style.css

/* Light mauve / blue gentle theme */

/* Core variables */
:root {
  --bg-gradient: linear-gradient(135deg, #e3e9ff 0%, #d4dafc 35%, #c7d3fa 65%, #c0cef5 100%);
  --panel-bg: rgba(255,255,255,0.55);
  --panel-border: rgba(160,170,200,0.55);
  --text-color: #1d2b3a;
  --accent: #1d6fd4;
  --accent-hover: #3d8af0;
  --legend-bg: rgba(255,255,255,0.70);
  --legend-border: rgba(140,160,190,0.55);
  --scrollbar-bg: #d0d9f2;
  --scrollbar-thumb: #9ab4e6;
  --scrollbar-thumb-hover: #799dd9;
  --radius: 18px;
  --transition: 0.28s cubic-bezier(.4,.14,.3,1);
  --font-stack: 'Inter','Segoe UI',system-ui,sans-serif;
}

body, .gradio-container {
  background: var(--bg-gradient) !important;
  font-family: var(--font-stack);
  color: var(--text-color);
  min-height: 100vh;
  margin: 0;
  padding-bottom: 40px;
  transition: background 0.6s ease, color 0.4s ease;
  -webkit-font-smoothing: antialiased;
}

/* Floating hero */
.hero-banner {
  position: relative;
  width: 100%;
  border-radius: 24px;
  margin: 18px 0 30px 0;
  background: linear-gradient(125deg, #6289ff, #7d9dff 40%, #8bb1ff 75%);
  box-shadow: 0 14px 40px -10px rgba(60,85,140,0.45), 0 4px 18px -6px rgba(60,85,140,0.35);
  padding: 34px 30px;
  overflow: hidden;
}

.hero-banner:before,
.hero-banner:after {
  content:"";
  position:absolute;
  width:240px;
  height:240px;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.55), transparent 70%);
  top:-60px;
  left:-60px;
  filter: blur(10px);
  opacity: 0.55;
  pointer-events:none;
}
.hero-banner:after {
  top:auto;
  left:auto;
  bottom:-70px;
  right:-40px;
  background: radial-gradient(circle at 70% 70%, rgba(255,255,255,0.45), transparent 65%);
  opacity:0.45;
}

.floating {
  animation: floatY 6.5s ease-in-out infinite;
}

@keyframes floatY {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: #ffffff;
  margin: 0;
  line-height: 1.15;
  text-shadow: 0 4px 18px rgba(0,0,0,0.35);
  position: relative;
  z-index: 2;
}

/* Tagline forced white */
.intro-tagline {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin: 0 6px 24px 6px;
  color: #ffffff !important;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
  background: rgba(255,255,255,0.10);
  padding: 10px 16px;
  border-radius: 14px;
  display: inline-block;
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 24px -10px rgba(60,85,140,0.50);
}

/* Panels */
.panel.glass {
  background: var(--panel-bg) !important;
  border: 1px solid var(--panel-border) !important;
  backdrop-filter: blur(14px) saturate(160%);
  border-radius: var(--radius) !important;
  padding: 20px !important;
  box-shadow: 0 10px 30px -12px rgba(70,80,120,0.45);
  position: relative;
  overflow: hidden;
}

.panel.glass:before {
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(circle at 80% 10%, rgba(255,255,255,0.35), transparent 55%),
    radial-gradient(circle at 15% 85%, rgba(255,255,255,0.25), transparent 60%);
  pointer-events:none;
  opacity:0.55;
}

#view-mode-radio label {
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(140,160,190,0.6);
  border-radius: 12px;
  padding: 7px 12px;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  font-size: 0.85rem;
  color: #2d3f55;
  box-shadow: 0 2px 8px -4px rgba(80,100,140,0.35);
}
#view-mode-radio label:hover {
  background: rgba(255,255,255,0.75);
}
#view-mode-radio input:checked + label {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  box-shadow: 0 4px 15px -6px rgba(30,70,130,0.65);
}

#alpha-slider input[type=range] {
  accent-color: var(--accent);
}

#run-btn, #clear-btn {
  font-weight: 600;
  border-radius: 16px !important;
  padding: 12px 20px !important;
  letter-spacing: 0.6px;
  transition: var(--transition);
  border: none !important;
  font-size: 0.9rem;
}

#run-btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover)) !important;
  color: #fff !important;
  box-shadow: 0 8px 24px -10px rgba(30,70,130,0.65);
}
#run-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px -10px rgba(30,70,130,0.75);
}

