/* VoiceUp Offline Studio base styles. The v3 workspace refresh is appended
 * below so the original component selectors remain stable. */

:root {
  --bg: #f5f7fa; --panel: #ffffff; --panel2: #f8fafc; --text: #1f2937;
  --muted: #667085; --accent: #e23e57; --accent2: #c52e45;
  --male: #3b82f6; --neutral: #087f5b; --female: #e23e57; --warn: #b45309;
  --border: #e4e7ec; --graphbg: #fbfcfe; --card-shadow: 0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.06);
  --record: #d92d4b; --success: #087f5b; --error: #b42318; --focus: #a61b3b;
  --radius-sm: 6px; --radius-md: 8px; --radius-lg: 12px;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
}

/* Praat-informed synchronized acoustic editor. */
.pe-workspace { overflow: hidden; border: 1px solid var(--border); border-radius: 7px; background: var(--panel); box-shadow: var(--card-shadow); }
.pe-source-bar { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.pe-source-context { min-width: 0; display: flex; flex: 1 1 auto; align-items: center; gap: 10px; }
.pe-segmented { display: inline-grid; grid-template-columns: 1fr 1fr; padding: 3px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel2); }
.pe-segmented button { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 7px; padding: 8px 12px; border: 0; border-radius: 4px; background: transparent; color: var(--muted); cursor: pointer; font: inherit; font-size: 14px; }
.pe-segmented button.active { background: var(--panel); color: var(--text); box-shadow: 0 1px 2px rgba(16,24,40,.08); }
.pe-segmented button span:first-child { color: var(--accent); font-size: 11px; }
.pe-source-actions { display: flex; align-items: center; gap: 8px; }
.pe-source-actions .primary, .pe-source-actions .ghost { min-height: 44px; margin: 0; padding: 8px 13px; border-radius: 5px; font-size: 14px; }
.pe-file-action { min-height: 36px; display: inline-flex; align-items: center; gap: 7px; padding: 7px 12px; border: 1px solid var(--border); border-radius: 5px; background: var(--panel2); color: var(--text); cursor: pointer; font-size: 13px; }
.pe-file-action:hover { border-color: var(--accent); }
.pe-file-action input { position: absolute; width: 1px; height: 1px; overflow: hidden; opacity: 0; }
.pe-source-status { min-width: 0; max-width: 380px; margin: 0; padding: 0; font-size: 13px; line-height: 1.45; overflow-wrap: anywhere; }
.vt-layers-disclosure { border-bottom: 1px solid var(--border); }
.vt-layers-disclosure > summary { display: flex; align-items: center; justify-content: space-between; min-height: 44px; padding: 8px 12px; cursor: pointer; font-weight: 650; }
.vt-layers-disclosure > summary::marker { color: var(--muted); }
.pe-workspace .vt-layer-controls { top: 54px; margin: 0; padding: 9px 12px; background: color-mix(in srgb, var(--panel) 96%, transparent); }
.pe-workspace .vt-layer-controls fieldset:first-child { padding-left: 0; }
.pe-workspace .vt-layer-toggle { background: var(--panel2); }
.pe-editor-toolbar { min-height: 52px; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 10px 8px 12px; border-bottom: 1px solid var(--border); }
.pe-domain { min-width: 0; display: flex; flex-direction: column; }
.pe-domain strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.pe-domain span { color: var(--muted); font: 11px ui-monospace, monospace; }
.pe-command-group { display: flex; align-items: center; gap: 4px; flex: 0 0 auto; }
.pe-command-group .icon-btn { width: 32px; height: 32px; border-radius: 5px; background: transparent; font-size: 14px; }
.pe-command-group .icon-btn:disabled { opacity: .32; pointer-events: none; }
.pe-canvas-wrap { position: relative; min-height: 210px; overflow: hidden; background: var(--panel); }
#pe-main-canvas { width: 100%; min-width: 0; display: block; touch-action: none; cursor: crosshair; }
.pe-canvas-empty { position: absolute; inset: 44px 20px 36px; display: grid; place-content: center; justify-items: center; gap: 4px; color: var(--muted); text-align: center; pointer-events: none; }
.pe-canvas-empty strong { color: var(--text); font-size: 14px; }
.pe-canvas-empty span { font-size: 12px; }
.pe-selection-bar { display: grid; grid-template-columns: 1.45fr repeat(5, 1fr); overflow: hidden; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--border); gap: 1px; }
.pe-selection-bar > div { min-width: 0; display: flex; flex-direction: column; gap: 2px; padding: 8px 10px; background: var(--panel2); }
.pe-selection-bar small { overflow: hidden; color: var(--muted); font-size: 12px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.pe-selection-bar strong { overflow: hidden; font: 650 14px ui-monospace, monospace; font-variant-numeric: tabular-nums; text-overflow: ellipsis; white-space: nowrap; }
.pe-selection-inputs { display: grid; grid-template-columns: repeat(2, minmax(0, 220px)); gap: 12px; padding: 12px; border-bottom: 1px solid var(--border); background: var(--panel2); }
.pe-selection-inputs label { display: grid; gap: 5px; color: var(--muted); font-size: 13px; font-weight: 600; }
.pe-selection-inputs input { min-height: 44px; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--panel); color: var(--text); font: inherit; font-variant-numeric: tabular-nums; }
.pe-query-panel, .pe-settings, .pe-report { margin: 0; padding: 16px 14px 18px; border-top: 1px solid var(--border); }
.pe-query-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 10px; }
.pe-query-heading h2 { margin: 0; font-size: 16px; }
.pe-query-heading .eyebrow { margin-bottom: 2px; }
#pe-spectrum-canvas { width: 100%; height: 180px; display: block; border: 1px solid var(--border); background: var(--graphbg); }
.pe-sample-save { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.pe-sample-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.pe-sample-heading > div:first-child { min-width: 0; }
.pe-sample-heading strong { font-size: 13px; }
.pe-sample-heading p { margin: 3px 0 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.pe-sample-actions { display: flex; flex: 0 0 auto; align-items: center; gap: 7px; }
.pe-sample-actions button { min-height: 34px; margin: 0; padding: 6px 11px; border-radius: 5px; font-size: 12px; }
.pe-sample-status { margin-top: 10px; padding: 10px 11px; border-left: 3px solid var(--warn); background: var(--panel2); }
.pe-sample-status.is-ready { border-left-color: var(--neutral); }
.pe-sample-status.is-error { border-left-color: var(--accent); }
.pe-sample-status-line { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.pe-sample-status-line strong { font-size: 12px; }
.pe-sample-status-line span { flex: 0 0 auto; color: var(--muted); font: 10px ui-monospace, monospace; }
.pe-sample-status p { margin: 6px 0 0; color: var(--muted); font-size: 13px; line-height: 1.45; }
.pe-sample-progress { height: 5px; display: block; margin-top: 7px; overflow: hidden; border-radius: 3px; background: color-mix(in srgb, var(--border) 78%, transparent); }
.pe-sample-progress i { width: 0; height: 100%; display: block; border-radius: inherit; background: var(--warn); transition: width 160ms ease, background-color 160ms ease; }
.pe-sample-status.is-ready .pe-sample-progress i { background: var(--neutral); }
.pe-sample-status.is-error .pe-sample-progress i { background: var(--accent); }
.pe-sample-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 10px 0 0; overflow: hidden; border: 1px solid var(--border); background: var(--border); gap: 1px; }
.pe-sample-metrics > div { min-width: 0; padding: 8px 9px; background: var(--panel); }
.pe-sample-metrics dt { overflow-wrap: anywhere; color: var(--muted); font-size: 12px; font-weight: 700; }
.pe-sample-metrics dd { margin: 3px 0 0; overflow-wrap: anywhere; font: 600 12px ui-monospace, monospace; }
.pe-sample-save > .measurement-note { margin: 8px 0 0; }
.pe-quality-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; overflow: hidden; border: 1px solid var(--border); background: var(--border); gap: 1px; }
.pe-quality-grid > div { min-width: 0; padding: 9px 10px; background: var(--panel2); }
.pe-quality-grid dt { overflow-wrap: anywhere; color: var(--muted); font-size: 12px; font-weight: 700; cursor: help; }
.pe-quality-grid dd { margin: 4px 0 0; font: 600 13px ui-monospace, monospace; }
#vt-quality > .measurement-note { margin: 9px 0 0; }
.pe-settings-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 16px; }
.pe-settings-grid > label { min-width: 0; display: flex; flex-direction: column; gap: 5px; color: var(--muted); font-size: 13px; }
.pe-settings-grid > label > span:last-child { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pe-settings-grid input, .pe-settings-grid select { width: 100%; min-width: 0; height: 34px; padding: 5px 7px; border: 1px solid var(--border); border-radius: 4px; background: var(--panel2); color: var(--text); font: inherit; }
.pe-setting-checks { display: flex; align-items: flex-end; flex-wrap: wrap; gap: 6px 14px; }
