:root {
  --bg-dark: #030615;
  --bg-darker: #01020d;
  --bg-glass: rgba(10, 15, 45, 0.72);
  --text-main: #f4f6ff;
  --text-muted: rgba(236, 241, 255, 0.75);
  --accent: #7c5cff;
  --accent-soft: rgba(124, 92, 255, 0.32);
  --accent-glow: rgba(124, 92, 255, 0.85);
  --accent-secondary: #4ad6ff;
  --container-width: min(1160px, 92vw);
  --radius-large: 28px;
  --radius-medium: 20px;
  --radius-small: 14px;
  --shadow-soft: 0 30px 60px rgba(4, 10, 30, 0.35);
  --transition-base: 180ms ease-in-out;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Poppins", "Segoe UI", Tahoma, sans-serif;
  color: var(--text-main);
  background-color: var(--bg-dark);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
}

body.nav-open {
  overflow: hidden;
}

html {
  scroll-behavior: smooth;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 20% 20%, rgba(124, 92, 255, 0.24), transparent 45%),
    radial-gradient(circle at 80% 16%, rgba(74, 214, 255, 0.18), transparent 40%),
    radial-gradient(circle at 50% 80%, rgba(255, 255, 255, 0.05), transparent 60%);
  pointer-events: none;
  z-index: -2;
}

.offcanvas-overlay {
  position: fixed;
  inset: 0;
  background: rgba(1, 3, 12, 0.7);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 8;
}

.offcanvas-overlay.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.quantum-frame {
  position: fixed;
  inset: -20vh -10vw;
  background: conic-gradient(from 160deg, rgba(124, 92, 255, 0.12), transparent 55% 80%, rgba(74, 214, 255, 0.18));
  filter: blur(50px);
  opacity: 0.8;
  z-index: -3;
}

h1,
h2,
h3 {
  font-family: "Space Grotesk", "Poppins", sans-serif;
  margin: 0 0 0.4em;
}

p {
  margin: 0 0 1.2em;
}

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

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

.container {
  width: var(--container-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.section {
  padding: 6rem 0;
  position: relative;
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.section--dark {
  background: rgba(3, 7, 30, 0.86);
  backdrop-filter: blur(14px);
}

.section--glass {
  background: linear-gradient(160deg, rgba(17, 23, 65, 0.2), rgba(2, 7, 22, 0.8));
  backdrop-filter: blur(24px);
}

.section__header {
  max-width: 540px;
}

.section__header h2 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  letter-spacing: -0.03em;
}

.section__subtitle {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.split {
  display: grid;
  gap: 3rem;
  align-items: start;
}

.content-stack {
  display: grid;
  gap: 1.6rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(3, 5, 20, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(124, 92, 255, 0.15);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand__symbol {
  font-size: 2.2rem;
  color: var(--accent-secondary);
  text-shadow: 0 0 18px rgba(74, 214, 255, 0.7);
}

.brand__label {
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin: 0;
  color: var(--accent-secondary);
}

.brand__name {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
}

.nav {
  display: flex;
  gap: 1.2rem;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.nav a {
  position: relative;
  padding-bottom: 0.3rem;
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-secondary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.nav a:hover::after,
.nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 0.3rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 26px;
  height: 2px;
  background: var(--text-main);
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  padding: 9rem 0 7rem;
}

.hero__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 3.5rem;
  align-items: center;
}

.hero__content h1 {
  font-size: clamp(2.8rem, 5vw, 4.2rem);
  letter-spacing: -0.045em;
  margin-top: 0.8rem;
}

.hero__lead {
  color: var(--text-muted);
  max-width: 600px;
  font-size: 1.1rem;
  margin: 1.2rem 0 1.8rem;
}

.hero__eyebrow {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--accent-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.hero__eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, rgba(124, 92, 255, 0.6), rgba(74, 214, 255, 0.8));
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 2rem;
}

.hero__tags span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(74, 214, 255, 0.28);
  background: rgba(74, 214, 255, 0.12);
  color: var(--text-main);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 2rem 0 2.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border var(--transition-base);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none !important;
  box-shadow: none !important;
}

.button.primary {
  background: linear-gradient(130deg, var(--accent) 0%, #9c85ff 100%);
  color: #fff;
  box-shadow: 0 18px 38px rgba(124, 92, 255, 0.45);
}

.button.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 46px rgba(124, 92, 255, 0.55);
}

.button.ghost {
  border-color: rgba(124, 92, 255, 0.4);
  color: var(--text-main);
  background: rgba(124, 92, 255, 0.1);
}

.button.ghost:hover {
  transform: translateY(-3px);
  border-color: rgba(124, 92, 255, 0.7);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.4rem;
  color: var(--text-muted);
}

.hero__stat {
  display: block;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent-secondary);
}

.hero__portrait {
  position: relative;
  display: grid;
  place-items: center;
  padding: 1.6rem;
  border-radius: var(--radius-large);
  overflow: hidden;
  background: linear-gradient(160deg, rgba(124, 92, 255, 0.16), rgba(2, 6, 24, 0.92));
  border: 1px solid rgba(124, 92, 255, 0.3);
  box-shadow: 0 28px 80px rgba(5, 8, 30, 0.6);
  text-align: center;
  gap: 1.2rem;
}

.hero__glow {
  position: absolute;
  inset: 10%;
  background: radial-gradient(circle at center, rgba(124, 92, 255, 0.45), transparent 70%);
  filter: blur(38px);
  z-index: 0;
  opacity: 0.7;
}

