:root {
  --primary: #2563eb;
  --danger: #dc2626;
  --border: #d7dce3;
  --muted: #66707e;
  --bg: #f5f7fa;
  --card: #ffffff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: #1c2733;
  font-size: 16px;
}
.app-header {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
}
.app-header h1 { margin: 0; font-size: 20px; }
.warning {
  background: #fef3c7;
  border-bottom: 1px solid #f59e0b;
  padding: 10px 16px;
  font-size: 14px;
}
.tabs {
  display: flex;
  gap: 4px;
  padding: 8px 12px 0;
}
.tab {
  flex: 1;
  padding: 10px 4px;
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  background: #e8edf3;
  font-size: 15px;
  cursor: pointer;
}
.tab.active { background: var(--card); font-weight: 600; }
main {
  background: var(--card);
  margin: 0 12px 24px;
  border: 1px solid var(--border);
  border-radius: 0 0 8px 8px;
  padding: 16px;
  min-height: 50vh;
}
.view.hidden, .hidden { display: none !important; }
.row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0;
  flex-wrap: wrap;
}
.row label { font-weight: 600; }
select, input[type="text"] {
  font-size: 16px;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  max-width: 100%;
}
input[type="text"] { flex: 1; min-width: 160px; }
.btn {
  font-size: 15px;
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: inline-block;
}
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn-sub { background: transparent; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-wide { width: 100%; padding: 13px; font-size: 16px; }
.card-list { display: flex; flex-direction: column; gap: 8px; }
.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  background: #fff;
}
.record-card { cursor: pointer; }
.record-card:hover { border-color: var(--primary); }
.record-card .title { font-weight: 600; margin: 0 0 4px; }
.meta { color: var(--muted); font-size: 13px; margin: 0; }
.badge {
  display: inline-block;
  background: #e3ecfd;
  color: var(--primary);
  border-radius: 10px;
  padding: 1px 8px;
  font-size: 12px;
  margin-right: 6px;
}
.folder-card { display: flex; align-items: center; gap: 8px; }
.folder-card .name { flex: 1; font-weight: 600; }
.detail-card h2 { margin: 4px 0 6px; font-size: 20px; }
.detail-card h3 { margin: 18px 0 6px; font-size: 16px; border-left: 4px solid var(--primary); padding-left: 8px; }
.pre-wrap { white-space: pre-wrap; word-break: break-word; }
.transcript { line-height: 1.7; background: var(--bg); border-radius: 6px; padding: 10px 12px; }
.subtabs { display: flex; gap: 6px; margin-bottom: 12px; }
.subtab {
  flex: 1;
  padding: 9px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #eef2f7;
  font-size: 15px;
  cursor: pointer;
}
.subtab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.file-label {
  display: block;
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 26px 12px;
  text-align: center;
  cursor: pointer;
  margin: 8px 0;
}
.file-label input { display: none; }
.rec-timer { font-variant-numeric: tabular-nums; font-size: 18px; font-weight: 600; }
.error { color: var(--danger); font-size: 14px; }
.muted { color: var(--muted); font-size: 14px; }
.actions { margin-top: 20px; }
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 28, 40, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 20px;
}
.overlay-box {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
  text-align: center;
  max-width: 340px;
}
.spinner {
  width: 38px; height: 38px;
  border: 4px solid #dbe4f0;
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 14px;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  background: #1c2733;
  color: #fff;
  padding: 10px 18px;
  border-radius: 20px;
  font-size: 14px;
  z-index: 60;
}
audio { width: 100%; margin-top: 8px; }