:root {
  --bg: #eef4f7;
  --panel: #ffffff;
  --line: #d9e2ea;
  --ink: #22384f;
  --muted: #627388;
  --accent: #49a8dc;
  --header: #3d556c;
  --shadow: 0 22px 44px rgba(24, 37, 53, 0.08);
  --error-bg: #fff1f1;
  --error-border: #efb1b1;
  --error-text: #a43f3f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  background: radial-gradient(circle at top, #f8fbfd 0%, var(--bg) 48%, #e8eff4 100%);
  color: var(--ink);
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.auth-card {
  width: min(560px, 100%);
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.4rem;
}

.eyebrow {
  margin: 0 0 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  color: var(--muted);
  font-weight: 700;
}

.auth-card h1 {
  margin: 0 0 0.45rem;
  font-size: 2rem;
}

.muted {
  color: var(--muted);
  line-height: 1.6;
}

.auth-form {
  margin-top: 1.2rem;
  display: grid;
  gap: 1rem;
}

.auth-field {
  display: grid;
  gap: 0.45rem;
}

.auth-field span {
  color: #4f6278;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.auth-field input {
  height: 50px;
  border: 2px solid #dfe7ee;
  background: #fff;
  padding: 0 0.9rem;
  color: var(--ink);
}

.auth-btn {
  height: 50px;
  border: 0;
  background: var(--header);
  color: #fff;
  font-weight: 700;
}

.auth-btn:hover {
  background: #32495f;
}

.auth-error {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--error-border);
  background: var(--error-bg);
  color: var(--error-text);
  font-weight: 600;
}

.auth-links {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.auth-links a {
  color: #2f5c80;
  text-decoration: none;
  font-weight: 700;
}

.hidden { display: none !important; }