:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #050914;
  color: #f3f6fb;
  --panel: rgba(13, 23, 39, .91);
  --panel2: #09111f;
  --line: #2a3a51;
  --line2: #1d2b40;
  --muted: #93a4ba;
  --accent: #38bdf8;
  --accent2: #a3e635;
  --warning: #facc15;
  --danger: #fb7185;
  --good: #4ade80;
}
* { box-sizing: border-box; }
html { background: #050914; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 92% -10%, rgba(30, 64, 175, .34), transparent 32rem),
    radial-gradient(circle at 5% 35%, rgba(8, 145, 178, .13), transparent 28rem),
    #050914;
}
header, main, footer { width: min(1160px, calc(100% - 28px)); margin-inline: auto; }
header { padding: max(30px, env(safe-area-inset-top)) 0 18px; display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; }
h1 { margin: 0; font-size: clamp(2rem, 7vw, 4.2rem); letter-spacing: -.058em; line-height: .98; }
h1 span { color: var(--accent); font-weight: 500; }
h2 { margin: 0 0 14px; font-size: 1.08rem; }
p { margin: 0; }
.eyebrow { color: var(--accent); text-transform: uppercase; letter-spacing: .15em; font-size: .71rem; font-weight: 750; }
.lead { margin-top: 10px; color: #c7d3e2; max-width: 790px; line-height: 1.65; }
.header-badges { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.badge, .method-badge { border: 1px solid var(--line); border-radius: 999px; padding: 7px 10px; color: var(--muted); font-size: .73rem; white-space: nowrap; }
.badge.version { color: #bfdbfe; }
.method-badge { color: #bae6fd; background: rgba(14, 116, 144, .15); }
main { display: grid; gap: 14px; }
.panel { background: var(--panel); border: 1px solid rgba(148,163,184,.17); box-shadow: 0 18px 55px rgba(0,0,0,.24); border-radius: 18px; padding: 19px; backdrop-filter: blur(13px); }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 13px; }
.section-heading h2 { margin-bottom: 4px; }
.section-heading p { color: var(--muted); font-size: .79rem; line-height: 1.45; }
.form-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 14px; }
label { display: grid; gap: 7px; color: #cbd5e1; font-size: .8rem; }
label span { display: flex; align-items: center; gap: 7px; }
input, select, button { font: inherit; }
input[type="number"], input[type="text"], select { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 11px; color: #f8fafc; background: #07101e; }
input[type="range"] { width: 100%; }
output { min-width: 3.2rem; color: var(--accent); font-variant-numeric: tabular-nums; }
button { border: 1px solid var(--line); background: #101c2d; color: #e5edf7; border-radius: 11px; padding: 10px 14px; cursor: pointer; font-weight: 680; }
button:hover:not(:disabled) { border-color: #4b6688; }
button.primary { background: #075985; border-color: #0284c7; }
button.accent { background: #3f6212; border-color: #65a30d; }
button.danger { background: #6b1830; border-color: #be3455; }
button.danger-ghost { color: #fda4af; }
button:disabled { cursor: not-allowed; opacity: .38; }
.button-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 16px; }
.button-row.compact { margin-top: 0; }
.hint { margin-top: 12px; color: var(--muted); line-height: 1.58; font-size: .82rem; }
.advanced { margin-top: 15px; border: 1px solid var(--line2); border-radius: 12px; background: rgba(3, 9, 18, .35); }
.advanced summary { cursor: pointer; padding: 12px; color: #cbd5e1; font-size: .84rem; }
.advanced-grid { padding: 0 12px 12px; }
.calibration-row { margin-top: 14px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; background: var(--panel2); border: 1px solid var(--line2); border-radius: 12px; padding: 11px; }
.calibration-row > div { display: grid; gap: 3px; margin-right: auto; }
.calibration-row strong { font-size: .82rem; }
.calibration-row span { color: var(--muted); font-size: .76rem; }
.file-button { display: inline-flex; width: auto; border: 1px solid var(--line); background: #101c2d; border-radius: 10px; padding: 9px 12px; cursor: pointer; font-weight: 650; }
.file-button input { position: absolute; inline-size: 1px; block-size: 1px; opacity: 0; }
.status { min-height: 52px; border-left: 3px solid var(--accent); background: #07101e; padding: 12px; border-radius: 8px; line-height: 1.55; }
