/* SHPE Indiana University — Stylesheet */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

:root {
  --blue-900: #0d1f3c;
  --blue-800: #1e3c72;
  --blue-700: #2d5aa0;
  --blue-100: #e8edf5;
  --orange-500: #f05a28;
  --orange-400: #ff7043;
  --orange-glow: rgba(240, 90, 40, 0.35);
  --neutral-50:  #f8f9fa;
  --neutral-200: #e2e8f0;
  --neutral-400: #94a3b8;
  --neutral-600: #475569;
  --neutral-900: #0f172a;
  --white: #ffffff;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow:     0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.06);
  --shadow-lg:  0 16px 48px rgba(0,0,0,.14), 0 4px 16px rgba(0,0,0,.08);
  --shadow-xl:  0 24px 64px rgba(0,0,0,.18);

  --radius-sm: 8px;
  --radius:    16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--neutral-900);
  background: var(--white);
  overflow-x: hidden;
}

img, svg { display: block; }

a {
  color: inherit;
  text-decoration: none;
}

/* ─── Layout ──────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
  position: relative;
}

/* ─── Typography helpers ──────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--blue-800);
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 4px;
  background: linear-gradient(90deg, var(--orange-500), var(--orange-400));
  border-radius: 2px;
}

.section-subtitle {
  margin-top: 1.25rem;
  font-size: 1.1rem;
  color: var(--neutral-600);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.section-cta {
  text-align: center;
  margin-top: 3.5rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--orange-500);
  font-weight: 600;
  font-size: 0.95rem;
  transition: gap var(--transition);
}

.text-link:hover { gap: 0.6rem; }

/* ─── Buttons ─────────────────────────────────────────────── */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: linear-gradient(135deg, var(--orange-500), var(--orange-400));
  color: var(--white);
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 1rem;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px var(--orange-glow);
  white-space: nowrap;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--orange-glow);
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  color: var(--white);
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 24px;
  border-radius: 50px;
  border: 2px solid rgba(255,255,255,0.4);
  transition: background var(--transition), border-color var(--transition);
}

.cta-secondary:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.7);
}

.cta-secondary--outline {
  color: var(--blue-800);
  border-color: var(--blue-800);
}

.cta-secondary--outline:hover {
  background: var(--blue-800);
  color: var(--white);
}

/* ─── Header / Nav ────────────────────────────────────────── */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 31, 60, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 0.9rem 0;
  transition: background var(--transition), box-shadow var(--transition);
}

header.scrolled {
  background: rgba(13, 31, 60, 0.97);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-shpe {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--white) 30%, var(--orange-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.logo-chapter {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
}

/* Nav links */
.nav-links {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  color: rgba(255,255,255,0.85);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-links a:hover {
  color: var(--white);
  background: rgba(255,255,255,0.08);
}

.nav-links .nav-cta {
  margin-left: 0.5rem;
  background: linear-gradient(135deg, var(--orange-500), var(--orange-400));
  color: var(--white);
  padding: 0.5rem 1.1rem;
  border-radius: 50px;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-links .nav-cta:hover {
  background: linear-gradient(135deg, var(--orange-500), var(--orange-400));
  transform: translateY(-1px);
  box-shadow: 0 4px 16px var(--orange-glow);
}

/* Mobile menu button */
.mobile-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  cursor: pointer;
  background: none;
  border: none;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  flex-shrink: 0;
}

.mobile-menu:hover { background: rgba(255,255,255,0.1); }

.mobile-menu span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
  transform-origin: center;
}

/* Hamburger → X animation */
.mobile-menu.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mobile-menu.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Hero ────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  color: var(--white);
  text-align: center;
  overflow: hidden;
  padding-top: 80px;
}

/* Dark navy base + subtle colored radial accents */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 60% at 20% 30%, rgba(45, 90, 160, 0.5) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 80% 70%, rgba(240, 90, 40, 0.25) 0%, transparent 65%),
    linear-gradient(170deg, var(--blue-900) 0%, #152d58 60%, #0d1f3c 100%);
  z-index: 0;
}