.pe-setting-checks label { display: flex; align-items: center; min-height: 44px; gap: 6px; color: var(--muted); font-size: 13px; }
.pe-setting-checks input { width: 15px; height: 15px; accent-color: var(--accent); }
.pe-estimate-badge { padding: 3px 7px; border: 1px solid var(--border); border-radius: 4px; color: var(--muted); font-size: 12px; }
.pe-report-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); border: 1px solid var(--border); border-radius: 5px; overflow: hidden; background: var(--border); gap: 1px; }
.pe-report-grid span { min-width: 0; display: flex; flex-direction: column; gap: 3px; padding: 9px 10px; background: var(--panel2); }
.pe-report-grid small { color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
.pe-report-grid strong { overflow-wrap: anywhere; font-size: 13px; }
.pe-report .measurement-note { margin-bottom: 0; }
.vt-live-console { margin: 0; padding: 16px 12px; border-bottom: 1px solid var(--border); background: var(--panel); }
.vt-live-console .vt-layer-heading { align-items: center; margin-bottom: 10px; }
.pe-live-strip { display: grid; grid-template-columns: 1.4fr repeat(7, minmax(0, 1fr)); overflow: hidden; border: 1px solid var(--border); border-radius: 6px; background: var(--border); gap: 1px; }
.pe-live-strip > span { min-width: 0; min-height: 66px; display: flex; flex-direction: column; justify-content: center; gap: 3px; padding: 8px 10px; background: var(--panel); }
.pe-live-strip small { color: var(--muted); font-size: 12px; font-weight: 700; }
.pe-live-strip strong { overflow: hidden; font-size: 14px; text-overflow: ellipsis; white-space: nowrap; text-transform: capitalize; }
.pe-live-strip .pe-live-primary strong { font-size: 30px; font-variant-numeric: tabular-nums; }
.pe-live-strip .pe-live-primary strong small { font-size: 11px; font-weight: 400; text-transform: none; }
.pe-live-strip em { color: var(--muted); font-size: 12px; font-style: normal; }
.pe-live-guidance { display: flex; align-items: baseline; gap: 10px; padding: 9px 1px 2px; }
.pe-live-guidance strong { font-size: 13px; }
.pe-live-guidance span { color: var(--muted); font-size: 12px; }
.vt-live-coach { margin-top: 12px; padding: 12px 0 10px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.vt-coach-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 10px; }
.vt-coach-header .eyebrow { margin: 0 0 2px; }
.vt-coach-header h3 { margin: 0; font-size: 16px; }
.vt-coach-controls { display: flex; align-items: center; justify-content: flex-end; gap: 8px; }
.vt-coach-mode { display: inline-flex; flex: 0 0 auto; padding: 2px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel2); }
.vt-coach-mode button { min-height: 44px; margin: 0; padding: 7px 10px; border: 0; border-radius: 4px; background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; }
.vt-coach-mode button.active { background: var(--panel); color: var(--text); box-shadow: 0 1px 3px rgba(15, 23, 42, .10); }
.vt-coach-strain { display: inline-flex; align-items: center; min-height: 44px; gap: 7px; padding: 7px 9px; border: 1px solid var(--border); border-radius: 6px; color: var(--muted); font-size: 13px; font-weight: 650; cursor: pointer; }
.vt-coach-strain:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, var(--panel)); color: var(--accent); }
.vt-coach-strain input { width: 14px; height: 14px; margin: 0; accent-color: var(--accent); }
.vt-coach-primary { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: start; gap: 12px; min-height: 72px; padding: 12px; border-left: 3px solid var(--warn); background: var(--panel2); }
.vt-coach-primary.is-good { border-left-color: var(--neutral); }
.vt-coach-primary.is-warn { border-left-color: var(--accent); }
.vt-coach-primary strong { display: block; margin-bottom: 3px; font-size: 15px; line-height: 1.3; }
.vt-coach-primary p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.45; }
.vt-coach-primary .text-btn { min-height: 44px; margin-top: 7px; font-size: 13px; }
.vt-coach-state { display: inline-flex; align-items: center; min-height: 28px; padding: 4px 8px; border: 1px solid var(--border); border-radius: 4px; color: var(--muted); font-size: 12px; font-weight: 700; white-space: nowrap; }
.vt-coach-primary.is-good .vt-coach-state { border-color: var(--neutral); color: var(--neutral); }
.vt-coach-primary.is-warn .vt-coach-state { border-color: var(--accent); color: var(--accent); }
.vt-coach-progress { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 0; padding: 9px 0; border-bottom: 1px solid var(--border); list-style: none; }
.vt-coach-progress li { position: relative; display: flex; align-items: center; min-width: 0; gap: 7px; color: var(--muted); }
.vt-coach-progress li:not(:last-child)::after { position: absolute; top: 50%; right: 8px; left: 35px; height: 1px; background: var(--border); content: ''; }
.vt-coach-progress li > span { z-index: 1; display: grid; flex: 0 0 24px; width: 24px; height: 24px; place-items: center; border: 1px solid var(--border); border-radius: 50%; background: var(--panel); font-size: 11px; font-weight: 700; }
.vt-coach-progress li > strong { z-index: 1; min-width: 0; padding-right: 8px; background: var(--panel); font-size: 12px; overflow-wrap: anywhere; }
.vt-coach-progress li.is-done > span { border-color: var(--neutral); color: var(--neutral); }
.vt-coach-progress li.is-active { color: var(--text); }
.vt-coach-progress li.is-active > span { border-color: var(--accent); background: var(--accent); color: white; }
.vt-coach-lanes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin-top: 1px; overflow: visible; border: 1px solid var(--border); background: var(--border); }
.vt-coach-lane { position: relative; min-width: 0; min-height: 88px; display: flex; flex-direction: column; gap: 6px; padding: 9px 10px; background: var(--panel); }
.vt-coach-lane:hover, .vt-coach-lane:focus-within { z-index: 20; }
.vt-coach-lane > div { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.vt-coach-lane small { min-width: 0; overflow-wrap: anywhere; color: var(--muted); font-size: 12px; font-weight: 700; }
.vt-coach-lane strong { font-size: 13px; white-space: nowrap; }
.vt-coach-lane em { color: var(--muted); font-size: 12px; font-style: normal; overflow-wrap: anywhere; }
.vt-coach-guide-anchor { display: inline-flex; min-width: 0; align-items: center; gap: 4px; border-radius: 3px; outline: none; cursor: help; }
.vt-coach-guide-anchor > small { border-bottom: 1px dotted color-mix(in srgb, var(--muted) 65%, transparent); }
.vt-coach-guide-anchor:focus-visible { outline: 2px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 3px; }
.vt-coach-guide-icon { display: grid; flex: 0 0 14px; width: 14px; height: 14px; place-items: center; border: 1px solid var(--border); border-radius: 50%; color: var(--muted); font-size: 9px; font-weight: 700; line-height: 1; }
.vt-coach-guide { position: absolute; z-index: 40; top: 32px; left: 8px; width: min(330px, calc(100vw - 40px)); display: grid; gap: 8px; visibility: hidden; padding: 11px 12px 12px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); box-shadow: 0 10px 28px rgba(15, 23, 42, .18); color: var(--text); opacity: 0; pointer-events: none; transform: translateY(-3px); transform-origin: top left; transition: opacity 120ms var(--ease-out), transform 120ms var(--ease-out), visibility 0s linear 120ms; }
.vt-coach-lane:nth-child(n+3) .vt-coach-guide { right: 8px; left: auto; }
.vt-coach-guide-anchor:hover .vt-coach-guide, .vt-coach-guide-anchor:focus .vt-coach-guide { visibility: visible; opacity: 1; transform: translateY(0); }
.vt-coach-guide > b { font-size: 12px; line-height: 1.3; }
.vt-coach-guide > span { display: grid; grid-template-columns: 64px minmax(0, 1fr); align-items: start; gap: 7px; color: var(--muted); font-size: 12px; line-height: 1.45; }
.vt-coach-guide > span > i { color: var(--text); font-size: 11px; font-style: normal; font-weight: 700; }
.vt-coach-guide > span > span { min-width: 0; overflow-wrap: anywhere; }
.vt-coach-guide > .is-caution { padding-top: 7px; border-top: 1px solid var(--border); }
.vt-coach-guide > .is-caution > i { color: var(--accent); }
.vt-coach-track { display: block; height: 5px; overflow: hidden; border-radius: 3px; background: var(--panel2); }
.vt-coach-track i { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--muted); transition: width 180ms ease, background-color 180ms ease; }
.vt-coach-lane.resonance .vt-coach-track i { background: var(--male); }
.vt-coach-lane.weight .vt-coach-track i { background: #8b5cf6; }
.vt-coach-lane.clarity .vt-coach-track i { background: var(--neutral); }
.vt-coach-lane.expression .vt-coach-track i { background: var(--warn); }
.vt-coach-lane[data-tone="low"] em, .vt-coach-lane[data-tone="high"] em { color: var(--accent); }
.vt-coach-lane[data-tone="good"] em { color: var(--neutral); }
.vt-live-coach > .measurement-note { margin: 8px 0 0; }

