18px 20px 26px;
  border-top: 1px solid var(--oiit-border);
  flex-shrink: 0;
}
.mobile-menu-footer .btn-oiit-primary{ width: 100%; }
.mobile-menu-footer .mm-contact{ margin-top:16px; font-size:0.85rem; color: var(--oiit-text-mute); }
.mobile-menu-footer .mm-contact a{ color: var(--oiit-blue); font-weight:600;}

/* Delay each mobile link's reveal a touch for a staggered feel */
.mobile-menu.active .mobile-nav-item:nth-child(1) .mobile-nav-link{ transition-delay:.05s;}
.mobile-menu.active .mobile-nav-item:nth-child(2) .mobile-nav-link{ transition-delay:.1s;}
.mobile-menu.active .mobile-nav-item:nth-child(3) .mobile-nav-link{ transition-delay:.15s;}
.mobile-menu.active .mobile-nav-item:nth-child(4) .mobile-nav-link{ transition-delay:.2s;}
.mobile-menu.active .mobile-nav-item:nth-child(5) .mobile-nav-link{ transition-delay:.25s;}

/* ---------------------------------------------------------
   6. HERO SECTION
--------------------------------------------------------- */
.hero-section{
  position: relative;
  background: var(--grad-dark);
  overflow: hidden;
  padding: 100px 0 70px;
  min-height: 88vh;
  display: flex;
  align-items: center;
}
.hero-section::before{
  content:'';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 15% 25%, rgba(21,155,215,0.35), transparent 45%),
                     radial-gradient(circle at 85% 75%, rgba(199,25,30,0.25), transparent 50%);
  pointer-events: none;
}
.hero-grid{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-content .eyebrow-label{
  background: rgba(255,255,255,0.12);
  color: var(--oiit-yellow);
}
.hero-content .eyebrow-label::before{ background: var(--oiit-yellow); }
.hero-title{
  font-size: 50px;
  color: var(--oiit-white);
  margin-bottom: 22px;
}
.hero-title span{ color: var(--oiit-yellow); }
.hero-desc{
  color: rgba(255,255,255,0.85);
  font-size: 1.08rem;
  max-width: 560px;
  margin-bottom: 34px;
}
.hero-btn-group{ display: flex; flex-wrap: wrap; gap: 16px; }

.hero-visual{
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual-frame{
  position: relative;
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 6px solid rgba(255,255,255,0.14);
}
.hero-visual-frame img{ width: 100%; aspect-ratio: 4/5; object-fit: cover; }
.hero-float-card{
  position: absolute;
  background: var(--oiit-white);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: floatY 4.5s ease-in-out infinite;
}
.hero-float-card .icon-badge{
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
}
.hero-float-card h6{ margin:0; font-size:0.85rem; color: var(--oiit-blue-dark); }
.hero-float-card small{ color: var(--oiit-text-mute); font-size:0.72rem; }
.float-card-1{ top: 8%; left: -8%; }
.float-card-1 .icon-badge{ background: var(--grad-blue); }
.float-card-2{ bottom: 10%; right: 0%; animation-delay: 1.2s; }
.float-card-2 .icon-badge{ background: var(--grad-red); }

.hero-shape{
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.5;
}
.hero-shape-1{ width: 90px; height:90px; border: 3px solid var(--oiit-yellow); top: 12%; right: 8%; }
.hero-shape-2{ width: 50px; height:50px; background: var(--oiit-sky); top: 70%; left: 4%; opacity:0.35;}

@keyframes floatY{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-14px); }
}

