/* ============================================================
   Dr. Honey Yadav — Academic Portfolio
   css/style.css — Main Styles
   ============================================================ */

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --primary:     #1E3A5F;
  --accent:      #C9963A;
  --bg:          #F8FAFC;
  --card:        #FFFFFF;
  --text:        #475569;
  --heading:     #0F172A;
  --border:      #E2E8F0;
  --primary-dark:#152B47;
  --accent-light:#FDF6EC;
  --shadow-sm:   0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:   0 4px 16px rgba(30,58,95,.10);
  --shadow-lg:   0 8px 32px rgba(30,58,95,.14);
  --radius:      12px;
  --radius-sm:   8px;
  --transition:  .25s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; font-size: 18px; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

/* ── Typography ────────────────────────────────────────────── */
h1 { font-size: 3.33rem; font-weight: 700; color: var(--heading); line-height: 1.15; letter-spacing: -.03em; }
h2 { font-size: 2.22rem; font-weight: 700; color: var(--heading); line-height: 1.2;  letter-spacing: -.02em; }
h3 { font-size: 1.56rem; font-weight: 600; color: var(--heading); line-height: 1.3;  }
h4 { font-size: 1.11rem; font-weight: 600; color: var(--heading); }
p  { font-size: 1rem;    font-weight: 400; color: var(--text);    line-height: 1.75; }
small, .caption { font-size: .78rem; }

/* ── Utility ───────────────────────────────────────────────── */
.section-label {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--accent-light);
  border: 1px solid #E2E8F0;
  border-radius: 100px;
  padding: .25rem .85rem;
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: .6rem;
}

.section-sub {
  max-width: 560px;
  color: var(--text);
  font-size: .95rem;
}

.section-header { margin-bottom: 3rem; }

.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: .9rem;
  padding: .72rem 1.6rem;
  border-radius: 100px;
  border: 2px solid transparent;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.btn-primary-custom:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: transparent;
  color: var(--primary);
  font-weight: 600;
  font-size: .9rem;
  padding: .7rem 1.6rem;
  border-radius: 100px;
  border: 2px solid var(--primary);
  transition: all var(--transition);
  cursor: pointer;
}
.btn-outline-custom:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-ghost-custom {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  background: rgba(255,255,255,.15);
  color: #fff;
  font-weight: 600;
  font-size: .9rem;
  padding: .7rem 1.6rem;
  border-radius: 100px;
  border: 2px solid rgba(255,255,255,.4);
  transition: all var(--transition);
  cursor: pointer;
  backdrop-filter: blur(4px);
}
.btn-ghost-custom:hover {
  background: rgba(255,255,255,.28);
  color: #fff;
  transform: translateY(-2px);
}

/* ── Navigation ────────────────────────────────────────────── */
#mainNav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(248,250,252,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
  padding: 0;
}

#mainNav.scrolled {
  border-color: var(--border);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav-brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--heading);
  white-space: nowrap;
}
.nav-brand span { color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: .1rem;
  list-style: none;
}

.nav-links a {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text);
  padding: .45rem .75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--primary); background: var(--accent-light); }

.nav-links .nav-cv {
  background: var(--primary);
  color: #fff;
  padding: .42rem 1.1rem;
  border-radius: 100px;
  font-size: .82rem;
  font-weight: 600;
  margin-left: .5rem;
}
.nav-links .nav-cv:hover { background: var(--primary-dark); color: #fff; }

.nav-socials {
  display: flex;
  align-items: center;
  gap: .2rem;
}

.nav-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  transition: color var(--transition), background var(--transition);
}
.nav-socials a:hover { color: var(--primary); background: var(--accent-light); }

.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 .75rem;
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: .3rem;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--heading);
  border-radius: 2px;
  transition: all var(--transition);
}

/* Mobile nav drawer */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--card);
  border-top: 1px solid var(--border);
  padding: 1rem 2rem 1.5rem;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: .6rem 0;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.nav-mobile a:last-child { border-bottom: none; }
.nav-mobile a:hover { color: var(--primary); }

/* ── Hero ──────────────────────────────────────────────────── */
#hero {
  background: linear-gradient(135deg, #EFF6FF 0%, #F0F9FF 50%, #F8FAFC 100%);
  position: relative;
  overflow: hidden;
  padding: 7rem 0 6rem;
  min-height: 90vh;
  display: flex;
  align-items: center;
}

