:root {
  --bg: #0e1116;
  --card: #151a22;
  --muted: #97a3b6;
  --text: #e7edf5;
  --accent: #6ea8fe;
  --accent-2: #a78bfa;
  --ring: #263547;
  --radius: 16px;
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(1200px 800px at 10% 10%, #121722 0%, #0b0e13 60%, #05070a 100%);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
}

.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
  padding: 1.25rem;
}

header {
  text-align: center;
  padding-top: 1.25rem;
  padding-bottom: 0.25rem;
}

h1 {
  margin: 0;
  font-size: clamp(1.6rem, 2.2vw + 1rem, 2.4rem);
  letter-spacing: 0.25px;
}

.sub {
  margin-top: 0.25rem;
  color: var(--muted);
}

.controls {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  margin: 1.25rem 0 1.75rem 0;
}

.control-group {
  background: linear-gradient(180deg, #131824, #101520);
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: 0 6px 20px rgba(0,0,0,0.25);
}

.control-group h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  color: var(--accent);
}

.btn {
  appearance: none;
  border: 1px solid #243042;
  background: linear-gradient(180deg, #1b2230, #151b26);
  color: var(--text);
  padding: 0.55rem 0.9rem;
  border-radius: 12px;
  cursor: pointer;
  margin: 0.25rem 0.25rem 0.25rem 0;
  transition: transform 120ms ease, box-shadow 120ms ease, border-color 120ms ease;
  box-shadow: 0 3px 10px rgba(0,0,0,0.22);
}

.btn:hover { transform: translateY(-1px); border-color: #2e415a; }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.btn-reset {
  border-color: #3a274d;
  background: linear-gradient(180deg, #241833, #1b1326);
  color: #eadcff;
}

.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.card:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(0,0,0,0.35); }

.card-img {
  display: block;
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card-body {
  padding: 0.9rem 1rem 1.1rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  color: var(--accent-2);
}

.details {
  margin: 0;
  color: var(--muted);
}


code {
  background: #0f1520;
  border: 1px solid #1f2a3b;
  border-radius: 6px;
  padding: 0.1rem 0.35rem;
}