* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, sans-serif;
}

body {
  min-height: 100vh;
  background-image:
    linear-gradient(
      to top,
      rgba(0, 0, 0, 0.85) 0%,
      rgba(0, 0, 0, 0) 60%
    ),
    url("../ohv/ohv.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.logo {
  position: absolute;
  top: 30px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 300px;
  width: 80%;
  height: auto;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.6));
}

.center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: white;
}

.btn {
  background-color: #6b0000;
  color: white;
  border: none;
  padding: 18px 50px;
  font-size: 20px;
  font-weight: bold;
  letter-spacing: 2px;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 6px;

  transition:
    transform 0.3s ease,
    background-color 0.3s ease,
    box-shadow 0.3s ease;
}

.btn:hover {
  transform: scale(1.15);
  background-color: #8b0000;
  box-shadow: 0 15px 40px rgba(0,0,0,0.6);
}

.countdown {
  margin-top: 25px;
  font-size: 20px;
  letter-spacing: 1px;
  opacity: 0.9;
}