@media (max-width: 900px) {
  .pe-report-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pe-quality-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .pe-live-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .pe-live-strip .pe-live-primary { grid-column: span 2; }
  .vt-coach-lanes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .vt-coach-lane:nth-child(odd) .vt-coach-guide { right: auto; left: 8px; }
  .vt-coach-lane:nth-child(even) .vt-coach-guide { right: 8px; left: auto; }
}

@media (max-width: 620px) {
  .pe-workspace { border-right: 0; border-left: 0; border-radius: 0; box-shadow: none; }
  .pe-source-bar { align-items: stretch; flex-direction: column; }
  .pe-source-context { align-items: stretch; flex-direction: column; gap: 6px; }
  .pe-segmented, .pe-source-actions, .pe-source-actions .primary, .pe-source-actions .ghost, .pe-file-action { width: 100%; }
  .pe-source-status { max-width: none; padding: 0 2px; }
  .pe-file-action { justify-content: center; }
  .pe-workspace .vt-layer-controls { padding-right: 10px; padding-left: 10px; }
  .pe-editor-toolbar { align-items: flex-start; }
  .pe-command-group { display: grid; grid-template-columns: repeat(3, 32px); }
  .pe-selection-bar { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .pe-selection-bar > div:first-child { grid-column: span 3; }
  .pe-selection-inputs { grid-template-columns: 1fr 1fr; }
  .pe-settings-grid { grid-template-columns: 1fr; }
  .pe-sample-heading { align-items: stretch; flex-direction: column; gap: 9px; }
  .pe-sample-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .pe-sample-actions button { width: 100%; }
  .pe-sample-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pe-quality-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pe-report-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pe-live-strip { display: flex; overflow-x: auto; scroll-snap-type: x proximity; }
  .pe-live-strip > span { flex: 0 0 116px; min-height: 72px; scroll-snap-align: start; }
  .pe-live-strip .pe-live-primary { flex-basis: 154px; }
  .pe-live-guidance { align-items: flex-start; flex-direction: column; gap: 2px; }
  .vt-live-console .vt-layer-heading { align-items: flex-start; }
  .volume-corner-marker { flex-basis: 112px; }
  .vt-coach-header { align-items: stretch; flex-direction: column; gap: 8px; }
  .vt-coach-controls { align-items: stretch; flex-direction: column; }
  .vt-coach-mode { width: 100%; }
  .vt-coach-mode button { flex: 1 1 0; }
  .vt-coach-strain { justify-content: center; }
  .vt-coach-primary { grid-template-columns: 1fr; gap: 7px; }
  .vt-coach-progress { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 9px; }
  .vt-coach-progress li:nth-child(2)::after { display: none; }
}
[data-theme="dark"] {
  --bg: #111827; --panel: #1f2937; --panel2: #263244; --text: #f3f4f6;
  --muted: #aab4c4; --accent: #ff6b81; --accent2: #e23e57;
  --male: #60a5fa; --neutral: #34d399; --female: #ff6b81; --warn: #fbbf24;
  --border: #ffffff26; --graphbg: #162131; --card-shadow: none; --record: #f04f69;
  --success: #6ee7b7; --error: #fda29b; --focus: #ff8fa3;
}

* { box-sizing: border-box; }
body { min-height: 100vh; display: flex; flex-direction: column; margin: 0; font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei UI", "PingFang SC", sans-serif; background: var(--bg); color: var(--text); }
header { display: flex; align-items: center; gap: 24px; padding: 14px 22px; background: var(--panel); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.brand { font-size: 20px; font-weight: 700; }
.brand .sub { color: var(--muted); font-size: 13px; font-weight: 400; margin-left: 6px; }
nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav-btn { min-height: 44px; background: transparent; color: var(--muted); border: 1px solid transparent; padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 14px; }
.nav-btn.active, .nav-btn:hover { color: var(--text); background: var(--panel2); }
.header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.practice-chip { background: var(--panel2); color: var(--muted); border-radius: 999px; padding: 5px 14px; font-size: 13px; }
.theme-toggle { background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; width: 44px; height: 44px; cursor: pointer; font-size: 16px; }

main { max-width: 900px; margin: 0 auto; padding: 24px 18px 60px; }
.view { display: none; } .view.active { display: block; }
.hidden { display: none !important; }
h2 { margin: 18px 0 10px; }
.note { color: var(--muted); font-size: 13px; }
.step-tag { color: var(--muted); font-size: 13px; font-weight: 400; margin-left: 8px; }
button.primary { min-height: 44px; background: var(--accent2); border: 0; color: #fff; padding: 10px 18px; border-radius: 10px; font-size: 15px; cursor: pointer; margin: 8px 8px 8px 0; box-shadow: var(--card-shadow); }
button.ghost { min-height: 44px; background: transparent; border: 1px solid var(--border); color: var(--muted); padding: 8px 14px; border-radius: 10px; cursor: pointer; margin: 8px 8px 8px 0; }
button:disabled { opacity: .45; cursor: default; }

.stage-tabs { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.stage-tab { background: var(--panel); color: var(--muted); border: 1px solid var(--border); padding: 8px 16px; border-radius: 999px; cursor: pointer; }
.stage-tab.active { color: #fff; background: var(--accent2); border-color: transparent; }

.section-block { display: grid; grid-template-columns: 220px minmax(0, 1fr); column-gap: 22px; margin: 0; border-top: 1px solid var(--border); }
.section-block > h3 { grid-column: 1; grid-row: 1; align-self: start; margin: 13px 0; padding-right: 12px; color: var(--accent); font-size: 13px; text-transform: uppercase; letter-spacing: 0; }
.exercise-card { grid-column: 2; width: 100%; min-height: 54px; display: flex; align-items: center; gap: 12px; margin: 0; padding: 11px 8px; border: 0; border-bottom: 1px solid var(--border); border-radius: 0; background: transparent; box-shadow: none; color: var(--text); cursor: pointer; font: inherit; text-align: left; }
.exercise-card:last-child { border-bottom: 0; }
.exercise-card:hover, .exercise-card:focus-visible { background: var(--panel); }
.exercise-card .idx { width: 28px; height: 28px; border-radius: 50%; background: var(--panel2); display: flex; align-items: center; justify-content: center; font-size: 13px; color: var(--accent); flex-shrink: 0; }
.exercise-card.done .idx { background: var(--neutral); color: #fff; }
.exercise-card .nm { flex: 1; }
.exercise-card .st { color: var(--muted); font-size: 12px; }