/* Subtle grid overlay */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridDrift 30s ease-in-out infinite;
}

@keyframes gridDrift {
  0%, 100% { transform: translate(0, 0); }
  50%       { transform: translate(10px, -8px); }
}

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

.hero-eyebrow {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50px;
  padding: 0.35rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.7s ease-out both;
}

.hero-content h1 {
  font-size: clamp(2.75rem, 6vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.7s ease-out 0.1s both;
}

.hero-content p {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.8);
  max-width: 580px;
  margin: 0 auto 2.5rem;
  animation: fadeInUp 0.7s ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  animation: fadeInUp 0.7s ease-out 0.3s both;
}

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
}

.hero-scroll-hint span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 12px;
  position: relative;
}

.hero-scroll-hint span::before {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.6);
  border-radius: 2px;
  animation: scrollDot 1.8s ease-in-out infinite;
}

@keyframes scrollDot {
  0%   { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(14px); }
}

/* ─── About ───────────────────────────────────────────────── */
.about { background: var(--neutral-50); }

.about::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-800), var(--orange-500), var(--blue-800));
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--neutral-600);
}

.about-text p { margin-bottom: 1.25rem; }

/* Stats card */
.stats {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--neutral-200);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.stat-item {
  text-align: center;
  padding: 1.25rem 1rem;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}

.stat-item:hover {
  background: var(--neutral-50);
  transform: translateY(-4px);
}

.stat-row {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.1rem;
}

.stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue-800), var(--orange-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-suffix {
  font-size: 1.75rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--blue-800), var(--orange-500));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--neutral-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ─── Programs ────────────────────────────────────────────── */
.programs { background: var(--white); }

.programs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.program-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.program-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange-500), var(--orange-400));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.program-card:hover::after { transform: scaleX(1); }

.program-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.program-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--blue-800), var(--blue-700));
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--white);
  transition: background var(--transition), transform var(--transition);
}

.program-icon svg {
  width: 28px;
  height: 28px;
}

.program-card:hover .program-icon {
  background: linear-gradient(135deg, var(--orange-500), var(--orange-400));
  transform: scale(1.08) rotate(4deg);
}

.program-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--blue-800);
  margin-bottom: 0.75rem;
}

.program-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--neutral-600);
}

/* ─── Leadership ──────────────────────────────────────────── */
.leadership { background: var(--neutral-50); }

.leadership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

/* leader-card is an <a> tag — reset link styles */
.leader-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
  transition: transform var(--transition), box-shadow var(--transition);
  color: var(--neutral-900);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.leader-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

/* Shimmer on hover */
.leader-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(240,90,40,0.06) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.leader-card:hover::before { transform: translateX(100%); }

.leader-image {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-800), var(--blue-700));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 24px rgba(30,60,114,0.25);
  flex-shrink: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

.leader-card:hover .leader-image {
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(30,60,114,0.35);
}

.leader-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--blue-800);
  margin-bottom: 0.3rem;
}

.leader-position {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--orange-500);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.75rem;
}

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

.linkedin-badge {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--blue-700);
  margin-top: auto;
  transition: color var(--transition);
}

.leader-card:hover .linkedin-badge { color: var(--orange-500); }

/* Dev grid */
.dev-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.dev-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-200);
  transition: transform var(--transition), box-shadow var(--transition);
  color: var(--neutral-900);
  text-decoration: none;
}

.dev-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.dev-card p {
  font-size: 0.9rem;
  color: var(--neutral-600);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.dev-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.dev-skills span {
  background: var(--blue-100);
  color: var(--blue-800);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  transition: background var(--transition), color var(--transition);
}

.dev-skills span:hover {
  background: var(--blue-800);
  color: var(--white);
}

/* ─── Events ──────────────────────────────────────────────── */
.events { background: var(--white); }

.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.event-card {
  background: var(--neutral-50);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border: 1px solid var(--neutral-200);
  border-left: 4px solid var(--orange-500);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.event-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-left-color: var(--blue-800);
}

