:root {
  --bg: #0f1115;
  --card: #181b21;
  --line: #262b33;
  --text: #e6e6e6;
  --dim: #8b94a3;
  --blue: #3dd68c;
  --bad: #f85149;
}
* { box-sizing: border-box; }
body.auth-body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, "Segoe UI", sans-serif;
  padding: 16px;
}
.auth-card {
  width: min(380px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px 24px 22px;
}
.auth-card h1 { margin: 0 0 6px; font-size: 20px; font-weight: 650; }
.auth-sub { margin: 0 0 20px; color: var(--dim); font-size: 13px; }
.auth-form label { display: block; font-size: 12px; color: var(--dim); margin-bottom: 12px; }
.auth-form input {
  display: block;
  width: 100%;
  margin-top: 5px;
  padding: 9px 11px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.auth-form input:focus { outline: none; border-color: var(--blue); }
.auth-btn {
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border: 0;
  border-radius: 8px;
  background: var(--blue);
  color: #062015;
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}
.auth-err { color: var(--bad); font-size: 13px; margin: 0 0 8px; }
.hidden { display: none; }