:root {
  color-scheme: dark;
  --bg: #080813;
  --panel: #14162b;
  --panel-edge: #343a62;
  --text: #f0f2ff;
  --muted: #aeb5dd;
  --cyan: #5ef7ff;
  --magenta: #ff71d0;
  --gold: #ffd86d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 12%, rgba(94, 247, 255, 0.18), transparent 38%),
    radial-gradient(circle at 82% 14%, rgba(255, 113, 208, 0.15), transparent 36%),
    linear-gradient(180deg, #0a0b15 0%, #05060d 100%);
}

.deck {
  width: min(1060px, 94vw);
  margin: 2rem auto;
  display: grid;
  gap: 1rem;
}

.topbar {
  border: 1px solid var(--panel-edge);
  background: linear-gradient(180deg, rgba(20, 22, 43, 0.96), rgba(11, 13, 27, 0.96));
  border-radius: 16px;
  padding: 1.1rem 1.2rem;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
}

.kicker {
  margin: 0;
  color: var(--cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 700;
}

h1 {
  margin: 0.35rem 0;
  font-size: clamp(1.65rem, 3.2vw, 2.4rem);
  line-height: 1.1;
}

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

.layout {
  display: grid;
  grid-template-columns: minmax(270px, 0.85fr) minmax(340px, 1.15fr);
  gap: 1rem;
}

.panel {
  border: 1px solid var(--panel-edge);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(20, 22, 43, 0.96), rgba(10, 12, 24, 0.97));
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.3);
  padding: 1rem;
}

.panel h2 {
  margin: 0 0 0.8rem;
  font-size: 1.02rem;
}

.field {
  display: grid;
  gap: 0.34rem;
  margin-bottom: 0.74rem;
}

.field span {
  color: var(--muted);
  font-size: 0.9rem;
}

.field strong {
  color: var(--text);
}

input[type="text"],
select {
  width: 100%;
  border: 1px solid #4a5388;
  border-radius: 8px;
  background: #101528;
  color: var(--text);
  padding: 0.54rem 0.65rem;
  font-size: 0.95rem;
}

input[type="text"] {
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.52rem;
  margin-top: 0.25rem;
}

button {
  border: 1px solid #59619a;
  border-radius: 9px;
  padding: 0.55rem 0.78rem;
  background: #121934;
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  transform: translateY(-1px);
}

button.primary {
  border-color: #c79e3d;
  background: linear-gradient(180deg, #5d4617, #3f2f0f);
  color: #fff0cf;
}

.frame {
  border: 1px solid #434c7f;
  border-radius: 12px;
  background: #05070f;
  padding: 0.65rem;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: crisp-edges;
  border-radius: 8px;
}

.status {
  margin: 0.74rem 0 0;
  border: 1px solid #495083;
  border-radius: 10px;
  background: #0f1429;
  padding: 0.65rem;
  color: #dce3ff;
  font-size: 0.92rem;
}

.tips {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.85rem;
  display: grid;
  gap: 0.4rem;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .deck {
    margin: 1.2rem auto;
  }
}