/* ---------------------------------------------------------
   7. NOTICE / ANNOUNCEMENT SECTION
--------------------------------------------------------- */
.notice-section{ padding: 60px 0; background: var(--oiit-white); border-bottom: 1px solid var(--oiit-border); }
.notice-header{
  display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:16px;
  margin-bottom: 30px;
}
.notice-header h2{ font-size: 1.6rem; display:flex; align-items:center; gap:12px; margin:0; }
.notice-header h2 i{
  color: var(--oiit-red);
  background: rgba(199,25,30,0.1);
  width: 46px; height: 46px;
  border-radius: 12px;
  display:flex; align-items:center; justify-content:center;
  font-size:1.15rem;
}
.notice-card{
  background: var(--oiit-bg-light);
  border: 1px solid var(--oiit-border);
  border-left: 4px solid var(--oiit-red);
  border-radius: var(--radius-sm);
  padding: 22px;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.notice-card:hover{ transform: translateY(-6px); box-shadow: var(--shadow-md); background:#fff; }
.notice-date{
  display:inline-flex; align-items:center; gap:6px;
  font-size:0.78rem; font-weight:600; color: var(--oiit-sky);
  margin-bottom:10px;
}
.notice-card h5{ font-size:1.05rem; margin-bottom:10px; }
.notice-card p{ color: var(--oiit-text-mute); font-size:0.92rem; margin-bottom:16px; }
.notice-link{ font-weight:600; font-size:0.88rem; color: var(--oiit-blue); display:inline-flex; align-items:center; gap:6px;}
.notice-link i{ transition: transform .25s ease; }
.notice-link:hover i{ transform: translateX(4px); }

/* ---------------------------------------------------------
   8. ABOUT SECTION
--------------------------------------------------------- */
.about-media{ position: relative; }
.about-media img{ border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.about-media-badge{
  position:absolute; bottom:-24px; right:-24px;
  background: var(--grad-blue);
  color:#fff;
  padding: 20px 26px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  text-align:center;
}
.about-media-badge .num{ font-family: var(--font-heading); font-size:1.9rem; font-weight:700; display:block;}
.about-media-badge .lbl{ font-size:0.75rem; letter-spacing:0.5px; opacity:0.9; }
.about-content ul.check-list li{
  display:flex; align-items:flex-start; gap:12px; margin-bottom:14px; font-size:0.97rem; color: var(--oiit-text);
}
.about-content ul.check-list i{
  color: var(--oiit-blue);
  background: var(--oiit-blue-light);
  width:26px; height:26px; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  font-size:0.72rem; flex-shrink:0; margin-top:2px;
}

/* ---------------------------------------------------------
   9. STATS SECTION
--------------------------------------------------------- */
.stats-section{
  background: var(--grad-blue);
  position: relative;
  overflow:hidden;
}
.stats-section::before{
  content:''; position:absolute; inset:0;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="60" height="60"><circle cx="2" cy="2" r="1.4" fill="white" opacity="0.15"/></svg>');
  opacity:0.4;
}
.stats-card{
  position: relative; z-index:2;
  text-align: center;
  padding: 20px;
  color:#fff;
  border-right: 1px solid rgba(255,255,255,0.16);
}
.stats-card:last-child{ border-right:none; }
.stats-card .stat-number{
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight:700;
  color: var(--oiit-yellow);
  display:flex; align-items:center; justify-content:center; gap:4px;
}
.stats-card .stat-label{ font-size:0.92rem; opacity:0.9; margin-top:6px; }

/* ---------------------------------------------------------
   10. SERVICE CARDS
--------------------------------------------------------- */
.service-card{
  background:#fff;
  border-radius: var(--radius-md);
  padding: 40px 32px;
  height:100%;
  border: 1px solid var(--oiit-border);
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position:relative;
  overflow:hidden;
}
.service-card::after{
  content:'';
  position:absolute; top:0; left:0; right:0; height:4px;
  background: var(--grad-blue);
  transform: scaleX(0); transform-origin:left;
  transition: transform .35s ease;
}
.service-card.card-red::after{ background: var(--grad-red); }
.service-card:hover::after{ transform: scaleX(1); }
.service-card:hover{ transform: translateY(-10px); box-shadow: var(--shadow-lg); border-color: transparent; }
.service-icon{
  width: 68px; height: 68px;
  border-radius: 18px;
  display:flex; align-items:center; justify-content:center;
  font-size: 1.7rem;
  color:#fff;
  margin-bottom: 24px;
  background: var(--grad-blue);
}
.service-card.card-red .service-icon{ background: var(--grad-red); }
.service-card h3{ font-size: 1.3rem; margin-bottom: 14px; }
.service-card p{ color: var(--oiit-text-mute); margin-bottom: 22px; }
.service-card ul.mini-list{ margin-bottom: 24px; }
.service-card ul.mini-list li{
  font-size:0.9rem; color: var(--oiit-text-mute);
  display:flex; align-items:center; gap:8px; margin-bottom:8px;
}
.service-card ul.mini-list i{ color: var(--oiit-sky); font-size:0.75rem; }