.hero__portrait img {
  width: 100%;
  max-width: min(320px, 80vw);
  border-radius: calc(var(--radius-large) - 8px);
  position: relative;
  z-index: 1;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.hero__portrait figcaption {
  position: relative;
  z-index: 1;
  font-size: 0.85rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.glow-card {
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.3), rgba(1, 4, 24, 0.92));
  border-radius: var(--radius-large);
  padding: 2rem;
  border: 1px solid rgba(124, 92, 255, 0.5);
  box-shadow: 0 20px 60px rgba(124, 92, 255, 0.3);
}

.leadership-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.6rem;
}

.leadership-card {
  background: rgba(3, 10, 28, 0.8);
  padding: 1.8rem;
  border-radius: var(--radius-medium);
  border: 1px solid rgba(74, 214, 255, 0.22);
  position: relative;
  overflow: hidden;
}

.leadership-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top right, rgba(74, 214, 255, 0.18), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.leadership-card:hover::before {
  opacity: 1;
}

.leadership-mentorship {
  margin-top: 2.4rem;
  padding: 2.4rem;
  border-radius: var(--radius-large);
  background: rgba(5, 12, 32, 0.88);
  border: 1px solid rgba(74, 214, 255, 0.2);
  box-shadow: 0 26px 64px rgba(5, 8, 30, 0.45);
  display: grid;
  gap: 1.8rem;
}

.leadership-mentorship__intro h3 {
  margin-bottom: 0.8rem;
  font-size: 1.4rem;
}

.leadership-mentorship__intro p {
  color: var(--text-muted);
  margin: 0;
  max-width: 620px;
}

.mentee-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
}

.mentee-list li {
  padding: 0.55rem 1rem;
  border-radius: var(--radius-small);
  background: rgba(74, 214, 255, 0.12);
  border: 1px solid rgba(74, 214, 255, 0.25);
  font-size: 0.85rem;
  color: var(--text-main);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1.3;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.6rem;
}

.service-card {
  background: rgba(7, 12, 34, 0.78);
  padding: 1.8rem;
  border-radius: var(--radius-medium);
  border: 1px solid rgba(124, 92, 255, 0.2);
}

.service-card ul {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.6rem;
  color: var(--text-muted);
}

.timeline {
  display: grid;
  gap: 1.4rem;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0.3rem;
  bottom: 0.3rem;
  width: 2px;
  background: linear-gradient(180deg, rgba(124, 92, 255, 0.4), transparent);
}

.timeline--wide::before {
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(180deg, rgba(74, 214, 255, 0.5), rgba(124, 92, 255, 0.3));
}

.timeline__item {
  padding-left: 2rem;
  position: relative;
}

.timeline--wide .timeline__item {
  padding-left: 0;
  padding-top: 1rem;
  padding-bottom: 1rem;
  text-align: center;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.3rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-secondary);
  box-shadow: 0 0 12px rgba(74, 214, 255, 0.6);
}

.timeline--wide .timeline__item::before {
  left: 50%;
  transform: translate(-50%, 0);
  top: 0.65rem;
}

.timeline__year {
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-secondary);
  display: inline-block;
  margin-bottom: 0.4rem;
}

.site-footer {
  padding: 3rem 0;
  background: rgba(1, 2, 12, 0.9);
  border-top: 1px solid rgba(124, 92, 255, 0.22);
}

.footer__grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
}

.footer__grid a {
  color: var(--accent-secondary);
}

.back-to-top {
  display: inline-flex;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(124, 92, 255, 0.55);
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base), transform var(--transition-base);
}

.back-to-top:hover {
  background: rgba(124, 92, 255, 0.24);
  transform: translateY(-2px);
}

@media (max-width: 960px) {
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    width: min(340px, 80vw);
    flex-direction: column;
    align-items: flex-start;
    gap: 1.6rem;
    padding: 6rem 2.4rem 3rem;
    border-radius: 0;
    background: rgba(3, 7, 24, 0.98);
    border-left: 1px solid rgba(74, 214, 255, 0.2);
    box-shadow: -24px 0 60px rgba(5, 8, 20, 0.6);
    transform: translateX(100%);
    opacity: 1;
    pointer-events: none;
    transition: transform 240ms ease;
    z-index: 11;
  }

  .nav.is-open {
    transform: translateX(0);
    pointer-events: auto;
  }

  .nav a {
    font-size: 0.95rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
  }

  .nav-toggle {
    display: flex;
    position: relative;
    z-index: 12;
  }

  .nav.is-open + .nav-toggle span:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
  }
  .nav.is-open + .nav-toggle span:nth-child(2) {
    transform: translateY(-5px) rotate(-45deg);
  }
}

@media (max-width: 720px) {
  .site-header .container {
    padding: 1rem 0;
  }

  .hero {
    padding-top: 7rem;
  }

  .section {
    padding: 4.8rem 0;
  }

  .leadership-mentorship {
    padding: 1.8rem;
  }

  .mentee-list {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .timeline::before {
    left: 0.3rem;
  }

  .timeline--wide::before {
    display: none;
  }

  .timeline--wide .timeline__item {
    text-align: left;
    padding-left: 1.6rem;
  }

  .timeline--wide .timeline__item::before {
    left: 0;
    transform: none;
  }

  .footer__grid {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .hero__stats {
    grid-template-columns: 1fr;
  }

  .mentee-list {
    grid-template-columns: 1fr;
  }
}