/* ============================================================
   Department of Philosophy – Niger Delta University
   Stylesheet | WCAG 2.2 AA Compliant
   Colour Palette: Gold · Navy Blue · Forest Green
   ============================================================ */

/* ── 1. CSS Custom Properties ──────────────────────────────── */
:root {
  /* Brand Colours */
  --navy:          #002060;   /* Primary navy  – 15.5:1 on white */
  --navy-mid:      #003087;   /* Mid navy      – 11.8:1 on white */
  --navy-light:    #1A4480;   /* Hover navy    – 8.0:1  on white */
  --navy-pale:     #EEF2F8;   /* Tint bg */

  --gold:          #C9A227;   /* Gold accent   – 4.9:1  on navy  */
  --gold-dark:     #7D5A00;   /* Gold text     – 6.3:1  on white */
  --gold-pale:     #FBF3D5;   /* Tint bg */

  --green:         #1B5E20;   /* Forest green  – 7.9:1  on white */
  --green-mid:     #2E7D32;   /* Mid green */
  --green-pale:    #EBF5EC;   /* Tint bg */

  /* Neutral */
  --white:         #FFFFFF;
  --off-white:     #FAFAF8;
  --gray-100:      #F5F5F5;
  --gray-200:      #E8E8E8;
  --gray-400:      #9E9E9E;
  --gray-600:      #616161;   /* 5.7:1 on white */
  --gray-800:      #2E2E2E;   /* 13.0:1 on white */
  --gray-900:      #161616;

  /* Section Backgrounds */
  --bg-light:      #FAFAF8;
  --bg-dark-navy:  #001540;
  --bg-dark-green: #0A2E0D;

  /* Typography */
  --font-serif: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Radii */
  --r-sm:   4px;
  --r-md:   8px;
  --r-lg:   12px;
  --r-xl:   20px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.12), 0 1px 2px rgba(0,0,0,.08);
  --shadow-md: 0 4px 8px rgba(0,0,0,.12), 0 2px 4px rgba(0,0,0,.08);
  --shadow-lg: 0 10px 30px rgba(0,0,0,.15);
  --shadow-xl: 0 20px 50px rgba(0,0,0,.2);

  /* Transitions */
  --t-fast: 150ms ease;
  --t-base: 300ms ease;
  --t-slow: 500ms ease;

  /* Layout */
  --container-max: 1200px;
  --nav-h: 72px;
  --util-h: 38px;
}

/* ── 2. Reset & Base ────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + var(--util-h) + 8px);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--gray-800);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--navy-mid);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--t-fast);
}

a:hover {
  color: var(--green);
}

ul, ol {
  list-style: none;
}

address {
  font-style: normal;
}

/* ── 3. Accessibility ───────────────────────────────────────── */

/* Skip link – WCAG 2.4.1 */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--sp-4);
  z-index: 9999;
  padding: var(--sp-3) var(--sp-6);
  background: var(--navy);
  color: var(--gold);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 0 0 var(--r-md) var(--r-md);
  text-decoration: none;
  transition: top var(--t-base);
}

.skip-link:focus {
  top: 0;
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* WCAG 2.4.13 – Focus Appearance */
*:focus-visible {
  outline: 3px solid var(--gold-dark);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* Override on dark backgrounds – gold has 4.9:1 on navy */
.utility-bar *:focus-visible,
.programmes-section *:focus-visible,
.research-section *:focus-visible,
.contact-section *:focus-visible,
.site-footer *:focus-visible {
  outline-color: var(--gold);
}

/* Remove focus style when not keyboard navigating */
*:focus:not(:focus-visible) {
  outline: none;
}

/* Required field indicator */
.required {
  color: #B71C1C;
  margin-left: var(--sp-1);
  font-weight: 700;
}

/* ── 4. Typography ──────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.25;
  color: var(--navy);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.1rem; }

p { margin-bottom: var(--sp-4); }
p:last-child { margin-bottom: 0; }

.lead-text {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--gray-800);
}

/* ── 5. Layout ──────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

.section {
  padding-block: var(--sp-20);
}

/* Section header shared styles */
.section-header {
  text-align: center;
  margin-bottom: var(--sp-12);
}

.section-title {
  color: var(--navy);
  margin-bottom: var(--sp-4);
}

.section-title--light {
  color: var(--white);
}

.section-divider {
  width: 64px;
  height: 4px;
  background: var(--navy-mid);
  border-radius: var(--r-full);
  margin: var(--sp-4) auto;
}

.section-divider--gold {
  background: var(--gold);
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-600);
  max-width: 640px;
  margin-inline: auto;
  margin-top: var(--sp-2);
}

