:root {
  --bg: #111;
  --fg: #f0f0f0;
  --accent: #e4572e;
}
[data-theme='light'] {
  --bg: #ffffff;
  --fg: #111111;
  --accent: #e4572e;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html, body {
  height: 100%;
  width: 100%;
}
body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--fg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s, color 0.3s;
  padding: 1rem;
}
main {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 700px;
  width: 100%;
}
.logo {
  width: 200px;
  animation: fadeIn 2s ease-out, pulse 2.5s infinite alternate ease-in-out;
  margin-bottom: 1rem;
}
h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}
.description {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}
.socials {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.socials img {
  width: 32px;
  height: 32px;
}
.newsletter {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 1rem;
}
.newsletter input {
  padding: 0.5rem;
  font-size: 1rem;
  border: 1px solid var(--fg);
  background: transparent;
  color: var(--fg);
}
.newsletter button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  cursor: pointer;
}
.contact {
  font-size: 0.9rem;
}
.theme-toggle {
  position: absolute;
  top: 1rem;
  right: 1rem;
}
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
  from { transform: scale(1); }
  to { transform: scale(1.03); }
}