* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial;
  background: url("bg.gif") no-repeat center center fixed;
  background-size: cover;
  color: #f5f5f5;
  min-height: 100vh;
  line-height: 1.6;
}

/* Header */
.site-header {
  padding: 28px 20px;
  background: rgba(0,0,0,0.65);
  position: sticky;
  top: 0;
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.site-header h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: 2px;
  text-align: center;
  color: #ffffff;
  text-shadow: 0 0 8px rgba(0,0,0,0.8);
}

/* Content */
.content {
  padding: 60px 20px;
  max-width: 900px;
  margin: 0 auto;
}

.links {
  margin-bottom: 80px;
  text-align: center;
}

.links p {
  font-size: 18px;
  margin-bottom: 20px;
  color: #ddd;
  text-shadow: 0 0 8px rgba(0,0,0,0.7);
}

/* Buttons */
.buttons {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.buttons a {
  display: inline-block;
  padding: 12px 20px;
  border: 1px solid rgba(255,255,255,0.25);
  text-decoration: none;
  color: #ffffff;
  border-radius: 10px;
  background: rgba(0,0,0,0.55);
  transition: all 0.3s ease;
  font-weight: 500;
  letter-spacing: 0.5px;
}

.buttons a:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-2px);
}

/* About */
.about {
  margin-top: 180px;
  padding: 50px;
  border-radius: 14px;
  background: rgba(0,0,0,0.7);
  color: #f1f1f1;
  line-height: 1.7;
  font-size: 17px;
  box-shadow: 0 0 25px rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
}

/* Overlay */
.overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.92);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  cursor: pointer;
  transition: opacity 0.5s ease;
}

.overlay-box {
  color: #ffffff;
  font-size: 28px;
  font-weight: bold;
  text-align: center;
  padding: 35px 40px;
  border: 2px solid rgba(255,255,255,0.8);
  border-radius: 14px;
  background: rgba(0,0,0,0.7);
  box-shadow: 0 0 20px rgba(0,0,0,0.8);
  backdrop-filter: blur(6px);
}