/* ===================================================
   CENTRE OF WATER AND AIR ANALYSIS — Main Stylesheet
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Inter:wght@300;400;500;600&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ── CSS Variables ── */
:root {
  --navy:         #06213a;
  --navy-mid:     #0c3360;
  --teal:         #1a7a8a;
  --teal-light:   #22a3b8;
  --teal-faint:   #e4f4f7;
  --sky:          #eef6f9;
  --water:        #c2e0e8;
  --gold:         #b8892e;
  --gold-light:   #ddb84a;
  --gold-faint:   #fdf6e3;
  --white:        #ffffff;
  --off-white:    #f7fafb;
  --text:         #162535;
  --text-mid:     #3a5168;
  --text-light:   #6a8499;
  --border:       #d3e5ec;
  --border-light: #eaf2f6;
  --shadow-xs:    0 1px 4px rgba(6,33,58,0.06);
  --shadow-sm:    0 2px 10px rgba(6,33,58,0.08);
  --shadow-md:    0 8px 28px rgba(6,33,58,0.11);
  --shadow-lg:    0 20px 56px rgba(6,33,58,0.15);
  --radius:       6px;
  --radius-lg:    14px;
  --radius-xl:    20px;
  --font-display: 'DM Sans', 'Inter', sans-serif;
  --font-body:    'DM Sans', 'Inter', sans-serif;
  --transition:   0.28s ease;
  --nav-h:        70px;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Typography ── */
h1, h2, h3, h4, h5 { font-family: var(--font-display); line-height: 1.3; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.55rem); }
h4 { font-size: 1.05rem; font-family: var(--font-body); font-weight: 600; }
p  { font-size: 0.97rem; color: var(--text-mid); }

.section-label {
  font-family: var(--font-body);
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 6px;
  display: flex; align-items: center; gap: 8px;
}
.section-label::before {
  content: ''; display: inline-block;
  width: 20px; height: 2px; background: var(--teal);
  border-radius: 1px;
}
.section-title { font-family: var(--font-display); color: var(--navy); margin-bottom: 10px; }
.section-divider {
  width: 48px; height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  border-radius: 2px; margin-bottom: 20px;
}
.section-intro {
  font-size: 1rem; color: var(--text-mid);
  max-width: 620px; line-height: 1.85;
}

/* ── Layout ── */
.container { max-width: 1180px; margin: 0 auto; padding: 0 36px; }
.section-pad { padding: 84px 0; }
.bg-off-white { background: var(--off-white); }
.bg-navy  { background: var(--navy); }
.bg-sky   { background: var(--sky); }
.text-center { text-align: center; }

/* ═══════════════════════════════
   PAGE TRANSITION LOADER
═══════════════════════════════ */
#page-loader {
  position: fixed; inset: 0; z-index: 9999;
  background: var(--navy);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 20px;
  pointer-events: none;
  opacity: 0; visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}
#page-loader.active { opacity: 1; visibility: visible; pointer-events: all; }
.loader-logo {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
}
.loader-ripple {
  position: relative; width: 52px; height: 52px;
}
.loader-ripple span {
  position: absolute; inset: 0; border-radius: 50%;
  border: 2px solid var(--teal-light);
  animation: ripple 1.4s ease-out infinite;
  opacity: 0;
}
.loader-ripple span:nth-child(2) { animation-delay: 0.45s; }
.loader-ripple span:nth-child(3) { animation-delay: 0.9s; }
@keyframes ripple {
  0%   { transform: scale(0.3); opacity: 0.8; }
  100% { transform: scale(1);   opacity: 0; }
}
.loader-text {
  font-family: var(--font-display); font-size: 0.85rem;
  color: rgba(255,255,255,0.5); letter-spacing: 0.1em;
}
.loader-bar {
  width: 160px; height: 2px; background: rgba(255,255,255,0.1);
  border-radius: 1px; overflow: hidden;
}
.loader-bar-fill {
  height: 100%; width: 0;
  background: linear-gradient(90deg, var(--teal), var(--gold));
  border-radius: 1px;
  transition: width 0.5s ease;
}

