body {
  font-family: 'Helvetica Neue', Arial, sans-serif;
  background: #f0f4f8;
  margin: 0;
  padding: 1rem;
  font-size: 1rem;
  margin: 0;
}

.container {
  max-width: 800px;
  margin: 50px auto;
  padding: 10px 16px;
  background: white;
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

h1, h2 {
  text-align: center;
  color: #333;
}

input[type="file"]::file-selector-button {
  display: block;
  background-color: #4CAF50;
  color: white;
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-size: 1rem;
}

.custom-file-upload {
  border: 3px solid #ccc;
  display: block;
  margin: 20px auto;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: 8px;
  font-size: 1.25rem;
 }

button {
  display: block;
  margin: 20px auto;
  background-color: #4CAF50;
  color: white;
  padding: 10px 16px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  font-size: 1.5em;
}

button:hover {
  background-color: #45a049;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
}

.gallery img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
  object-fit: cover;
}

.spinner-grow,
.spinner-border {
  display: inline-block;
  width: var(--bs-spinner-width);
  height: var(--bs-spinner-height);
  vertical-align: var(--bs-spinner-vertical-align);
  border-radius: 50%;
  animation: var(--bs-spinner-animation-speed) linear infinite var(--bs-spinner-animation-name);
}

@keyframes spinner-border {
  to {
    transform: rotate(360deg) /* rtl:ignore */;
  }
}
.spinner-border {
  --bs-spinner-width: 2rem;
  --bs-spinner-height: 2rem;
  --bs-spinner-vertical-align: -0.125em;
  --bs-spinner-border-width: 0.25em;
  --bs-spinner-animation-speed: 0.75s;
  --bs-spinner-animation-name: spinner-border;
  border: var(--bs-spinner-border-width) solid #4CAF50;
  border-right-color: transparent;
}

.spinner-border-sm {
  --bs-spinner-width: 1rem;
  --bs-spinner-height: 1rem;
  --bs-spinner-border-width: 0.2em;
}

@keyframes spinner-grow {
  0% {
    transform: scale(0);
  }
  50% {
    opacity: 1;
    transform: none;
  }
}
.spinner-grow {
  --bs-spinner-width: 2rem;
  --bs-spinner-height: 2rem;
  --bs-spinner-vertical-align: -0.125em;
  --bs-spinner-animation-speed: 0.75s;
  --bs-spinner-animation-name: spinner-grow;
  background-color: #4CAF50;
  opacity: 0;
}

.spinner-grow-sm {
  --bs-spinner-width: 1rem;
  --bs-spinner-height: 1rem;
}

@media (prefers-reduced-motion: reduce) {
  .spinner-border,
.spinner-grow {
    --bs-spinner-animation-speed: 1.5s;
  }
}

.visually-hidden,
.visually-hidden-focusable:not(:focus):not(:focus-within) {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}