/* ============================================================================
   focus-studio.css — הסטודיו השקט של EZ · /pages/focus-music-heb
   Scoped block `.ez-fstudio` (BEM children) on EZ42 DS v4 (ez42-ui.css).
   Load AFTER ez42-ui.css. Tokens only, logical properties, RTL first / LTR ready.
   Breakpoints are CONTAINER queries on .ez-fstudio (like .ez-arena): the block
   reflows by its own width, so the prototype frame and real viewports agree.
   Zones: .ez-fstudio__studio / __closing / __transport carry data-theme="dark"
   so DS text tokens flip; the canvas itself is --navy (always, in every theme).
   ========================================================================= */

.ez-fstudio { container: fstudio / inline-size; position: relative; font-family: var(--font-sans);
  font-size: var(--fs-body); line-height: var(--lh-body); color: var(--text); background: var(--bg); }
.ez-fstudio *, .ez-fstudio *::before, .ez-fstudio *::after { box-sizing: border-box; }
.ez-fstudio a { color: var(--purple-dark); }
.ez-fstudio a:hover { color: var(--purple); }
.ez-fstudio .ez-icon { inline-size: 20px; block-size: 20px; flex: 0 0 auto; }
.ez-fstudio .ez-icon--sm { inline-size: 16px; block-size: 16px; }
.ez-fstudio__num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; direction: ltr; unicode-bidi: isolate; }

/* ---- STUDIO ZONE (always dark) ------------------------------------------ */
.ez-fstudio__studio { position: relative; background: var(--navy); color: var(--text); }

/* Navbar placeholder: the existing site menu (out of scope, context only) */
.ez-fstudio__nav { border-block-end: 1px solid var(--navy-line); }
.ez-fstudio__nav-inner { max-inline-size: var(--width-page); margin-inline: auto; padding: var(--space-2) var(--space-6);
  min-block-size: 56px; display: flex; align-items: center; gap: var(--space-5); }
.ez-fstudio__logo { inline-size: 32px; block-size: 32px; display: block; }
.ez-fstudio__nav-links { display: flex; gap: var(--space-4); margin-inline-start: auto; font-size: var(--fs-body-sm); font-weight: var(--fw-semibold); }
.ez-fstudio__nav-links a { color: var(--text-muted); text-decoration: none; }
.ez-fstudio__nav-links a[aria-current="page"] { color: var(--text); text-decoration: underline; text-underline-offset: 6px; text-decoration-color: var(--teal); }

/* Hero: the control room */
.ez-fstudio__hero { position: relative; overflow: hidden; padding-block: var(--space-8) var(--space-7);
  background: radial-gradient(60% 55% at 100% 0%, var(--coral-tint) 0%, transparent 70%), var(--navy); }
.ez-fstudio__hero::before { /* acoustic panel: a quiet dot grid */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.35;
  background: radial-gradient(circle at 1px 1px, var(--navy-line) 1px, transparent 1.6px) 0 0 / 28px 28px; }
.ez-fstudio__hero-inner { position: relative; max-inline-size: var(--width-page); margin-inline: auto; padding-inline: var(--space-6);
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: var(--grid-gap-hero); align-items: center; }
.ez-fstudio__hero-copy { display: flex; flex-direction: column; gap: var(--space-4); min-inline-size: 0; }
.ez-fstudio__eyebrow { font-size: var(--fs-eyebrow); font-weight: var(--fw-bold); letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase; color: var(--purple-dark); }
.ez-fstudio__title { margin: 0; font-size: var(--fs-hero); font-weight: var(--fw-black); line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight); color: var(--text); text-wrap: balance; }
.ez-fstudio__subtitle { margin: 0; font-size: var(--fs-body); line-height: var(--lh-relaxed); color: var(--text-soft);
  max-inline-size: 56ch; text-wrap: pretty; }
.ez-fstudio__cta { display: flex; flex-direction: column; align-items: flex-start; gap: var(--space-2); margin-block-start: var(--space-2); }
.ez-fstudio__cta .ez-btn { inline-size: auto; }
.ez-fstudio__cta-hint { font-size: var(--fs-body-sm); color: var(--text-muted); }
.ez-fstudio__why { font-size: var(--fs-body-sm); font-weight: var(--fw-semibold); color: var(--purple-dark);
  text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }

