:root {
  --bg: #0d1117;
  --panel: #161b22;
  --panel2: #1c2128;
  --border: #21262d;
  --text: #e6edf3;
  --muted: #7d8590;
  --accent: #2dd4bf;
  --accent-d: #14b8a6;
  --on-accent: #03120f;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --panel: #f6f8fa;
    --panel2: #eaeef2;
    --border: #d0d7de;
    --text: #1f2328;
    --muted: #57606a;
    --accent: #0d9488;
    --accent-d: #0f766e;
    --on-accent: #ffffff;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code {
  background: var(--panel2);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 92%;
}

/* topbar ------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 28px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text); font-weight: 600; font-size: 18px;
}
.brand-logo { color: var(--accent); flex-shrink: 0; }
.topbar-nav { display: flex; align-items: center; gap: 22px; }
.link { color: var(--muted); }
.link:hover { color: var(--text); text-decoration: none; }

/* CTA buttons --------------------------------------------------- */
.cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent); color: var(--on-accent);
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  transition: transform 120ms ease-out, background 120ms ease-out;
}
.cta:hover { background: var(--accent-d); text-decoration: none; transform: translateY(-1px); }
.cta-small { padding: 8px 16px; font-size: 14px; }
.cta-large { padding: 16px 32px; font-size: 18px; }
.cta-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.cta-ghost:hover { background: var(--panel); color: var(--accent); }

/* layout containers -------------------------------------------- */
main { max-width: 1100px; margin: 0 auto; padding: 0 28px; }

/* hero --------------------------------------------------------- */
.hero {
  display: grid; grid-template-columns: 1.1fr 1fr;
  gap: 60px; align-items: center;
  padding: 80px 0 60px;
}
.hero h1 {
  font-size: 44px; line-height: 1.1; letter-spacing: -.015em;
  margin: 0 0 18px;
}
.lede {
  font-size: 18px; color: var(--muted);
  margin: 0 0 28px; max-width: 540px;
}
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.hero-note { color: var(--muted); font-size: 13px; margin: 0; }

/* hero illustration / fake screenshot --------------------------- */
.hero-art { display: flex; justify-content: center; }
.screenshot {
  position: relative;
  width: 320px;
  padding: 20px 18px 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, .35);
}
.ss-header {
  font-weight: 700; font-size: 22px;
  margin-bottom: 14px;
}
.ss-row {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 14.5px;
}
.ss-row:last-of-type { border-bottom: none; }
.ss-row.done { color: var(--muted); text-decoration: line-through; }
.ss-row.prio { color: var(--accent); }
.ss-row.prio::before { content: ""; }
.ss-row .ss-time {
  margin-left: auto;
  font-size: 12.5px; color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.ss-row.dim { color: var(--muted); }
.ss-fab {
  position: absolute; right: 18px; bottom: -16px;
  width: 48px; height: 48px;
  background: var(--accent); color: var(--on-accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 28px; font-weight: 700;
  box-shadow: 0 6px 16px rgba(0, 0, 0, .35);
}

/* features grid ------------------------------------------------- */
.features { padding: 60px 0; }
.features h2 { font-size: 30px; margin: 0 0 36px; }
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px;
}
.card-icon { font-size: 28px; margin-bottom: 10px; line-height: 1; }
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* why list ----------------------------------------------------- */
.why { padding: 40px 0 60px; }
.why h2 { font-size: 30px; margin: 0 0 24px; }
.why-list {
  list-style: none; padding: 0; margin: 0;
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  font-size: 15.5px;
}
.why-list li {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
}
.why-list strong { color: var(--accent); }

/* final cta band ----------------------------------------------- */
.final-cta {
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 60px 30px;
  margin: 30px 0 50px;
}
.final-cta h2 { margin: 0 0 12px; font-size: 32px; }
.final-cta p { color: var(--muted); margin: 0 0 28px; font-size: 17px; }

/* footer ------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 22px 28px;
  color: var(--muted);
  font-size: 13.5px;
}
.footer > div {
  max-width: 1100px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px;
}

/* responsive --------------------------------------------------- */
@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding: 50px 0 40px; gap: 36px; }
  .hero h1 { font-size: 32px; }
  .lede { font-size: 16px; }
  .grid { grid-template-columns: 1fr; }
  .why-list { grid-template-columns: 1fr; }
  .topbar-nav .link { display: none; }
  .topbar { padding: 12px 18px; }
  main { padding: 0 18px; }
  .features h2, .why h2, .final-cta h2 { font-size: 26px; }
  .final-cta { padding: 48px 20px; }
}