/* =====================================================================
   AIIT - Training & Placement Company, Roorkee
   Custom stylesheet (extends Bootstrap 5)
   ===================================================================== */

:root {
  --aiit-navy:      #0b1f3a;   /* deep tech blue / slate */
  --aiit-navy-2:    #12294d;
  --aiit-slate:     #1c3a63;
  --aiit-cyan:      #00c2d1;   /* vibrant cyan accent */
  --aiit-cyan-dark: #009fae;
  --aiit-emerald:   #10b981;   /* emerald accent */
  --aiit-emerald-d: #059669;
  --aiit-ink:       #0f172a;
  --aiit-body:      #475569;
  --aiit-muted:     #64748b;
  --aiit-line:      #e2e8f0;
  --aiit-light:     #f8fafc;
  --aiit-light-2:   #f1f5f9;
  --aiit-white:     #ffffff;
  --aiit-shadow:    0 18px 40px -18px rgba(11, 31, 58, .35);
  --aiit-shadow-sm: 0 8px 24px -12px rgba(11, 31, 58, .28);
  --aiit-radius:    16px;
}

/* ---------- Base ---------- */
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--aiit-body);
  background: var(--aiit-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', 'Inter', sans-serif;
  color: var(--aiit-ink);
  font-weight: 700;
  letter-spacing: -0.01em;
}

a { text-decoration: none; }

.section { padding: 88px 0; }
.section-sm { padding: 56px 0; }
.bg-light-soft { background: var(--aiit-light); }
.bg-light-2 { background: var(--aiit-light-2); }
.text-cyan { color: var(--aiit-cyan-dark) !important; }
.text-emerald { color: var(--aiit-emerald-d) !important; }
.text-navy { color: var(--aiit-navy) !important; }

.eyebrow {
  display: inline-block;
  font-family: 'Poppins', sans-serif;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--aiit-cyan-dark);
  background: rgba(0, 194, 209, .1);
  padding: .35rem .85rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15;
  margin-bottom: 1rem;
}
.section-subtitle {
  font-size: 1.08rem;
  color: var(--aiit-muted);
  max-width: 680px;
}

/* ---------- Buttons ---------- */
.btn { font-family: 'Poppins', sans-serif; font-weight: 600; border-radius: 10px; padding: .7rem 1.6rem; transition: all .25s ease; }
.btn-lg { padding: .9rem 2rem; font-size: 1.02rem; }

.btn-aiit {
  background: linear-gradient(135deg, var(--aiit-cyan), var(--aiit-emerald));
  color: #fff;
  border: none;
  box-shadow: 0 12px 26px -12px rgba(0, 194, 209, .8);
}
.btn-aiit:hover { color: #fff; transform: translateY(-3px); box-shadow: 0 18px 34px -12px rgba(0, 194, 209, .95); }

.btn-navy { background: var(--aiit-navy); color: #fff; border: none; }
.btn-navy:hover { background: var(--aiit-slate); color: #fff; transform: translateY(-3px); }

.btn-outline-light-2 { border: 2px solid rgba(255,255,255,.4); color: #fff; }
.btn-outline-light-2:hover { background: #fff; color: var(--aiit-navy); }

.btn-outline-navy { border: 2px solid var(--aiit-navy); color: var(--aiit-navy); }
.btn-outline-navy:hover { background: var(--aiit-navy); color: #fff; }

/* ---------- Navbar ---------- */
.navbar-aiit {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--aiit-line);
  padding: .7rem 0;
  transition: box-shadow .3s ease;
}
.navbar-aiit.scrolled { box-shadow: 0 6px 24px -14px rgba(11,31,58,.4); }

.navbar-brand { font-family: 'Poppins', sans-serif; font-weight: 800; font-size: 1.5rem; color: var(--aiit-navy) !important; letter-spacing: .02em; }
.brand-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, var(--aiit-navy), var(--aiit-slate));
  color: #fff; font-family: 'Poppins', sans-serif; font-weight: 800; font-size: 1rem; margin-right: .6rem;
  box-shadow: var(--aiit-shadow-sm);
}