/* Console: display + ON AIR + L/R meters */
.ez-fstudio__console { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas: "display meters" "foot meters"; gap: var(--space-4) var(--space-5); padding: var(--space-5);
  background: var(--navy-soft); border: 1px solid var(--navy-line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card), inset 0 1px 0 var(--border-strong); }
.ez-fstudio__display { grid-area: display; position: relative; overflow: hidden; min-block-size: 116px;
  display: flex; flex-direction: column; justify-content: center; gap: var(--space-1);
  padding: var(--space-4) var(--space-5); background: var(--code-bg); border: 1px solid var(--navy-line);
  border-radius: var(--radius-md); box-shadow: inset 0 2px 10px var(--overlay); color: var(--info-text); }
.ez-fstudio__display::after { content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0.16;
  background: repeating-linear-gradient(to bottom, transparent 0 2px, var(--overlay) 2px 3px); }
.ez-fstudio__display-label { font-size: var(--fs-eyebrow); font-weight: var(--fw-bold); letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase; color: var(--teal); min-block-size: 1.2em; }
.ez-fstudio__display-main { font-size: 1.35rem; font-weight: var(--fw-bold); line-height: 1.3; color: var(--info-text);
  text-shadow: 0 0 14px color-mix(in srgb, var(--teal) 55%, transparent); text-wrap: pretty; }
.ez-fstudio__display-time { font-family: var(--font-mono); font-variant-numeric: tabular-nums; direction: ltr; unicode-bidi: isolate;
  font-size: 1rem; letter-spacing: 0.04em; color: var(--text-soft); min-block-size: 1.4em; align-self: flex-start; }
.ez-fstudio__display--idle .ez-fstudio__display-main { font-size: 1.05rem; font-weight: var(--fw-semibold); color: var(--text-soft); text-shadow: none; }
.ez-fstudio__display--error .ez-fstudio__display-main { font-size: 1.05rem; color: var(--error-text); text-shadow: none; }
.ez-fstudio__console-foot { grid-area: foot; display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.ez-fstudio__console-label { font-family: var(--font-mono); font-size: var(--fs-footnote); letter-spacing: 0.12em; color: var(--text-muted); direction: ltr; }

/* ON AIR: lights, never blinks */
.ez-fstudio__onair { display: inline-flex; align-items: center; gap: var(--space-2); direction: ltr;
  padding: 0.45rem 0.9rem; border-radius: var(--radius-sm); border: 1px solid var(--navy-line); background: var(--navy);
  color: var(--text-light); font-size: 0.8rem; font-weight: var(--fw-black); letter-spacing: 0.2em;
  transition: var(--t-color), box-shadow var(--dur-slow) var(--ease); }
.ez-fstudio__onair::before { content: ""; inline-size: 8px; block-size: 8px; border-radius: 50%; background: currentColor; opacity: 0.45; }
.ez-fstudio__onair.is-lit { background: var(--purple); border-color: var(--purple); color: var(--on-brand);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--purple) 40%, transparent), 0 0 28px var(--stage-glow); }
.ez-fstudio__onair.is-lit::before { opacity: 1; }

/* LED meters. --level is set from data-level="0..12" (quantized in JS). */
.ez-fstudio__meters { grid-area: meters; display: flex; gap: var(--space-3); align-items: flex-end;
  padding: var(--space-3) var(--space-3) var(--space-2); background: var(--navy); border: 1px solid var(--navy-line); border-radius: var(--radius-md); }
.ez-fstudio__meter { display: flex; flex-direction: column; align-items: center; gap: var(--space-2); }
.ez-fstudio__meter-label { font-family: var(--font-mono); font-size: var(--fs-footnote); color: var(--text-muted); direction: ltr; }
.ez-fstudio__led { --level: 0; --seg: 7px; --gap: 4px; --h: calc(12 * (var(--seg) + var(--gap)));
  position: relative; display: block; inline-size: 14px; block-size: var(--h); border-radius: 2px;
  background: repeating-linear-gradient(to top, var(--navy-line) 0 var(--seg), transparent var(--seg) calc(var(--seg) + var(--gap))); }
.ez-fstudio__led::before { content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(to top, var(--teal) 0 var(--seg), transparent var(--seg) calc(var(--seg) + var(--gap)));
  clip-path: inset(calc((1 - var(--level)) * var(--h)) 0 0 0); transition: clip-path 120ms var(--ease); }
.ez-fstudio__led::after { content: ""; position: absolute; inset: 0 0 auto 0; block-size: calc(2 * (var(--seg) + var(--gap)));
  background: repeating-linear-gradient(to top, var(--info-text) 0 var(--seg), transparent var(--seg) calc(var(--seg) + var(--gap)));
  clip-path: inset(calc((1 - var(--level)) * var(--h)) 0 0 0); transition: clip-path 120ms var(--ease); }
.ez-fstudio__led--mini { --seg: 2px; --gap: 1px; inline-size: 6px; border-radius: 1px; }
.ez-fstudio__led[data-level="0"] { --level: 0; } .ez-fstudio__led[data-level="1"] { --level: 0.0833; }
.ez-fstudio__led[data-level="2"] { --level: 0.1667; } .ez-fstudio__led[data-level="3"] { --level: 0.25; }
.ez-fstudio__led[data-level="4"] { --level: 0.3333; } .ez-fstudio__led[data-level="5"] { --level: 0.4167; }
.ez-fstudio__led[data-level="6"] { --level: 0.5; } .ez-fstudio__led[data-level="7"] { --level: 0.5833; }
.ez-fstudio__led[data-level="8"] { --level: 0.6667; } .ez-fstudio__led[data-level="9"] { --level: 0.75; }
.ez-fstudio__led[data-level="10"] { --level: 0.8333; } .ez-fstudio__led[data-level="11"] { --level: 0.9167; }
.ez-fstudio__led[data-level="12"] { --level: 1; }

