/* ================================================================
   TOKENS
   ================================================================ */

:root {
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, "URW Palladio L", Georgia, serif;
  --sans: 'Space Grotesk', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', 'Space Mono', monospace;
  --max-w: 1040px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);

  --bg:          #08080c;
  --bg-alt:      #0e0e14;
  --surface:     #14141e;
  --border:      #1e1e2e;
  --text:        #e8e8f0;
  --text-2:      #b0b0c4;
  --text-3:      #6e6e88;
  --accent:      #7b6ff0;
  --accent-dim:  rgba(123, 111, 240, 0.12);
  --glow:        rgba(123, 111, 240, 0.06);
  --grid-color:  rgba(255, 255, 255, 0.025);
  --dot-color:   rgba(255, 255, 255, 0.03);
  --radial-hero: radial-gradient(ellipse 60% 50% at 80% 50%, rgba(123, 111, 240, 0.06), transparent);
  --hero-glow-1: rgba(123, 111, 240, 0.10);
  --hero-glow-2: rgba(56, 189, 248, 0.05);
  --hero-glow-3: rgba(168, 85, 247, 0.06);
  --hero-dot:    rgba(255, 255, 255, 0.04);
}

/* ================================================================
   RESET
   ================================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--serif);
  font-size: 20px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ================================================================
   INTRO
   ================================================================ */

.intro-bg {
  position: relative;
  overflow: hidden;
}

.intro-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, var(--hero-glow-1), transparent 70%),
    radial-gradient(ellipse 50% 80% at 20% 80%, var(--hero-glow-2), transparent 60%),
    radial-gradient(circle at 90% 90%, var(--hero-glow-3), transparent 40%);
  pointer-events: none;
}

.intro-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(var(--hero-dot) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.4;
  pointer-events: none;
}

.intro {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4rem 2.5rem;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}


.intro-name {
  font-family: var(--mono);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1.2rem;
}

.intro h1 {
  font-family: var(--sans);
  font-size: clamp(2.8rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 780px;
}

.intro-sub-headline {
  font-family: var(--sans);
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  font-weight: 400;
  color: var(--text-2);
  margin-top: 0.6rem;
  letter-spacing: -0.01em;
}

.em {
  color: var(--accent);
  font-style: italic;
}

.intro-sub {
  font-family: var(--serif);
  margin-top: 2rem;
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text-2);
  max-width: 660px;
  line-height: 1.5;
}

.intro-relay {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--text-3);
  margin-top: 1.5rem;
  max-width: 660px;
  line-height: 1.5;
}

.relay-link {
  color: var(--accent);
  border-bottom: 1px solid var(--accent-dim);
  transition: border-color 0.2s;
}

.relay-link:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.intro-contact {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
}

.intro-contact a {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  padding-bottom: 3px;
  transition: color 0.2s, border-color 0.2s;
}

.intro-contact a:hover {
  color: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* ── Baton rail ── */

.intro-rail {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  padding-left: 3rem;
}

.rail-track {
  position: relative;
  width: 3px;
  height: 320px;
  background: var(--border);
  border-radius: 3px;
}

.rail-dot {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px var(--accent-dim), 0 0 4px var(--accent);
  animation: rail-slide 4s ease-in-out infinite;
}

@keyframes rail-slide {
  0%, 100% { top: 0; }
  50%      { top: calc(100% - 11px); }
}

.rail-stations {
  position: absolute;
  top: 0;
  left: 20px;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none;
}

.rail-stations span {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  line-height: 1;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 720px) {
  body {
    font-size: 17px;
  }

  .intro {
    flex-direction: column;
    justify-content: center;
    padding: 3rem 1.5rem;
    min-height: 100dvh;
  }

  .intro h1 {
    font-size: clamp(2rem, 8vw, 2.8rem);
  }

  .intro-sub-headline {
    font-size: 1.15rem;
  }

  .intro-sub {
    font-size: 1.1rem;
  }

  .intro-sub br {
    display: none;
  }

  .intro-relay {
    font-size: 0.85rem;
  }

  .intro-contact {
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
  }

  .intro-contact a {
    font-size: 1rem;
  }

  .intro-rail {
    padding-left: 0;
    padding-top: 2.5rem;
    align-self: flex-start;
  }

  .rail-track {
    width: 100%;
    height: 3px;
    display: flex;
    align-items: center;
    width: 200px;
  }

  .rail-dot {
    animation: rail-slide-h 4s ease-in-out infinite;
    top: 50%;
    transform: translateY(-50%);
    left: 0;
  }

  .rail-stations {
    flex-direction: row;
    top: 16px;
    left: 0;
    width: 200px;
    height: auto;
  }
}

@keyframes rail-slide-h {
  0%, 100% { left: 0; top: 50%; }
  50%      { left: calc(100% - 11px); top: 50%; }
}