/* =========================================================
   Design tokens
   ========================================================= */
:root {
  --bg:            #0a0a0f;
  --bg-card:       #111118;
  --bg-card-hover: #16161f;
  --border:        rgba(255,255,255,0.08);
  --border-hover:  rgba(255,255,255,0.16);

  --text:          #f1f5f9;
  --text-muted:    #64748b;
  --text-subtle:   #334155;

  --accent:        #6366f1;   /* indigo */
  --accent-2:      #8b5cf6;   /* violet */
  --accent-glow:   rgba(99, 102, 241, 0.25);

  --green:         #22c55e;

  --radius-sm:     8px;
  --radius-md:     14px;
  --radius-lg:     20px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --max-w: 900px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: var(--accent-2);
  background: rgba(139, 92, 246, 0.12);
  padding: 0.1em 0.4em;
  border-radius: 4px;
}

/* =========================================================
   Background accents
   ========================================================= */
.noise-overlay {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  z-index: 0;
  opacity: 0.5;
}

.gradient-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.18) 0%, transparent 70%);
  top: -200px; left: -200px;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(139,92,246,0.12) 0%, transparent 70%);
  bottom: -150px; right: -150px;
}

/* =========================================================
   Page wrapper
   ========================================================= */
.page-wrapper {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem 6rem;
}

/* =========================================================
   Nav
   ========================================================= */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 5rem;
}

.nav-logo {
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

/* =========================================================
   Header banner
   ========================================================= */
.header-banner {
  margin-bottom: 4rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0d0d14;
}

.header-banner img {
  width: 100%;
  height: auto;
  display: block;
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  margin-bottom: 7rem;
  max-width: 680px;
}


.hero-title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 0.75rem;
  background: linear-gradient(160deg, #fff 40%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--accent-2);
  font-weight: 500;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-body {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 0.85rem;
  flex-wrap: wrap;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: var(--font-sans);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(99,102,241,0.3), 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  background: #4f52e0;
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(99,102,241,0.5), 0 8px 28px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--text);
  background: rgba(255,255,255,0.04);
  transform: translateY(-1px);
}

/* =========================================================
   Sections
   ========================================================= */
.section {
  margin-bottom: 6rem;
}

.section-label,
.section-title {
  text-align: center;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 2.5rem;
  color: var(--text);
}

/* =========================================================
   Interests
   ========================================================= */
.interests {
  margin-bottom: 5rem;
}

.interest-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

a.interest-card {
  text-decoration: none;
  color: inherit;
}

.interest-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}

.interest-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
}

.interest-card__icon {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.interest-card__icon img {
  width: 28px;
  height: 28px;
}

.interest-card__title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.interest-card__desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-subtle);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--text); }

/* =========================================================
   Animations
   ========================================================= */
.fade-in {
  animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 640px) {
  .nav { margin-bottom: 3rem; }
  .nav-links { gap: 1.25rem; }
  .hero { margin-bottom: 4rem; }
  .interest-cards { grid-template-columns: 1fr 1fr; }
  .footer { flex-direction: column; align-items: flex-start; }
}