:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #182230;
  background: #f3f6fb;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(circle at top, #e8f0ff 0, #f3f6fb 50%);
}

.card {
  width: min(100%, 520px);
  padding: clamp(28px, 6vw, 48px);
  border: 1px solid #dce4ef;
  border-radius: 22px;
  background: #fff;
  box-shadow: 0 24px 70px rgb(28 47 78 / 10%);
}

.eyebrow {
  margin: 0 0 14px;
  color: #3568b8;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 { margin: 0; font-size: clamp(1.8rem, 5vw, 2.5rem); line-height: 1.1; }
.intro { margin: 16px 0 22px; color: #526173; line-height: 1.6; }

.status {
  margin: 0 0 22px;
  padding: 12px 14px;
  border-radius: 12px;
  background: #f0f5fc;
  color: #31445e;
  line-height: 1.45;
}

.actions { display: grid; gap: 12px; }
.button {
  width: 100%;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border: 0;
  border-radius: 12px;
  color: #fff;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: transform 120ms ease, filter 120ms ease;
}

.button:hover { filter: brightness(1.06); transform: translateY(-1px); }
.button:focus-visible { outline: 3px solid #88b7ff; outline-offset: 3px; }
.button-google { background: #2867c7; }
.button-github { background: #20252d; }
.button-secondary { background: #58677a; }
.note { margin: 24px 0 0; color: #687789; font-size: 0.88rem; line-height: 1.5; }

[hidden] { display: none !important; }