:root {
  --bg: #0f1420;
  --panel: #1a2233;
  --text: #e8ecf4;
  --muted: #9aa5b8;
  --accent: #5aa9ff;
  --accent-dark: #3d8ae6;
  --border: #2a3550;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}

nav {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
}

nav .brand {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}

nav a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover, nav a.active { color: var(--accent); }

main {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

h1 { font-size: 2rem; margin-bottom: 0.25rem; }
.subtitle { color: var(--muted); margin-top: 0; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.card h2 { margin-top: 0; font-size: 1.2rem; }

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.field { margin-bottom: 1rem; }

select, input {
  width: 100%;
  max-width: 320px;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #0b1020;
  font-weight: 600;
  padding: 0.6rem 1.2rem;
  border-radius: 6px;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
}

.button:hover { background: var(--accent-dark); }

footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 1.5rem;
}