/* ═══════════════════════════════
   TOP BAR
═══════════════════════════════ */
#top-bar {
  background: var(--navy-mid);
  color: rgba(255,255,255,0.7);
  font-size: 0.8rem; padding: 7px 0;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
#top-bar .container { display: flex; justify-content: space-between; align-items: center; }
#top-bar a { color: rgba(255,255,255,0.7); transition: color var(--transition); }
#top-bar a:hover { color: var(--gold-light); }
.top-bar-contact { display: flex; gap: 24px; }
.top-bar-contact span { display: flex; align-items: center; gap: 6px; }

/* ═══════════════════════════════
   NAVBAR
═══════════════════════════════ */
#navbar {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  position: sticky; top: 0; z-index: 1000;
  height: var(--nav-h);
  transition: box-shadow var(--transition), background var(--transition);
}
#navbar.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255,255,255,0.99);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--nav-h); gap: 20px;
}
.nav-brand { display: flex; align-items: center; gap: 13px; }
.nav-brand img { height: 50px; width: 50px; object-fit: contain; }
.nav-brand-icon {
  width: 50px; height: 50px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; }
.brand-name {
  font-family: var(--font-display);
  font-size: 0.97rem; color: var(--navy); line-height: 1.25;
}
.brand-sub {
  font-size: 0.7rem; color: var(--teal);
  font-weight: 500; letter-spacing: 0.04em;
}

/* Nav links */
.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links > li > a {
  font-size: 0.875rem; font-weight: 500;
  color: var(--text-mid); padding: 8px 13px;
  border-radius: var(--radius);
  transition: all var(--transition); white-space: nowrap;
  display: flex; align-items: center; gap: 4px;
}
.nav-links > li > a:hover,
.nav-links > li > a.active { color: var(--teal); background: var(--teal-faint); }

/* Page links — look slightly different for separate pages */
.nav-links .nav-page-link > a {
  color: var(--text); font-weight: 500;
}

.nav-links .nav-cta > a {
  background: var(--teal); color: var(--white) !important;
  padding: 8px 18px; border-radius: var(--radius);
}
.nav-links .nav-cta > a:hover { background: var(--navy) !important; color: white !important; }



/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 6px; background: none; border: none; }
.hamburger span { width: 23px; height: 2px; background: var(--navy); border-radius: 2px; transition: all var(--transition); }
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; width: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ═══════════════════════════════
   HERO / SLIDER
═══════════════════════════════ */
#hero {
  position: relative; overflow: hidden;
  height: min(620px, 82vh); min-height: 420px;
  background: var(--navy);
}
.slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease; }
.slide.active { opacity: 1; }
.slide-img { width: 100%; height: 100%; object-fit: cover; opacity: 0.38; }
.slide-placeholder { width: 100%; height: 100%; }
.slide-placeholder.s1 { background: linear-gradient(140deg,#061b30 0%,#0b3d5a 50%,#1a7a8a 100%); }
.slide-placeholder.s2 { background: linear-gradient(140deg,#083050 0%,#0f4a6e 55%,#1f8fa6 100%); }
.slide-placeholder.s3 { background: linear-gradient(140deg,#06213a 0%,#0f3354 60%,#b8892e 100%); }
/* Decorative water-wave SVG overlay */
.slide-wave {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 90px; opacity: 0.07;
}
.slide-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(6,33,58,0.88) 0%, rgba(6,33,58,0.35) 65%, transparent 100%);
}
.slide-content {
  position: absolute; top: 50%; transform: translateY(-50%);
  left: 0; right: 0;
}
.slide-tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(184,137,46,0.2); border: 1px solid rgba(184,137,46,0.45);
  color: var(--gold-light); font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  padding: 5px 14px; border-radius: 30px; margin-bottom: 16px;
  backdrop-filter: blur(6px);
}
.slide-content h2 {
  color: var(--white); font-size: clamp(1.6rem, 3.8vw, 3rem);
  font-weight: 400; line-height: 1.22;
  text-shadow: 0 2px 16px rgba(0,0,0,0.28); margin-bottom: 14px;
  max-width: 620px;
}
.slide-content p {
  color: rgba(255,255,255,0.78);
  font-size: clamp(0.9rem, 1.4vw, 1.05rem);
  max-width: 500px; line-height: 1.75;
}
.slide-controls {
  position: absolute; bottom: 28px; left: 0; right: 0;
}
.slide-controls .container {
  display: flex; align-items: center; justify-content: space-between;
}
.slider-dots { display: flex; gap: 7px; align-items: center; }
.dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: rgba(255,255,255,0.35); cursor: pointer;
  transition: all var(--transition); border: none; padding: 0;
}
.dot.active { background: var(--gold-light); width: 22px; border-radius: 3px; }
.slider-arrows { display: flex; gap: 8px; }
.slider-btn {
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.25);
  color: white; cursor: pointer; font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition); backdrop-filter: blur(4px);
}
.slider-btn:hover { background: var(--teal); border-color: var(--teal); }