.section-subtitle--light {
  color: rgba(255,255,255,.8);
}

/* ── 6. Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.6em 1.4em;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--t-base), color var(--t-base),
              border-color var(--t-base), box-shadow var(--t-base),
              transform var(--t-fast);
  white-space: nowrap;
  line-height: 1.4;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn-lg {
  padding: 0.75em 1.75em;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 0.4em 0.9em;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Primary – navy */
.btn-primary {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn-primary:hover {
  background: var(--navy-light);
  border-color: var(--navy-light);
  color: var(--white);
}

/* Secondary – white outlined */
.btn-secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.75);
}
.btn-secondary:hover {
  background: rgba(255,255,255,.15);
  color: var(--white);
  border-color: var(--white);
}

/* Gold */
.btn-gold {
  background: var(--gold);
  color: var(--navy);
  border-color: var(--gold);
}
.btn-gold:hover {
  background: #b5911e;
  border-color: #b5911e;
  color: var(--navy);
}

/* Outline navy */
.btn-outline-navy {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-outline-navy:hover {
  background: var(--navy);
  color: var(--white);
}

/* Outline white */
.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.7);
}
.btn-outline-white:hover {
  background: rgba(255,255,255,.15);
  color: var(--white);
}

/* Outline green */
.btn-outline-green {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}
.btn-outline-green:hover {
  background: var(--green);
  color: var(--white);
}

/* ── 7. Badge / Tag ─────────────────────────────────────────── */
.spec-tag {
  display: inline-block;
  padding: 0.2em 0.7em;
  font-size: 0.78rem;
  font-weight: 500;
  background: var(--navy-pale);
  color: var(--navy);
  border-radius: var(--r-full);
  border: 1px solid rgba(0,32,96,.15);
}

.spec-tag--sm {
  font-size: 0.72rem;
  padding: 0.15em 0.5em;
}

/* ── 8. Utility Bar ─────────────────────────────────────────── */
.utility-bar {
  background: var(--bg-dark-navy);
  color: rgba(255,255,255,.85);
  font-size: 0.82rem;
  height: var(--util-h);
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 200;
}

.utility-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
}

.utility-bar__left {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-style: italic;
}

.utility-bar__left i {
  color: var(--gold);
  flex-shrink: 0;
}

.utility-bar__right {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.utility-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--t-fast);
  padding: var(--sp-1) 0;
}

.utility-link:hover {
  color: var(--gold);
}

.utility-link i {
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* ── 9. Site Header / Navigation ────────────────────────────── */
.site-header {
  position: sticky;
  top: var(--util-h);
  z-index: 190;
  background: var(--white);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--t-base);
}

.site-header.is-scrolled {
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  width: 100%;
}

/* Brand */
.header-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
}

.header-logo {
  width: auto;
  height: 52px;
  object-fit: contain;
}

.header-title {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.header-dept-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--navy);
}

.header-faculty-name {
  font-size: 0.75rem;
  color: var(--gray-600);
  font-weight: 400;
}

/* Nav list */
.primary-nav .nav-list {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.nav-link {
  display: inline-block;
  padding: var(--sp-2) var(--sp-3);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--gray-800);
  text-decoration: none;
  border-radius: var(--r-sm);
  border-bottom: 2px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.nav-link:hover {
  color: var(--navy);
  background: var(--navy-pale);
}

.nav-link.is-active {
  color: var(--navy);
  border-bottom-color: var(--gold);
  font-weight: 600;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 22px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
}

.hamburger-bar {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--navy);
  border-radius: var(--r-full);
  transition: transform var(--t-base), opacity var(--t-fast);
}

.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1) {
  transform: translateY(9.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3) {
  transform: translateY(-9.5px) rotate(-45deg);
}

/* ── 10. Hero Section ───────────────────────────────────────── */
.hero {
  position: relative;
  min-height: calc(100svh - var(--nav-h) - var(--util-h));
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
  padding-block: var(--sp-24) var(--sp-16);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg,
      var(--bg-dark-navy) 0%,
      var(--navy-mid) 45%,
      var(--green) 100%);
  z-index: 0;
}

/* Decorative circles */
.hero-bg::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,162,39,.18) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.hero-bg::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27,94,32,.35) 0%, transparent 70%);
  bottom: -80px;
  left: 10%;
}

/* Wave bottom shape */
.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--white);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-10);
  align-items: center;
  width: 100%;
}

.hero-badge {
  display: inline-block;
  padding: 0.3em 1em;
  border: 1px solid rgba(201,162,39,.6);
  border-radius: var(--r-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gold);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--sp-5);
}

