:root {
  --bg: #0c1210;
  --bg-elevated: #141c19;
  --border: #243328;
  --text: #e6f0ea;
  --text-muted: #8fa897;
  --accent: #3cb878;
  --accent-dim: #2a8f5c;
  --danger: #c74a4a;
  --radius: 12px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: radial-gradient(ellipse 120% 80% at 50% -20%, #1a3026 0%, var(--bg) 55%);
  color: var(--text);
  line-height: 1.55;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(12, 18, 16, 0.92);
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-dim) 100%);
  box-shadow: 0 4px 16px rgba(60, 184, 120, 0.25);
}

.brand-text h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.subtitle {
  margin: 0.2rem 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.pill {
  font-size: 0.75rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.layout {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}

.card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.intro p {
  margin: 0 0 0.65rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.fine-print {
  font-size: 0.78rem !important;
  opacity: 0.92;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.dropzone:hover,
.dropzone:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(60, 184, 120, 0.06);
}

.dropzone-primary {
  margin: 0 0 0.35rem;
  font-weight: 600;
}

.dropzone-hint {
  margin: 0;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.label-upload-row {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.label-upload-row input[type="file"] {
  color: var(--text-muted);
}

.label-upload-row label {
  min-width: 8.5rem;
}

.preview-wrap {
  margin-top: 1rem;
  display: grid;
  gap: 0.7rem;
  justify-items: start;
}

.preview-stage {
  position: relative;
  display: inline-block;
  max-width: 100%;
}

#preview-image {
  display: block;
  max-width: 100%;
  max-height: 520px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

#overlay-canvas {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
  border-radius: 8px;
}

.preview-wrap .btn-ghost {
  margin-top: 0;
}

.actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.btn {
  font: inherit;
  padding: 0.55rem 1.25rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background: linear-gradient(145deg, var(--accent), var(--accent-dim));
  color: #fff;
  font-weight: 600;
}

.btn-primary:not(:disabled):hover {
  filter: brightness(1.06);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.status {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.status.error {
  color: var(--danger);
}

.result-meta {
  margin: 0 0 0.8rem;
  color: var(--text-muted);
  font-size: 0.86rem;
}

.result-list {
  display: grid;
  gap: 0.9rem;
}

.result-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
  background: #101713;
}

.result-item-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.55rem;
}

.result-file {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.result-pred {
  font-size: 0.9rem;
  font-weight: 650;
  color: var(--accent);
}

.result-pred.ok {
  color: var(--accent);
}

.result-pred.ng {
  color: var(--danger);
}

.box-result-head {
  margin-bottom: 0.35rem;
}

.result-role-block {
  margin-bottom: 0.55rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
}

.result-role {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.result-ref-val {
  font-size: 0.88rem;
  font-weight: 600;
  color: #9ec5e8;
}

.result-pred-main {
  font-size: 0.95rem;
  font-weight: 650;
  color: var(--accent);
}

.det-conf-hint {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.top5-caption {
  margin: 0.35rem 0 0.45rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.result-item-error .result-pred {
  color: var(--danger);
}

.result-error-msg {
  margin: 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.result-main {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 1.25rem;
  align-items: baseline;
  margin-bottom: 1rem;
}

.result-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.pred-class {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--accent);
}

.pred-conf {
  font-size: 1.1rem;
  font-weight: 600;
}

.top5-title {
  margin: 0 0 0.65rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.top5-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.top5-item {
  display: grid;
  grid-template-columns: 1fr 3.2rem;
  gap: 0.5rem;
  align-items: center;
}

.top5-name {
  font-size: 0.88rem;
}

.top5-bar-wrap {
  grid-column: 1 / -1;
  height: 8px;
  background: #0a100e;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.top5-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  border-radius: 999px;
  transition: width 0.35s ease;
}

.top5-pct {
  text-align: right;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hidden {
  display: none !important;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 1.5rem 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.site-footer p {
  margin: 0;
  max-width: 720px;
  margin-inline: auto;
}

@media (max-width: 560px) {
  .brand-text h1 {
    font-size: 1.15rem;
  }

  .result-main {
    grid-template-columns: 1fr;
  }
}