:root {
  color-scheme: light;
  --bg: #f1f5f9;
  --panel: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #111827;
  --danger: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top right, #e2e8f0 0%, var(--bg) 45%, #dbeafe 100%);
  color: var(--text);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 20px;
}

.card {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 14px 35px rgba(15, 23, 42, 0.08);
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

h1 {
  margin: 6px 0 4px;
}

.subtle {
  margin: 0 0 14px;
  color: var(--muted);
}

.tiny {
  font-size: 12px;
}

form {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input[type="password"] {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 15px;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn {
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: white;
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
}

.btn:disabled {
  opacity: 0.65;
  cursor: default;
}

.status {
  min-height: 20px;
  margin: 10px 0 0;
  color: var(--muted);
}

.status.error {
  color: var(--danger);
}