.hero-heading {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: var(--sp-5);
  text-shadow: 0 2px 8px rgba(0,0,0,.3);
}

.hero-highlight {
  color: var(--gold);
  display: block;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: rgba(255,255,255,.9);
  line-height: 1.7;
  margin-bottom: var(--sp-4);
  max-width: 560px;
}

.hero-motto {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--gold);
  font-size: 1.05rem;
  margin-bottom: var(--sp-8);
}

.motto-divider {
  font-size: 0.7rem;
  opacity: .7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.hero-crest {
  flex-shrink: 0;
}

.hero-logo-img {
  width: clamp(120px, 18vw, 220px);
  filter: drop-shadow(0 8px 24px rgba(0,0,0,.4));
  opacity: .92;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  z-index: 1;
  color: rgba(255,255,255,.6);
  font-size: 0.7rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.scroll-mouse {
  display: block;
  width: 22px;
  height: 36px;
  border: 2px solid rgba(255,255,255,.5);
  border-radius: 11px;
  position: relative;
}

.scroll-mouse::before {
  content: '';
  position: absolute;
  width: 4px;
  height: 6px;
  background: rgba(255,255,255,.8);
  border-radius: 2px;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-dot 2s ease-in-out infinite;
}

@keyframes scroll-dot {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  60% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ── 11. Stats Bar ──────────────────────────────────────────── */
.stats-section {
  background: var(--gold-pale);
  border-top: 3px solid var(--gold);
  border-bottom: 3px solid var(--gold);
  padding-block: var(--sp-10);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-6);
  text-align: center;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
}

.stat-number {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--navy);
  line-height: 1;
  display: block;
}

.stat-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gold-dark);
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* Divider between stats */
.stat-item + .stat-item {
  border-left: 1px solid rgba(201,162,39,.35);
  padding-left: var(--sp-4);
}

/* ── 12. About Section ──────────────────────────────────────── */
.about-section {
  background: var(--white);
}

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: start;
  margin-bottom: var(--sp-16);
}

.about-text p {
  color: var(--gray-600);
  margin-bottom: var(--sp-5);
}

.about-cta {
  margin-top: var(--sp-6);
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}

.highlight-card {
  padding: var(--sp-6);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  position: relative;
  overflow: hidden;
}

.highlight-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
}

.highlight-card--navy {
  background: var(--navy-pale);
  border: 1px solid rgba(0,32,96,.1);
}

.highlight-card--navy::before { background: var(--navy); }
.highlight-card--navy h3 { color: var(--navy); }

.highlight-card--green {
  background: var(--green-pale);
  border: 1px solid rgba(27,94,32,.12);
}

.highlight-card--green::before { background: var(--green); }
.highlight-card--green h3 { color: var(--green); }

.highlight-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.highlight-card--navy .highlight-icon {
  background: var(--navy);
  color: var(--gold);
}

.highlight-card--green .highlight-icon {
  background: var(--green);
  color: var(--white);
}

.highlight-card p {
  color: var(--gray-600);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 0;
}

/* Values */
.values-section { margin-top: var(--sp-4); }

.values-title {
  text-align: center;
  margin-bottom: var(--sp-8);
  font-size: 1.4rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.value-item {
  text-align: center;
  padding: var(--sp-6);
  border-radius: var(--r-lg);
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  transition: transform var(--t-base), box-shadow var(--t-base);
}

.value-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.value-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--navy) 0%, var(--green) 100%);
  color: var(--gold);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--sp-4);
}

.value-item h4 {
  font-size: 1rem;
  color: var(--navy);
  margin-bottom: var(--sp-2);
}

.value-item p {
  font-size: 0.87rem;
  color: var(--gray-600);
  line-height: 1.55;
  margin-bottom: 0;
}

/* ── 13. Programmes Section ─────────────────────────────────── */
.programmes-section {
  background: var(--navy);
  background-image:
    radial-gradient(circle at 80% 20%, rgba(201,162,39,.1) 0%, transparent 50%),
    radial-gradient(circle at 20% 80%, rgba(27,94,32,.25) 0%, transparent 50%);
}

/* Tabs */
.programme-tabs {
  display: flex;
  gap: var(--sp-3);
  justify-content: center;
  margin-bottom: var(--sp-10);
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0.65em 1.6em;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255,255,255,.7);
  background: rgba(255,255,255,.08);
  border: 2px solid rgba(255,255,255,.2);
  border-radius: var(--r-full);
  cursor: pointer;
  transition: all var(--t-base);
}

.tab-btn:hover {
  color: var(--white);
  background: rgba(255,255,255,.15);
  border-color: rgba(255,255,255,.4);
}