/* ---------------------------------------------------------
   11. FEATURE CARDS (Why Choose)
--------------------------------------------------------- */
.feature-card{
  text-align:center;
  padding: 34px 24px;
  border-radius: var(--radius-md);
  background: var(--oiit-bg-light);
  height:100%;
  transition: all .3s ease;
}
.feature-card:hover{ background:#fff; box-shadow: var(--shadow-md); transform: translateY(-6px); }
.feature-icon{
  width: 60px; height:60px;
  margin: 0 auto 18px;
  border-radius: 50%;
  background: #fff;
  color: var(--oiit-blue);
  display:flex; align-items:center; justify-content:center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-sm);
}
.feature-card h5{ font-size: 1.05rem; margin-bottom: 10px; }
.feature-card p{ font-size:0.9rem; color: var(--oiit-text-mute); margin:0; }

/* ---------------------------------------------------------
   12. HIGHLIGHT SECTIONS (Solar / NGO)
--------------------------------------------------------- */
.highlight-section .highlight-media{ position:relative; }
.highlight-section .highlight-media img{
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  width:100%;
  aspect-ratio: 4/3.2;
  object-fit: cover;
}
.chip-list{ display:flex; flex-wrap:wrap; gap:12px; margin: 26px 0 30px; }
.chip-item{
  display:flex; align-items:center; gap:10px;
  background:#fff;
  border:1px solid var(--oiit-border);
  padding: 12px 18px;
  border-radius: 12px;
  font-size:0.9rem;
  font-weight:500;
  box-shadow: var(--shadow-sm);
  flex: 1 1 220px;
}
.chip-item i{ color: var(--oiit-sky); font-size:1rem; }
.highlight-section.ngo-variant .chip-item i{ color: var(--oiit-red); }

/* ---------------------------------------------------------
   13. PROCESS / APPROACH TIMELINE
--------------------------------------------------------- */
.process-track{
  display:grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  position: relative;
}
.process-track::before{
  content:'';
  position:absolute;
  top: 34px; left: 8%; right: 8%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--oiit-border) 0 10px, transparent 10px 18px);
  z-index:0;
}
.process-step{ position:relative; z-index:1; text-align:center; }
.process-num{
  width: 68px; height:68px;
  margin: 0 auto 20px;
  border-radius:50%;
  background: var(--grad-blue);
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-heading); font-weight:700; font-size:1.2rem;
  box-shadow: var(--shadow-md);
}
.process-step:nth-child(odd) .process-num{ background: var(--grad-red); }
.process-step h6{ font-size:1rem; margin-bottom:8px; }
.process-step p{ font-size:0.85rem; color: var(--oiit-text-mute); }