/* Floating geometric shapes */
.hero-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  opacity: .06;
}

.hero-shape-1 {
  width: 480px; height: 480px;
  background: var(--primary);
  top: -120px; right: -80px;
}
.hero-shape-2 {
  width: 280px; height: 280px;
  background: var(--accent);
  bottom: 80px; right: 280px;
  opacity: .08;
}
.hero-shape-3 {
  width: 180px; height: 180px;
  background: var(--primary);
  top: 200px; left: -60px;
  opacity: .05;
}

/* Diagonal grid overlay */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,.03) 1px, transparent 1px);
  background-size: 48px 48px;
}

.hero-content { position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(37,99,235,.08);
  border: 1px solid rgba(37,99,235,.18);
  border-radius: 100px;
  padding: .3rem 1rem;
  margin-bottom: 1.5rem;
}
.hero-eyebrow .dot {
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .5; transform: scale(.85); }
}

.hero-name { margin-bottom: .3rem; }
.hero-name .first { color: var(--heading); }
.hero-name .last  { color: var(--primary); }

.hero-role {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--primary);
  margin-bottom: .2rem;
}

.hero-affiliation {
  font-size: .95rem;
  color: var(--text);
  margin-bottom: .15rem;
}

.hero-project {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  font-weight: 600;
  color: #0369A1;
  background: #E0F2FE;
  border-radius: 100px;
  padding: .2rem .9rem;
  margin: .6rem 0 1.4rem;
}

.hero-statement {
  font-size: 1.05rem;
  max-width: 520px;
  color: var(--text);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 2.5rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .75rem;
  font-weight: 500;
  color: var(--text);
  background: rgba(255,255,255,.7);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: .3rem .85rem;
  backdrop-filter: blur(4px);
}
.hero-badge i { color: var(--primary); font-size: .8rem; }

/* Portrait */
.hero-portrait-wrap {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-portrait-ring {
  position: relative;
  display: inline-block;
}

.hero-portrait-ring::before {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 2px dashed rgba(37,99,235,.2);
  animation: spin 30s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hero-portrait-ring::after {
  content: '';
  position: absolute;
  inset: -28px;
  border-radius: 50%;
  border: 1px solid rgba(56,189,248,.15);
  animation: spin 50s linear infinite reverse;
}

.hero-portrait {
  width: 340px;
  height: 340px;
  border-radius: 50%;
  object-fit: cover;
  border: 5px solid #fff;
  box-shadow: var(--shadow-lg), 0 0 0 12px rgba(37,99,235,.05);
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, #DBEAFE 0%, #BAE6FD 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-portrait-placeholder {
  width: 340px;
  height: 340px;
  border-radius: 50%;
  border: 5px solid #fff;
  box-shadow: var(--shadow-lg), 0 0 0 12px rgba(37,99,235,.05);
  position: relative;
  z-index: 1;
  background: linear-gradient(135deg, #DBEAFE 0%, #BAE6FD 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  color: var(--primary);
}
.hero-portrait-placeholder i { font-size: 5rem; opacity: .5; }
.hero-portrait-placeholder span { font-size: .78rem; font-weight: 600; opacity: .6; letter-spacing: .05em; }

/* Floating credential chips */
.hero-chip {
  position: absolute;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  padding: .35rem .65rem;
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .65rem;
  font-weight: 600;
  color: var(--heading);
  white-space: nowrap;
  z-index: 2;
}
.hero-chip i { color: var(--primary); font-size: .9rem; }
.chip-iit  { top: -8%;   left: 50%; transform: translateX(-50%); }
.chip-bcu  { display: none; }
.chip-ukri { top: 50%;  right: -30%; transform: translateY(-50%); }
.chip-gtv  { bottom: -8%; left: 50%; transform: translateX(-50%); }
.chip-iim  { top: 50%;  left: -32%; transform: translateY(-50%); }

@media (max-width: 992px) {
  .chip-iit,
  .chip-bcu,
  .chip-ukri,
  .chip-gtv,
  .chip-iim { display: none !important; }
}
/* ── Stats ─────────────────────────────────────────────────── */
#stats {
  padding: 5rem 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: #BFDBFE;
}
.stat-card:hover::before { opacity: 1; }