.step-block { background: var(--panel); border-radius: 12px; padding: 14px 16px; margin: 12px 0; border: 1px solid var(--border); box-shadow: var(--card-shadow); }
.step-intro { display: flex; gap: 10px; align-items: flex-start; }
.step-intro p { margin: 0; flex: 1; }
.phrase-row { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-top: 1px solid var(--border); flex-wrap: wrap; }
.phrase-row .txt { flex: 1; min-width: 140px; font-size: 15px; }
.icon-btn { background: var(--panel2); border: 1px solid var(--border); color: var(--text); border-radius: 8px; width: 44px; height: 44px; cursor: pointer; font-size: 15px; flex-shrink: 0; }
.icon-btn:hover { background: var(--accent2); color: #fff; }
.video-slot video { width: 100%; max-width: 640px; border-radius: 12px; margin: 10px 0; background: #000; }
.pitch-chip { font-size: 12px; padding: 2px 10px; border-radius: 999px; background: var(--panel2); color: var(--muted); }
.pitch-chip.male { color: var(--male); } .pitch-chip.neutral { color: var(--neutral); } .pitch-chip.female { color: var(--female); }

.q-item { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; margin: 8px 0; }
.q-item .q-text { margin-bottom: 8px; }
.likert { display: flex; gap: 6px; flex-wrap: wrap; }
.likert button { flex: 1; min-width: 96px; padding: 7px 4px; font-size: 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--panel2); color: var(--muted); cursor: pointer; }
.likert button.sel { background: var(--accent2); color: #fff; border-color: transparent; }

.recorder-panel .passage { background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--accent); border-radius: 8px; padding: 14px 16px; line-height: 1.6; margin: 12px 0; }
.live-readout { font-size: 34px; font-weight: 700; margin: 6px 0; }
.live-readout small { font-size: 14px; color: var(--muted); font-weight: 400; }
canvas.pitch-graph { width: 100%; height: 180px; background: var(--graphbg); border: 1px solid var(--border); border-radius: 12px; display: block; }
.rec-controls { display: flex; gap: 10px; align-items: center; margin: 12px 0; flex-wrap: wrap; }
/* genderfluent-style circular coral record action */
.rec-controls button.primary { border-radius: 999px; background: var(--record); min-width: 56px; min-height: 44px; }
.recording .rec-controls button.primary { box-shadow: 0 0 0 6px #e85d5d33; }
.rec-dot { width: 12px; height: 12px; border-radius: 50%; background: #999; }
.recording .rec-dot { background: var(--record); animation: pulse 1s infinite alternate; }
@keyframes pulse { to { opacity: .35; } }
audio { width: 100%; margin: 8px 0; }
.recorder-status { min-height: 1.5em; color: var(--muted); font-size: 13px; line-height: 1.45; }
.recorder-status[data-tone="error"], #analysis-save-status[data-tone="error"] { color: var(--error); font-weight: 650; }
.recorder-panel[data-recorder-state="requesting"] .rec-dot,
.recorder-panel[data-recorder-state="analysing"] .rec-dot,
.recorder-panel[data-recorder-state="saving"] .rec-dot { background: var(--warn); }
.analysis-result-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.analysis-result-actions .recorder-status { flex: 1 1 260px; }

.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 12px 0; }
@media (max-width: 640px) { .result-grid { grid-template-columns: 1fr; } }
.result-card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; box-shadow: var(--card-shadow); }
.result-card h4 { margin: 0 0 8px; color: var(--accent); }
.bandbar { height: 14px; border-radius: 7px; overflow: hidden; display: flex; margin: 8px 0 4px; background: var(--panel2); }
.bandbar > div { height: 100%; }
.bandbar .b-male { background: var(--male); } .bandbar .b-neutral { background: var(--neutral); } .bandbar .b-female { background: var(--female); }
.band-legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); flex-wrap: wrap; }
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 4px; }
.big-hz { font-size: 30px; font-weight: 700; }
.kv { color: var(--muted); font-size: 13px; }

.history-item { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; margin: 10px 0; }
.history-item .head { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.history-tools { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 8px; }
.history-tools .ghost, .history-tools .secondary { margin: 0; }
.history-summary { display: grid; grid-template-columns: minmax(150px, 1fr) minmax(110px, .7fr) auto; align-items: center; gap: 12px; min-height: 48px; padding: 8px 2px; cursor: pointer; }
.history-summary span { color: var(--muted); font-size: 13px; }
.history-summary-value { color: var(--text) !important; font-size: 16px !important; font-weight: 700; font-variant-numeric: tabular-nums; text-align: right; }
.history-details > .result-grid, .history-details > .kv, .history-details > audio { margin-right: 20px; margin-left: 20px; }
.history-pager { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 18px; }
.history-pager .ghost { margin: 0; }
.history-pager span { min-width: 110px; color: var(--muted); text-align: center; font-size: 13px; }
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 18px; border-top: 1px solid var(--border); }

.vt-panel { margin-top: 8px; }
.likert input, .likert select { background: var(--panel2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px; font-size: 14px; flex: 1; min-width: 90px; }

.guide-subnav { display: flex; gap: 6px; flex-wrap: nowrap; max-width: 100%; margin-bottom: 10px; overflow-x: auto; scrollbar-width: thin; }
.guide-tab { background: var(--panel); color: var(--muted); border: 1px solid var(--border); padding: 8px 14px; border-radius: 8px; cursor: pointer; font-size: 13px; }
.guide-tab { flex: 0 0 auto; white-space: nowrap; }
.guide-tab.active { color: #fff; background: var(--accent2); border-color: transparent; }
.check-row { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 150px; padding: 8px 10px; background: var(--panel2); border: 1px solid var(--border); border-radius: 8px; font-size: 14px; cursor: pointer; }
.check-row input { accent-color: var(--accent2); width: 16px; height: 16px; }
#vt-streak-chip { transition: opacity .3s; }
#vt-streak-chip.dim { opacity: .45; }
.phrase-row { padding: 10px 0; }
.phrase-row:hover { background: var(--panel2); border-radius: 8px; }
.engine-select { width: 100%; }

