:root {
  --imc-navy: #010156;
  --imc-navy-deep: #00003a;
  --imc-red: #a51f18;
  --imc-cream: #f4f6fa;
  --imc-text: #22262a;
  --imc-muted: #5b6470;
  --imc-white: #fff;
  --imc-border: #dfe3e7;
  --font-sans: "Source Sans 3", "Segoe UI", sans-serif;
  --font-display: "Source Serif 4", Georgia, serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--imc-text);
  background:
    radial-gradient(circle at 10% 0%, #e8ecf8 0%, transparent 42%),
    linear-gradient(180deg, #ffffff 0%, var(--imc-cream) 100%);
  line-height: 1.55;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--imc-navy); }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.96);
  border-bottom: 3px solid var(--imc-navy);
  backdrop-filter: blur(8px);
}
.header-inner {
  max-width: 1240px; margin: 0 auto; padding: .55rem 1rem;
  display: flex; align-items: center; gap: 1rem; justify-content: space-between;
}
.brand img { width: min(360px, 62vw); height: auto; }
.nav-toggle {
  display: none; background: var(--imc-navy); border: 0; width: 42px; height: 42px;
  border-radius: 6px; padding: 10px 9px; cursor: pointer;
}
.nav-toggle span {
  display: block; height: 2px; background: #fff; margin: 5px 0;
}
.main-nav > ul {
  list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .15rem .35rem; align-items: center;
}
.main-nav a, .main-nav button {
  font: inherit; background: none; border: 0; cursor: pointer;
  color: var(--imc-navy); text-decoration: none; font-weight: 600; font-size: .92rem;
  padding: .45rem .55rem; border-radius: 4px;
}
.main-nav a:hover, .main-nav button:hover, .main-nav a.active {
  background: #eef0fb; color: var(--imc-navy-deep);
}
.main-nav .has-sub { position: relative; }
.main-nav .has-sub > ul {
  display: none; position: absolute; top: 100%; left: 0; min-width: 240px;
  background: #fff; border: 1px solid var(--imc-border); box-shadow: 0 10px 28px rgba(1,1,86,.12);
  list-style: none; margin: 0; padding: .35rem; z-index: 20;
}
.main-nav .has-sub:hover > ul, .main-nav .has-sub:focus-within > ul { display: block; }
.main-nav .has-sub ul a { display: block; font-weight: 500; font-size: .88rem; }

.notice-marquee {
  background: var(--imc-navy); color: #fff; overflow: hidden; padding: .55rem 0;
}
.notice-marquee a {
  color: #fff; text-decoration: none; margin: 0 1.5rem; white-space: nowrap; font-weight: 600;
}
.notice-marquee a:hover { text-decoration: underline; }

.hero-slider { background: #000; }
.main-slider { width: 100%; position: relative; }
.main-slider .swiper-slide { position: relative; min-height: clamp(220px, 42vw, 460px); }
.main-slider .slide-bgimg { margin: 0; height: 100%; }
.main-slider .slide-bgimg img {
  width: 100%; height: clamp(220px, 42vw, 460px); object-fit: cover;
}
.slide-content {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center;
  padding: 1.5rem; color: #fff;
  background: linear-gradient(180deg, rgba(0,0,40,.25), rgba(0,0,40,.55));
}
.slide-content .title {
  font-family: var(--font-display); font-size: clamp(1.4rem, 3.4vw, 2.6rem);
  margin: 0 0 .4rem; text-shadow: 0 2px 12px rgba(0,0,0,.45);
}
.slide-content .caption { margin: 0 0 1rem; font-size: 1.05rem; opacity: .95; }
.btn.main-btn, .btn {
  display: inline-block; background: var(--imc-navy); color: #fff; text-decoration: none;
  padding: .65rem 1.15rem; border-radius: 4px; font-weight: 700; border: 0; cursor: pointer;
}
.btn.main-btn:hover { background: var(--imc-navy-deep); }
.swiper-button-prev, .swiper-button-next { color: #fff; }

.home-sections { max-width: 1240px; margin: 0 auto; padding: 1.75rem 1rem 2.5rem; }
.sections-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem;
}
.home-card {
  background: #fff; border: 1px solid var(--imc-border); overflow: hidden;
}
.home-card figure { margin: 0; }
.home-card figure img { width: 100%; height: 210px; object-fit: cover; }
.home-card .card-body { padding: 1rem 1.1rem 1.25rem; }
.home-card h2 {
  font-family: var(--font-display); font-size: 1.25rem; color: var(--imc-navy); margin: 0 0 .35rem;
}
.home-card hr { border: 0; border-top: 1px solid var(--imc-border); margin: .4rem 0 .75rem; }
.rich-text { font-size: .95rem; color: var(--imc-text); }
.rich-text p { margin: 0 0 .75rem; text-align: justify; }
.readmore a { font-weight: 700; }

