:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #f6f7fb;
  color: #1f2937;
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

h1 {
  margin: 0 0 0.25rem;
  font-size: 1.8rem;
}

.subtitle {
  margin: 0 0 1.5rem;
  color: #4b5563;
}

.page-nav {
  display: flex;
  gap: 0.6rem;
  margin: 0 0 1rem;
}

.page-nav a {
  text-decoration: none;
  color: #1d4ed8;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  font-weight: 600;
}

.page-nav a[aria-current="page"] {
  background: #dbeafe;
}

.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.label {
  display: inline-block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

input[type="file"] {
  display: block;
  width: 100%;
  margin-bottom: 0.75rem;
}

#batchInput {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.drop-zone {
  width: 100%;
  border: 2px dashed #93c5fd;
  border-radius: 10px;
  background: #f8fbff;
  padding: 1rem;
  margin-bottom: 0.75rem;
  text-align: center;
  cursor: pointer;
}

.drop-zone.drag-active {
  border-color: #2563eb;
  background: #eff6ff;
}

.drop-zone-title {
  margin: 0 0 0.2rem;
  font-weight: 700;
}

.drop-zone-subtitle {
  margin: 0;
  color: #4b5563;
}

.preview-wrap {
  width: 100%;
  min-height: 240px;
  border: 1px dashed #cbd5e1;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #f8fafc;
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.preview-wrap img {
  width: 100%;
  max-height: 360px;
  object-fit: contain;
}

#placeholderText {
  color: #6b7280;
}

button {
  border: none;
  border-radius: 8px;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  font-weight: 600;
  background: #2563eb;
  color: #fff;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.status {
  margin-top: 0.6rem;
  color: #374151;
}

.top-result {
  font-weight: 700;
  margin: 0.5rem 0 0.75rem;
}

.case-writeup {
  margin: 0 0 0.85rem;
  color: #374151;
  line-height: 1.45;
}

.labels {
  display: grid;
  gap: 0.45rem;
}

.prediction-item {
  display: grid;
  gap: 0.45rem;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 0.55rem 0.65rem;
  background: #fff;
}

.prediction-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
}

.prediction-name {
  font-weight: 600;
}

.confidence-bar-track {
  width: 100%;
  height: 9px;
  border-radius: 999px;
  background: #e5e7eb;
  overflow: hidden;
}

.confidence-bar-fill {
  height: 100%;
  background: #2563eb;
  border-radius: 999px;
  transition: width 200ms ease;
}

.batch-results {
  display: grid;
  gap: 0.9rem;
}

.batch-card {
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  padding: 0.8rem;
  background: #fff;
  display: grid;
  gap: 0.7rem;
}

.batch-card-header h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.batch-card-header p {
  margin: 0;
  color: #374151;
}

.batch-preview {
  width: 100%;
  max-height: 280px;
  object-fit: contain;
  border-radius: 8px;
  border: 1px solid #e5e7eb;
  background: #f8fafc;
}