.status.error { border-color: var(--danger); color: #fecdd3; }
.monitor-grid { display: grid; gap: 11px; margin-top: 12px; }
.monitor-block { background: rgba(3, 9, 18, .42); border: 1px solid var(--line2); border-radius: 12px; padding: 11px 12px; }
.monitor-label { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.monitor-label strong { font-size: .82rem; color: #dbe7f4; }
.monitor-label output { min-width: 0; text-align: right; font-size: .76rem; color: var(--accent); }
.monitor-help { margin-top: 7px; color: var(--muted); font-size: .72rem; line-height: 1.42; }
.progress-track, .meter-wrap { margin-top: 8px; height: 11px; border-radius: 999px; background: #020617; overflow: hidden; border: 1px solid rgba(148, 163, 184, .12); }
.progress-bar { height: 100%; width: 0%; background: linear-gradient(90deg, #0ea5e9, #a3e635); transition: width .18s ease; }
.meter { height: 100%; width: 0%; background: linear-gradient(90deg, #38bdf8 0 65%, #facc15 78%, #fb7185 95%); transition: width .07s linear; }
.meter-scale { display: flex; justify-content: space-between; margin-top: 4px; color: #64748b; font-size: .63rem; font-variant-numeric: tabular-nums; }
.quality-badge { border: 1px solid var(--line); border-radius: 999px; padding: 7px 11px; font-size: .75rem; }
.quality-badge.neutral { color: var(--muted); }
.quality-badge.good { color: var(--good); border-color: rgba(74,222,128,.55); }
.quality-badge.warn { color: var(--warning); border-color: rgba(250,204,21,.55); }
.quality-badge.bad { color: var(--danger); border-color: rgba(251,113,133,.55); }
.device-info { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 8px; margin: 14px 0 0; }
.device-info div { background: #07101e; border: 1px solid rgba(42,58,81,.45); border-radius: 10px; padding: 10px; }
dt { color: var(--muted); font-size: .69rem; }
dd { margin: 4px 0 0; font-size: .84rem; overflow-wrap: anywhere; }
.graph-heading { align-items: center; }
.export-buttons { justify-content: flex-end; }
.view-tabs { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px; }
.view-tab { white-space: nowrap; padding: 8px 12px; color: var(--muted); }
.view-tab.active { color: #f8fafc; background: #075985; border-color: #0284c7; }
.reference-row { display: flex; align-items: end; gap: 12px; margin: 4px 0 12px; flex-wrap: wrap; }
.reference-row label { width: min(340px, 100%); }
.reference-row > span { color: var(--muted); font-size: .75rem; padding-bottom: 9px; }
.canvas-wrap { width: 100%; height: min(64vh, 560px); min-height: 330px; background: #020713; border: 1px solid #1b2b41; border-radius: 13px; overflow: hidden; }
canvas { display: block; width: 100%; height: 100%; touch-action: none; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 14px; margin-top: 10px; min-height: 20px; color: #cbd5e1; font-size: .74rem; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-swatch { inline-size: 18px; block-size: 3px; border-radius: 4px; }
.summary { margin-top: 11px; color: #cbd5e1; font-variant-numeric: tabular-nums; line-height: 1.62; }
.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 8px; }
.summary-card { background: #07101e; border-radius: 10px; padding: 10px; }
.summary-card small { display: block; color: var(--muted); font-size: .68rem; }
.summary-card strong { display: block; margin-top: 3px; font-size: .9rem; }
.summary-note { margin-top: 10px; color: var(--muted); font-size: .78rem; }
.saved-list { display: grid; gap: 8px; }
.saved-item { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; background: #07101e; border: 1px solid rgba(42,58,81,.45); padding: 10px; border-radius: 10px; }
.saved-item small { display: block; color: var(--muted); margin-top: 3px; line-height: 1.35; }
.saved-item button { padding: 6px 9px; color: #fda4af; }
.empty { color: var(--muted); padding: 8px 0; }
.notes-panel ul { color: #cbd5e1; margin: 0; padding-left: 1.2rem; line-height: 1.68; }
footer { padding: 20px 0 max(28px, env(safe-area-inset-bottom)); color: #64748b; text-align: center; font-size: .75rem; }