/* ═══════════════════════════════
   STATS BAR
═══════════════════════════════ */
#stats-bar { background: var(--navy); padding: 28px 0; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: rgba(255,255,255,0.06); border-radius: var(--radius-lg); overflow: hidden;
}
.stat-item {
  background: rgba(255,255,255,0.04);
  text-align: center; padding: 22px 16px;
  transition: background var(--transition);
}
.stat-item:hover { background: rgba(26,122,138,0.18); }
.stat-num {
  font-family: var(--font-display); font-size: 2.3rem;
  color: var(--gold-light); line-height: 1; margin-bottom: 5px;
}
.stat-label { font-size: 0.78rem; color: rgba(255,255,255,0.55); letter-spacing: 0.05em; }

/* ═══════════════════════════════
   ABOUT
═══════════════════════════════ */
.about-grid {
  display: grid; grid-template-columns: 1fr 1.1fr;
  gap: 72px; align-items: center;
}
.about-image-block { position: relative; }
.about-img-main, .about-img-placeholder {
  width: 100%; border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg); aspect-ratio: 4/3; object-fit: cover;
}
.about-img-placeholder {
  background: linear-gradient(135deg, var(--sky) 0%, var(--water) 100%);
  display: flex; align-items: center; justify-content: center;
  flex-direction: column; gap: 12px;
}
.about-img-placeholder .placeholder-icon { font-size: 4rem; opacity: 0.35; }
.about-img-placeholder p { color: var(--text-light); font-size: 0.82rem; }
.about-float-badge {
  position: absolute; bottom: -18px; right: -18px;
  background: var(--navy); color: var(--white);
  border-radius: var(--radius-lg); padding: 18px 22px;
  box-shadow: var(--shadow-md); text-align: center;
  border: 2px solid var(--teal);
}
.about-float-badge .bf-num {
  font-family: var(--font-display); font-size: 1.9rem; color: var(--gold-light); line-height: 1;
}
.about-float-badge .bf-label { font-size: 0.7rem; color: rgba(255,255,255,0.6); margin-top: 3px; }
.about-text p { margin-bottom: 1rem; line-height: 1.9; }
.about-highlights {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 10px; margin-top: 24px;
}
.highlight-item {
  background: var(--sky); border-left: 3px solid var(--teal);
  padding: 11px 15px; border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.85rem; color: var(--text-mid); font-weight: 500;
}

/* ═══════════════════════════════
   VISION & MISSION
═══════════════════════════════ */
.vm-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 48px; }
.vm-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 40px 36px;
  position: relative; overflow: hidden;
  box-shadow: var(--shadow-sm); transition: box-shadow var(--transition);
}
.vm-card:hover { box-shadow: var(--shadow-md); }
.vm-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.vm-card.vision::before  { background: linear-gradient(90deg, var(--teal), var(--navy)); }
.vm-card.mission::before { background: linear-gradient(90deg, var(--gold), var(--teal)); }
.vm-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; margin-bottom: 18px;
}
.vm-card.vision .vm-icon  { background: rgba(26,122,138,0.09); }
.vm-card.mission .vm-icon { background: rgba(184,137,46,0.09); }
.vm-card h3 { color: var(--navy); margin-bottom: 14px; }
.vm-card p  { font-size: 0.93rem; line-height: 1.85; }
.vm-card ul { padding-left: 18px; list-style: disc; }
.vm-card ul li { font-size: 0.93rem; color: var(--text-mid); line-height: 1.8; margin-bottom: 6px; }