.tab-btn--active {
  color: var(--navy);
  background: var(--gold);
  border-color: var(--gold);
}

/* Programme card (UG) */
.programme-card {
  background: var(--white);
  border-radius: var(--r-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.programme-card__header {
  background: linear-gradient(135deg, var(--navy-mid), var(--navy));
  padding: var(--sp-8) var(--sp-10);
  display: flex;
  align-items: flex-start;
  gap: var(--sp-6);
  color: var(--white);
}

.programme-degree-badge {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--gold);
  background: rgba(201,162,39,.15);
  border: 2px solid rgba(201,162,39,.4);
  width: 80px;
  height: 80px;
  border-radius: var(--r-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.programme-title {
  font-size: 1.5rem;
  color: var(--white);
  margin-bottom: var(--sp-3);
}

.programme-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  font-size: 0.85rem;
  color: rgba(255,255,255,.75);
}

.programme-meta span {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.programme-card__body {
  padding: var(--sp-8) var(--sp-10);
}

.programme-description {
  font-size: 1.05rem;
  color: var(--gray-600);
  margin-bottom: var(--sp-8);
  line-height: 1.75;
}

.programme-details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.programme-detail h4 {
  font-size: 0.9rem;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.programme-detail h4 i {
  color: var(--gold-dark);
}

.programme-list {
  list-style: none;
}

.programme-list li {
  padding: var(--sp-1) 0;
  font-size: 0.9rem;
  color: var(--gray-600);
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
}

.programme-list li::before {
  content: '›';
  color: var(--gold-dark);
  font-weight: 700;
  flex-shrink: 0;
}

.req-section {
  margin-bottom: var(--sp-4);
}

.req-section strong {
  display: block;
  font-size: 0.82rem;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: var(--sp-2);
}

/* PG programmes */
.postgrad-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-5);
}

.pg-programme-card {
  background: var(--white);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  border: 2px solid transparent;
  transition: border-color var(--t-base), transform var(--t-base);
}

.pg-programme-card:hover,
.pg-programme-card--featured {
  border-color: var(--gold);
  transform: translateY(-4px);
}

.pg-badge {
  display: inline-block;
  padding: 0.25em 0.9em;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  border-radius: var(--r-md);
  width: fit-content;
}

.pg-badge--gold { background: var(--gold-pale); color: var(--gold-dark); }
.pg-badge--navy { background: var(--navy-pale); color: var(--navy); }
.pg-badge--green { background: var(--green-pale); color: var(--green); }

.pg-programme-card h3 {
  font-size: 1.15rem;
  color: var(--navy);
}

.pg-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  font-size: 0.82rem;
  color: var(--gray-600);
}

.pg-meta span {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}

.pg-programme-card p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.6;
  flex: 1;
  margin-bottom: 0;
}

.pg-entry {
  font-size: 0.83rem;
  color: var(--gray-600);
  background: var(--gray-100);
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  border-left: 3px solid var(--navy-mid);
}

.pg-entry strong {
  color: var(--navy);
}

.specialisations {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

/* Programmes CTA */
.programmes-cta {
  margin-top: var(--sp-10);
  text-align: center;
}

.programmes-cta p {
  color: rgba(255,255,255,.75);
  margin-bottom: var(--sp-4);
  font-size: 0.95rem;
}

/* ── 14. Staff Section ──────────────────────────────────────── */
.staff-section {
  background: var(--off-white);
}

/* HOD feature */
.hod-feature {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--sp-8);
  background: var(--white);
  border-radius: var(--r-xl);
  padding: var(--sp-8) var(--sp-10);
  box-shadow: var(--shadow-lg);
  border-left: 6px solid var(--gold);
  margin-bottom: var(--sp-12);
  align-items: start;
}

.hod-avatar {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.avatar-initials {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--white);
}

.hod-badge {
  display: inline-block;
  padding: 0.2em 0.8em;
  background: var(--gold-pale);
  color: var(--gold-dark);
  border: 1px solid var(--gold);
  border-radius: var(--r-full);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--sp-3);
}

.hod-name {
  font-size: 1.5rem;
  color: var(--navy);
  margin-bottom: var(--sp-1);
}

.hod-title {
  color: var(--green);
  font-weight: 500;
  font-size: 0.95rem;
  margin-bottom: var(--sp-1);
}

.hod-qualifications {
  font-size: 0.83rem;
  color: var(--gray-600);
  margin-bottom: var(--sp-3);
}

.hod-specialisms {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
}

.hod-message {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-style: italic;
  color: var(--gray-600);
  border-left: 3px solid var(--gold);
  padding-left: var(--sp-4);
  line-height: 1.75;
  margin-bottom: 0;
}