#clear-btn {
  background: rgba(200,60,60,0.15) !important;
  color: #9d2e2e !important;
  border: 1px solid rgba(200,60,60,0.35) !important;
  box-shadow: 0 4px 16px -10px rgba(200,60,60,0.55);
}
#clear-btn:hover {
  background: rgba(200,60,60,0.30) !important;
  color: #6a1212 !important;
  transform: translateY(-2px);
}

.download-anchor {
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--accent);
  display: inline-block;
  margin-top: 10px;
  transition: var(--transition);
  letter-spacing: 0.5px;
}
.download-anchor:hover {
  color: var(--accent-hover);
  text-shadow: 0 0 6px rgba(120,170,255,0.55);
}

/* Legend */
.legend-wrapper {
  margin-top: 14px;
  background: var(--legend-bg);
  border: 1px solid var(--legend-border);
  border-radius: 16px;
  padding: 14px 16px 12px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  animation: fadeIn 0.5s ease;
  box-shadow: 0 10px 28px -14px rgba(70,80,120,0.55);
}

.legend-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-weight: 600;
  letter-spacing: 0.6px;
  color: var(--text-color);
  margin-bottom: 6px;
}

.legend-toggle-btn {
  background: rgba(255,255,255,0.55);
  border: 1px solid rgba(130,150,180,0.55);
  padding: 4px 11px;
  cursor: pointer;
  border-radius: 10px;
  font-size: 0.78rem;
  color: #2d3f55;
  transition: var(--transition);
  box-shadow: 0 3px 12px -6px rgba(60,80,120,0.35);
}
.legend-toggle-btn:hover {
  background: rgba(255,255,255,0.8);
  transform: translateY(-2px);
}

.legend-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 4px;
  transition: max-height 0.5s ease;
}

.legend-body.collapsed {
  max-height: 0;
  overflow: hidden;
  padding: 0;
  margin: 0;
}

.legend-item {
  display: flex;
  gap: 14px;
  align-items: center;
  background: rgba(255,255,255,0.55);
  padding: 8px 12px;
  border-radius: 14px;
  border: 1px solid rgba(130,150,180,0.45);
  position: relative;
  backdrop-filter: blur(6px);
  transition: var(--transition);
  box-shadow: 0 4px 16px -10px rgba(60,80,120,0.4);
}

.legend-item:hover {
  background: rgba(255,255,255,0.75);
  transform: translateY(-3px);
}

.legend-color {
  width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--c);
  box-shadow: 0 4px 18px -8px var(--c);
  border: 2px solid rgba(255,255,255,0.7);
  position: relative;
}

.legend-color:after {
  content:"";
  position:absolute;
  inset:0;
  border-radius: 9px;
  background: linear-gradient(140deg, rgba(255,255,255,0.40), transparent 70%);
  mix-blend-mode: overlay;
}

.legend-meta {
  display: flex;
  flex-direction: column;
  font-size: 0.78rem;
  line-height: 1.1rem;
  letter-spacing: 0.4px;
}

.legend-name {
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  color:#2e3f58;
}

.legend-stats {
  display: flex;
  gap: 12px;
  font-size: 0.68rem;
  opacity: 0.85;
  color:#415671;
}

.legend-count { color: #9b6c10; }
.legend-pct { color: #115f9d; }

.legend-empty {
  opacity: 0.65;
  font-style: italic;
  font-size: 0.9rem;
  padding: 4px;
  color:#2d3f55;
}

/* Scrollbars */
.legend-body::-webkit-scrollbar {
  width: 9px;
}
.legend-body::-webkit-scrollbar-track {
  background: var(--scrollbar-bg);
  border-radius: 10px;
}
.legend-body::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.4);
}
.legend-body::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* Images */
.gradio-image img, .gradio-image canvas {
  border-radius: 16px !important;
  box-shadow: 0 10px 32px -14px rgba(70,80,120,0.55);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Disabled slider style */
#alpha-slider input[disabled] {
  filter: grayscale(75%);
  cursor: not-allowed;
  opacity: 0.6;
}

/* Markdown headings */
.markdown-body h4, .markdown-body h3, .markdown-body h2 {
  color: #2d3f55;
}

/* Links */
a { color: var(--accent); }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* Responsive */
@media (max-width: 980px) {
  .hero-banner { padding: 28px 22px; }
  .hero-title { font-size: 1.55rem; }
  #run-btn, #clear-btn { width: 100%; }
  .legend-body { max-height: 200px; }
}

#bg-opacity-slider input[type=range] {
  accent-color: var(--accent);
}

/* Disabled range (already present for alpha; ensure both look consistent) */
#bg-opacity-slider input[disabled] {
  filter: grayscale(75%);
  cursor: not-allowed;
  opacity: 0.55;
}