.event-tag {
  display: inline-block;
  background: rgba(240,90,40,0.1);
  color: var(--orange-500);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.25rem 0.65rem;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}

.event-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--neutral-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.event-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--blue-800);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.event-card p {
  font-size: 0.9rem;
  color: var(--neutral-600);
  line-height: 1.65;
}

/* ─── Sponsors ────────────────────────────────────────────── */
.sponsors { background: var(--neutral-50); }

.sponsors-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.sponsor-card {
  background: var(--white);
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius);
  padding: 1.5rem 2.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--neutral-600);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), color var(--transition);
  letter-spacing: 0.02em;
}

.sponsor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  color: var(--blue-800);
}

.sponsor-pitch {
  font-size: 1.1rem;
  color: var(--neutral-600);
  margin-bottom: 1.25rem;
}

/* ─── Join CTA ────────────────────────────────────────────── */
.join-cta {
  background: linear-gradient(135deg, var(--blue-900) 0%, #1a3260 50%, var(--blue-900) 100%);
  color: var(--white);
  overflow: hidden;
  position: relative;
}

.join-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 10% 50%, rgba(240,90,40,0.15) 0%, transparent 65%),
    radial-gradient(ellipse 50% 70% at 90% 50%, rgba(45,90,160,0.3) 0%, transparent 65%);
  pointer-events: none;
}

.join-cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.join-cta-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  line-height: 1.15;
}

.join-cta-content p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

/* ─── Contact ─────────────────────────────────────────────── */
.contact {
  background: linear-gradient(135deg, var(--blue-800) 0%, var(--blue-900) 100%);
  color: var(--white);
}

.contact .section-title { color: var(--white); }
.contact .section-title::after { background: linear-gradient(90deg, var(--orange-500), var(--orange-400)); }
.contact .section-subtitle { color: rgba(255,255,255,0.65); }

.contact-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.75rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1.5rem;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  transition: background var(--transition), transform var(--transition);
  color: var(--white);
  text-decoration: none;
}

.contact-item:hover {
  background: rgba(255,255,255,0.13);
  transform: translateY(-5px);
}

.contact-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--orange-500), var(--orange-400));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: 0 8px 24px var(--orange-glow);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
  color: var(--white);
}

.contact-item h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.contact-item p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  line-height: 1.5;
}

/* ─── Footer ──────────────────────────────────────────────── */
footer {
  background: var(--blue-900);
  color: rgba(255,255,255,0.7);
  padding: 3rem 0 2rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 1.75rem;
}

.footer-brand {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.7);
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.social-links a svg {
  width: 18px;
  height: 18px;
}

.social-links a:hover {
  background: var(--orange-500);
  border-color: var(--orange-500);
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px var(--orange-glow);
}

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.4);
}

/* ─── Scroll reveal ───────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s cubic-bezier(0.4,0,0.2,1), transform 0.55s cubic-bezier(0.4,0,0.2,1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── Animations ──────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .about-content { grid-template-columns: 1fr; gap: 3rem; }
  .stats { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  /* Mobile nav */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(13,31,60,0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem 1.5rem 1.75rem;
    gap: 0.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .nav-links.active { display: flex; }

  .nav-links a {
    width: 100%;
    padding: 0.65rem 0.75rem;
    font-size: 1rem;
  }

  .nav-links .nav-cta {
    margin-left: 0;
    margin-top: 0.5rem;
    text-align: center;
    justify-content: center;
  }

  .mobile-menu { display: flex; }

  .leadership-grid,
  .programs-grid,
  .events-grid {
    grid-template-columns: 1fr;
  }

  .contact-info {
    grid-template-columns: 1fr 1fr;
  }

  .footer-top {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}

@media (max-width: 540px) {
  .container { padding: 0 16px; }

  .stats { grid-template-columns: 1fr 1fr; gap: 0.75rem; }

  .hero-actions { flex-direction: column; align-items: center; }

  .contact-info { grid-template-columns: 1fr; }

  .sponsors-grid { flex-direction: column; align-items: center; }
  .sponsor-card { width: 100%; text-align: center; }
}