/* Staff grid */
.staff-grid-title {
  font-size: 1.2rem;
  color: var(--navy);
  margin-bottom: var(--sp-6);
  text-align: center;
}

.staff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
}

.staff-card {
  background: var(--white);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--sp-4);
  transition: transform var(--t-base), box-shadow var(--t-base);
}

.staff-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.staff-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
}

.staff-avatar .avatar-initials {
  font-size: 1.3rem;
}

.staff-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  width: 100%;
}

.staff-name {
  font-size: 0.98rem;
  color: var(--navy);
  margin-bottom: 0;
}

.staff-rank {
  font-size: 0.8rem;
  color: var(--green);
  font-weight: 600;
  margin-bottom: 0;
}

.staff-quals {
  font-size: 0.75rem;
  color: var(--gray-600);
  margin-bottom: var(--sp-2);
}

.staff-specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1);
  justify-content: center;
}

.staff-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.staff-social {
  display: flex;
  gap: var(--sp-2);
  margin-top: var(--sp-1);
  justify-content: center;
}

.staff-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1rem;
  color: #fff;
  transition: opacity 0.2s, transform 0.2s;
  text-decoration: none;
}

.staff-social-link:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.staff-social-link--linkedin {
  background: #0a66c2;
}

.staff-social-link--scholar {
  background: #4285f4;
}

/* ── 15. Research Section ───────────────────────────────────── */
.research-section {
  background: var(--bg-dark-green);
  background-image:
    radial-gradient(circle at 10% 50%, rgba(201,162,39,.08) 0%, transparent 50%),
    radial-gradient(circle at 90% 20%, rgba(0,32,96,.4) 0%, transparent 50%);
}

.research-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--sp-10);
  align-items: start;
}

.research-areas-title {
  color: var(--gold);
  font-size: 1.2rem;
  margin-bottom: var(--sp-6);
}

.research-area-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-5);
}

.research-area-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  display: flex;
  gap: var(--sp-4);
  transition: background var(--t-base), border-color var(--t-base);
}

.research-area-card:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(201,162,39,.35);
}

.area-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: rgba(201,162,39,.18);
  color: var(--gold);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.area-content h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: var(--sp-2);
}

.area-content p {
  color: rgba(255,255,255,.65);
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 0;
}

/* Journal highlight card */
.journal-card {
  background: rgba(255,255,255,.07);
  border: 2px solid rgba(201,162,39,.4);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  text-align: center;
  position: sticky;
  top: calc(var(--nav-h) + var(--util-h) + var(--sp-4));
}

.journal-logo-area {
  font-size: 3rem;
  color: var(--gold);
  margin-bottom: var(--sp-4);
}

.journal-badge {
  display: inline-block;
  padding: 0.2em 0.8em;
  background: rgba(201,162,39,.2);
  color: var(--gold);
  border: 1px solid rgba(201,162,39,.5);
  border-radius: var(--r-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--sp-4);
}

.journal-title {
  color: var(--white);
  font-size: 1.25rem;
  margin-bottom: var(--sp-1);
  line-height: 1.3;
}

.journal-acronym {
  color: var(--gold);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--sp-4);
}

.journal-description {
  color: rgba(255,255,255,.7);
  font-size: 0.87rem;
  line-height: 1.65;
  margin-bottom: var(--sp-5);
}

.journal-details {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-bottom: var(--sp-6);
  text-align: left;
}

.journal-detail {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: 0.85rem;
  color: rgba(255,255,255,.75);
}

.journal-detail i {
  color: var(--green-mid);
  flex-shrink: 0;
}

/* ── 16. News & Events ──────────────────────────────────────── */
.news-section {
  background: var(--off-white);
}

.news-events-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-10);
}

.column-title {
  font-size: 1.2rem;
  color: var(--navy);
  margin-bottom: var(--sp-6);
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding-bottom: var(--sp-3);
  border-bottom: 2px solid var(--gold);
}

.column-title i {
  color: var(--gold-dark);
}

/* News card */
.news-card {
  display: flex;
  gap: var(--sp-5);
  background: var(--white);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  margin-bottom: var(--sp-4);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-base);
}

.news-card:last-child { margin-bottom: 0; }

.news-card:hover {
  box-shadow: var(--shadow-md);
}

.news-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--navy);
  color: var(--white);
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  min-width: 56px;
  text-align: center;
  flex-shrink: 0;
}

.date-day {
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-serif);
  line-height: 1;
}

.date-month {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--gold);
}

.date-year {
  font-size: 0.68rem;
  color: rgba(255,255,255,.6);
  margin-top: var(--sp-1);
}