/* Facts strip: studio labels */
.ez-fstudio__facts { max-inline-size: var(--width-page); margin-inline: auto; padding-inline: var(--space-6); }
.ez-fstudio__facts-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); overflow: hidden;
  border: 1px solid var(--navy-line); border-radius: var(--radius-lg); background: var(--navy-soft); }
.ez-fstudio__fact { display: flex; flex-direction: column; gap: 2px; padding: var(--space-4) var(--space-5);
  box-shadow: 1px 0 0 var(--navy-line), 0 1px 0 var(--navy-line); }
.ez-fstudio__fact-value { font-size: 1.5rem; font-weight: var(--fw-black); color: var(--text); line-height: 1.2;
  font-variant-numeric: tabular-nums; unicode-bidi: isolate; }
.ez-fstudio__fact-label { display: inline-flex; align-items: center; gap: 6px; font-size: var(--fs-body-sm); color: var(--text-muted); }
.ez-fstudio__fact-label::before { content: ""; inline-size: 6px; block-size: 6px; border-radius: 50%; background: var(--teal); flex: 0 0 auto; }

/* Library */
.ez-fstudio__library { max-inline-size: var(--width-page); margin-inline: auto; padding: var(--space-7) var(--space-6) var(--space-8); }
.ez-fstudio__section-head { display: flex; flex-direction: column; gap: var(--space-2); margin-block-end: var(--space-5); max-inline-size: 70ch; }
.ez-fstudio__h2 { margin: 0; font-size: var(--fs-h2); font-weight: var(--fw-bold); line-height: var(--lh-heading); color: var(--text); }
.ez-fstudio__intro { margin: 0; color: var(--text-soft); line-height: var(--lh-relaxed); text-wrap: pretty; }
.ez-fstudio__grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-4); margin: 0; padding: 0; list-style: none; }

