:root {
  color-scheme: light dark;
  --accent: #526de8;
  --bg: #f4f5f7;
  --surface: rgba(255, 255, 255, .66);
  --text: #17191e;
  --muted: #666b76;
  --line: rgba(23, 25, 30, .12);
  --glow: color-mix(in srgb, var(--accent) 22%, transparent);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow-x: hidden;
  color: var(--text);
  background: var(--bg);
  transition: color .3s ease, background-color .3s ease;
}

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 28%, var(--glow), transparent 28rem),
    radial-gradient(circle at 82% 76%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 25rem),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: auto, auto, 4rem 4rem, 4rem 4rem;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

.topbar, footer {
  width: min(100% - 3rem, 1180px);
  margin-inline: auto;
  display: flex;
  align-items: center;
}

.topbar { justify-content: space-between; padding-block: 1.75rem; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: inherit;
  font-weight: 650;
  text-decoration: none;
  letter-spacing: -.02em;
}

.brand-mark {
  width: .85rem;
  height: .85rem;
  border: 3px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--accent) 13%, transparent);
}

.theme-toggle {
  width: 2.65rem;
  height: 2.65rem;
  display: grid;
  place-items: center;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  backdrop-filter: blur(14px);
}

.theme-toggle:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.theme-toggle:focus-visible, .contact:focus-visible { outline: 3px solid var(--glow); outline-offset: 3px; }
.theme-toggle svg { width: 1.1rem; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.moon { display: none; }

main {
  width: min(100% - 3rem, 1180px);
  margin-inline: auto;
  display: grid;
  align-items: center;
  padding-block: 5rem;
}

.hero { max-width: 850px; }

.eyebrow {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.status-dot {
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px var(--glow);
  animation: breathe 2.8s ease-in-out infinite;
}

h1 {
  margin: 0;
  max-width: 13ch;
  font-size: clamp(3.4rem, 9vw, 7.8rem);
  font-weight: 660;
  letter-spacing: -.065em;
  line-height: .93;
  text-wrap: balance;
}

.intro {
  max-width: 610px;
  margin: 2.1rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  line-height: 1.65;
}

.actions { margin-top: 2.25rem; }

.contact {
  display: inline-flex;
  align-items: center;
  gap: .8rem;
  padding: .9rem 1.15rem;
  color: #fff;
  background: var(--accent);
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 650;
  text-decoration: none;
  box-shadow: 0 14px 40px color-mix(in srgb, var(--accent) 24%, transparent);
  transition: transform .2s ease, box-shadow .2s ease;
}

.contact:hover { transform: translateY(-2px); box-shadow: 0 18px 46px color-mix(in srgb, var(--accent) 32%, transparent); }
.contact svg { width: 1.15rem; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linejoin: round; }

footer {
  gap: .75rem;
  padding-block: 1.75rem;
  color: var(--muted);
  font-size: .8rem;
}

.footer-separator { width: 1px; height: .8rem; background: var(--line); }

html[data-theme="dark"] {
  --bg: #101216;
  --surface: rgba(27, 30, 37, .7);
  --text: #f4f5f7;
  --muted: #a3a7b1;
  --line: rgba(255, 255, 255, .08);
}

html[data-theme="dark"] .sun { display: none; }
html[data-theme="dark"] .moon { display: block; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101216;
    --surface: rgba(27, 30, 37, .7);
    --text: #f4f5f7;
    --muted: #a3a7b1;
    --line: rgba(255, 255, 255, .08);
  }
  :root:not([data-theme="light"]) .sun { display: none; }
  :root:not([data-theme="light"]) .moon { display: block; }
}

@media (max-width: 640px) {
  .topbar, main, footer { width: min(100% - 2rem, 1180px); }
  .topbar, footer { padding-block: 1.25rem; }
  main { padding-block: 3.5rem; }
  h1 { font-size: clamp(3rem, 16vw, 5rem); }
  .intro { margin-top: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

@keyframes breathe {
  0%, 100% { box-shadow: 0 0 0 4px var(--glow); }
  50% { box-shadow: 0 0 0 8px transparent; }
}