.stat-icon {
  width: 52px; height: 52px;
  background: var(--accent-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.4rem;
  color: var(--primary);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--heading);
  letter-spacing: -.03em;
  line-height: 1;
  margin-bottom: .35rem;
}
.stat-number .plus { color: var(--primary); }

.stat-label {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.4;
}

/* ── About ─────────────────────────────────────────────────── */
#about {
  padding: 6rem 0;
  background: var(--bg);
}

.about-img-wrap {
  position: relative;
}

.about-img-bg {
  position: absolute;
  inset: -18px;
  border-radius: var(--radius);
  border: 2px solid var(--border);
  background: linear-gradient(135deg, #EFF6FF, #F0F9FF);
  z-index: 0;
}

.about-img {
  position: relative;
  z-index: 1;
  border-radius: var(--radius);
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
  background: linear-gradient(135deg, #DBEAFE, #BAE6FD);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 5rem;
  box-shadow: var(--shadow-md);
}

.about-credential {
  position: absolute;
  bottom: -20px;
  right: -20px;
  z-index: 2;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  box-shadow: var(--shadow-md);
  max-width: 200px;
}
.about-credential .cred-icon {
  font-size: 1.4rem;
  color: var(--primary);
  margin-bottom: .3rem;
}
.about-credential .cred-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--primary);
}
.about-credential .cred-value {
  font-size: .82rem;
  font-weight: 600;
  color: var(--heading);
  line-height: 1.3;
}

.about-text p {
  margin-bottom: 1.1rem;
}

.about-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin: 1.5rem 0 2rem;
}

.about-tag {
  font-size: .75rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--accent-light);
  border: 1px solid #BFDBFE;
  border-radius: 100px;
  padding: .25rem .8rem;
}

/* ── Expertise ─────────────────────────────────────────────── */
#expertise {
  padding: 6rem 0;
  background: var(--card);
  border-top: 1px solid var(--border);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.expertise-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.expertise-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: #BFDBFE;
}

.expertise-icon {
  width: 56px; height: 56px;
  background: var(--accent-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--primary);
  margin-bottom: 1.2rem;
  transition: background var(--transition), color var(--transition);
}

.expertise-card:hover .expertise-icon {
  background: var(--primary);
  color: #fff;
}

.expertise-card h3 {
  font-size: 1.05rem;
  margin-bottom: .5rem;
}
.expertise-card p {
  font-size: .85rem;
  line-height: 1.65;
}

/* ── Featured Research ─────────────────────────────────────── */
#research {
  padding: 6rem 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.research-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  gap: 1.2rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.research-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #BFDBFE;
}

.research-num {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: var(--accent-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  font-weight: 700;
  color: var(--primary);
}

.research-card h3 {
  font-size: 1rem;
  margin-bottom: .4rem;
}
.research-card p { font-size: .85rem; }

.research-tag {
  display: inline-block;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--accent-light);
  border-radius: 100px;
  padding: .15rem .6rem;
  margin-bottom: .5rem;
}

/* ── Projects ──────────────────────────────────────────────── */
#projects {
  padding: 6rem 0;
  background: var(--card);
  border-top: 1px solid var(--border);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}
.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: #BFDBFE;
}

.project-thumb {
  height: 160px;
  background: linear-gradient(135deg, #DBEAFE 0%, #BAE6FD 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--primary);
  position: relative;
  overflow: hidden;
}

.project-thumb-1 { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); }
.project-thumb-2 { background: linear-gradient(135deg, #F0F9FF, #BAE6FD); }
.project-thumb-3 { background: linear-gradient(135deg, #F0FDF4, #DCFCE7); }
.project-thumb-3 i { color: #16A34A; }

.project-status {
  position: absolute;
  top: .8rem;
  right: .8rem;
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: .2rem .6rem;
  border-radius: 100px;
}
.status-active { background: #DCFCE7; color: #15803D; }
.status-ongoing { background: #FEF3C7; color: #92400E; }

.project-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-funder {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: .4rem;
}

.project-body h3 {
  font-size: 1rem;
  margin-bottom: .6rem;
}
.project-body p {
  font-size: .85rem;
  flex: 1;
  margin-bottom: 1.2rem;
}

.project-body a {
  font-size: .82rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: .3rem;
}
.project-body a:hover { gap: .55rem; }