/* ═══════════════════════════════
   OBJECTIVES
═══════════════════════════════ */
.objectives-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 22px; margin-top: 48px;
}
.obj-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 32px 26px;
  transition: all var(--transition); box-shadow: var(--shadow-xs);
  position: relative; overflow: hidden;
}
.obj-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px; background: linear-gradient(90deg, var(--teal), var(--navy));
  transform: scaleX(0); transform-origin: left; transition: transform var(--transition);
}
.obj-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.obj-card:hover::after { transform: scaleX(1); }
.obj-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--navy); color: var(--gold-light);
  font-family: var(--font-display); font-size: 1rem;
  margin-bottom: 14px;
}
.obj-card h4 { color: var(--navy); margin-bottom: 8px; font-size: 0.98rem; }
.obj-card p  { font-size: 0.88rem; line-height: 1.75; }

/* ═══════════════════════════════
   ACTIVITIES & SERVICES
═══════════════════════════════ */
.activities-tabs {
  display: flex; gap: 0; flex-wrap: wrap; margin-bottom: 36px;
  background: var(--sky); border-radius: 40px; padding: 4px;
  width: fit-content;
}
.tab-btn {
  padding: 9px 26px; font-size: 0.86rem; font-weight: 500;
  border: none; background: none; cursor: pointer;
  color: var(--text-light); border-radius: 36px;
  transition: all var(--transition); font-family: var(--font-body);
}
.tab-btn.active { background: var(--white); color: var(--teal); box-shadow: var(--shadow-xs); }
.tab-btn:hover:not(.active) { color: var(--text); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card {
  border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: 28px 24px; background: var(--white);
  transition: all var(--transition); box-shadow: var(--shadow-xs);
}
.service-card:hover { box-shadow: var(--shadow-md); border-color: var(--teal); transform: translateY(-3px); }
.service-icon { font-size: 1.9rem; margin-bottom: 13px; display: block; }
.service-card h4 { color: var(--navy); margin-bottom: 8px; font-size: 0.95rem; }
.service-card p  { font-size: 0.87rem; line-height: 1.75; }

/* ═══════════════════════════════
   FACULTY (also used on team.html)
═══════════════════════════════ */
.faculty-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 24px; margin-top: 48px;
}
.faculty-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-xl); overflow: hidden;
  box-shadow: var(--shadow-xs); transition: all var(--transition);
  text-align: center;
}
.faculty-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.faculty-img-wrap {
  aspect-ratio: 1; overflow: hidden;
  background: linear-gradient(135deg, var(--sky), var(--water));
}
.faculty-img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.faculty-card:hover .faculty-img-wrap img { transform: scale(1.05); }
.faculty-img-placeholder {
  width: 100%; height: 100%; aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: 3.5rem; color: var(--teal); opacity: 0.4;
  background: linear-gradient(135deg, var(--sky), var(--water));
}
.faculty-info { padding: 18px 14px; }
.faculty-info h4 { font-size: 0.95rem; color: var(--navy); margin-bottom: 4px; font-family: var(--font-body); font-weight: 600; }
.faculty-info .designation { font-size: 0.8rem; color: var(--teal); font-weight: 500; margin-bottom: 3px; }
.faculty-info .dept { font-size: 0.76rem; color: var(--text-light); }

/* ═══════════════════════════════
   ADVISORY COMMITTEE
═══════════════════════════════ */
.advisory-grid {
  display: grid; grid-template-columns: repeat(3, minmax(260px, 1fr));
  gap: 32px; margin-top: 48px;
}
.advisory-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 32px 28px;
  display: flex; flex-direction: column; align-items: center;
  text-align: center;
  box-shadow: var(--shadow-xs); transition: all var(--transition);
}
.advisory-card:hover { box-shadow: var(--shadow-md); border-color: var(--navy); }
.advisory-avatar,
.advisory-avatar-placeholder {
  width: 180px; height: 180px; border-radius: 28px;
  object-fit: cover; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--border);
  margin-bottom: 22px;
}
.advisory-avatar-placeholder { font-size: 3.4rem; color: var(--teal); background: var(--sky); }
.advisory-info h4 { font-size: 1.1rem; color: var(--navy); margin-bottom: 8px; font-family: var(--font-body); font-weight: 700; }
.advisory-info .ac-role { font-size: 0.9rem; color: var(--teal); font-weight: 700; margin-bottom: 10px; }
.advisory-info .ac-org { font-size: 0.92rem; color: var(--text-mid); line-height: 1.8; margin-bottom: 20px; }
.know-more-link {
  display: inline-flex; padding: 12px 24px; border-radius: 999px;
  background: var(--teal); color: white; font-weight: 700;
  transition: background var(--transition), transform var(--transition);
}
.know-more-link:hover { background: var(--navy); transform: translateY(-1px); }