.news-content { flex: 1; }

.news-tag {
  display: inline-block;
  padding: 0.15em 0.6em;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-radius: var(--r-full);
  background: var(--navy-pale);
  color: var(--navy);
  margin-bottom: var(--sp-2);
}

.news-tag--gold { background: var(--gold-pale); color: var(--gold-dark); }
.news-tag--green { background: var(--green-pale); color: var(--green); }

.news-content h4 {
  font-size: 0.95rem;
  color: var(--navy);
  margin-bottom: var(--sp-2);
  line-height: 1.3;
}

.news-content p {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: var(--sp-3);
}

.read-more-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--navy-mid);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  transition: gap var(--t-fast), color var(--t-fast);
}

.read-more-link:hover {
  color: var(--green);
  gap: var(--sp-2);
}

/* Event card */
.event-card {
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--white);
  border-radius: var(--r-lg);
  margin-bottom: var(--sp-4);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--t-base);
}

.event-card:last-of-type { margin-bottom: 0; }

.event-card:hover {
  box-shadow: var(--shadow-md);
}

.event-date-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--green);
  color: var(--white);
  border-radius: var(--r-md);
  padding: var(--sp-3) var(--sp-4);
  min-width: 52px;
  text-align: center;
  flex-shrink: 0;
}

.event-day {
  font-size: 1.4rem;
  font-weight: 700;
  font-family: var(--font-serif);
  line-height: 1;
}

.event-month {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255,255,255,.8);
  margin-top: var(--sp-1);
}

.event-content { flex: 1; }

.event-type {
  display: inline-block;
  padding: 0.15em 0.6em;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  border-radius: var(--r-full);
  background: var(--navy-pale);
  color: var(--navy);
  margin-bottom: var(--sp-2);
}

.event-type--green { background: var(--green-pale); color: var(--green); }
.event-type--gold  { background: var(--gold-pale);  color: var(--gold-dark); }

.event-title {
  font-size: 0.92rem;
  color: var(--navy);
  margin-bottom: var(--sp-2);
  line-height: 1.3;
}

.event-details {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  font-size: 0.78rem;
  color: var(--gray-600);
  margin-bottom: var(--sp-2);
}

.event-details span {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.event-details i { color: var(--gold-dark); }

.event-speaker {
  font-size: 0.8rem;
  color: var(--gray-600);
  margin-bottom: 0;
}

.university-events-link {
  margin-top: var(--sp-5);
  padding-top: var(--sp-5);
  border-top: 1px dashed var(--gray-200);
  text-align: right;
}

.university-events-link p {
  font-size: 0.83rem;
  color: var(--gray-600);
  margin-bottom: var(--sp-3);
}

/* ── 17. Contact Section ────────────────────────────────────── */
.contact-section {
  background: var(--navy);
  background-image:
    radial-gradient(circle at 20% 50%, rgba(27,94,32,.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(201,162,39,.08) 0%, transparent 50%);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: start;
}

.contact-info-title,
.contact-form-title {
  color: var(--white);
  font-size: 1.3rem;
  margin-bottom: var(--sp-6);
}

.contact-item {
  display: flex;
  gap: var(--sp-4);
  margin-bottom: var(--sp-5);
  align-items: flex-start;
}

.contact-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(201,162,39,.2);
  color: var(--gold);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: var(--sp-1);
}

.contact-detail strong {
  display: block;
  color: var(--white);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  margin-bottom: var(--sp-1);
}

.contact-detail address,
.contact-detail p {
  color: rgba(255,255,255,.7);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 0;
}

.contact-link {
  color: rgba(255,255,255,.8);
  font-size: 0.9rem;
  transition: color var(--t-fast);
}

.contact-link:hover { color: var(--gold); }

.quick-links-box {
  margin-top: var(--sp-6);
  padding: var(--sp-5);
  background: rgba(255,255,255,.07);
  border-radius: var(--r-lg);
  border: 1px solid rgba(255,255,255,.12);
}

.quick-links-box h4 {
  color: var(--gold);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: var(--sp-3);
}

.quick-link {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  color: rgba(255,255,255,.75);
  text-decoration: none;
  font-size: 0.9rem;
  padding: var(--sp-2) 0;
  border-bottom: 1px solid rgba(255,255,255,.08);
  transition: color var(--t-fast);
}

.quick-link:last-child { border-bottom: none; }
.quick-link:hover { color: var(--gold); }
.quick-link i { color: var(--gold-dark); flex-shrink: 0; }

/* Contact form */
.contact-form-wrapper {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.form-group {
  margin-bottom: var(--sp-5);
}

