:root {
  color-scheme: light;
  --sl-bg: #f6f7fb;
  --sl-card: #ffffff;
  --sl-border: rgba(17, 24, 39, 0.10);
  --sl-text: #111827;
  --sl-muted: #6b7280;
  --sl-accent: #2d8185;
  --sl-danger-bg: #fef2f2;
  --sl-danger-border: rgba(220, 38, 38, 0.25);
  --sl-danger-text: #991b1b;
  --sl-info-bg: #f0f7ff;
  --sl-info-border: rgba(37, 99, 235, 0.20);
  --sl-info-text: #1e40af;
  --sl-radius: 16px;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(900px 520px at 15% 0%, rgba(45, 129, 133, 0.12), transparent 60%),
  radial-gradient(760px 460px at 85% 10%, rgba(45, 129, 133, 0.07), transparent 55%),
  var(--sl-bg);
  color: var(--sl-text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.sl-card {
  width: 100%;
  max-width: 400px;
  padding: 36px 32px 28px;
  background: var(--sl-card);
  border: 1px solid var(--sl-border);
  border-radius: var(--sl-radius);
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04), 0 12px 40px rgba(17, 24, 39, 0.08);
}

.sl-logo {
  display: block;
  height: 28px;
  width: auto;
}

.sl-title {
  margin: 26px 0 6px;
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.sl-subtitle {
  margin: 0;
  color: var(--sl-muted);
}

.sl-notice {
  display: flex;
  gap: 10px;
  margin-top: 22px;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 13px;
}

.sl-notice-title {
  display: block;
  font-weight: 600;
}

.sl-notice-denied {
  background: var(--sl-danger-bg);
  border-color: var(--sl-danger-border);
  color: var(--sl-danger-text);
}

.sl-notice-info {
  background: var(--sl-info-bg);
  border-color: var(--sl-info-border);
  color: var(--sl-info-text);
}

.sl-google {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  margin-top: 26px;
  padding: 12px 16px;
  border: 1px solid var(--sl-border);
  border-radius: 10px;
  background: var(--sl-card);
  color: var(--sl-text);
  font-size: 14px;
  font-weight: 550;
  text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease, box-shadow 120ms ease;
}

.sl-google:hover {
  background: #fafafa;
  border-color: rgba(17, 24, 39, 0.22);
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.06);
}

.sl-google:focus-visible {
  outline: 2px solid var(--sl-accent);
  outline-offset: 2px;
}

.sl-google svg {
  flex: none;
}

.sl-footer {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--sl-border);
  color: var(--sl-muted);
  font-size: 12px;
  text-align: center;
}