.navbar-aiit .nav-link {
  font-family: 'Poppins', sans-serif; font-weight: 500; font-size: .96rem;
  color: var(--aiit-ink) !important; margin: 0 .1rem; padding: .5rem .85rem !important;
  border-radius: 8px; position: relative;
}
.navbar-aiit .nav-link:hover { color: var(--aiit-cyan-dark) !important; background: var(--aiit-light-2); }
.navbar-aiit .nav-link.active { color: var(--aiit-cyan-dark) !important; }
.navbar-aiit .nav-link.active::after {
  content: ""; position: absolute; left: .85rem; right: .85rem; bottom: .15rem; height: 3px;
  border-radius: 3px; background: linear-gradient(90deg, var(--aiit-cyan), var(--aiit-emerald));
}
.navbar-toggler { border: none; padding: .35rem .5rem; }
.navbar-toggler:focus { box-shadow: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: radial-gradient(1200px 600px at 80% -10%, rgba(0,194,209,.22), transparent 60%),
              radial-gradient(1000px 500px at 0% 110%, rgba(16,185,129,.18), transparent 55%),
              linear-gradient(160deg, var(--aiit-navy) 0%, var(--aiit-navy-2) 55%, var(--aiit-slate) 100%);
  color: #e6eefc;
  overflow: hidden;
  padding: 132px 0 96px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 46px 46px; opacity: .5;
}
.hero > .container { position: relative; z-index: 2; }
.hero h1 { color: #fff; font-size: clamp(2.2rem, 5.2vw, 3.6rem); line-height: 1.1; }
.hero .lead { color: #b9c8e6; font-size: 1.18rem; max-width: 620px; }
.hero-highlight { background: linear-gradient(120deg, var(--aiit-cyan), var(--aiit-emerald)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero-pill { display:inline-flex; align-items:center; gap:.5rem; background: rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.16); color:#d5e2fb; padding:.45rem 1rem; border-radius:999px; font-size:.85rem; font-weight:500; }

.hero-panel {
  background: rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.14);
  border-radius: 20px; padding: 1.75rem; backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.hero-stat { text-align:center; padding:.5rem; }
.hero-stat .num { font-family:'Poppins',sans-serif; font-weight:800; font-size:1.9rem; color:#fff; }
.hero-stat .lbl { color:#9fb4d8; font-size:.82rem; }

.page-hero {
  background: radial-gradient(900px 400px at 85% -20%, rgba(0,194,209,.22), transparent 60%),
              linear-gradient(160deg, var(--aiit-navy), var(--aiit-slate));
  color:#e6eefc; padding: 128px 0 64px; position: relative; overflow:hidden;
}
.page-hero::before {
  content:""; position:absolute; inset:0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 46px 46px; opacity:.5;
}
.page-hero > .container { position: relative; z-index: 2; }
.page-hero h1 { color:#fff; font-size: clamp(2rem, 4.6vw, 3rem); }
.page-hero p { color:#b9c8e6; max-width: 720px; }
.breadcrumb-aiit { color:#8ea6cf; font-size:.9rem; }
.breadcrumb-aiit a { color:#8ea6cf; }
.breadcrumb-aiit a:hover { color: var(--aiit-cyan); }

/* ---------- Cards ---------- */
.card-aiit {
  background:#fff; border:1px solid var(--aiit-line); border-radius: var(--aiit-radius);
  padding: 2rem 1.75rem; height:100%; transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.card-aiit:hover { transform: translateY(-8px); box-shadow: var(--aiit-shadow); border-color: transparent; }

.feature-icon {
  width: 58px; height: 58px; border-radius: 14px; display:inline-flex; align-items:center; justify-content:center;
  font-size: 1.55rem; margin-bottom: 1.1rem;
  background: linear-gradient(135deg, rgba(0,194,209,.14), rgba(16,185,129,.14));
  color: var(--aiit-cyan-dark);
}
.card-aiit h3, .card-aiit h4 { font-size: 1.2rem; margin-bottom:.6rem; }

