body {
    font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h2 {
    color: #333;
}

input[type="file"] {
    margin: 20px 0;
    padding: 10px;
    border: 2px solid #007bff;
    border-radius: 5px;
    background-color: #fff;
    transition: border-color 0.3s;
}

input[type="file"]:hover {
    border-color: #0056b3;
}

canvas {
    display: none;
}

img {
    max-width: 100%;
    margin-top: 10px;
    border: 2px solid #007bff;
    border-radius: 5px;
    transition: transform 0.3s;
}

img:hover {
    transform: scale(1.05);
}

#downloadBtn {
    margin-top: 10px;
    display: none;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

/* Custom fallback and tweaks for extra polish */
body {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
}

.upload-input::-webkit-file-upload-button {
  background: #2563eb;
  color: #fff;
  border: none;
  padding: 0.5em 1.2em;
  border-radius: 0.5em;
  cursor: pointer;
  transition: background 0.2s;
  font-weight: 500;
}
.upload-input::-webkit-file-upload-button:hover {
  background: #1d4ed8;
}

.upload-input::file-selector-button {
  background: #2563eb;
  color: #fff;
  border: none;
  padding: 0.5em 1.2em;
  border-radius: 0.5em;
  cursor: pointer;
  transition: background 0.2s;
  font-weight: 500;
}
.upload-input::file-selector-button:hover {
  background: #1d4ed8;
}

.result-image {
  max-width: 100vw;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  object-fit: contain;
}

.download-btn {
  text-decoration: none;
}

@media (max-width: 600px) {
  body {
    padding: 5px;
  }

  h2 {
    font-size: 1.2em;
  }

  #downloadBtn {
    width: 100%;
  }

  .container {
    padding: 0.5rem !important;
    margin-top: 0.5rem !important;
    margin-bottom: 0.5rem !important;
    border-radius: 0.5rem !important;
  }

  #sticky-settings, #settingsPanel {
    padding: 0.5rem !important;
    border-radius: 0 !important;
    box-shadow: none !important;
  }

  #settingsPanel .grid {
    grid-template-columns: 1fr !important;
    gap: 0.5rem !important;
  }

  #settingsPanel label, #settingsPanel select, #settingsPanel input {
    font-size: 0.85em !important;
  }

  #settingsPanel .mb-3, #settingsPanel .mb-2 {
    margin-bottom: 0.5rem !important;
  }

  #settingsPanel .text-xs {
    font-size: 0.75em !important;
  }
}
}

@media (max-width: 640px) {
  .container {
    padding: 1rem !important;
    margin-top: 1rem !important;
    margin-bottom: 1rem !important;
  }
  h1 {
    font-size: 1.25rem !important;
  }
  .footer {
    font-size: 0.9rem;
    padding: 0.5rem 0;
  }