#postureline-app {
  --bg: #f6f2ed;
  --ink: #1f1f1f;
  --muted: #6a645f;
  --accent: #c7502e;
  --line: #e0d8cf;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 20% 0%, #fff7ef 0%, var(--bg) 60%),
    linear-gradient(120deg, #f7efe7 0%, #f3ece5 100%);
  padding: 28px;
  border-radius: 16px;
  font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", system-ui, sans-serif;
}
#postureline-app * { box-sizing: border-box; }
#postureline-app header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}
#postureline-app h1 { margin: 0; font-size: 26px; letter-spacing: 0.4px; }
#postureline-app .sub {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}
#postureline-app .badge {
  border: 1px solid var(--line);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--muted);
  background: #fff;
}
#postureline-app p { margin: 0 0 18px; color: var(--muted); }
#postureline-app .summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin: 14px 0 18px;
}
#postureline-app .summary-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.04);
}
#postureline-app .rank {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
}
#postureline-app .grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 18px;
}
#postureline-app .card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 6px 16px rgba(0,0,0,0.05);
}
#postureline-app .row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
#postureline-app .canvas-wrap { width: 100%; border: 1px dashed var(--line); border-radius: 10px; overflow: hidden; background: #fff; }
#postureline-app canvas { width: 100%; height: auto; display: block; }
#postureline-app .score { font-size: 20px; font-weight: 700; }
#postureline-app .score.good { color: #1b7a59; }
#postureline-app .score.warn { color: #b0631b; }
#postureline-app .score.bad { color: #a63a2b; }
#postureline-app .label { font-size: 12px; color: var(--muted); }
#postureline-app ul { margin: 8px 0 0; padding: 0; list-style: none; }
#postureline-app li { margin: 6px 0; }
#postureline-app .tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: #f7e5dd;
  color: #9c3b22;
  font-size: 12px;
  margin-right: 6px;
}
#postureline-app .hint { font-size: 12px; color: var(--muted); }
#postureline-app .metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 8px;
  margin-top: 10px;
}
#postureline-app .metric-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  background: #fffdfb;
}
#postureline-app .metric-card .name { font-size: 12px; color: var(--muted); }
#postureline-app .metric-card .value { font-size: 14px; font-weight: 600; }
#postureline-app .metric-card.good { border-color: #bfe7d7; background: #f0fbf6; }
#postureline-app .metric-card.warn { border-color: #f1ddc3; background: #fff7ee; }
#postureline-app .metric-card.bad { border-color: #f2c7c0; background: #fff1ef; }
@media (max-width: 600px) {
  #postureline-app { padding: 16px; }
  #postureline-app header { flex-direction: column; align-items: flex-start; }
  #postureline-app h1 { font-size: 22px; }
  #postureline-app .badge { align-self: flex-start; }
  #postureline-app .row { align-items: flex-start; }
  #postureline-app input[type="file"] { width: 100%; }
  #postureline-app .card { padding: 12px; }
  #postureline-app .canvas-wrap { border-radius: 8px; }
}