/* ── Publications ──────────────────────────────────────────── */
#publications {
  padding: 6rem 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.pub-grid {
  display: grid;
  gap: 1.25rem;
}

.pub-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.pub-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.pub-type {
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: .5rem;
}

.pub-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--heading);
  margin-bottom: .4rem;
  line-height: 1.5;
}

.pub-authors {
  font-size: .82rem;
  color: var(--text);
  margin-bottom: .3rem;
}

.pub-meta {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .78rem;
  color: var(--text);
  font-style: italic;
  margin-bottom: 1rem;
}

.pub-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.pub-btn {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  font-size: .72rem;
  font-weight: 600;
  padding: .28rem .75rem;
  border-radius: 100px;
  border: 1.5px solid var(--border);
  color: var(--text);
  transition: all var(--transition);
}
.pub-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--accent-light);
}
.pub-btn.doi { border-color: var(--primary); color: var(--primary); }

/* ── Research Impact ───────────────────────────────────────── */
#impact {
  padding: 6rem 0;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  position: relative;
  overflow: hidden;
}

.impact-bg-shape {
  position: absolute;
  border-radius: 50%;
  background: var(--primary);
  opacity: .06;
}
.impact-bg-shape-1 { width: 600px; height: 600px; top: -200px; right: -100px; }
.impact-bg-shape-2 { width: 300px; height: 300px; bottom: -100px; left: 50px; }

#impact .section-label {
  background: rgba(37,99,235,.2);
  border-color: rgba(37,99,235,.4);
  color: var(--accent);
}
#impact h2 { color: #fff; }
#impact p  { color: #94A3B8; }

.impact-text {
  max-width: 600px;
}
.impact-text p {
  font-size: 1.1rem;
  line-height: 1.85;
  color: #CBD5E1;
}

.impact-sectors {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.8rem;
}

.impact-sector {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  font-weight: 600;
  color: #fff;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 100px;
  padding: .3rem .9rem;
}
.impact-sector i { color: var(--accent); font-size: .7rem; }

.impact-keywords {
  position: relative;
  z-index: 1;
}

.impact-kw-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.impact-kw-card i {
  font-size: 1.4rem;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: .1rem;
}
.impact-kw-card h4 { color: #fff; margin-bottom: .2rem; font-size: .95rem; }
.impact-kw-card p  { font-size: .82rem; color: #94A3B8; margin: 0; }

/* ── Collaboration CTA ─────────────────────────────────────── */
#collaborate {
  padding: 6rem 0;
  background: linear-gradient(135deg, #1D4ED8 0%, #2563EB 60%, #0369A1 100%);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.collab-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

.collab-content { position: relative; z-index: 1; }

#collaborate h2 { color: #fff; margin-bottom: 1rem; }
#collaborate p  { color: rgba(255,255,255,.8); max-width: 560px; margin: 0 auto 2rem; font-size: 1.05rem; }

.collab-types {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .6rem;
  margin-bottom: 2.5rem;
}

.collab-type {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .78rem;
  font-weight: 600;
  color: rgba(255,255,255,.9);
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 100px;
  padding: .3rem .9rem;
}

.collab-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── Footer ────────────────────────────────────────────────── */
#footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255,255,255,.06);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: .5rem;
}
.footer-brand span { color: var(--accent); }

.footer-tagline {
  font-size: .82rem;
  line-height: 1.6;
  margin-bottom: 1.2rem;
  max-width: 280px;
}

.footer-social-links {
  display: flex;
  gap: .5rem;
}
.footer-social-links a {
  width: 38px; height: 38px;
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94A3B8;
  font-size: 1rem;
  transition: all var(--transition);
}
.footer-social-links a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.footer-col-title {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 1.2rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.footer-links a {
  font-size: .85rem;
  color: #94A3B8;
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--accent); }

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  font-size: .82rem;
  color: #94A3B8;
  margin-bottom: .6rem;
}
.footer-contact-item i { color: var(--accent); margin-top: .15rem; flex-shrink: 0; }
.footer-contact-item a { color: #94A3B8; }
.footer-contact-item a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: .78rem;
  color: #64748B;
}

.footer-bottom a { color: #64748B; }
.footer-bottom a:hover { color: var(--accent); }

/* ── AOS overrides ─────────────────────────────────────────── */
[data-aos] { will-change: transform, opacity; }