.form-group--checkbox {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: flex-start;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255,255,255,.85);
  margin-bottom: var(--sp-2);
}

.form-input {
  width: 100%;
  padding: 0.6em 0.9em;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--gray-800);
  background: rgba(255,255,255,.92);
  border: 2px solid rgba(255,255,255,.25);
  border-radius: var(--r-md);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  appearance: none;
}

.form-input:focus {
  border-color: var(--gold);
  outline: none;
  box-shadow: 0 0 0 3px rgba(201,162,39,.25);
}

.form-input[aria-invalid="true"] {
  border-color: #EF5350;
  box-shadow: 0 0 0 3px rgba(239,83,80,.2);
}

.form-textarea {
  resize: vertical;
  min-height: 130px;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M6 8L0 0h12z' fill='%23424242'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1em center;
  padding-right: 2.5em;
  cursor: pointer;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--gold);
}

.form-checkbox-label {
  font-size: 0.83rem;
  color: rgba(255,255,255,.75);
  flex: 1;
  cursor: pointer;
}

.form-error {
  display: block;
  font-size: 0.8rem;
  color: #EF9A9A;
  margin-top: var(--sp-1);
  min-height: 1em;
}

.form-hint {
  display: block;
  font-size: 0.78rem;
  color: rgba(255,255,255,.5);
  margin-top: var(--sp-1);
}

.form-success {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  background: rgba(46,125,50,.25);
  border: 1px solid var(--green-mid);
  border-radius: var(--r-md);
  padding: var(--sp-4);
  margin-bottom: var(--sp-4);
  color: #A5D6A7;
  font-size: 0.9rem;
}

.form-success i { font-size: 1.2rem; }

/* ── 18. Footer ─────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-dark-navy);
}

.footer-top {
  padding-block: var(--sp-12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-8);
}

.footer-col--brand {
  display: flex;
  gap: var(--sp-4);
  align-items: flex-start;
}

.footer-logo {
  width: 60px;
  height: auto;
  flex-shrink: 0;
  filter: brightness(1);
}

.footer-dept-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: var(--sp-1);
  line-height: 1.2;
}

.footer-faculty {
  font-size: 0.82rem;
  color: rgba(255,255,255,.6);
  line-height: 1.5;
  margin-bottom: var(--sp-2);
}

.footer-address {
  font-size: 0.8rem;
  color: rgba(255,255,255,.5);
  line-height: 1.5;
  margin-bottom: 0;
}

.footer-col-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--gold);
  margin-bottom: var(--sp-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.footer-link {
  font-size: 0.87rem;
  color: rgba(255,255,255,.65);
  text-decoration: none;
  transition: color var(--t-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
}

.footer-link:hover { color: var(--gold); }

.footer-link--external i {
  font-size: 0.75rem;
  color: var(--gold-dark);
}

.footer-contact {
  margin-top: var(--sp-6);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-block: var(--sp-5);
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
  flex-wrap: wrap;
}

.copyright {
  font-size: 0.82rem;
  color: rgba(255,255,255,.5);
  margin-bottom: 0;
}

.footer-accessibility {
  font-size: 0.78rem;
  color: rgba(255,255,255,.4);
  margin-bottom: 0;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

/* ── 19. Back to Top ────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: var(--sp-6);
  right: var(--sp-6);
  z-index: 500;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  border: 2px solid var(--gold);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: background var(--t-base), transform var(--t-fast);
}

.back-to-top:hover {
  background: var(--gold);
  color: var(--navy);
  transform: translateY(-3px);
}

.back-to-top[hidden] { display: none; }

/* ── Avatar colour modifiers ───────────────────────────────── */
.avatar--navy     { background: var(--navy); }
.avatar--navy-mid { background: var(--navy-mid); }
.avatar--green    { background: var(--green); }
.avatar--green-mid{ background: var(--green-mid); }
.avatar--gold-dark{ background: var(--gold-dark); }

/* Footer contact sub-heading spacing */
.footer-contact-title { margin-top: 1.5rem; }

/* ── 20. Scroll Animations ──────────────────────────────────── */
@media (prefers-reduced-motion: no-preference) {
  .animate-ready {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
  }