/* ---------------------------------------------------------
   14. GALLERY
--------------------------------------------------------- */
.gallery-item{
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1/1;
}
.gallery-item img{
  width:100%; height:100%; object-fit:cover;
  transition: transform .5s ease;
}
.gallery-item:hover img{ transform: scale(1.12); }
.gallery-overlay{
  position:absolute; inset:0;
  background: linear-gradient(180deg, rgba(38,53,143,0.1), rgba(15,20,45,0.85));
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:10px;
  opacity:0; transition: opacity .35s ease;
  color:#fff; text-align:center; padding: 12px;
}
.gallery-item:hover .gallery-overlay{ opacity:1; }
.gallery-overlay i{
  width:44px; height:44px; border-radius:50%;
  border: 2px solid #fff;
  display:flex; align-items:center; justify-content:center;
  font-size:1rem;
  transform: scale(0.6);
  transition: transform .35s ease;
}
.gallery-item:hover .gallery-overlay i{ transform: scale(1); }
.gallery-overlay span{ font-size:0.85rem; font-weight:600; }
.gallery-filter-bar{ display:flex; flex-wrap:wrap; gap:12px; justify-content:center; margin-bottom: 40px; }
.filter-btn{
  padding: 10px 24px;
  border-radius: 30px;
  border: 1px solid var(--oiit-border);
  background:#fff;
  font-family: var(--font-heading);
  font-weight:500; font-size:0.9rem;
  color: var(--oiit-text-mute);
  cursor:pointer;
  transition: all .3s ease;
}
.filter-btn:hover{ border-color: var(--oiit-blue); color: var(--oiit-blue); }
.filter-btn.active{ background: var(--grad-blue); color:#fff; border-color: transparent; }

/* Lightbox (custom, no external lib) */
.oiit-lightbox{
  position: fixed; inset:0; z-index: 2000;
  background: rgba(10,14,32,0.92);
  display:flex; align-items:center; justify-content:center;
  opacity:0; visibility:hidden;
  transition: opacity .3s ease, visibility .3s ease;
  padding: 30px;
}
.oiit-lightbox.active{ opacity:1; visibility:visible; }
.oiit-lightbox img{ max-width: 90vw; max-height: 85vh; border-radius: 12px; box-shadow: var(--shadow-lg); }
.lightbox-close{
  position:absolute; top: 24px; right: 30px;
  width:46px; height:46px; border-radius:50%;
  background: rgba(255,255,255,0.12);
  border:none; color:#fff; font-size:1.3rem;
  display:flex; align-items:center; justify-content:center;
  cursor:pointer;
}
.lightbox-nav{
  position:absolute; top:50%; transform: translateY(-50%);
  width:50px; height:50px; border-radius:50%;
  background: rgba(255,255,255,0.12);
  border:none; color:#fff; font-size:1.2rem;
  display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.lightbox-prev{ left: 24px; }
.lightbox-next{ right: 24px; }

/* ---------------------------------------------------------
   15. CTA SECTION
--------------------------------------------------------- */
.cta-section{
  background: var(--grad-dark);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
  text-align:center;
}
.cta-section::before{
  content:'';
  position:absolute; width:340px; height:340px; border-radius:50%;
  background: var(--oiit-red); opacity:0.25; filter: blur(80px);
  top:-100px; right:-80px;
}
.cta-section h2{ color:#fff; font-size: clamp(1.6rem,3.4vw,2.5rem); margin-bottom:16px; }
.cta-section p{ color: rgba(255,255,255,0.8); max-width:620px; margin:0 auto 32px; }
.cta-btn-group{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ---------------------------------------------------------
   16. TESTIMONIALS
--------------------------------------------------------- */
.testimonial-card{
  background:#fff;
  border-radius: var(--radius-md);
  padding: 36px;
  box-shadow: var(--shadow-md);
  max-width: 720px;
  margin: 0 auto;
  text-align:center;
}
.testimonial-stars{ color: var(--oiit-yellow); margin-bottom:18px; letter-spacing:2px;}
.testimonial-text{ font-size:1.08rem; color: var(--oiit-text); font-style:italic; margin-bottom:26px; }
.testimonial-profile{ display:flex; align-items:center; justify-content:center; gap:14px; }
.testimonial-avatar{
  width:52px; height:52px; border-radius:50%;
  background: var(--grad-blue); color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-heading); font-weight:700;
}
.testimonial-name{ font-weight:700; font-size:0.95rem; }
.testimonial-role{ font-size:0.8rem; color: var(--oiit-text-mute); }
#testimonialCarousel .carousel-indicators{ position: static; margin-top: 30px; }
#testimonialCarousel .carousel-indicators button{
  width:10px; height:10px; border-radius:50%; background: var(--oiit-border); opacity:1; border:none;
}
#testimonialCarousel .carousel-indicators button.active{ background: var(--oiit-blue); }

