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

html, body {
  height: 100%;
  width: 100%;
  font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--background-gradient);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  margin: 0;
}

.card {
  padding: 2rem;
  width: 90%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: center;
}

h1 {
  font-size: 1.6rem;
  color: var(--heading-color);
}

.explanation {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.call {
  font-size: 1rem;
  font-weight: 600;
}

.button {
  display: block;
  width: 100%;
  padding: 0.9rem;
  font-size: 1.1rem;
  font-weight: bold;
  color: var(--button-text);
  background: var(--button-bg);
  border-radius: 10px;
  text-decoration: none;
  transition: transform 0.2s, background 0.3s;
}

.button:hover {
  background: var(--button-hover);
  transform: scale(1.05);
}

.counter {
  font-size: 0.95rem;
  color: var(--text-color);
}

.deadline {
  font-size: 0.95rem;
  color: var(--footer-color);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

#countdown {
  font-size: 1.2rem;
  font-weight: 800;
  background: linear-gradient(90deg, #ff416c, #ff4b2b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-top: 0.3rem;
}

.footer {
  position: absolute;
  bottom: 1rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--footer-color);
  width: 100%;
}