/* Course cards */
.course-card { position: relative; overflow: hidden; }
.course-card .feature-icon { font-size: 1.7rem; }
.course-tag {
  display:inline-block; font-size:.72rem; font-weight:600; letter-spacing:.05em; text-transform:uppercase;
  padding:.28rem .7rem; border-radius:999px; margin-bottom: 1rem;
}
.tag-cyan { background: rgba(0,194,209,.12); color: var(--aiit-cyan-dark); }
.tag-emerald { background: rgba(16,185,129,.12); color: var(--aiit-emerald-d); }
.tag-navy { background: rgba(28,58,99,.1); color: var(--aiit-slate); }
.course-meta { display:flex; flex-wrap:wrap; gap:.5rem 1.25rem; font-size:.86rem; color:var(--aiit-muted); margin-top:1rem; padding-top:1rem; border-top:1px dashed var(--aiit-line); }
.course-meta i { color: var(--aiit-cyan-dark); margin-right:.35rem; }
.syllabus-list { list-style:none; padding:0; margin:.75rem 0 0; }
.syllabus-list li { position:relative; padding-left:1.6rem; margin-bottom:.4rem; font-size:.94rem; }
.syllabus-list li::before { content:"\F26E"; font-family:"bootstrap-icons"; position:absolute; left:0; top:1px; color: var(--aiit-emerald-d); }

/* ---------- Stats / counters ---------- */
.stat-card {
  background: linear-gradient(160deg, var(--aiit-navy), var(--aiit-slate));
  color:#fff; border-radius: var(--aiit-radius); padding: 2rem 1.5rem; text-align:center; height:100%;
  border:1px solid rgba(255,255,255,.08);
}
.stat-card .stat-num { font-family:'Poppins',sans-serif; font-weight:800; font-size: 2.6rem; line-height:1; background: linear-gradient(120deg, var(--aiit-cyan), var(--aiit-emerald)); -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent; }
.stat-card .stat-label { color:#b9c8e6; font-size:.95rem; margin-top:.5rem; }
.stat-card i { font-size:1.7rem; color: var(--aiit-cyan); margin-bottom:.5rem; display:block; }

.stat-light { background:#fff; border:1px solid var(--aiit-line); border-radius:var(--aiit-radius); padding:1.75rem 1.25rem; text-align:center; height:100%; transition: box-shadow .3s ease, transform .3s ease; }
.stat-light:hover { box-shadow: var(--aiit-shadow-sm); transform: translateY(-4px); }
.stat-light .stat-num { font-family:'Poppins',sans-serif; font-weight:800; font-size:2.3rem; color:var(--aiit-navy); }
.stat-light .stat-label { color:var(--aiit-muted); font-size:.92rem; }

/* ---------- Timeline (hiring process) ---------- */
.timeline-step { position: relative; padding: 1.5rem 1.75rem; background:#fff; border:1px solid var(--aiit-line); border-radius: var(--aiit-radius); height:100%; }
.timeline-step .step-num {
  width:44px; height:44px; border-radius:12px; display:inline-flex; align-items:center; justify-content:center;
  font-family:'Poppins',sans-serif; font-weight:700; color:#fff; margin-bottom:.9rem;
  background: linear-gradient(135deg, var(--aiit-cyan), var(--aiit-emerald));
}
.timeline-step h4 { font-size:1.1rem; margin-bottom:.4rem; }

/* ---------- Testimonials ---------- */
.testimonial-card { background:#fff; border:1px solid var(--aiit-line); border-radius: var(--aiit-radius); padding: 1.9rem; height:100%; transition: box-shadow .3s ease, transform .3s ease; }
.testimonial-card:hover { box-shadow: var(--aiit-shadow); transform: translateY(-5px); }
.testimonial-quote { color: var(--aiit-ink); font-size: 1.02rem; }
.testimonial-stars { color: #f59e0b; margin-bottom: .8rem; }
.student-meta { display:flex; align-items:center; gap:.85rem; margin-top:1.2rem; padding-top:1.1rem; border-top:1px solid var(--aiit-line); }
.avatar {
  width:52px; height:52px; border-radius:50%; display:inline-flex; align-items:center; justify-content:center;
  font-family:'Poppins',sans-serif; font-weight:700; color:#fff; font-size:1.05rem; flex:0 0 auto;
  background: linear-gradient(135deg, var(--aiit-navy), var(--aiit-slate));
}
.student-meta .name { font-family:'Poppins',sans-serif; font-weight:600; color:var(--aiit-ink); font-size:.98rem; line-height:1.2; }
.student-meta .role { color: var(--aiit-cyan-dark); font-size:.85rem; font-weight:500; }
.masonry { column-gap: 1.5rem; }
@media (min-width: 768px)  { .masonry { column-count: 2; } }
@media (min-width: 1200px) { .masonry { column-count: 3; } }
.masonry .testimonial-card { margin-bottom: 1.5rem; display: inline-block; width: 100%; }