/* ---------------------------------------------------------
   17. FAQ ACCORDION
--------------------------------------------------------- */
.faq-accordion .accordion-item{
  border: 1px solid var(--oiit-border);
  border-radius: var(--radius-sm) !important;
  margin-bottom: 14px;
  overflow:hidden;
}
.faq-accordion .accordion-button{
  font-family: var(--font-heading);
  font-weight:600;
  font-size:0.98rem;
  color: var(--oiit-blue-dark);
  padding: 20px 22px;
}
.faq-accordion .accordion-button:not(.collapsed){
  background: var(--oiit-blue-light);
  color: var(--oiit-blue);
  box-shadow:none;
}
.faq-accordion .accordion-button:focus{ box-shadow: none; }
.faq-accordion .accordion-button::after{ flex-shrink:0; }
.faq-accordion .accordion-body{ color: var(--oiit-text-mute); font-size:0.92rem; padding: 6px 22px 22px; }

/* ---------------------------------------------------------
   18. CONTACT / ENQUIRY
--------------------------------------------------------- */
.contact-info-item{
  display:flex; align-items:flex-start; gap:16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--oiit-border);
}
.contact-info-item:last-child{ border-bottom:none; }
.contact-info-icon{
  width:50px; height:50px; border-radius:12px;
  background: var(--oiit-blue-light); color: var(--oiit-blue);
  display:flex; align-items:center; justify-content:center; font-size:1.1rem;
  flex-shrink:0;
}
.contact-info-item h6{ margin-bottom:4px; font-size:0.98rem; }
.contact-info-item p{ font-size:0.9rem; color: var(--oiit-text-mute); }

.enquiry-form-card{
  background:#fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 36px;
  border: 1px solid var(--oiit-border);
}
.form-control-oiit, .form-select-oiit{
  width:100%;
  padding: 13px 16px;
  border-radius: 10px;
  border: 1px solid var(--oiit-border);
  background: var(--oiit-bg-light);
  font-family: var(--font-body);
  font-size: 0.95rem;
  margin-bottom: 18px;
  transition: border-color .25s ease, background .25s ease;
}
.form-control-oiit:focus, .form-select-oiit:focus{
  outline:none;
  border-color: var(--oiit-sky);
  background:#fff;
}
.form-label-oiit{ font-size:0.85rem; font-weight:600; margin-bottom:8px; display:block; color: var(--oiit-text); }
.form-msg{ font-size:0.88rem; margin-top:6px; padding:12px 16px; border-radius:10px; display:none; }
.form-msg.show{ display:block; }
.form-msg.success{ background: rgba(21,155,215,0.1); color: var(--oiit-sky); }
.form-msg.error{ background: rgba(199,25,30,0.08); color: var(--oiit-red); }

.map-wrap{ border-radius: var(--radius-lg); overflow:hidden; box-shadow: var(--shadow-md); }
.map-wrap iframe{ width:100%; height:400px; border:0; display:block; }

/* ---------------------------------------------------------
   19. PAGE BANNER (inner pages)
--------------------------------------------------------- */
.page-banner{
  background: var(--grad-dark);
  padding: 140px 0 60px;
  position: relative;
  overflow: hidden;
  text-align:center;
}
.page-banner::before{
  content:'';
  position:absolute; inset:0;
  background-image: radial-gradient(circle at 20% 30%, rgba(21,155,215,0.3), transparent 45%),
                     radial-gradient(circle at 80% 70%, rgba(199,25,30,0.22), transparent 50%);
}
.page-banner h1{ position:relative; color:#fff; font-size: clamp(1.8rem,3.6vw,2.8rem); margin-bottom:14px; }
.breadcrumb-oiit{
  position:relative;
  display:flex; align-items:center; justify-content:center; gap:8px;
  font-size:0.9rem; color: rgba(255,255,255,0.75);
}
.breadcrumb-oiit a{ color: var(--oiit-yellow); font-weight:600; }

