:root{--bg:#0b0f13;--fg:#eaf0f6;--muted:#9aa7b2;--accent:#6aa7ff;--card:#12171d;--border:#1e2630}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif;background:var(--bg);color:var(--fg);line-height:1.6}
.container{max-width:1000px;margin:0 auto;padding:24px}
.header h1{margin:0 0 8px}
.header p{margin:0;color:var(--muted)}
.logo-link{display:inline-flex;align-items:center;gap:10px;margin-bottom:10px;text-decoration:none;color:inherit}
.logo-img{height:36px;width:auto;display:block}
.logo-text{color:var(--fg);font-weight:700}
.main{padding-top:8px}
.top-nav a{color:#fff;text-decoration:none;font-weight:600}
.top-nav a:hover{text-decoration:underline}
.controls{margin:16px 0;display:flex;gap:12px;align-items:center}
select{background:var(--card);color:var(--fg);border:1px solid var(--border);padding:10px 12px;border-radius:8px}
.uploader{position:relative;border:2px dashed var(--border);border-radius:12px;padding:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;background:var(--card)}
/* Make file input cover the dropzone so native click always works */
.uploader input{position:absolute;inset:0;opacity:0;cursor:pointer;display:block;width:100%;height:100%}
.uploader-instructions{display:flex;flex-direction:column;align-items:center;color:var(--muted)}
.uploader.drag{border-color:var(--accent);background:#101826}

/* Dropzone styling for color change page */
.dropzone {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: var(--card);
    margin-bottom: 20px;
    transition: all 0.2s ease;
}

.dropzone:hover {
    border-color: var(--accent);
    background: #101826;
}

.dropzone.drag {
    border-color: var(--accent);
    background: #101826;
}

.dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--muted);
    text-align: center;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.click-here {
    color: var(--accent);
    text-decoration: underline;
    cursor: pointer;
}

.file-info {
    font-size: 12px;
    margin-top: 8px;
    opacity: 0.8;
}
button, .btn{background:var(--accent);color:#001633;border:none;padding:12px 16px;border-radius:10px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-block}
.btn.secondary{background:transparent;color:var(--fg);border:1px solid var(--border)}
button[disabled]{opacity:.5;cursor:not-allowed}
.preview{margin-top:24px}
.preview-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:900px){.preview-grid{grid-template-columns:1fr 1fr}}
.checkerboard{background:conic-gradient(#cfd8e3 25%,transparent 0 50%,#cfd8e3 0 75%,transparent 0) 0 0/24px 24px; padding:12px;border-radius:12px}
/* Remove padding for color-specific pages after processing */
body[data-target-color] .checkerboard.processed{padding:0 !important}
.preview img{width:100%;height:auto;border-radius:8px;display:block}
.actions{margin-top:12px;display:flex;gap:12px;flex-wrap:wrap}
.actions .btn{flex:1;min-width:120px}
.actions a.btn{text-decoration:none;display:inline-block;text-align:center;cursor:pointer}
.actions a.btn:hover{text-decoration:none}
.seo{margin-top:40px;color:var(--muted)}
.seo a{color:#fff;text-decoration:none}
.seo a:hover{text-decoration:underline;color:var(--accent)}
.footer{border-top:1px solid var(--border);margin-top:40px;color:var(--muted)}

.category-buttons{display:flex;gap:8px}
.cat-btn{background:transparent;color:var(--fg);border:1px solid var(--border);padding:10px 14px;border-radius:8px;cursor:pointer}
.cat-btn.active{background:var(--accent);color:#001633;border-color:var(--accent)}
.prompt{color:var(--muted);margin-top:8px}

.seo-links{max-width:1000px;margin:24px auto 0;display:flex;flex-wrap:wrap;gap:12px;padding:0 24px}
.seo-links a{color:var(--muted);text-decoration:none;border:1px dashed var(--border);padding:8px 10px;border-radius:8px}
.seo-links a:hover{color:var(--fg);border-color:var(--accent)}

