body, html {
  margin:0;
  padding:0;
  width:100%;
  height:100%;
  font-family: "Segoe UI", Arial, sans-serif;
  color:#e6f1ff;
  background: linear-gradient(135deg, #001f3f, #013220);
  overflow-x:hidden;
}

#particles-js {
  position:fixed;
  width:100%;
  height:100%;
  z-index:-1;
}

.container {
  max-width:700px;
  margin:40px auto;
  padding:20px;
  text-align:center;
}

.title {
  font-size:2rem;
  margin-bottom:20px;
  color:#00ffcc;
  text-shadow:0 0 12px #00ffaa;
}

textarea {
  width:100%;
  height:150px;
  padding:15px;
  border-radius:12px;
  border:none;
  margin-bottom:15px;
  outline:none;
  background:#0a2a2a;
  color:#d9faff;
  font-size:1rem;
  resize:none;
  box-shadow:0 0 15px rgba(0,255,200,0.3);
}

.btn-group {
  display:flex;
  justify-content:center;
  gap:10px;
  flex-wrap:wrap;
}
input[type="file"] {
  color:#d9faff;
  background:#0a2a2a;
  padding:10px;
  border-radius:10px;
  border:none;
}

button {
  background: linear-gradient(90deg,#0055ff,#00cc88);
  border:none;
  border-radius:25px;
  padding:12px 20px;
  color:white;
  font-weight:bold;
  cursor:pointer;
  transition:0.3s;
  box-shadow:0 0 12px rgba(0,255,200,0.4);
}
button:hover {
  background: linear-gradient(90deg,#00cc88,#0055ff);
  box-shadow:0 0 22px rgba(0,255,200,0.8);
  transform:scale(1.05);
}

.retrieve-section {
  margin-top:20px;
  display:flex;
  justify-content:center;
  gap:10px;
}
.retrieve-section input {
  padding:12px;
  border-radius:12px;
  border:none;
  outline:none;
  background:#0a2a2a;
  color:#d9faff;
  font-size:1rem;
  width:200px;
}

#result {
  margin-top:15px;
  word-wrap:break-word;
  color:#00ffaa;
}
#timer {
  margin-top:10px;
  font-weight:bold;
  color:#ff5555;
}

.download-btn {
  display:inline-block;
  margin-top:20px;
  padding:18px 50px;
  background: linear-gradient(90deg,#ff5500,#ffaa00);
  color:#fff !important;
  font-weight:bold;
  font-size:1.3rem;
  text-decoration:none;
  border-radius:40px;
  box-shadow:0 0 35px rgba(255,170,0,0.8),0 0 70px rgba(255,85,0,0.7);
  text-align:center;
  transition:all 0.3s ease, transform 0.3s ease;
}
.download-btn:hover {
  background: linear-gradient(90deg,#ffaa00,#ff5500);
  transform:scale(1.15);
  box-shadow:0 0 50px rgba(255,170,0,1),0 0 90px rgba(255,85,0,0.9);
}