/* ---------------------------------------------------------
   20. FOOTER
--------------------------------------------------------- */
.footer-section{
  background: #0F1533;
  color: rgba(255,255,255,0.75);
  padding-top: 80px;
}
.footer-brand{ display:flex; align-items:center; gap:12px; margin-bottom:20px; }
.footer-brand .brand-logo{ height:55px; background:#fff; border-radius:8px; padding:4px; }
.footer-brand-text .fname{ color:#fff; font-family: var(--font-heading); font-weight:700; font-size:1rem; }
.footer-brand-text .fsub{ font-size:0.72rem; letter-spacing:0.6px; color: rgba(255,255,255,0.55); }
.footer-section p{ font-size:0.9rem; line-height:1.8; }
.footer-heading{ color:#fff; font-size:1.05rem; margin-bottom:24px; position:relative; padding-bottom:12px; }
.footer-heading::after{ content:''; position:absolute; bottom:0; left:0; width:36px; height:3px; background: var(--oiit-red); border-radius:3px; }
.footer-links li{ margin-bottom:12px; }
.footer-links a{ font-size:0.9rem; color: rgba(255,255,255,0.7); display:inline-flex; align-items:center; gap:8px; }
.footer-links a i{ font-size:0.7rem; color: var(--oiit-sky); }
.footer-links a:hover{ color: var(--oiit-yellow); padding-left:4px; }
.footer-contact li{ display:flex; align-items:flex-start; gap:12px; margin-bottom:16px; font-size:0.9rem; }
.footer-contact i{ color: var(--oiit-sky); margin-top:3px; }
.footer-social{ display:flex; gap:12px; margin-top:22px; }
.footer-social a{
  width:40px; height:40px; border-radius:50%;
  background: rgba(255,255,255,0.08);
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:0.95rem;
  transition: all .3s ease;
}
.footer-social a:hover{ background: var(--grad-red); transform: translateY(-4px); }
.footer-bottom{
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 60px;
  padding: 22px 0;
  text-align:center;
  font-size:0.85rem;
  color: rgba(255,255,255,0.55);
}
.footer-bottom a{ color: var(--oiit-yellow); }

/* ---------------------------------------------------------
   21. FLOATING BUTTONS (WhatsApp / Scroll Top)
--------------------------------------------------------- */
.whatsapp-float{
  position: fixed;
  left: 22px;
  bottom: 26px;
  z-index: 900;
  width: 58px; height:58px;
  border-radius:50%;
  background:#25D366;
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:1.7rem;
  box-shadow: 0 8px 22px rgba(37,211,102,0.45);
  animation: pulseWA 2.4s infinite;
}
.whatsapp-float:hover{ color:#fff; transform: scale(1.08); }
@keyframes pulseWA{
  0%{ box-shadow: 0 0 0 0 rgba(37,211,102,0.55); }
  70%{ box-shadow: 0 0 0 16px rgba(37,211,102,0); }
  100%{ box-shadow: 0 0 0 0 rgba(37,211,102,0); }
}

.scroll-top-btn{
  position: fixed;
  right: 22px;
  bottom: 26px;
  z-index: 900;
  width: 50px; height:50px;
  border-radius:50%;
  background: var(--grad-blue);
  color:#fff;
  display:flex; align-items:center; justify-content:center;
  font-size:1.1rem;
  border:none;
  box-shadow: var(--shadow-md);
  opacity:0; visibility:hidden; transform: translateY(14px);
  transition: all .35s ease;
  cursor:pointer;
}
.scroll-top-btn.show{ opacity:1; visibility:visible; transform: translateY(0); }
.scroll-top-btn:hover{ background: var(--grad-red); }

