* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #666666;
  --border: #e0e0e0;
}

[data-theme="dark"] {
  --bg: #111111;
  --fg: #f0f0f0;
  --muted: #999999;
  --border: #333333;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  transition: background .3s, color .3s;
}

.landing {
  max-width: 560px;
  margin: 0 auto;
  padding: 4rem 1.5rem;
  text-align: center;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.tagline {
  font-size: 1.1rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.btn-google {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  padding: .8rem 1.4rem;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--fg);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-google:hover { border-color: var(--fg); }
.btn-google svg { width: 20px; height: 20px; }

.status {
  margin-top: 1rem;
  font-size: .85rem;
  color: var(--muted);
  min-height: 1.25rem;
}

.contact { margin-top: 2rem; }
.contact a { color: var(--muted); text-decoration: none; font-size: .9rem; }
.contact a:hover { color: var(--fg); }

.theme-toggle {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  cursor: pointer;
  color: var(--fg);
}