/* v3 workspace refresh: calm neutral canvas, focused red action, readable
 * analysis surfaces, and a single responsive app shell. */
html { scroll-behavior: auto; }
body { min-width: 320px; font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 20; background: var(--text); color: var(--panel); padding: 8px 12px; border-radius: 6px; text-decoration: none; }
.skip-link:focus { top: 12px; }
.app-header { position: sticky; top: 0; z-index: 10; padding: 12px max(18px, calc((100vw - 1120px) / 2)); gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 8px; letter-spacing: 0; }
.brand-mark { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--accent); color: #fff; font-size: 11px; letter-spacing: 0; }
.brand .sub { margin-left: 0; }
nav { gap: 2px; }
.nav-btn { border-radius: 6px; padding: 8px 11px; }
.nav-btn.active { color: var(--accent); background: var(--panel2); box-shadow: inset 0 -2px 0 var(--accent); }
.mobile-nav-toggle { display: none; margin-left: auto; background: var(--panel2); border: 1px solid var(--border); border-radius: 6px; color: var(--text); width: 44px; height: 44px; cursor: pointer; }
.header-right { gap: 8px; }
.practice-chip { border-radius: 6px; padding: 5px 10px; }
.theme-toggle { border-radius: 6px; }
.locale-control select { height: 44px; min-width: 72px; padding: 0 24px 0 9px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel2); color: var(--text); font: inherit; cursor: pointer; }
main { width: 100%; max-width: 1120px; flex: 1 0 auto; padding: 30px 20px 72px; }
h1 { font-size: 30px; line-height: 1.15; letter-spacing: 0; margin: 4px 0 10px; }
h2 { letter-spacing: 0; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: 0; margin: 0 0 6px; }
.hero-copy, .view-copy { color: var(--muted); max-width: 620px; margin: 0 0 16px; }
.dashboard-next-detail { width: fit-content; max-width: 100%; margin: 0 0 10px; padding: 8px 10px; border-left: 3px solid var(--accent); background: var(--panel2); color: var(--text); font-size: 14px; font-weight: 650; overflow-wrap: anywhere; }
.dashboard-hero { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 10px 0 28px; border-bottom: 1px solid var(--border); }
.dashboard-hero h1 { max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.hero-signal { display: none; }
.signal-line { width: 26px; height: 64px; border: 2px solid var(--accent); border-left: 0; border-right: 0; transform: skewY(-18deg); opacity: .78; }
.signal-line.short { height: 34px; border-color: var(--male); }
.signal-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.signal-dot.small { width: 8px; height: 8px; background: var(--neutral); }
.dashboard-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0 0 20px; border-bottom: 1px solid var(--border); background: var(--panel); }
.stat-card, .dashboard-panel, .start-option, .feedback-card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--card-shadow); }
.stat-card { min-height: 96px; display: flex; flex-direction: column; justify-content: center; gap: 5px; padding: 14px 18px; border: 0; border-left: 1px solid var(--border); border-radius: 0; box-shadow: none; }
.stat-card:first-child { border-left: 0; }
.stat-label, .stat-meta { color: var(--muted); font-size: 12px; }
.stat-card strong { font-size: 25px; line-height: 1.1; }
.dashboard-columns { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .85fr); gap: 28px; }
.dashboard-panel { padding: 14px 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.panel-heading h2 { margin: 0; font-size: 18px; }
.text-btn { border: 0; background: transparent; color: var(--accent); cursor: pointer; padding: 4px 0; font-weight: 600; white-space: nowrap; }
.text-btn span, .secondary span { margin-left: 4px; }
.stage-progress-row { padding: 12px 0; border-top: 1px solid var(--border); }
.stage-progress-row:first-child { border-top: 0; padding-top: 0; }
.stage-progress-top { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 6px; }
.stage-progress-top span { color: var(--muted); }
.stage-progress-top b { color: var(--text); margin-right: 6px; }
.stage-progress-row small { display: block; color: var(--muted); font-size: 12px; margin-top: 5px; }
.progress-track { height: 7px; background: var(--panel2); border-radius: 999px; overflow: hidden; }
.progress-track i { display: block; height: 100%; background: var(--accent); border-radius: inherit; }
.dashboard-prompt { display: flex; flex-direction: column; align-items: flex-start; justify-content: center; align-self: stretch; padding: 18px 20px; border-left: 3px solid var(--accent); background: var(--panel2); }
.dashboard-prompt h2 { margin: 2px 0 8px; font-size: 21px; }
.dashboard-prompt p:not(.eyebrow) { color: var(--muted); margin: 0 0 18px; }
.secondary { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; background: var(--panel2); color: var(--text); border: 1px solid var(--border); padding: 9px 14px; border-radius: 6px; cursor: pointer; font-weight: 600; }
.secondary:hover, .secondary:focus-visible { border-color: var(--accent); color: var(--accent); }
.recent-panel { margin-top: 12px; padding-top: 22px; border-top: 1px solid var(--border); }
.recent-list { display: grid; gap: 8px; }
.recent-row { display: grid; grid-template-columns: 80px 90px 1fr; align-items: center; gap: 12px; padding: 10px 12px; background: var(--panel2); border-radius: 6px; }
.recent-date, .recent-meta { color: var(--muted); font-size: 12px; }
.empty-state, .loading-state, .error-state { color: var(--muted); margin: 4px 0; }
.error-state { color: var(--accent); }
.view-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; margin-bottom: 18px; }
.search-field { display: flex; align-items: center; gap: 8px; width: min(260px, 100%); border: 1px solid var(--border); background: var(--panel); color: var(--muted); padding: 8px 10px; border-radius: 6px; }
.search-field input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--text); font: inherit; }
.stage-tabs { width: max-content; max-width: 100%; gap: 2px; margin-bottom: 10px; padding: 3px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); }
.stage-tab { border: 0; border-radius: 4px; background: transparent; }
.stage-tab.active { background: var(--accent); }
.stage-overview { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 14px 0; margin-bottom: 14px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stage-overview h2 { margin: 0 0 4px; font-size: 19px; }
.stage-overview p:not(.eyebrow) { color: var(--muted); margin: 0; max-width: 650px; }
.stage-overview-progress { width: 180px; flex: 0 0 180px; }
.stage-overview-progress strong { display: block; font-size: 22px; }
.stage-overview-progress span { display: block; color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.analysis-start-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 1px; margin: 20px 0; overflow: hidden; border: 1px solid var(--border); border-radius: 7px; background: var(--border); }
.start-option { display: flex; gap: 14px; padding: 18px; border: 0; border-radius: 0; box-shadow: none; }
.start-option:first-child { background: color-mix(in srgb, var(--accent) 5%, var(--panel)); box-shadow: inset 3px 0 0 var(--accent); }
.start-option strong { display: block; margin-bottom: 2px; }
.start-option p { margin: 0 0 12px; }
.option-kind { color: var(--accent); font-size: 12px; font-weight: 750; padding-top: 2px; }
.analysis-settings { margin: 14px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.analysis-settings > summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; color: var(--text); font-weight: 650; }
.analysis-settings > summary::marker { color: var(--muted); }
.file-label { display: inline-block; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.quick-analysis-result { margin-top: 16px; }
.import-result-heading { display: flex; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.import-result-heading strong { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.analyse-lead { max-width: 760px; color: var(--text); font-size: 16px; }
.analysis-setup { display: grid; grid-template-columns: minmax(220px, 340px) minmax(0, 1fr); align-items: end; gap: 18px; margin: 0; padding: 4px 0 14px; }
.analysis-setup label { display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 600; }
.analysis-setup select { min-height: 38px; padding: 7px 9px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); color: var(--text); font: inherit; }
.analysis-setup .note { margin: 0; }
.analysis-disclaimer { margin: 14px 0; padding: 10px 12px; border-left: 3px solid var(--neutral); background: var(--panel2); color: var(--muted); font-size: 12px; }
.analysis-result-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }

.analysis-profile-card { min-width: 0; padding: 16px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); box-shadow: var(--card-shadow); }
.analysis-profile-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.analysis-profile-head h3 { margin: 0; font-size: 18px; }
.analysis-profile-head .eyebrow { margin-bottom: 2px; }
.evidence-badge { flex: 0 0 auto; padding: 5px 8px; border: 1px solid var(--border); border-radius: 5px; color: var(--muted); font-size: 13px; font-weight: 700; }
.evidence-badge.strong { border-color: var(--neutral); color: var(--neutral); }
.evidence-badge.limited { border-color: var(--warn); color: var(--warn); }
.analysis-issues { margin: 0 0 12px; padding: 9px 11px; border-left: 3px solid var(--warn); background: var(--panel2); }
.analysis-issues p { margin: 2px 0; color: var(--muted); font-size: 12px; }
.practice-score-summary { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin: 0 0 12px; padding: 12px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.practice-score-primary, .practice-evidence { display: grid; grid-template-columns: auto auto; align-items: baseline; column-gap: 7px; }
.score-target-label { grid-column: 1 / -1; color: var(--muted); font-size: 13px; font-weight: 700; }
.practice-score-primary strong { font-size: 36px; line-height: 1; }
.practice-score-primary > span:last-child { color: var(--muted); font-size: 12px; }
.practice-evidence { min-width: 150px; justify-items: end; }
.practice-evidence span { color: var(--muted); font-size: 13px; }
.practice-evidence strong { font-size: 19px; }
.practice-evidence small { grid-column: 1 / -1; max-width: 320px; color: var(--warn); text-align: right; }
.practice-score-summary.withheld .practice-score-primary strong { color: var(--muted); }
.analysis-dimension-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; overflow: hidden; border: 1px solid var(--border); border-radius: 6px; background: var(--border); }
.analysis-dimension { min-width: 0; min-height: 116px; display: flex; flex-direction: column; gap: 3px; padding: 12px; background: var(--panel2); box-shadow: inset 3px 0 0 var(--muted); }
.analysis-dimension.pitch { box-shadow: inset 3px 0 0 var(--neutral); }
.analysis-dimension.resonance { box-shadow: inset 3px 0 0 var(--male); }
.analysis-dimension.quality { box-shadow: inset 3px 0 0 var(--accent); }
.analysis-dimension.evidence { box-shadow: inset 3px 0 0 var(--warn); }
.analysis-dimension.weight { box-shadow: inset 3px 0 0 #8b5cf6; }
.analysis-dimension.volume { box-shadow: inset 3px 0 0 var(--warn); }
.analysis-dimension.prosody { box-shadow: inset 3px 0 0 var(--neutral); }
.analysis-dimension-label { color: var(--muted); font-size: 13px; font-weight: 700; }
.analysis-dimension-value { min-width: 0; margin: 5px 0 3px; overflow-wrap: anywhere; font-size: 18px; line-height: 1.2; }
.analysis-dimension-detail { color: var(--muted); font-size: 13px; line-height: 1.45; }
.analysis-dimension.scored { min-height: 132px; }
.score-dimension-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.score-dimension-value { font-size: 16px; white-space: nowrap; }
.score-track { height: 6px; margin: 8px 0 5px; overflow: hidden; border-radius: 3px; background: var(--border); }
.score-track i { display: block; height: 100%; border-radius: inherit; background: var(--muted); }
.analysis-dimension.weight .score-track i { background: #8b5cf6; }
.analysis-dimension.resonance .score-track i { background: var(--male); }
.analysis-dimension.volume .score-track i { background: var(--warn); }
.analysis-dimension.prosody .score-track i { background: var(--neutral); }
.score-position { margin-bottom: 4px; color: var(--text); font-size: 12px; font-weight: 600; }
.analysis-evidence-line { margin: 10px 0 0; color: var(--text); font-size: 13px; font-weight: 600; }
.analysis-method-note { margin: 10px 0 0; color: var(--muted); font-size: 13px; }
.legacy-analysis .analysis-dimension { min-height: 0; }
.analysis-comparison, .analysis-coaching { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--border); }
.analysis-comparison h3, .analysis-coaching h3 { margin: 0 0 10px; font-size: 17px; }
.analysis-table-wrap { max-width: 100%; overflow-x: auto; }
.analysis-comparison table { width: 100%; min-width: 620px; border-collapse: collapse; background: var(--panel); }
.analysis-comparison th, .analysis-comparison td { padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: right; font-size: 12px; }
.analysis-comparison thead th { color: var(--muted); font-weight: 700; }
.analysis-comparison th:first-child { text-align: left; }
.analysis-coaching ul { margin: 0; padding-left: 20px; }
.analysis-coaching li { margin: 7px 0; color: var(--muted); }
.tool-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 12px; align-items: stretch; }
.tool-main { min-width: 0; }
.tool-panel-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.tool-panel-heading .live-readout { margin: 0; }
.volume-corner-marker { flex: 0 0 122px; min-height: 48px; display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; align-items: center; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel2); }
.volume-corner-marker > div { display: contents; }
.volume-corner-marker > div > span { color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: 0; }
.volume-corner-marker strong { font-size: 12px; white-space: nowrap; }
.volume-marker-track { grid-column: 1 / -1; display: block; height: 5px; overflow: hidden; border-radius: 3px; background: var(--border); }
.volume-marker-track i { display: block; width: 0; height: 100%; border-radius: inherit; background: var(--accent); transition: width 100ms linear, background-color 100ms linear; }
.volume-marker-track.is-hit i { background: var(--neutral); }
.volume-marker-track.is-clipping i { background: var(--warn); }
.volume-corner-marker small { grid-column: 1 / -1; color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
.vt-live-score { margin-top: 16px; }
.vt-live-score .analysis-profile-card { border-radius: 6px; }
.live-score-placeholder { padding: 12px 14px; border-left: 3px solid var(--border); background: var(--panel2); }
.live-score-placeholder strong { display: block; margin: 4px 0; font-size: 14px; }
.live-score-placeholder .note { margin: 0; }
.analyse-step-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.analyse-step-heading h2 { margin-top: 0; }
.feedback-card { padding: 18px; display: flex; flex-direction: column; justify-content: space-between; min-height: 160px; border-top: 3px solid var(--male); }
.feedback-card.is-hit { border-top-color: var(--neutral); }
.feedback-value { font-size: 18px; line-height: 1.2; margin: 12px 0 6px; }
.feedback-copy { color: var(--muted); margin: 0; font-size: 13px; }
.feedback-metrics { display: flex; gap: 24px; margin-top: 16px; }
.feedback-metrics span { display: flex; flex-direction: column; }
.feedback-metrics b { font-size: 16px; }
.feedback-metrics small { color: var(--muted); font-size: 13px; }
.feedback-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.metric-tag { padding: 5px 7px; border: 1px solid var(--border); border-radius: 5px; color: var(--muted); font-size: 12px; line-height: 1; }
.target-preset-bar { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-top: 10px; }
.target-label { color: var(--muted); font-size: 12px; font-weight: 600; margin-right: 4px; }
.preset-btn { background: var(--panel); border: 1px solid var(--border); color: var(--muted); border-radius: 999px; padding: 6px 10px; cursor: pointer; font-size: 12px; }
.preset-btn.active, .preset-btn:hover { color: var(--accent); border-color: var(--accent); background: var(--panel2); }
.target-preset-bar .note { margin-left: auto; }
.result-feedback { display: flex; flex-direction: column; gap: 2px; padding: 10px 12px; margin: 12px 0; border-radius: 6px; background: var(--panel2); border-left: 3px solid var(--male); }
.result-feedback.neutral { border-left-color: var(--neutral); }
.result-feedback.female { border-left-color: var(--accent); }
.result-feedback span { color: var(--muted); font-size: 12px; }

/* Analyse owns both check-ins and saved history. */
.analyse-local-nav { display: flex; gap: 2px; margin-bottom: 24px; border-bottom: 1px solid var(--border); }
.analyse-local-tab { position: relative; border: 0; background: transparent; color: var(--muted); padding: 9px 12px; cursor: pointer; font: inherit; font-weight: 600; }
.analyse-local-tab.active { color: var(--accent); }
.analyse-local-tab.active::after { content: ""; position: absolute; right: 10px; bottom: -1px; left: 10px; height: 2px; background: var(--accent); }
.history-heading { margin-bottom: 10px; }
.history-item { margin: 0; padding: 18px 0 24px; border: 0; border-bottom: 1px solid var(--border); border-radius: 0; background: transparent; }

/* Voice Tools is one workspace composed from independently visible layers. */
.vt-workspace-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 18px; }
.vt-workspace-heading h1 { margin-bottom: 8px; }
.vt-workspace-heading .view-copy { margin-bottom: 0; }
.vt-session-actions { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; flex: 0 0 auto; }
.vt-session-actions .primary { margin: 0; }
.vt-session-actions .note { margin: 0; max-width: 300px; text-align: right; }
.vt-layer-controls { position: sticky; top: 55px; z-index: 5; display: grid; grid-template-columns: .8fr 1.55fr .75fr; gap: 0; margin-bottom: 10px; padding: 10px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: color-mix(in srgb, var(--bg) 96%, transparent); backdrop-filter: blur(8px); }
.vt-layer-controls fieldset { display: flex; align-items: center; align-content: center; flex-wrap: wrap; gap: 6px; min-width: 0; margin: 0; padding: 0 12px; border: 0; border-left: 1px solid var(--border); }
.vt-layer-controls fieldset:first-child { padding-left: 0; border-left: 0; }
.vt-layer-controls legend { float: left; width: 100%; margin-bottom: 4px; color: var(--muted); font-size: 12px; font-weight: 700; }
.vt-layer-toggle { min-height: 32px; display: inline-flex; align-items: center; gap: 6px; padding: 5px 8px; border: 1px solid var(--border); border-radius: 5px; background: var(--panel); color: var(--muted); cursor: pointer; font-size: 12px; white-space: nowrap; }
.vt-layer-toggle:has(input:checked) { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, var(--panel)); color: var(--text); }
.vt-layer-toggle input { width: 14px; height: 14px; margin: 0; accent-color: var(--accent); }
.vt-layer-panel { margin: 0; padding: 24px 0 28px; border-bottom: 1px solid var(--border); scroll-margin-top: 145px; }
.vt-layer-panel:last-child { border-bottom: 0; }
.vt-layer-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
.vt-layer-heading h2 { margin: 0; font-size: 19px; }
.vt-layer-heading .note { margin: 3px 0 0; }

