:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #2a2e38;
  --text: #e8eaed;
  --muted: #9aa1ac;
  --accent: #5b8def;
  --accent-text: #0b0d10;
  --danger: #e2574c;
  --ok: #4caf7d;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

header .brand { font-weight: 700; font-size: 1.1rem; }

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.card h2 { margin-top: 0; font-size: 1.1rem; }

label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.35rem; }
input[type="email"], input[type="text"], input[type="password"] {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #0c0e12;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 1rem;
}

button {
  display: inline-block;
  padding: 0.45rem 0.9rem;
  border-radius: 8px;
  border: none;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  margin-right: 0.35rem;
}

button.primary { background: var(--accent); color: var(--accent-text); padding: 0.65rem 1.25rem; font-size: 1rem; }
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.danger { background: var(--danger); color: #fff; }
button:disabled { opacity: 0.6; cursor: default; }

.row { display: flex; justify-content: space-between; align-items: baseline; padding: 0.5rem 0; border-bottom: 1px solid var(--border); }
.row:last-child { border-bottom: none; }
.row .label { color: var(--muted); font-size: 0.9rem; }

.error { color: var(--danger); font-size: 0.9rem; margin-top: -0.5rem; margin-bottom: 1rem; }
.muted { color: var(--muted); font-size: 0.9rem; }

.hidden { display: none !important; }