/* Body & Background */
body {
  background: #000; /* خلفية سوداء */
  color: #fff; /* خط أبيض */
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  animation: fadeIn 2s ease-in-out;
}

/* حركة إبداعية للخلفية */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  background: radial-gradient(circle at center, #111, #000);
  animation: pulseBackground 6s infinite alternate;
}

@keyframes pulseBackground {
  0% { background: radial-gradient(circle at center, #222, #000); }
  100% { background: radial-gradient(circle at center, #000, #111); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Header */
header {
  background: linear-gradient(45deg, #444, #111);
  padding: 15px;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
}

.navbar-brand,
.nav-link {
  color: #fff !important;
  font-weight: bold;
}

.nav-link:hover {
  color: #00eaff !important;
  text-shadow: 0 0 10px #00eaff;
}

/* Main Content */
.container {
  margin-top: 30px;
  background: #111;
  padding: 30px;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
  border-radius: 15px;
  border: 1px solid #333;
  color: #fff;
  transition: transform 0.3s ease;
}

.container:hover {
  transform: scale(1.01);
}

/* Dropzone */
#dropzone {
  border: 2px dashed #555;
  color: #aaa;
  padding: 20px;
  text-align: center;
}

#dropzone:hover {
  border-color: #00eaff;
  color: #00eaff;
  text-shadow: 0 0 5px #00eaff;
}

/* Buttons */
.submit_button {
  width: 100%;
  margin-top: 10px;
  background: linear-gradient(45deg, #00eaff, #007bff);
  border: none;
  color: #fff;
  padding: 12px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.submit_button:hover {
  background: linear-gradient(45deg, #007bff, #00eaff);
  box-shadow: 0 0 15px #00eaff;
}

/* Footer */
footer {
  background: #111;
  padding: 20px;
  color: #fff;
  text-align: center;
  border-top: 1px solid #333;
}

.footer-social-icons a {
  color: #fff;
  transition: color 0.3s, text-shadow 0.3s;
}

.footer-social-icons a:hover {
  color: #00eaff;
  text-shadow: 0 0 8px #00eaff;
}