/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
  --color-bg: #0a0a0a;
  --color-surface: #141414;
  --color-border: #1e1e1e;
  --color-accent: #4f7df7;
  --color-accent-glow: rgba(79, 125, 247, 0.35);
  --color-text: #e8e8e8;
  --color-text-muted: #888;
  --color-white: #fff;

  --font-heading: 'Sora', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: clamp(5rem, 10vw, 8rem);

  --fs-body: clamp(1rem, 1vw + 0.75rem, 1.125rem);
  --fs-lg: clamp(1.125rem, 1.2vw + 0.85rem, 1.35rem);
  --fs-h2: clamp(1.75rem, 3vw + 0.5rem, 2.75rem);
  --fs-h1: clamp(2.5rem, 5vw + 1rem, 5rem);

  --max-width: 900px;
  --radius: 12px;
  --transition: 0.25s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ========================================
   Nav
   ======================================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-sm) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.nav-cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  padding: 0.5em 1.25em;
  border-radius: 999px;
  transition: background var(--transition), color var(--transition);
}

.nav-cta:hover {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ========================================
   Hero
   ======================================== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  min-height: 80vh;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 500px;
  height: 500px;
  translate: -50% -50%;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
  filter: blur(80px);
  animation: glow-pulse 6s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes glow-pulse {
  0% {
    opacity: 0.5;
    scale: 0.9;
  }
  100% {
    opacity: 1;
    scale: 1.15;
  }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--fs-h1);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.03em;
  line-height: 1.1;
  position: relative;
}

.hero-subtitle {
  margin-top: var(--space-sm);
  font-size: var(--fs-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  position: relative;
}

/* ========================================
   Sections (shared)
   ======================================== */
.section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

.section-heading {
  font-family: var(--font-heading);
  font-size: var(--fs-h2);
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
  text-align: center;
}

/* ========================================
   Feature Cards
   ======================================== */
.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-md);
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--color-accent);
}

.card-icon {
  display: block;
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
  color: var(--color-accent);
}

.card h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ========================================
   Team
   ======================================== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.team-card {
  text-align: center;
  padding: var(--space-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.avatar {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-sm);
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), #7b61ff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-white);
}

.team-card h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-white);
  margin-bottom: 0.2rem;
}

.team-role {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.team-bio {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========================================
   Footer / Contact
   ======================================== */
.footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  text-align: center;
}

.footer-email {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--color-accent);
  border-bottom: 2px solid transparent;
  transition: border-color var(--transition);
  margin-bottom: var(--space-md);
}

.footer-email:hover {
  border-bottom-color: var(--color-accent);
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.footer-social a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: color var(--transition);
}

.footer-social a:hover {
  color: var(--color-accent);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* ========================================
   Fade-in Animations
   ======================================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fade-up 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }

@keyframes fade-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   Responsive — Mobile
   ======================================== */
@media (max-width: 768px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 60vh;
  }

  .hero-glow {
    width: 300px;
    height: 300px;
  }
}