/* ---------------------------------------------------------
   22. ANIMATION UTILITIES
--------------------------------------------------------- */
.reveal{ opacity:0; transition: opacity .7s ease, transform .7s cubic-bezier(.4,0,.2,1); }
.reveal-up{ transform: translateY(36px); }
.reveal-left{ transform: translateX(-36px); }
.reveal-right{ transform: translateX(36px); }
.reveal.in-view{ opacity:1; transform: translate(0,0); }

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal{ opacity:1; transform:none; }
}

/* ---------------------------------------------------------
   23. RESPONSIVE MEDIA QUERIES
--------------------------------------------------------- */
@media (max-width: 1199.98px){
  .hero-grid{ gap: 32px; }
  .process-track{ gap: 16px; }
}

@media (max-width: 991.98px){
  :root{ --header-height: 74px; }
  .main-nav, .header-actions .btn-oiit-primary{ display:none; }
  .nav-toggle-btn{ display:flex; }

  .hero-section{ padding: 100px 0 60px; min-height: auto; text-align:center; }
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-desc{ margin-left:auto; margin-right:auto; }
  .hero-btn-group{ justify-content:center; }
  .hero-visual{ margin-top: 40px; }
  .hero-float-card{ display: none; }

  .section-padding{ padding: 64px 0; }
  .about-media-badge{ right: 10px; bottom:-20px; padding:14px 18px; }
  .about-media{ margin-bottom: 36px; }

  .stats-card{ border-right:none; border-bottom: 1px solid rgba(255,255,255,0.16); padding-bottom:26px; margin-bottom:10px; }
  .stats-card:last-child{ border-bottom:none; }

  .process-track{ grid-template-columns: 1fr; gap: 30px; text-align:left; }
  .process-track::before{ display:none; }
  .process-step{ display:flex; align-items:flex-start; gap:18px; text-align:left; }
  .process-num{ margin:0; flex-shrink:0; width:56px; height:56px; font-size:1rem; }

  .highlight-section .row{ flex-direction: column-reverse; }
  .highlight-section.ngo-variant .row{ flex-direction: column; }
  .highlight-section .highlight-media{ margin-top:30px; }

  .footer-section{ padding-top:56px; text-align:center; }
  .footer-heading::after{ left:50%; transform:translateX(-50%); }
  .footer-brand{ justify-content:center; }
  .footer-links a, .footer-contact li{ justify-content:center; }
  .footer-social{ justify-content:center; }
}

@media (max-width: 767.98px){
  body{ font-size:15px; }
  .section-padding{ padding: 50px 0; }
  .section-head{ margin-bottom: 34px; }
  .btn-oiit-primary, .btn-oiit-secondary, .btn-oiit-outline, .btn-oiit-white{
    padding: 12px 22px; font-size:0.88rem; width:100%;
  }
  .hero-btn-group{ flex-direction: column; }
  .hero-btn-group a{ width:100%; }
  .cta-btn-group{ flex-direction: column; align-items:stretch; }
  .cta-btn-group a{ width:100%; }
  .notice-header{ flex-direction:column; align-items:flex-start; }
  .enquiry-form-card{ padding:26px 20px; }
  .brand-text .brand-name{ font-size:0.9rem; }
  .brand-logo{ height:55px !important; }
}

@media (max-width: 575.98px){
  .custom-container{ padding: 0 16px; }
  :root{ --header-height: 68px; }
  .hero-section{ padding: 100px 0 46px; }
  .service-card, .enquiry-form-card{ padding: 28px 20px; }
  .testimonial-card{ padding: 26px 20px; }
  .mobile-menu{ width: 88%; }
  .whatsapp-float{ width:50px; height:50px; font-size:1.4rem; left:14px; bottom:18px; }
  .scroll-top-btn{ width:44px; height:44px; font-size:1rem; right:14px; bottom:18px; }
}

@media (max-width: 380px){
  .hero-title{ font-size: 1.8rem; }
  .section-title{ font-size: 1.5rem; }
}