:root {
  --background: #f4f6f8;
  --surface: #ffffff;
  --text: #1f2933;
  --muted: #66727f;
  --border: #d7dde3;
  --primary: #2457a6;
  --primary-dark: #1b4381;
  --error: #a4262c;
  --error-background: #fcebec;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--text);
  font: 1rem/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.auth-page {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
}

.login-shell { width: min(100%, 28rem); }

.login-card {
  padding: 2.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  box-shadow: 0 0.75rem 2rem rgb(31 41 51 / 8%);
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1 { margin: 0; font-size: 1.8rem; line-height: 1.2; }
.intro { margin: 0.5rem 0 1.5rem; color: var(--muted); }

.login-form { display: grid; gap: 0.5rem; }

.login-form label {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.login-form input {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.35rem;
  background: var(--surface);
  color: inherit;
  font: inherit;
}

.login-form input:focus {
  outline: 2px solid rgb(36 87 166 / 25%);
  border-color: var(--primary);
}

.button {
  width: 100%;
  margin-top: 1rem;
  padding: 0.7rem 1rem;
  border: 1px solid transparent;
  border-radius: 0.35rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.button.primary { background: var(--primary); color: #fff; }
.button.primary:hover { background: var(--primary-dark); }
.button.google { background: #fff; border-color: var(--border); color: var(--text); }
.button.google:hover { border-color: var(--primary); }

.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.divider::before,
.divider::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--border);
}

.error {
  margin: 1rem 0;
  padding: 0.7rem 0.8rem;
  border-radius: 0.35rem;
  background: var(--error-background);
  color: var(--error);
  font-size: 0.9rem;
}

@media (max-width: 30rem) {
  .login-card { padding: 1.5rem; }
}