body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-image: url('bg_img.jpg'); /* Use correct path */
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  /* Remove background-attachment fixed to stop moving */
  background-attachment: scroll;
  filter: brightness(0.9) opacity(0.85);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  text-align: center;
  margin: 0;
  padding: 0;
}


body {
    background-size: cover;
    /* Removed animation to keep background stable */
    /* animation: gradientShift 15s ease infinite; */
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}


.main-container {
  max-width: 600px;
  width: 90%;
  background: rgba(211, 211, 211, 0.65);
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 15px 2px #00f0ff;
  border: 2px solid #00f0ff;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

h1, h2 {
  color: #343a40;
}

input {
  padding: 12px;
  margin: 10px;
  width: 90%;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

button {
  background-color: #007bff;
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

.seat {
  width: 30px;
  height: 30px;
  margin: 5px;
  display: inline-block;
  background-color: green;
  border-radius: 5px;
  transition: transform 0.3s ease, background-color 0.3s ease;
  cursor: pointer;
}

.seat:hover {
  transform: scale(1.2); /* Slightly bigger on hover */
}

.seat.occupied {
  background-color: red !important; /* Occupied seat */
}

.view-button {
  margin-top: 20px;
  background-color: #28a745;
  padding: 12px 20px;
  color: white;
  border-radius: 6px;
  text-decoration: none;
  display: inline-block;
}

.view-button:hover {
  background-color: #1e7e34;
}

.header-icon {
  width: 250px;
  height: 150px;
  margin: 0 auto 20px auto;
  display: block;
  border-left: 5px solid #00f0ff;
  border-right: 5px solid #00f0ff;
  box-shadow: 0 0 10px 2px #00f0ff;
  border-radius: 10px;
  margin-bottom: 15px;
}

#confirmationMessage {
  margin-top: 20px;
  font-weight: bold;
  color: #333;
}

.seat-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(30px, 1fr));
  gap: 8px;
  margin-top: 20px;
}

.seat {
  width: 30px;
  height: 30px;
  border-radius: 4px;
  display: inline-block;
}

.free {
  background-color: #00cf1f;
}

.occupied {
  background-color: #dc3545;
}

.refresh-note {
  font-size: 0.9em;
  color: #666;
  margin-top: 20px;
}

/* Popup overlay styles */
.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.4s ease forwards;
}

/* Popup content box */
.popup-content {
  background-color: rgba(255, 255, 255, 0.3);
  padding: 30px 40px;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  text-align: center;
  max-width: 300px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fadeIn 0.6s ease forwards;
}

/* Popup button */
.popup-button {
  background-color: #007bff;
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 20px;
}

.popup-button:hover {
  background-color: #0056b3;
}

/* Fade in animation */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}