/* === Global Style === */
body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: #0a0a0a;
  color: #eaeaea;
  margin: 0;
  padding: 20px;
  text-align: center;
}

h1 {
  font-size: 2rem;
  margin-bottom: 20px;
  text-shadow: 0 0 8px #00e0ff, 0 0 15px #ff004c;
  color: #ffffff;
}

h3 {
  color: #ffffff;
  margin-bottom: 10px;
  text-shadow: 0 0 6px #00e0ff;
}

.container {
  margin: 20px auto;
  max-width: 650px;
  background: rgba(20, 20, 20, 0.85);
  border: 2px solid #111;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 0 15px #00e0ff55, 0 0 25px #ff004c33;
}

/* Drop Area */
.drop-area {
  margin: 15px 0;
  padding: 25px;
  border: 2px dashed #00e0ff;
  border-radius: 12px;
  background: #111;
  color: #aaa;
  cursor: pointer;
  transition: 0.3s;
}
.drop-area:hover {
  border-color: #ff004c;
  color: #fff;
  text-shadow: 0 0 6px #ff004c;
}

/* Button */
button {
  background: linear-gradient(90deg, #00e0ff, #ff004c);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: 10px;
  cursor: pointer;
  margin-top: 10px;
  font-weight: bold;
  box-shadow: 0 0 10px #00e0ff88, 0 0 15px #ff004c55;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
button:disabled {
  background: #444;
  cursor: not-allowed;
}
button:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 0 15px #00e0ffcc, 0 0 25px #ff004caa;
}

/* Progress Bar */
.progress {
  margin-top: 15px;
  width: 100%;
  height: 12px;
  background: #222;
  border-radius: 6px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #00e0ff, #ff004c);
  transition: width 0.3s ease;
}