.palette{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.swatch{width:34px;height:34px;border-radius:50%;border:2px solid var(--border);background:var(--c);cursor:pointer;transition:transform .1s ease, box-shadow .1s ease; box-shadow:0 0 0 2px transparent} .swatch:hover{transform:scale(1.06)} .swatch.active{box-shadow:0 0 0 2px var(--accent)}
.swatch.active{outline:2px solid var(--accent);}
#custom-color{width:36px;height:28px;border:1px solid var(--border);background:var(--card);color:var(--fg);border-radius:6px}

/* Color Change Page Styles */
.color-controls {
    margin: 20px 0;
    padding: 20px;
    background: var(--card);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.control-group {
    margin: 16px 0;
}

.control-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--fg);
}

.slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg);
}

.color-presets {
    display: flex;
    gap: 12px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.color-preset {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.color-preset:hover {
    transform: scale(1.05);
    border-color: var(--accent);
}

.color-preset.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent);
}

.color-preset::after {
    content: attr(data-name);
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: var(--muted);
    white-space: nowrap;
}

/* Enhanced category buttons for color change */
.cat-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 8px;
    margin: 12px 0;
}

.cat-btn {
    background: transparent;
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 12px 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.cat-btn:hover {
    background: var(--card);
    border-color: var(--accent);
}

.cat-btn.active {
    background: var(--accent);
    color: #001633;
    border-color: var(--accent);
}

/* Preview improvements for color change */
.preview-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 768px) {
    .preview-container {
        grid-template-columns: 1fr 1fr;
    }
}

.preview-item h3 {
    margin: 0 0 12px;
    font-size: 18px;
    color: var(--fg);
}

.image-container {
    position: relative;
    background: var(--card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.image-container img {
    width: 100%;
    height: auto;
    display: block;
}

.process-prompt {
    padding: 40px 20px;
    text-align: center;
    color: var(--muted);
    font-style: italic;
}

.result-actions {
    position: absolute;
    bottom: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
}

.download-btn, .reset-btn {
    padding: 8px 12px;
    font-size: 14px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    font-weight: 600;
}

.download-btn {
    background: var(--accent);
    color: #001633;
    border: none;
}

.download-btn:hover {
    background: #4f46e5;
    color: white;
    text-decoration: none;
}

.reset-btn {
    background: transparent;
    color: var(--fg);
    border: 1px solid var(--border);
}

.reset-btn:hover {
    background: var(--card);
    border-color: var(--accent);
}

/* Homepage Hero Features */
.hero-features {
  margin: 40px 0 60px;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-bottom: 40px;
}

@media(min-width: 800px){
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media(min-width: 1100px){
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  border-color: var(--accent);
}

.feature-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--accent), #4f46e5);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.feature-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 16px;
  color: var(--fg);
}

.feature-card p {
  color: var(--muted);
  margin: 0 0 24px;
  line-height: 1.6;
}

.feature-btn {
  display: inline-block;
  background: var(--accent);
  color: #001633;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

.feature-btn:hover {
  background: #4f46e5;
  color: white;
  transform: translateY(-2px);
}

/* Make entire hero card clickable via stretched link */
.feature-card .stretched-link {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: 16px;
  /* Prevent stealing focus styles from visible button */
  color: inherit;
  text-decoration: none;
}

.feature-card .feature-btn {
  position: relative;
  z-index: 2;
}

/* Quick Colors Section */
.quick-colors {
  margin: 60px 0;
}

.quick-colors h2 {
  text-align: center;
  margin-bottom: 32px;
  font-size: 28px;
  color: var(--fg);
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  max-width: 800px;
  margin: 0 auto;
}

.color-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.color-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  border-color: var(--accent);
}

.color-swatch {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 3px solid var(--border);
  transition: all 0.3s ease;
}

.color-swatch.white { background: #ffffff; }
.color-swatch.blue { background: #3b82f6; }
.color-swatch.black { background: #000000; }
.color-swatch.yellow { background: #fbbf24; }
.color-swatch.orange { background: #f97316; }

.color-card:hover .color-swatch {
  transform: scale(1.1);
  border-color: var(--accent);
}

.color-card span {
  color: var(--fg);
  font-weight: 600;
  font-size: 14px;
}

/* SEO Content */
.seo-content {
  margin: 60px 0;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.seo-content h2 {
  font-size: 32px;
  margin-bottom: 24px;
  color: var(--fg);
  text-align: center;
}

