body {
  margin: 0;
  padding: 0;
  font-family: 'Vazirmatn', sans-serif;
  background: linear-gradient(to bottom right, #d7e1ec, #b0bec5);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.site-header {
  width: 100%;
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(10px);
  padding: 20px;
  text-align: center;
  font-size: 2rem;
  font-weight: bold;
  color: #2c3e50;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.upload-wrapper {
  margin-top: 50px;
  width: 90%;
  max-width: 500px;
}

.upload-box {
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 15px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.upload-icon {
  font-size: 4rem;
  color: #3498db;
  margin-bottom: 10px;
}

.select-btn {
  background: #3498db;
  color: white;
  border: none;
  padding: 10px 20px;
  margin-top: 15px;
  border-radius: 30px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.3s;
}

.select-btn:hover {
  background: #2980b9;
}

.file-info {
  margin-top: 15px;
  font-size: 0.9rem;
  color: #333;
}

.progress-area {
  margin-top: 20px;
}

.rules-box {
  margin-top: 40px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.rules-box h2 {
  margin-bottom: 15px;
  font-size: 1.5rem;
  color: #2c3e50;
}

.rules-box ul {
  list-style: none;
  padding: 0;
}

.rules-box li {
  margin-bottom: 10px;
  font-size: 1rem;
  color: #555;
}