*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #1a1a2e;
  color: #e0e0e0;
  min-height: 100vh;
  padding: 24px 16px;
}

#app {
  max-width: 960px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 32px;
}

header h1 {
  font-size: 2rem;
  background: linear-gradient(135deg, #f093fb, #f5576c, #fda085);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

header p {
  color: #aaa;
  font-size: 0.95rem;
}

/* Upload */
.upload-area {
  border: 2px dashed #444;
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: #16213e;
}

.upload-area:hover, .upload-area.drag-over {
  border-color: #f5576c;
  background: #1e2a4a;
}

.upload-area input[type=file] { display: none; }

.upload-area label {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  color: #ccc;
}

.upload-icon { font-size: 3rem; }
.upload-hint { font-size: 0.8rem; color: #666; }

/* Canvas section */
#canvas-section { margin-top: 28px; }

#canvas-wrapper {
  position: relative;
  display: inline-block;
  width: 100%;
  cursor: crosshair;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}

#main-canvas, #overlay-canvas {
  display: block;
  width: 100%;
  height: auto;
}

#overlay-canvas {
  position: absolute;
  top: 0; left: 0;
  pointer-events: none;
}

/* Magnifier */
#magnifier {
  position: absolute;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.6);
  overflow: hidden;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

#mag-canvas {
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

#mag-crosshair {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 12px; height: 12px;
  border: 2px solid rgba(255,255,255,0.9);
  border-radius: 50%;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.5);
}

.hint {
  text-align: center;
  font-size: 0.85rem;
  color: #888;
  margin-top: 10px;
}

/* Result section */
#result-section {
  margin-top: 32px;
}

#color-display {
  display: flex;
  gap: 24px;
  align-items: stretch;
  background: #16213e;
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

#color-swatch {
  width: 120px;
  min-height: 120px;
  border-radius: 12px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  transition: background 0.3s;
}

#color-values {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  flex: 1;
}

.val-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.val-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #888;
  width: 40px;
  text-transform: uppercase;
}

.val-copy {
  cursor: pointer;
  transition: color 0.2s;
}
.val-copy:hover { color: #f5576c; }

/* Paint matches */
#paint-matches h2 {
  font-size: 1.2rem;
  margin-bottom: 16px;
  color: #eee;
}

#matches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.match-card {
  background: #16213e;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
  transition: transform 0.2s;
}

.match-card:hover { transform: translateY(-3px); }

.match-swatch {
  height: 70px;
  width: 100%;
}

.match-info {
  padding: 12px;
}

.match-brand {
  font-size: 0.7rem;
  color: #888;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.match-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: #eee;
  margin-bottom: 2px;
}

.match-code {
  font-size: 0.75rem;
  color: #aaa;
  font-family: monospace;
}

.match-delta {
  font-size: 0.7rem;
  color: #666;
  margin-top: 4px;
}

/* Utility */
.hidden { display: none !important; }

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: #f5576c;
  color: #fff;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 0.9rem;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 999;
}

.toast.show { opacity: 1; }

@media (max-width: 480px) {
  header h1 { font-size: 1.5rem; }
  #color-swatch { width: 80px; min-height: 80px; }
}