.seo-content h3 {
  font-size: 24px;
  margin: 40px 0 20px;
  color: var(--fg);
}

.seo-content p {
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.capabilities {
  display: grid;
  gap: 24px;
  margin: 32px 0;
}

.capability {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
}

.capability h4 {
  font-size: 18px;
  margin: 0 0 12px;
  color: var(--fg);
}

.capability p {
  margin: 0;
  color: var(--muted);
}

.benefits {
  list-style: none;
  padding: 0;
  margin: 24px 0;
}

.benefits li {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
}

.benefits li:last-child {
  border-bottom: none;
}

.benefits strong {
  color: var(--fg);
}

/* FAQ Section */
.faq-section {
  margin: 60px 0;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.faq-section h2 {
  text-align: center;
  font-size: 28px;
  margin-bottom: 40px;
  color: var(--fg);
}

.faq-grid {
  display: grid;
  gap: 16px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  color: var(--fg);
  background: transparent;
  border: none;
  list-style: none;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--accent);
  transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item p {
  padding: 0 24px 20px;
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 768px) {
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .feature-card {
    padding: 24px;
  }
  
  .color-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .seo-content h2 {
    font-size: 24px;
  }
  
  .seo-content h3 {
    font-size: 20px;
  }
}

/* Three Column Layout for Color Change Page */
.three-column-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin: 20px 0;
}

@media (min-width: 1200px) {
    .three-column-layout {
        grid-template-columns: 300px 1fr 1fr;
        gap: 30px;
    }
}

.controls-column {
    background: var(--card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
    height: fit-content;
}

.image-column {
    background: var(--card);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border);
    min-height: 400px;
}

.image-column h3 {
    margin: 0 0 16px;
    font-size: 18px;
    color: var(--fg);
    text-align: center;
}

.image-container {
    position: relative;
    background: var(--bg);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-container img {
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    object-fit: contain !important;
    display: block !important;
}

#result-img {
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    min-height: 400px !important;
    object-fit: contain !important;
    display: block !important;
}

#result-wrapper {
    width: 100% !important;
    height: auto !important;
}

#result-wrapper img {
    width: 100% !important;
    height: auto !important;
    max-height: none !important;
    min-height: 400px !important;
    object-fit: contain !important;
    display: block !important;
}

.upload-prompt, .process-prompt {
    text-align: center;
    color: var(--muted);
    padding: 40px 20px;
}

.upload-icon-large {
    font-size: 48px;
    margin-bottom: 16px;
}

.process-icon {
    font-size: 32px;
    margin-bottom: 12px;
}

.preset-buttons {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.preset-buttons h4 {
    margin: 0 0 12px;
    font-size: 14px;
    color: var(--fg);
}

.preset-btn {
    background: transparent;
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    margin: 4px;
    transition: all 0.2s ease;
}

.preset-btn:hover {
    background: var(--accent);
    color: #001633;
    border-color: var(--accent);
}

.preset-btn.active {
    background: var(--accent);
    color: #001633;
    border-color: var(--accent);
}

/* Process button styling for color change page */
.process-btn {
    background: var(--accent);
    color: #001633;
    border: none;
    padding: 12px 16px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    width: 100%;
    margin-top: 16px;
}

.process-btn:hover {
    background: #4f46e5;
    color: white;
}

.process-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Upscaling controls */
.upscale-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 16px 0;
}

.upscale-controls .control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.upscale-controls label {
    font-weight: 600;
    color: var(--fg);
    font-size: 14px;
}

.upscale-controls select {
    background: var(--card);
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 14px;
}

.upscale-controls select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(106, 167, 255, 0.2);
}

/* Responsive adjustments */
@media (max-width: 1199px) {
    .three-column-layout {
        grid-template-columns: 1fr;
    }
    
    .controls-column {
        order: 1;
    }
    
    .image-column:first-of-type {
        order: 2;
    }
    
    .image-column:last-of-type {
        order: 3;
    }
    
    .upscale-controls {
        grid-template-columns: 1fr;
    }
}