:root {
  color-scheme: dark;
  --bg: #070b17;
  --panel: #10172c;
  --panel-2: #171f3b;
  --text: #f3f5ff;
  --muted: #aab4dc;
  --violet: #8b7cff;
  --cyan: #47d7ff;
  --green: #62e6a7;
  --border: #29345d;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 80% -20%, #20275b 0, transparent 34rem), var(--bg);
  color: var(--text);
}
a { color: var(--cyan); }
.hero {
  padding: 4.8rem max(1.2rem, 7vw) 3.2rem;
  border-bottom: 1px solid var(--border);
}
.eyebrow { color: var(--green); font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { max-width: 1000px; font-size: clamp(2.5rem, 6vw, 5.6rem); line-height: .98; margin: 1rem 0; }
.gradient { background: linear-gradient(90deg, var(--violet), var(--cyan)); -webkit-background-clip: text; color: transparent; }
.lead { max-width: 850px; color: var(--muted); font-size: 1.2rem; line-height: 1.65; }
.stats { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.stat { min-width: 150px; padding: 1rem 1.2rem; background: #10172ccc; border: 1px solid var(--border); border-radius: 16px; }
.stat strong { display: block; font-size: 1.65rem; }
.cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.btn {
  display: inline-block;
  padding: .75rem 1.4rem;
  border-radius: 12px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .15s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: linear-gradient(90deg, var(--violet), var(--cyan)); color: #070b17; }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: var(--panel); }
.controls {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(180px, .35fr);
  gap: 1rem;
  padding: 1rem max(1.2rem, 7vw);
  background: #070b17ee;
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
input, select {
  width: 100%;
  padding: .9rem 1rem;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
}
main { padding: 2rem max(1.2rem, 7vw) 5rem; }
.part { margin: 2.2rem 0 3.5rem; }
.part-head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; }
.part-head p { color: var(--muted); max-width: 750px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(285px, 1fr)); gap: 1rem; }
.card {
  padding: 1.15rem;
  background: linear-gradient(145deg, var(--panel), #0c1225);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-3px); border-color: var(--violet); }
.meta { display: flex; justify-content: space-between; color: var(--muted); font-size: .84rem; }
.card h3 { min-height: 2.8rem; margin: .7rem 0; }
.tags { display: flex; flex-wrap: wrap; gap: .35rem; }
.tag { padding: .25rem .5rem; border: 1px solid var(--border); border-radius: 999px; color: var(--muted); font-size: .76rem; }
.actions { display: flex; justify-content: space-between; align-items: center; margin-top: 1rem; }
.done { accent-color: var(--green); }
.hidden { display: none !important; }
footer { padding: 2rem max(1.2rem, 7vw); color: var(--muted); border-top: 1px solid var(--border); }
@media (max-width: 700px) {
  .controls { grid-template-columns: 1fr; }
  .part-head { display: block; }
}