/* ═══════════════════════════════
   INSTRUMENTS
═══════════════════════════════ */
.instruments-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 48px; }
.instrument-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-xl); overflow: hidden;
  box-shadow: var(--shadow-xs); transition: all var(--transition);
}
.instrument-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.instrument-img { aspect-ratio: 4/3; overflow: hidden; background: var(--sky); position: relative; }
.instrument-img img { width: 100%; height: 100%; object-fit: cover; }
.instrument-img-placeholder {
  width: 100%; height: 100%; aspect-ratio: 4/3;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem; color: var(--teal); opacity: 0.45;
}
.instrument-body { padding: 16px 15px; }
.instrument-body h4 { font-size: 0.88rem; color: var(--navy); margin-bottom: 5px; font-family: var(--font-body); font-weight: 600; line-height: 1.4; }
.instrument-body p  { font-size: 0.8rem; line-height: 1.65; }
.instrument-badge {
  display: inline-block; margin-top: 9px;
  background: var(--teal-faint); color: var(--teal);
  font-size: 0.7rem; font-weight: 600; padding: 3px 10px;
  border-radius: 20px;
}

/* ═══════════════════════════════
   LEADERSHIP
═══════════════════════════════ */
.leadership-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; max-width: 840px; margin: 48px auto 0; }
.leader-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 34px;
  display: flex; gap: 22px; align-items: flex-start;
  box-shadow: var(--shadow-sm); transition: all var(--transition);
}
.leader-card:hover { box-shadow: var(--shadow-md); }
.leader-photo, .leader-photo-placeholder {
  width: 84px; height: 84px; border-radius: 50%; flex-shrink: 0;
  border: 3px solid var(--teal);
}
.leader-photo { object-fit: cover; }
.leader-photo-placeholder {
  background: linear-gradient(135deg, var(--sky), var(--water));
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; color: var(--navy);
}
.leader-info h3 { font-size: 1.05rem; color: var(--navy); margin-bottom: 3px; }
.leader-info .role {
  font-size: 0.74rem; color: var(--teal); font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: 14px;
}
.leader-contact a { display: flex; align-items: center; gap: 7px; font-size: 0.84rem; color: var(--text-mid); margin-bottom: 6px; transition: color var(--transition); }
.leader-contact a:hover { color: var(--teal); }

/* ═══════════════════════════════
   PAGE HERO (inner pages)
═══════════════════════════════ */
.page-hero {
  background: linear-gradient(130deg, var(--navy) 0%, var(--navy-mid) 60%, var(--teal) 100%);
  padding: 70px 0 60px; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.025'%3E%3Ccircle cx='30' cy='30' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero-label {
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--gold-light);
  display: flex; align-items: center; gap: 8px; margin-bottom: 10px;
}
.page-hero-label::before { content: ''; width: 20px; height: 2px; background: var(--gold-light); border-radius: 1px; display: inline-block; }
.page-hero h1 { color: var(--white); font-size: clamp(1.8rem, 3.5vw, 2.8rem); margin-bottom: 12px; }
.page-hero p  { color: rgba(255,255,255,0.72); font-size: 1rem; max-width: 560px; line-height: 1.8; }
.page-hero-breadcrumb {
  display: flex; align-items: center; gap: 6px;
  margin-top: 22px; font-size: 0.82rem;
}
.page-hero-breadcrumb a { color: rgba(255,255,255,0.55); transition: color var(--transition); }
.page-hero-breadcrumb a:hover { color: var(--gold-light); }
.page-hero-breadcrumb .sep { color: rgba(255,255,255,0.3); }
.page-hero-breadcrumb .current { color: rgba(255,255,255,0.85); }