  .animate-in {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Staggered delay for grids */
.staff-grid .staff-card:nth-child(2)  { transition-delay: 60ms; }
.staff-grid .staff-card:nth-child(3)  { transition-delay: 120ms; }
.staff-grid .staff-card:nth-child(4)  { transition-delay: 180ms; }
.staff-grid .staff-card:nth-child(5)  { transition-delay: 240ms; }
.staff-grid .staff-card:nth-child(6)  { transition-delay: 300ms; }
.staff-grid .staff-card:nth-child(7)  { transition-delay: 360ms; }
.staff-grid .staff-card:nth-child(8)  { transition-delay: 420ms; }
.values-grid .value-item:nth-child(2) { transition-delay: 80ms; }
.values-grid .value-item:nth-child(3) { transition-delay: 160ms; }
.values-grid .value-item:nth-child(4) { transition-delay: 240ms; }
.values-grid .value-item:nth-child(5) { transition-delay: 320ms; }
.values-grid .value-item:nth-child(6) { transition-delay: 400ms; }

/* ── 21. Responsive – Tablets (max 1024px) ──────────────────── */
@media (max-width: 1024px) {
  .about-intro-grid  { grid-template-columns: 1fr; gap: var(--sp-8); }
  .values-grid       { grid-template-columns: repeat(2, 1fr); }
  .programme-details-grid { grid-template-columns: 1fr 1fr; }
  .postgrad-grid     { grid-template-columns: 1fr 1fr; }
  .staff-grid        { grid-template-columns: repeat(2, 1fr); }
  .research-layout   { grid-template-columns: 1fr; }
  .journal-card      { position: static; }
  .footer-grid       { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  .footer-col--brand { grid-column: span 2; }
  .stats-grid        { grid-template-columns: repeat(3, 1fr); }
  .stat-item:nth-child(4) { border-left: none; }
}

/* ── 22. Responsive – Large Phones (max 768px) ──────────────── */
@media (max-width: 768px) {
  :root {
    --nav-h: 64px;
    --util-h: 0px; /* hide utility bar text on mobile */
  }

  .utility-bar__left { display: none; }
  .utility-bar__right { gap: var(--sp-4); }

  /* Nav toggle visible */
  .nav-toggle { display: flex; }

  .primary-nav {
    position: absolute;
    top: calc(var(--util-h) + var(--nav-h));
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 3px solid var(--navy);
    box-shadow: var(--shadow-lg);
    padding: var(--sp-4) var(--sp-6);
    display: none;
    z-index: 180;
  }

  .primary-nav.is-open { display: block; }

  .primary-nav .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: var(--sp-3) var(--sp-4);
    border-bottom: 1px solid var(--gray-200);
    border-radius: 0;
  }

  .nav-link.is-active { border-bottom: 1px solid var(--gray-200); }
  .nav-link:last-child { border-bottom: none; }

  /* Hero */
  .hero .container {
    grid-template-columns: 1fr;
  }

  .hero-crest { display: none; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-scroll-indicator { display: none; }

  /* Stats */
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item + .stat-item { border-left: none; }
  .stat-item:nth-child(odd) + .stat-item { border-left: 1px solid rgba(201,162,39,.35); }
  .stat-item:nth-child(5) { grid-column: span 2; border-left: none; }

  /* Programmes */
  .programme-card__header { flex-direction: column; gap: var(--sp-4); }
  .programme-details-grid { grid-template-columns: 1fr; }
  .postgrad-grid { grid-template-columns: 1fr; }
  .programme-tabs { flex-wrap: wrap; }

  /* Staff */
  .hod-feature {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hod-avatar { margin: 0 auto; }
  .hod-specialisms { justify-content: center; }
  .staff-grid { grid-template-columns: repeat(2, 1fr); }

  /* Research */
  .research-area-grid { grid-template-columns: 1fr; }

  /* News */
  .news-events-grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; }
  .footer-col--brand { grid-column: span 1; }
  .footer-bottom-content { flex-direction: column; text-align: center; }
}

/* ── 23. Responsive – Small Phones (max 480px) ──────────────── */
@media (max-width: 480px) {
  .hero-heading { font-size: 2rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .staff-grid { grid-template-columns: 1fr; }
  .container { padding-inline: var(--sp-4); }
  .programme-card__body { padding: var(--sp-5); }
  .programme-card__header { padding: var(--sp-5); }
  .contact-form-wrapper { padding: var(--sp-5); }
}

/* ── 24. Print Styles ───────────────────────────────────────── */
@media print {
  .utility-bar,
  .site-header,
  .nav-toggle,
  .back-to-top,
  .hero-scroll-indicator,
  .hero-actions,
  .contact-form-wrapper,
  .btn {
    display: none !important;
  }

  body { font-size: 12pt; color: #000; }

  .hero {
    min-height: unset;
    background: none;
    color: #000;
    padding: 2rem 0;
    border-bottom: 2pt solid #000;
  }

  .hero-heading, .hero-tagline, .hero-motto { color: #000; }

  h1, h2, h3, h4 { color: #000 !important; }
  .section { padding-block: 1.5rem; }
  a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; }
}