.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}
.main-container .page-title {
  font-size: 28px;
  margin-bottom: 4px;
}
.main-container .page-sub {
  color: #475569;
  margin-bottom: 16px;
}

.main-container .panel {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
.main-container .panel h2 {
  font-size: 20px;
  margin-bottom: 12px;
}

.main-container label {
  font-weight: 600;
  display: block;
  margin-bottom: 6px;
}
.main-container input:not([type="color"], [type="radio"], [type="checkbox"]),
.main-container select,
.main-container textarea {
  width: 100%;
  padding-top: 10px;
  padding-bottom: 10px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  background: #fff;
}
.main-container input[type="color"] {
  width: 100%;
  height: 40px; /* Adjust height for color input */
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 2px; /* Less padding for color input */
  cursor: pointer;
}
.main-container input[type="radio"],
.main-container input[type="checkbox"] {
  width: auto; /* Override full width for radios/checkboxes */
  margin-right: 8px;
}
.main-container .radio-label {
  display: inline-flex; /* Align radio button with text */
  align-items: center;
  font-weight: normal; /* Labels for radios typically not bold */
}
.main-container textarea {
  resize: vertical;
}

.main-container .grid-2,
.main-container .grid-3 {
  display: grid;
  gap: 12px;
}
.main-container .grid-2 {
  grid-template-columns: repeat(2, 1fr);
}
.main-container .grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 900px) {
  .main-container .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .main-container .grid-2,
  .main-container .grid-3 {
    grid-template-columns: 1fr;
  }
}

.main-container .row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.main-container .grow {
  flex: 1;
}

.main-container .btn {
  background: #2563eb;
  color: #fff;
  border: 0;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s ease, filter 0.2s ease;
}
.main-container .btn:hover {
  filter: brightness(0.95);
}
.main-container .btn.secondary {
  background: #64748b;
}
.main-container .btn.ghost {
  background: #e2e8f0;
  color: #111827;
}
.main-container .btn.danger {
  background: #ef4444;
}

.main-container .hint {
  color: #64748b;
  font-size: 12px;
  margin-top: 8px;
}

/* Favicon Generator Specific Styles */
.main-container .tool-layout {
  display: grid;
  grid-template-columns: 2fr 1fr; /* Controls on left, preview on right */
  gap: 20px;
  margin-top: 20px;
}

@media (max-width: 900px) {
  .main-container .tool-layout {
    grid-template-columns: 1fr; /* Stack panels on smaller screens */
  }
}

.controls-panel {
  /* No specific styling needed, just a container */
}

.main-container .preview-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start; /* Align preview to top */
  padding-top: 16px; /* Align with controls */
}

.main-container .favicon-preview-grid {
  display: flex;
  flex-direction: column;
  /* width: 100%; */
  max-width: 300px; /* Constrain preview grid size */
  margin-top: 10px;
  padding: 15px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  justify-items: center;
  align-items: center;
}

.main-container .preview-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 5px;
}

.main-container .preview-item canvas {
  border: 1px solid #cbd5e1;
  border-radius: 4px; /* Slight rounding for preview frames */
  background: #fff; /* Ensure white background for previews */
  image-rendering: pixelated; /* Helps small favicons look sharper */
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
}

.main-container .preview-item span {
  font-size: 0.8rem;
  color: #64748b;
}

.main-container .output-checkboxes label {
  display: flex;
  align-items: center;
  font-weight: normal;
}

.main-container .loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2em;
  color: #333;
  z-index: 10;
  border-radius: 8px;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}
.main-container .loading-overlay.show {
  opacity: 1;
}

/* Reusing .tool-seo styles */
.tool-seo {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #fafafa;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
  line-height: 1.6;
}

.tool-seo h2 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: #222;
  border-left: 4px solid #007bff;
  padding-left: 0.5rem;
}

.tool-seo h3 {
  font-size: 1.1rem;
  margin: 1rem 0 0.5rem;
  color: #333;
}

.tool-seo p {
  margin-bottom: 1rem;
  color: #444;
}

.tool-seo ul {
  list-style: disc inside;
  margin: 0.5rem 0 1.25rem;
  padding-left: 0.5rem;
}

.tool-seo li {
  margin-bottom: 0.5rem;
  color: #444;
}

/* Mobile responsiveness for SEO section */
@media (max-width: 600px) {
  .tool-seo {
    padding: 1rem;
  }

  .tool-seo h2 {
    font-size: 1.2rem;
  }

  .tool-seo h3 {
    font-size: 1rem;
  }
}