/* Lesson workspace */
.exercise-player-top { position: sticky; top: 55px; z-index: 6; display: grid; grid-template-columns: auto minmax(150px, 1fr) auto; align-items: center; gap: 16px; padding: 10px 0; background: color-mix(in srgb, var(--bg) 94%, transparent); border-bottom: 1px solid var(--border); backdrop-filter: blur(8px); }
.exercise-player-top .ghost { margin: 0; }
.exercise-breadcrumb { display: flex; flex-direction: column; min-width: 0; }
.exercise-breadcrumb span { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.exercise-breadcrumb strong { font-size: 14px; }
.exercise-player-actions { display: flex; align-items: center; gap: 6px; }
.exercise-player-actions .secondary { min-height: 36px; }
.exercise-player-actions button:disabled, .guide-toolbar-actions button:disabled { opacity: .4; cursor: default; pointer-events: none; }
.exercise-progress { display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 12px; padding: 10px 0 16px; color: var(--muted); font-size: 12px; }
.exercise-player-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 28px; align-items: start; }
.exercise-rail { position: sticky; top: 126px; max-height: calc(100vh - 150px); overflow-y: auto; padding: 12px 16px 12px 0; border-right: 1px solid var(--border); }
.exercise-rail-item { width: 100%; min-height: 44px; display: grid; grid-template-columns: 26px minmax(0, 1fr); align-items: center; gap: 9px; padding: 7px 8px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); text-align: left; cursor: pointer; }
.exercise-rail-item:hover { background: var(--panel2); color: var(--text); }
.exercise-rail-item.active { background: var(--panel2); color: var(--text); box-shadow: inset 3px 0 0 var(--accent); }
.exercise-rail-index { width: 24px; height: 24px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 50%; color: var(--muted); font-size: 11px; }
.exercise-rail-item.complete .exercise-rail-index { border-color: var(--neutral); background: var(--neutral); color: #fff; }
.exercise-rail-name { overflow-wrap: anywhere; font-size: 12px; line-height: 1.25; }
.exercise-player-main { min-width: 0; }
.exercise-summary { padding: 16px 0 8px; border-bottom: 1px solid var(--border); }
.exercise-summary h2 { margin: 0 0 4px; font-size: 22px; }
.exercise-summary .note { margin: 0; }
#ex-title-audio { padding: 8px 0; }
#ex-title-audio.is-playing { background: var(--panel2); }
.step-block { padding: 0; margin: 12px 0; overflow: clip; border-radius: 8px; }
.step-block.is-playing { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent); }
.step-summary { min-height: 48px; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto 20px; align-items: center; gap: 10px; padding: 9px 12px; background: var(--panel2); cursor: pointer; list-style: none; }
.step-summary::-webkit-details-marker { display: none; }
.step-summary::after { content: "+"; grid-column: 4; color: var(--muted); font-size: 18px; }
.step-block[open] .step-summary::after { content: "−"; }
.step-number { color: var(--accent); font: 700 11px ui-monospace, monospace; }
.step-count { color: var(--muted); font-size: 13px; white-space: nowrap; }
.step-body { padding: 8px 14px 12px; }
.step-intro { min-height: 42px; align-items: center; padding: 5px 0 10px; }
.step-video video { max-height: 420px; }
.phrase-row { transition: background-color .12s ease, box-shadow .12s ease; }
.phrase-row.is-playing, .video-slot.is-playing { background: color-mix(in srgb, var(--accent) 9%, var(--panel)); box-shadow: inset 3px 0 0 var(--accent); }
.exercise-media-playing { outline: 2px solid var(--accent); outline-offset: 2px; }
.exercise-player-footer { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 18px; padding: 16px 0; border-top: 1px solid var(--border); }
.exercise-player-footer p { margin: 0; }
.exercise-player-footer .primary { flex: 0 0 auto; margin: 0; }

/* Native guide reader */
.guide-heading { align-items: flex-start; }
.guide-source-note { padding-left: 14px; border-left: 3px solid var(--neutral); color: var(--text); font-size: 12px; white-space: nowrap; }
.guide-source-note span { color: var(--muted); }
.guide-subnav { padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.guide-toolbar { position: sticky; top: 55px; z-index: 5; display: grid; grid-template-columns: minmax(190px, 1fr) minmax(220px, 300px) auto; align-items: center; gap: 14px; padding: 10px 0; background: color-mix(in srgb, var(--bg) 94%, transparent); border-bottom: 1px solid var(--border); backdrop-filter: blur(8px); }
.guide-toolbar > div:first-child { display: flex; flex-direction: column; min-width: 0; }
.guide-toolbar .note { display: block; }
.guide-toolbar-actions { display: flex; gap: 6px; }
.guide-toolbar-actions button { margin: 0; white-space: nowrap; }
.guide-reader { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 32px; align-items: start; }
.guide-toc-panel { position: sticky; top: 130px; max-height: calc(100vh - 154px); overflow-y: auto; padding: 22px 18px 24px 0; border-right: 1px solid var(--border); }
.guide-toc-heading { display: flex; align-items: center; justify-content: space-between; }
.guide-toc-heading .eyebrow { margin: 0; }
.guide-toc-toggle { display: none; }
.guide-toc { display: block; }
.guide-toc-row { display: grid; grid-template-columns: minmax(0, 1fr) 28px; align-items: center; gap: 5px; }
.guide-toc-row.search-hidden { display: none; }
.guide-toc-link, .guide-check { border: 0; background: transparent; color: var(--muted); cursor: pointer; }
.guide-toc-link { padding: 7px 5px; border-radius: 5px; text-align: left; font-size: 12px; line-height: 1.3; }
.guide-toc-link:hover, .guide-toc-link.active { background: var(--panel2); color: var(--text); }
.guide-toc-link.active { box-shadow: inset 3px 0 0 var(--accent); }
.guide-check { width: 28px; height: 28px; border-radius: 50%; font-size: 15px; }
.guide-check:hover { background: var(--panel2); }
.guide-toc-row.complete .guide-toc-link { color: var(--text); }
.guide-toc-row.complete .guide-check { color: var(--neutral); }
.guide-content { min-width: 0; max-width: 820px; padding: 12px 0 40px; font-size: 16px; line-height: 1.72; }
.guide-content h2, .guide-content h3 { scroll-margin-top: 135px; letter-spacing: 0; }
.guide-content h2 { margin: 36px 0 12px; padding-top: 18px; border-top: 1px solid var(--border); font-size: 23px; }
.guide-content h2:first-child { margin-top: 12px; border-top: 0; }
.guide-content h3 { margin: 26px 0 8px; color: var(--accent); font-size: 18px; }
.guide-content p { margin: 0 0 15px; }
.guide-content a { color: var(--accent); }
.guide-content .guide-tool-link { display: inline-flex; align-items: center; gap: 6px; text-decoration-thickness: 1px; text-underline-offset: 2px; }
.guide-link-kind { display: inline-block; padding: 2px 5px; border: 1px solid var(--border); border-radius: 4px; background: var(--panel2); color: var(--muted); font-size: 9px; font-weight: 700; line-height: 1.2; text-decoration: none; }
.guide-external-link::after { content: "↗"; margin-left: 3px; font-size: 10px; text-decoration: none; }
.guide-invalid-link { color: var(--muted) !important; text-decoration: line-through; cursor: not-allowed; }
.guide-inline-media-link { display: inline; margin: 0; padding: 0; border: 0; background: transparent; color: var(--accent); font: inherit; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; cursor: pointer; }
.guide-inline-media-link:hover { color: var(--accent2); }
.guide-content audio.guide-media-focus, .guide-content video.guide-media-focus { outline: 3px solid var(--accent); outline-offset: 3px; }
.guide-content ul, .guide-content ol { padding-left: 22px; }
.guide-search-match { border-radius: 4px; background: color-mix(in srgb, var(--warn) 24%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--warn) 24%, transparent); }
.guide-table-scroll { max-width: 100%; margin: 12px 0 20px; overflow-x: auto; }
.guide-content table { width: 100%; border-collapse: collapse; }
.guide-content td { padding: 6px 8px; vertical-align: middle; border-bottom: 1px solid var(--border); }
.guide-content td:first-child { width: 110px; color: var(--muted); }
.guide-content td p { margin: 0; }
.guide-content audio { min-width: 220px; margin: 4px 0; }
.guide-content video { display: block; width: 100%; max-width: 680px; max-height: 70vh; margin: 6px auto 18px; background: #000; border-radius: 6px; }
.guide-media-group { width: 100%; }
.guide-media-disclosure { margin: 8px 0 18px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.guide-media-disclosure summary { min-height: 46px; display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 9px 2px; color: var(--text); cursor: pointer; list-style: none; }
.guide-media-disclosure summary::-webkit-details-marker { display: none; }
.guide-media-disclosure summary::before { content: "▶"; color: var(--accent); font-size: 11px; }
.guide-media-disclosure[open] summary::before { content: "▼"; }
.guide-media-title { flex: 1; font-weight: 650; }
.guide-media-action { color: var(--muted); font-size: 12px; }
.guide-media-disclosure video { margin-top: 4px; }