/* ---------- Contact ---------- */
.contact-card { background:#fff; border:1px solid var(--aiit-line); border-radius:var(--aiit-radius); padding:2rem; height:100%; transition: box-shadow .3s ease, transform .3s ease; }
.contact-card:hover { box-shadow: var(--aiit-shadow-sm); transform: translateY(-4px); }
.contact-card .feature-icon { margin-bottom:.9rem; }
.contact-card a { color: var(--aiit-slate); font-weight:600; word-break: break-word; }
.contact-card a:hover { color: var(--aiit-cyan-dark); }

.info-strip { background: linear-gradient(135deg, var(--aiit-navy), var(--aiit-slate)); color:#fff; border-radius: var(--aiit-radius); padding: 2.5rem; }
.info-strip a { color: var(--aiit-cyan); font-weight:600; }

/* ---------- CTA band ---------- */
.cta-band {
  background: radial-gradient(700px 300px at 90% 0%, rgba(0,194,209,.28), transparent 60%),
              linear-gradient(135deg, var(--aiit-navy), var(--aiit-slate));
  color:#fff; border-radius: 22px; padding: 3rem 2.5rem; overflow:hidden; position:relative;
}
.cta-band h2 { color:#fff; }
.cta-band p { color:#b9c8e6; }

/* ---------- Value / list rows ---------- */
.value-row { display:flex; gap:1.1rem; align-items:flex-start; }
.value-row .feature-icon { flex:0 0 auto; margin-bottom:0; }
.check-list { list-style:none; padding:0; margin:0; }
.check-list li { position:relative; padding-left:2rem; margin-bottom:.85rem; }
.check-list li::before { content:"\F26A"; font-family:"bootstrap-icons"; position:absolute; left:0; top:0; color:var(--aiit-emerald-d); font-size:1.15rem; }

/* ---------- Footer ---------- */
.footer { background: var(--aiit-navy); color:#a9bad8; padding: 66px 0 26px; }
.footer h5 { color:#fff; font-size:1.05rem; margin-bottom:1.1rem; }
.footer a { color:#a9bad8; transition: color .2s ease; }
.footer a:hover { color: var(--aiit-cyan); }
.footer .footer-brand { font-family:'Poppins',sans-serif; font-weight:800; font-size:1.5rem; color:#fff; }
.footer ul { list-style:none; padding:0; margin:0; }
.footer ul li { margin-bottom:.6rem; }
.footer-contact li { display:flex; gap:.6rem; align-items:flex-start; margin-bottom:.75rem; }
.footer-contact i { color: var(--aiit-cyan); margin-top:.25rem; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.1); margin-top:2.5rem; padding-top:1.5rem; font-size:.88rem; color:#7f93b6; }

/* ---------- Utility ---------- */
.rounded-aiit { border-radius: var(--aiit-radius); }
.shadow-aiit { box-shadow: var(--aiit-shadow); }
.lift { transition: transform .3s ease; }
.lift:hover { transform: translateY(-5px); }

@media (max-width: 991px) {
  .navbar-aiit .nav-link.active::after { display:none; }
  .hero { padding: 112px 0 72px; }
  .section { padding: 64px 0; }
  .cta-band, .info-strip { padding: 2rem 1.5rem; }
}

/* ---------- FAQ accordion ---------- */
.faq-accordion .accordion-item { border:1px solid var(--aiit-line); border-radius:14px !important; margin-bottom:1rem; overflow:hidden; background:#fff; }
.faq-accordion .accordion-button { font-family:'Poppins',sans-serif; font-weight:600; color:var(--aiit-ink); background:#fff; padding:1.15rem 1.35rem; border-radius:14px !important; }
.faq-accordion .accordion-button:not(.collapsed) { color:var(--aiit-cyan-dark); background:var(--aiit-light-2); box-shadow:none; }
.faq-accordion .accordion-button:focus { box-shadow:none; border-color:var(--aiit-line); }
.faq-accordion .accordion-button::after { background-size:1.1rem; }
.faq-accordion .accordion-body { color:var(--aiit-body); padding:0 1.35rem 1.25rem; }