:root {
  --bg: #0b0c10;
  --card: #11131a;
  --text: #e8eaf0;
  --muted: #a9afc3;
  --line: #23283a;
  --accent: #7c5cff;
  --accent2: #27d3a2;
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 700px at 20% -10%, rgb(124 92 255 / 25%), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgb(39 211 162 / 18%), transparent 55%),
    var(--bg);
  color: var(--text);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 18px 64px;
}

.card {
  border: 1px solid var(--line);
  background: rgb(17 19 26 / 72%);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 14px;
}

.hero p {
  color: var(--muted);
  line-height: 1.45;
}

h1,
h2 {
  margin-top: 0;
}

.hint {
  color: var(--muted);
  margin-top: -0.2rem;
}

.stage-links {
  display: flex;
  gap: 10px;
  max-width: 780px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

h1,
h2 {
  margin-top: 0;
}

header p {
  opacity: 0.9;
}

.card {
  background: color-mix(in srgb, var(--card) 90%, black 10%);
  border: 1px solid #4a4881;
  border-radius: 14px;
  padding: 1.2rem;
  margin-bottom: 1rem;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.25);
}

form {
  display: grid;
  gap: 0.65rem;
}

input,
select,
button {
  border-radius: 10px;
  border: 1px solid #5f5cb0;
  font-size: 1rem;
  padding: 0.55rem 0.65rem;
}

input,
select {
  background: #181733;
  color: var(--text);
}

button {
  margin-top: 0.5rem;
  border: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #120f25;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

.message {
  margin: 0.8rem 0 0;
  min-height: 1.2em;
  color: #9bf4b4;
}

.hint {
  margin-top: -0.2rem;
  opacity: 0.75;
}

li {
  margin-bottom: 0.45rem;
}


.stage-links {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.stage-link {
  display: inline-flex;
  align-items: center;
  border: 1px solid #5f5cb0;
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  color: var(--text);
  text-decoration: none;
  background: #181733;
}

.stage-link:hover {
  border-color: var(--accent-2);
}