/* Multi-dimensional voice feedback */
.formant-live-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; margin: 12px 0; overflow: hidden; border: 1px solid var(--border); border-radius: 6px; background: var(--border); }
.formant-live-strip span { min-width: 0; display: flex; flex-direction: column; gap: 2px; padding: 9px 10px; background: var(--panel); }
.formant-live-strip small { color: var(--muted); font-size: 10px; }
.formant-live-strip strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; text-transform: capitalize; }
.formant-chart-legend { display: flex; flex-wrap: wrap; gap: 14px; margin: 5px 0 8px; color: var(--muted); font-size: 11px; }
.formant-chart-legend span::before { content: ""; display: inline-block; width: 18px; height: 3px; margin-right: 6px; vertical-align: middle; background: var(--accent); }
.formant-chart-legend .f2::before { background: var(--male); }
.formant-chart-legend .f0::before { background: var(--neutral); }
.formant-graph { min-height: 300px; }
.measurement-note { margin: 9px 0 0; color: var(--muted); font-size: 13px; }

button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.app-notice { position: fixed; top: 68px; right: 20px; z-index: 30; max-width: min(430px, calc(100vw - 28px)); padding: 12px 14px; border: 1px solid var(--border); border-left: 4px solid var(--warn); border-radius: 7px; background: var(--panel); color: var(--text); box-shadow: 0 12px 30px #10182824; font-size: 13px; line-height: 1.5; }
.ghost.danger { border-color: var(--accent); color: var(--accent); }
a:focus-visible, summary:focus-visible, [tabindex="0"]:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

@media (hover: hover) and (pointer: fine) {
  button:not(:disabled), .pe-file-action, .exercise-card, .vt-layer-toggle { transition: transform 120ms var(--ease-out); }
  button:not(:disabled):active, .pe-file-action:active, .exercise-card:active, .vt-layer-toggle:active { transform: scale(.98); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .app-header, .exercise-player-top, .guide-toolbar, .vt-layer-controls { background: var(--panel); backdrop-filter: none; }
}
@media (prefers-contrast: more) {
  :root { --border: #667085; }
  [data-theme="dark"] { --border: #d0d5dd; }
  .app-header, .exercise-player-top, .guide-toolbar { background: var(--panel); backdrop-filter: none; border-color: var(--text); }
}
@media (max-width: 820px) {
  .app-header { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px 12px; }
  .brand { grid-column: 1; }
  .mobile-nav-toggle { display: block; }
  .app-header nav { display: none; grid-column: 1 / -1; width: 100%; padding-top: 10px; border-top: 1px solid var(--border); }
  .app-header nav.open { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .app-header nav .nav-btn { min-height: 42px; text-align: left; }
  .header-right { grid-column: 1 / -1; margin-left: 0; }
  .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dashboard-grid .stat-card:nth-child(odd) { border-left: 0; }
  .dashboard-grid .stat-card:nth-child(n + 3) { border-top: 1px solid var(--border); }
  .dashboard-columns, .tool-layout { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .feedback-card { min-height: 0; }
  .vt-layer-controls { position: static; grid-template-columns: 1fr 1fr; backdrop-filter: none; }
  .vt-layer-controls fieldset:nth-child(odd) { padding-left: 0; border-left: 0; }
  .vt-layer-controls fieldset { padding-top: 6px; padding-bottom: 6px; }
  .exercise-player-top, .guide-toolbar { position: static; backdrop-filter: none; }
  .section-block { display: block; margin-bottom: 16px; }
  .section-block > h3 { position: static; margin: 13px 0 4px; padding: 0; }
  .exercise-card { min-height: 52px; padding-right: 6px; padding-left: 6px; }
  .exercise-player-layout { grid-template-columns: 1fr; gap: 12px; }
  .exercise-rail { position: static; display: flex; max-height: none; overflow-x: auto; gap: 6px; padding: 8px 0 12px; border-right: 0; border-bottom: 1px solid var(--border); }
  .exercise-rail > .eyebrow { display: none; }
  .exercise-rail-item { flex: 0 0 190px; }
  .guide-reader { grid-template-columns: 1fr; gap: 0; }
  .guide-toc-panel { position: static; max-height: none; padding: 10px 0; border-right: 0; border-bottom: 1px solid var(--border); }
  .guide-toc-toggle { display: block; }
  .guide-toc { display: none; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2px 10px; padding-top: 8px; }
  .guide-toc-panel.open .guide-toc { display: grid; }
}
@media (max-width: 620px) {
  .app-notice { top: 12px; right: 14px; left: 14px; max-width: none; }
  main { padding: 22px 14px 56px; }
  .dashboard-hero { padding: 8px 0 22px; }
  .hero-signal { display: none; }
  .view-heading, .stage-overview { display: block; }
  .search-field { margin-top: 14px; width: 100%; }
  .stage-overview-progress { width: 100%; margin-top: 14px; }
  .analysis-start-grid { grid-template-columns: 1fr; }
  .stage-tabs { width: 100%; }
  .stage-tab { flex: 1 1 0; }
  .analysis-setup, .analysis-dimension-grid { grid-template-columns: 1fr; }
  .practice-score-summary { align-items: flex-start; flex-direction: column; gap: 10px; }
  .practice-evidence { justify-items: start; }
  .practice-evidence small { text-align: left; }
  .analysis-profile-head { align-items: stretch; flex-direction: column; }
  .evidence-badge { width: max-content; }
  .recent-row { grid-template-columns: 70px 80px 1fr; }
  .history-heading { display: grid; gap: 12px; }
  .history-tools { justify-content: flex-start; }
  .history-summary { grid-template-columns: 1fr auto; }
  .history-summary > span:not(.history-summary-value) { grid-column: 1 / -1; }
  .target-preset-bar .note { width: 100%; margin-left: 0; }
  .vt-workspace-heading { display: block; }
  .vt-session-actions { align-items: stretch; margin-top: 14px; }
  .vt-session-actions .note { max-width: none; text-align: left; }
  .vt-layer-controls { grid-template-columns: 1fr; }
  .vt-layer-controls fieldset { padding: 8px 0; border-left: 0; border-top: 1px solid var(--border); }
  .vt-layer-controls fieldset:first-child { border-top: 0; }
  .vt-layer-toggle { flex: 1 1 auto; justify-content: center; }
  .exercise-player-top { grid-template-columns: 1fr auto; gap: 8px; }
  .exercise-player-top > .ghost { grid-column: 1 / -1; width: max-content; }
  .exercise-player-actions .secondary { width: 36px; height: 36px; min-height: 36px; overflow: hidden; padding: 0; color: transparent; }
  .exercise-player-actions .secondary::before { content: "▶"; display: grid; place-items: center; width: 34px; height: 34px; color: var(--text); }
  .exercise-player-actions .secondary[aria-pressed="true"]::before { content: "■"; }
  .exercise-progress { grid-template-columns: 1fr; gap: 6px; }
  .exercise-player-footer { align-items: stretch; flex-direction: column; }
  .exercise-player-footer .primary { width: 100%; }
  .step-summary { grid-template-columns: 28px minmax(0, 1fr) auto; }
  .step-summary::after { grid-column: 3; grid-row: 1; }
  .step-count { display: none; }
  .guide-source-note { display: none; }
  .guide-toolbar { grid-template-columns: 1fr; }
  .guide-toolbar-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .guide-search { margin-top: 0; }
  .guide-toc { grid-template-columns: 1fr; }
  .guide-content { font-size: 16px; line-height: 1.72; }
  .guide-content h2 { font-size: 20px; }
  .guide-content td { display: block; width: 100% !important; border-bottom: 0; }
  .guide-content tr { display: block; padding: 7px 0; border-bottom: 1px solid var(--border); }
  .guide-content audio { min-width: 0; }
  .feedback-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .formant-live-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}