.output-audio { position: fixed; left: -2px; bottom: -2px; width: 1px; height: 1px; opacity: .001; pointer-events: none; }
@media (max-width: 820px) {
  header { display: block; }
  .header-badges { justify-content: flex-start; margin-top: 14px; }
  .form-grid { grid-template-columns: 1fr 1fr; }
  .device-info { grid-template-columns: 1fr 1fr; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .section-heading.graph-heading { display: block; }
  .export-buttons { margin-top: 12px; justify-content: flex-start; }
}
@media (max-width: 480px) {
  .form-grid { grid-template-columns: 1fr; }
  .panel { padding: 15px; border-radius: 15px; }
  .button-row button { flex: 1 1 auto; }
  .section-heading { display: block; }
  .method-badge, .quality-badge { display: inline-block; margin-top: 8px; }
  .summary-grid { grid-template-columns: 1fr 1fr; }
  .canvas-wrap { min-height: 360px; height: 58vh; }
}
.analysis-warning {
  margin-top: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(250, 204, 21, .35);
  border-radius: 10px;
  background: rgba(113, 63, 18, .16);
  color: #fde68a;
  font-size: .78rem;
  line-height: 1.55;
}
.analysis-warning p + p { margin-top: 4px; }


/* v4.0.1: iPhone向け横はみ出し防止 */
html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}
body {
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}
header, main, footer,
.panel, .section-heading, .section-heading > *,
.form-grid, .form-grid > *, .advanced-grid > *,
.monitor-grid, .monitor-block, .monitor-label,
.device-info, .device-info > *,
.graph-panel, .graph-heading, .export-buttons,
.reference-row, .reference-row > *,
.canvas-wrap, .legend, .summary, .summary-grid,
.saved-list, .saved-item, .saved-item > * {
  min-width: 0;
  max-width: 100%;
}
input, select, button, output {
  min-width: 0;
  max-width: 100%;
}
label span {
  min-width: 0;
  max-width: 100%;
}
label span > input[type="number"],
label span > input[type="range"] {
  min-width: 0;
  flex: 1 1 auto;
}
label span > output {
  flex: 0 0 auto;
}
.lead, .hint, .status, .monitor-help,
.section-heading p, .reference-row > span,
.summary, .saved-item small, .notes-panel li {
  overflow-wrap: anywhere;
}
.saved-item {
  grid-template-columns: auto minmax(0, 1fr) auto;
}
.view-tabs {
  width: 100%;
  max-width: 100%;
  overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 820px) {
  .method-badge {
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .graph-heading .export-buttons {
    width: 100%;
  }
}

@media (max-width: 480px) {
  header, main, footer {
    width: min(100% - 18px, 1160px);
  }
  h1 {
    font-size: clamp(1.85rem, 12vw, 3rem);
    overflow-wrap: anywhere;
  }
  .device-info,
  .summary-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .button-row,
  .export-buttons {
    width: 100%;
  }
  .button-row > button,
  .export-buttons > button,
  .calibration-row > button,
  .calibration-row > .file-button {
    flex: 1 1 calc(50% - 6px);
    width: auto;
  }
  .reference-row label {
    width: 100%;
  }
  .saved-item {
    grid-template-columns: auto minmax(0, 1fr);
  }
  .saved-item > button {
    grid-column: 1 / -1;
    width: 100%;
  }
  .canvas-wrap {
    width: 100%;
    max-width: 100%;
  }
}

/* v4.0.2: グラフ切替タブの文字・ボタン位置を固定 */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
.view-tabs {
  display: flex;
  align-items: stretch;
  gap: 8px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 1px 10px;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
}
.view-tab {
  flex: 0 0 auto;
  inline-size: max-content;
  min-inline-size: max-content;
  max-inline-size: none;
  min-block-size: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 14px;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: clip;
  scroll-snap-align: start;
}
@media (max-width: 480px) {
  .view-tabs {
    margin-inline: -2px;
    padding-inline: 2px;
  }
  .view-tab {
    min-block-size: 42px;
    padding: 8px 12px;
    font-size: .88rem;
  }
}

/* v4.1.0: PDF測定レポート */
button.report-button {
  background: #164e63;
  border-color: #0891b2;
  color: #ecfeff;
}
button.report-button:hover:not(:disabled) {
  border-color: #22d3ee;
}