/* ═══════════════════════════════
   RESEARCH PAGE — Highlights, Deliverables
═══════════════════════════════ */
.research-intro-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; }
.deliverables-section { margin-top: 64px; }
.deliverable-category { margin-bottom: 48px; }
.deliverable-category-title {
  font-family: var(--font-body); font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; color: var(--teal);
  border-top: 2px solid var(--border); padding-top: 20px; margin-bottom: 24px;
}
.deliverables-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.deliverable-card {
  border: 1px solid var(--border); border-radius: var(--radius-xl);
  padding: 28px 24px; background: var(--white);
  box-shadow: var(--shadow-xs); transition: all var(--transition);
}
.deliverable-card:hover { box-shadow: var(--shadow-md); border-color: var(--teal); transform: translateY(-3px); }
.deliverable-card .dc-icon {
  width: 44px; height: 44px; background: var(--teal-faint);
  border-radius: 10px; display: flex; align-items: center;
  justify-content: center; font-size: 1.3rem; margin-bottom: 14px;
}
.deliverable-card h4 { color: var(--navy); margin-bottom: 8px; font-size: 0.95rem; }
.deliverable-card ul { padding-left: 0; list-style: none; }
.deliverable-card ul li {
  font-size: 0.85rem; color: var(--text-mid); line-height: 1.7;
  padding: 4px 0; border-bottom: 1px solid var(--border-light);
  display: flex; gap: 6px;
}
.deliverable-card ul li::before { content: '·'; color: var(--teal); font-size: 1.2rem; line-height: 1.3; flex-shrink: 0; }
.deliverable-card ul li:last-child { border-bottom: none; }

/* ═══════════════════════════════
   PLACEHOLDER SECTIONS
═══════════════════════════════ */
.placeholder-section {
  border: 2px dashed var(--border); border-radius: var(--radius-xl);
  padding: 60px 32px; text-align: center; background: var(--off-white);
}
.placeholder-section .ph-icon { font-size: 2.8rem; opacity: 0.3; margin-bottom: 14px; }
.placeholder-section h3 { color: var(--text-light); margin-bottom: 8px; font-size: 1.2rem; }
.placeholder-section p { font-size: 0.86rem; color: var(--text-light); }
.placeholder-badge {
  display: inline-block; margin-top: 14px;
  background: var(--border); color: var(--text-light);
  font-size: 0.7rem; font-weight: 700; padding: 4px 14px;
  border-radius: 20px; letter-spacing: 0.1em; text-transform: uppercase;
}

/* ═══════════════════════════════
   FOOTER
═══════════════════════════════ */
#footer { background: var(--navy); color: rgba(255,255,255,0.72); padding: 64px 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px; padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-logo-text .fn { font-family: var(--font-display); font-size: 0.95rem; color: var(--white); }
.footer-logo-text .fs { font-size: 0.7rem; color: rgba(255,255,255,0.45); }
.footer-brand p { font-size: 0.87rem; line-height: 1.8; margin-bottom: 20px; }
.footer-col h5 { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--white); margin-bottom: 16px; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { font-size: 0.86rem; transition: color var(--transition); }
.footer-col a:hover { color: var(--gold-light); }
.footer-col .contact-line { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 10px; font-size: 0.86rem; }
.footer-bar { text-align: center; padding: 20px 0; font-size: 0.8rem; color: rgba(255,255,255,0.35); }
.footer-bar a { color: rgba(255,255,255,0.5); }
.footer-bar a:hover { color: var(--gold-light); }

/* ═══════════════════════════════
   BACK TO TOP
═══════════════════════════════ */
#back-top {
  position: fixed; bottom: 26px; right: 26px; z-index: 999;
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--teal); color: white;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; box-shadow: var(--shadow-md);
  cursor: pointer; opacity: 0; visibility: hidden;
  transition: all var(--transition); border: none;
}
#back-top.visible { opacity: 1; visibility: visible; }
#back-top:hover { background: var(--navy); transform: translateY(-2px); }

/* ═══════════════════════════════
   UTILITIES & ANIMATIONS
═══════════════════════════════ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 26px; border-radius: var(--radius);
  font-size: 0.88rem; font-weight: 600; cursor: pointer;
  transition: all var(--transition); border: none;
  font-family: var(--font-body); letter-spacing: 0.02em;
}
.btn-primary  { background: var(--teal); color: white; }
.btn-primary:hover { background: var(--navy); }
.btn-outline  { background: transparent; color: var(--teal); border: 2px solid var(--teal); }
.btn-outline:hover { background: var(--teal); color: white; }

.fade-in { opacity: 0; transform: translateY(20px); transition: opacity 0.55s ease, transform 0.55s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }

/* ═══════════════════════════════
   RESPONSIVE
═══════════════════════════════ */
@media (max-width: 1040px) {
  .faculty-grid     { grid-template-columns: repeat(3, 1fr); }
  .instruments-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid      { grid-template-columns: 1fr 1fr; gap: 32px; }
  .about-grid       { gap: 48px; }
  .research-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .deliverables-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section-pad { padding: 60px 0; }
  #top-bar { display: none; }
  .nav-links { display: none; position: absolute; top: var(--nav-h); left: 0; right: 0; background: var(--white); padding: 12px 16px 20px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); flex-direction: column; gap: 2px; z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-links > li > a { padding: 11px 14px; border-radius: var(--radius); }
  .hamburger { display: flex; }
  .dropdown-menu { position: static; opacity: 1 !important; visibility: visible !important; transform: none !important; box-shadow: none; border: none; padding-left: 12px; margin-top: 4px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-float-badge { right: 12px; bottom: -14px; }
  .vm-grid { grid-template-columns: 1fr; }
  .objectives-grid { grid-template-columns: 1fr 1fr; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .faculty-grid { grid-template-columns: 1fr 1fr; }
  .advisory-grid { grid-template-columns: 1fr; }
  .instruments-grid { grid-template-columns: 1fr 1fr; }
  .leadership-grid { grid-template-columns: 1fr; max-width: 100%; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  #hero { height: 500px; }
  .deliverables-grid { grid-template-columns: 1fr; }
  .about-highlights { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .objectives-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .instruments-grid { grid-template-columns: 1fr; }
  .faculty-grid { grid-template-columns: 1fr 1fr; }
  .slide-content h2 { font-size: 1.5rem; }
}
/* ── VISION & MISSION v2 (reference layout) ─────────────────────── */
.vm2-row {
  display: flex;
  align-items: center;
  gap: 80px;
  padding: 60px 0;
  border-bottom: 1px solid var(--border);
}

.vm2-row:last-child {
  border-bottom: none;
}

.vm2-row-reverse {
  flex-direction: row-reverse;
}

/* Image column */
.vm2-image-col {
  position: relative;
  flex: 0 0 42%;
  max-width: 42%;
}

.vm2-photo {
  width: 100%;
  max-width: 460px;
  height: auto;
  display: block;
  border-radius: 4px;
}

.vm2-photo-placeholder {
  width: 100%;
  max-width: 460px;
  height: 320px;
  background: #eef2f7;
  border-radius: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: #aaa;
  font-size: 0.85rem;
}

.vm2-photo-placeholder span {
  font-size: 3rem;
  opacity: 0.3;
}

/* Dotted grid decoration (like the reference site) */
.vm2-dots {
  position: absolute;
  width: 120px;
  height: 100px;
  background-image: radial-gradient(circle, #b0bec5 1.5px, transparent 1.5px);
  background-size: 14px 14px;
  opacity: 0.55;
  z-index: -1;
}

.vm2-dots-br {
  bottom: -24px;
  right: -24px;
}

.vm2-dots-bl {
  bottom: -24px;
  left: 40px;
}

/* Text column */
.vm2-text-col {
  flex: 1;
}

.vm2-heading {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: #0d1f5c; /* deep navy, matching reference */
  margin-bottom: 28px;
  line-height: 1.2;
}

.vm2-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.vm2-list li {
  position: relative;
  padding-left: 18px;
  font-size: 1rem;
  line-height: 1.7;
  color: #3a4060;
}

.vm2-list li::before {
  content: '▪';
  position: absolute;
  left: 0;
  top: 0;
  color: #0d1f5c;
  font-size: 0.75rem;
  line-height: 1.9;
}

/* Responsive */
@media (max-width: 860px) {
  .vm2-row,
  .vm2-row-reverse {
    flex-direction: column;
    gap: 36px;
    padding: 48px 0;
  }

  .vm2-image-col {
    flex: unset;
    max-width: 100%;
    width: 100%;
  }

  .vm2-photo,
  .vm2-photo-placeholder {
    max-width: 100%;
  }

  .vm2-heading {
    font-size: 1.9rem;
  }
}
/* ── Image name label bar ─────────────────────────────────────── */
.vm2-image-label {
  display: flex;
  flex-direction: column;
  background: #0d1f5c;
  color: #fff;
  padding: 10px 18px;
  border-radius: 0 0 4px 4px;
  max-width: 460px;
}

