:root {
  --bg: #0b0c12;
  --panel: #14161f;
  --panel-2: #1b1e2b;
  --line: #2a2e3f;
  --text: #e7e9f0;
  --muted: #8b90a6;
  --accent: #6ea8fe;
  --accent-2: #c084fc;
  --good: #5fd38a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1000px; margin: 0 auto; padding: 32px 20px 80px; }

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(20, 22, 31, 0.7);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .brand { font-weight: 700; letter-spacing: 0.3px; }
.topbar .brand .dot { color: var(--accent-2); }
.topbar nav { margin-left: auto; display: flex; gap: 18px; font-size: 14px; }
.topbar nav a { color: var(--muted); }
.topbar nav a:hover, .topbar nav a.active { color: var(--text); text-decoration: none; }

h1 { font-size: 30px; margin: 0 0 6px; }
h1 .gradient {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead { color: var(--muted); margin: 0 0 28px; font-size: 15px; line-height: 1.6; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 16px;
}
.card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  transition: transform .12s ease, border-color .12s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--accent); text-decoration: none; }
.card .emoji { font-size: 30px; }
.card h3 { margin: 12px 0 6px; color: var(--text); }
.card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.card .tag {
  display: inline-block; margin-top: 12px; font-size: 11px; color: var(--accent);
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  margin-bottom: 18px;
}

canvas {
  display: block;
  background: #000;
  border-radius: 10px;
  max-width: 100%;
  image-rendering: pixelated;
  touch-action: none;
}

.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 14px; }

button, .btn {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  transition: border-color .1s, background .1s;
}
button:hover, .btn:hover { border-color: var(--accent); }
button.active { border-color: var(--accent); background: rgba(110,168,254,0.15); color: var(--text); }
button:disabled { opacity: .5; cursor: not-allowed; }

label.field { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; }
input[type=range] { accent-color: var(--accent); }
select, input[type=file] { background: var(--panel-2); color: var(--text); border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; }

.row { display: flex; gap: 18px; flex-wrap: wrap; }
.stat { color: var(--muted); font-size: 13px; }
.stat b { color: var(--good); font-variant-numeric: tabular-nums; }
.hint { color: var(--muted); font-size: 13px; line-height: 1.6; }
kbd { background: var(--panel-2); border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; font-size: 12px; }

.back { color: var(--muted); font-size: 13px; }