.page-wrap { max-width: 980px; margin: 0 auto; padding: 1.75rem 1rem 3rem; }
.page-inner {
  background: #fff; border: 1px solid var(--imc-border); padding: 1.25rem 1.35rem 1.75rem;
}
.page-inner h1 {
  font-family: var(--font-display); color: var(--imc-navy); margin: 0 0 1rem; font-size: clamp(1.5rem, 3vw, 2rem);
}
.page-hero { width: 100%; margin-bottom: 1rem; }
.crumb, .meta { color: var(--imc-muted); font-size: .9rem; }
.notice-tabs { display: flex; gap: .5rem; margin-bottom: 1rem; }
.notice-tabs a {
  text-decoration: none; padding: .4rem .8rem; border: 1px solid var(--imc-border); color: var(--imc-navy);
}
.notice-tabs a.active { background: var(--imc-navy); color: #fff; }
.notice-list, .dept-list { list-style: none; margin: 0; padding: 0; }
.notice-list li, .dept-list li { border-bottom: 1px solid var(--imc-border); }
.notice-list a, .dept-list a {
  display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 0;
  text-decoration: none; color: inherit;
}
.notice-list span { color: var(--imc-muted); white-space: nowrap; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.contact-form label { display: block; margin-bottom: .85rem; font-weight: 600; font-size: .9rem; }
.contact-form input, .contact-form textarea {
  display: block; width: 100%; margin-top: .3rem; padding: .55rem .7rem;
  border: 1px solid var(--imc-border); font: inherit;
}
.flash { background: #e8f5e9; color: #1b5e20; padding: .7rem 1rem; margin-bottom: 1rem; }
.error { color: var(--imc-red); }

.site-footer {
  background: linear-gradient(180deg, var(--imc-navy-deep), var(--imc-navy));
  color: #e8ebff; margin-top: 1rem;
}
.footer-grid {
  max-width: 1240px; margin: 0 auto; padding: 2rem 1rem;
  display: grid; grid-template-columns: 1.2fr 1fr .8fr; gap: 1.5rem;
}
.site-footer h3 { margin: .6rem 0 .5rem; font-size: 1.05rem; color: #fff; }
.site-footer a { color: #fff; }
.site-footer .label { color: #ffb4ae; }
.map-img { border: 1px solid rgba(255,255,255,.25); max-width: 260px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.15); text-align: center; padding: .85rem 1rem; font-size: .88rem;
}

.dept-banner {
  background:
    linear-gradient(120deg, rgba(1,1,86,.92), rgba(26,35,126,.88)),
    repeating-linear-gradient(45deg, rgba(255,255,255,.05) 0 12px, transparent 12px 24px);
  color: #fff;
  padding: 2.4rem 1rem;
}
.dept-banner-inner { max-width: 1240px; margin: 0 auto; }
.dept-banner h1 {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.35rem);
  letter-spacing: .02em;
}
.dept-banner p { margin: 0; opacity: .92; }
.dept-page { max-width: 1240px; }
.dept-layout { padding-top: 1.35rem; }
.dept-page h2 {
  font-family: var(--font-display);
  color: var(--imc-navy);
  font-size: 1.15rem;
  margin: 1.25rem 0 .35rem;
}
.dept-two-col {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 1.5rem;
  margin-top: .75rem;
}
.faculty-panel { background: #fafbff; border: 1px solid var(--imc-border); padding: 1rem; }
.faculty-group {
  margin: 1rem 0 .35rem;
  color: var(--imc-navy);
  font-size: 1rem;
  font-family: var(--font-display);
}
.faculty-card {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: .85rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--imc-border);
}
.faculty-card:last-child { border-bottom: 0; }
.faculty-card img {
  width: 90px;
  height: 110px;
  object-fit: cover;
  border: 1px solid var(--imc-border);
  background: #fff;
}
.faculty-card h3 {
  margin: 0 0 .15rem;
  font-size: 1rem;
  color: var(--imc-navy);
}
.faculty-card .degrees,
.faculty-card .designation,
.faculty-card .meta-line {
  margin: 0 0 .2rem;
  font-size: .9rem;
}
.faculty-card hr {
  border: 0;
  border-top: 1px solid var(--imc-border);
  margin: .45rem 0;
}
.muted { color: var(--imc-muted); }

@media (max-width: 960px) {
  .sections-grid, .contact-grid, .footer-grid, .dept-two-col { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-block; }
  .main-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--imc-border); padding: .75rem 1rem 1rem;
  }
  .main-nav.open { display: block; }
  .main-nav > ul { flex-direction: column; align-items: stretch; }
  .main-nav .has-sub > ul { position: static; box-shadow: none; border: 0; display: none; padding-left: .75rem; }
  .main-nav .has-sub.open > ul { display: block; }
}