* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  font-family: Arial, Helvetica, sans-serif;
  background: #f5f6f8;
  color: #111827;
}

body { min-height: 100vh; }

.hidden { display: none !important; }

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

.auth-card {
  width: min(420px, 100%);
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  padding: 28px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.10);
}

h1 {
  margin: 0 0 24px;
  text-align: center;
  font-size: 28px;
}

h2 {
  margin: 0 0 20px;
  font-size: 22px;
}

.auth-actions {
  display: grid;
  gap: 12px;
}

.auth-form {
  display: grid;
  gap: 10px;
}

label {
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  height: 44px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0 11px;
  font: inherit;
  outline: none;
}

input:focus {
  border-color: #64748b;
  box-shadow: 0 0 0 3px rgba(100, 116, 139, 0.12);
}

button {
  font: inherit;
  cursor: pointer;
}

.primary,
.secondary {
  width: 100%;
  min-height: 44px;
  border-radius: 8px;
  font-weight: 700;
}

.primary {
  border: 1px solid #111827;
  background: #111827;
  color: #ffffff;
}

.secondary {
  border: 1px solid #cbd5e1;
  background: #ffffff;
  color: #111827;
}

.primary:disabled,
.secondary:disabled {
  opacity: 0.55;
  cursor: default;
}

.text-button {
  margin-top: 2px;
  border: 0;
  background: transparent;
  color: #475569;
  padding: 8px 0;
}

.status {
  min-height: 20px;
  margin-top: 14px;
  text-align: center;
  color: #b91c1c;
  font-size: 13px;
  line-height: 1.45;
}

.status.ok { color: #166534; }