.vm2-image-label span {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.vm2-image-role {
  font-size: 0.78rem !important;
  font-weight: 400 !important;
  color: rgba(255, 255, 255, 0.65) !important;
  margin-top: 2px;
}
/* ── FACULTY CARD OVERLAY BUTTONS ─────────────────────────────── */
.faculty-img-wrap {
  position: relative;
  overflow: visible;
}

.fc-mail-btn,
.fc-info-btn {
  position: absolute;
  top: 8px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.22s ease;
  z-index: 2;
  border: none;
  text-decoration: none;
  font-size: 0.95rem;
  line-height: 1;
}

.fc-mail-btn {
  left: 8px;
  top: 8px;
  background: #0d1f5c;
  color: #fff;
}

.fc-mail-btn:hover {
  background: var(--teal);
  transform: scale(1.1);
}

.fc-info-btn {
  left: 8px;
  top: 46px;
  background: rgba(255, 255, 255, 0.92);
  color: #0d1f5c;
  font-size: 1.05rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.fc-info-btn:hover {
  background: #0d1f5c;
  color: #fff;
  transform: scale(1.1);
}

/* ── FACULTY MODAL ─────────────────────────────────────────────── */
.fm-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 20, 50, 0.55);
  backdrop-filter: blur(4px);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.fm-overlay.open {
  display: flex;
}

.fm-panel {
  background: #fff;
  border-radius: 16px;
  max-width: 820px;
  width: 100%;
  max-height: 90vh;
  overflow: hidden;
  position: relative;
  box-shadow: 0 24px 64px rgba(0,0,0,0.2);
  animation: fm-slide-in 0.28s ease;
}

@keyframes fm-slide-in {
  from { opacity: 0; transform: translateY(24px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.fm-close {
  position: sticky;
  top: 16px;
  float: right;
  margin: 16px 16px 0 0;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: #f0f2f5;
  color: #333;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.18s;
  z-index: 10;
}

.fm-close:hover {
  background: #0d1f5c;
  color: #fff;
}

.fm-inner {
  display: flex;
  gap: 36px;
  padding: 32px 36px 40px;
  clear: both;
  max-height: calc(90vh - 84px);
  overflow: hidden;
}

.fm-left {
  flex: 0 0 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  align-self: flex-start;
}

.fm-photo {
  width: 180px;
  height: 210px;
  object-fit: cover;
  border-radius: 10px;
  border: 3px solid #eef2f7;
}

.fm-email-link {
  display: flex;
  align-items: center;
  gap: 7px;
  background: #0d1f5c;
  color: #fff;
  padding: 8px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
  width: 100%;
  justify-content: center;
  transition: background 0.2s;
}

.fm-email-link:hover {
  background: var(--teal);
}

.fm-right {
  flex: 1;
  min-height: 0;
  max-height: 100%;
  overflow-y: auto;
  padding-right: 2px;
}

.fm-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 6px;
}

.fm-name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: #0d1f5c;
  margin-bottom: 4px;
}

.fm-designation {
  font-size: 0.92rem;
  font-weight: 600;
  color: #333;
  margin-bottom: 2px;
}

.fm-dept {
  font-size: 0.85rem;
  color: var(--text-light);
}

.fm-divider {
  height: 1px;
  background: #eef2f7;
  margin: 16px 0;
}

.fm-bio {
  font-size: 0.9rem;
  line-height: 1.75;
  color: #444;
  margin-bottom: 20px;
}

.fm-research-wrap h5,
.fm-edu-wrap h5 {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #0d1f5c;
  margin-bottom: 10px;
}

.fm-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 20px;
}

.fm-tag {
  background: #eef2f7;
  color: #0d1f5c;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
}

.fm-edu-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.fm-edu-list li {
  font-size: 0.85rem;
  color: #444;
  padding-left: 14px;
  position: relative;
}

.fm-edu-list li::before {
  content: '▪';
  position: absolute;
  left: 0;
  color: var(--teal);
}

/* Responsive */
@media (max-width: 640px) {
  .fm-inner {
    flex-direction: column;
    padding: 24px 20px 32px;
    gap: 24px;
  }
  .fm-left {
    flex: unset;
    flex-direction: row;
    align-items: flex-start;
    gap: 18px;
  }
  .fm-photo {
    width: 100px;
    height: 120px;
  }
  .fm-email-link {
    width: auto;
  }
}