/* Track card = channel strip */
.ez-fstudio__track { position: relative; display: flex; flex-direction: column; gap: var(--space-3); min-inline-size: 0;
  padding: var(--space-4); background: var(--navy-soft); border: 1px solid var(--navy-line); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: var(--t-card-lift), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease); }
.ez-fstudio__track:hover, .ez-fstudio__track.is-hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); border-color: var(--border-strong); }
.ez-fstudio__track:has(.ez-fstudio__play:focus-visible), .ez-fstudio__track.is-focus { outline: 2px solid var(--focus-color); outline-offset: 2px; }
.ez-fstudio__track:has(.ez-fstudio__play:focus-visible) .ez-fstudio__play { outline: none; }
.ez-fstudio__track.is-playing { border-color: var(--purple); background: var(--selected-bg);
  box-shadow: 0 0 0 1px var(--purple), 0 8px 28px color-mix(in srgb, var(--purple) 22%, transparent); }
.ez-fstudio__track.is-paused { border-color: var(--purple); box-shadow: 0 0 0 1px color-mix(in srgb, var(--purple) 45%, transparent); }
.ez-fstudio__track.is-loading .ez-fstudio__wave, .ez-fstudio__track.is-loading .ez-fstudio__cover { opacity: 0.55; }
.ez-fstudio__track.is-error { border-color: var(--error-border); }
.ez-fstudio__track-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); min-block-size: 24px; }
.ez-fstudio__track-num { display: inline-flex; align-items: center; gap: 7px; font-family: var(--font-mono); font-size: var(--fs-body-sm);
  font-weight: var(--fw-bold); letter-spacing: 0.08em; color: var(--text-muted); direction: ltr; unicode-bidi: isolate; }
.ez-fstudio__track-num::before { content: ""; inline-size: 7px; block-size: 7px; border-radius: 50%; background: var(--navy-line);
  box-shadow: inset 0 1px 1px var(--overlay); transition: var(--t-color), box-shadow var(--dur) var(--ease); }
.ez-fstudio__track.is-playing .ez-fstudio__track-num { color: var(--purple-dark); }
.ez-fstudio__track.is-playing .ez-fstudio__track-num::before { background: var(--purple); box-shadow: 0 0 10px var(--stage-glow); }
.ez-fstudio__track.is-paused .ez-fstudio__track-num::before { background: var(--purple-dark); }
.ez-fstudio__track.is-error .ez-fstudio__track-num::before { background: var(--error-border); }
.ez-fstudio__cover { position: relative; aspect-ratio: 1; overflow: hidden; background: var(--navy);
  border: 1px solid var(--navy-line); border-radius: var(--radius-md); transition: opacity var(--dur) var(--ease); }
.ez-fstudio__cover img { display: block; inline-size: 100%; block-size: 100%; object-fit: cover; }
.ez-fstudio__track-body { display: flex; flex-direction: column; gap: var(--space-1); min-inline-size: 0; }
.ez-fstudio__track-title { margin: 0; font-size: var(--fs-h3); font-weight: var(--fw-bold); line-height: var(--lh-heading); color: var(--text); }
.ez-fstudio__track-en { display: block; font-size: var(--fs-footnote); letter-spacing: 0.03em; color: var(--text-muted); direction: ltr; unicode-bidi: isolate; text-align: start; }
.ez-fstudio__tags { display: flex; flex-wrap: wrap; gap: var(--space-1); margin-block-start: var(--space-1); }
.ez-fstudio__tag { font-size: var(--fs-footnote); font-weight: var(--fw-semibold); line-height: 1.5; color: var(--text-soft);
  border: 1px solid var(--navy-line); border-radius: var(--radius-pill); padding: 0.1rem 0.55rem; white-space: nowrap; }
.ez-fstudio__specs { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-2);
  padding-block-start: var(--space-2); border-block-start: 1px dashed var(--navy-line); font-size: var(--fs-footnote); color: var(--text-muted); }
.ez-fstudio__spec-key { font-weight: var(--fw-semibold); }
.ez-fstudio__spec-dur { font-family: var(--font-mono); font-variant-numeric: tabular-nums; direction: ltr; unicode-bidi: isolate; }
.ez-fstudio__track-desc { margin: 0; flex: 1 1 auto; font-size: var(--fs-body-sm); line-height: 1.6; color: var(--text-soft); text-wrap: pretty; }
.ez-fstudio__track-error { margin: 0; font-size: var(--fs-footnote); line-height: 1.5; color: var(--error-text); }
.ez-fstudio__track-foot { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-3); align-items: center; }
.ez-fstudio__wave { display: flex; align-items: flex-end; gap: 2px; block-size: 36px; padding-block: 2px; direction: ltr; transition: opacity var(--dur) var(--ease); }
.ez-fstudio__bar { flex: 1 1 0; min-inline-size: 0; border-radius: 1px; background: var(--navy-line); transition: background-color var(--dur-fast) var(--ease); }
.ez-fstudio__bar.is-on { background: var(--teal); }
.ez-fstudio__bar.is-head { background: var(--info-text); }
.ez-fstudio__play { -webkit-appearance: none; appearance: none; position: relative; display: inline-flex; align-items: center; justify-content: center;
  inline-size: 48px; block-size: 48px; padding: 0; border-radius: var(--radius-circle); border: 2px solid var(--navy-line);
  background: var(--navy); color: var(--text); cursor: pointer; transition: var(--t-color), transform var(--dur-fast) var(--ease); }
.ez-fstudio__play:hover { border-color: var(--purple); color: var(--purple-dark); }
.ez-fstudio__play:focus-visible { outline: 2px solid var(--focus-color); outline-offset: 2px; }
.ez-fstudio__track.is-playing .ez-fstudio__play { background: var(--purple); border-color: var(--purple); color: var(--on-brand); }
.ez-fstudio__track.is-paused .ez-fstudio__play { border-color: var(--purple); color: var(--purple-dark); }
.ez-fstudio__track.is-error .ez-fstudio__play { border-color: var(--error-border); color: var(--error-text); }
.ez-fstudio__track.is-loading .ez-fstudio__play { color: transparent; }
.ez-fstudio__track.is-loading .ez-fstudio__play::after { content: ""; position: absolute; inset: 9px; border-radius: 50%;
  border: 2px solid var(--navy-line); border-block-start-color: var(--teal); animation: ez-spin 0.9s linear infinite; }

/* Zone handoff: the console's front edge, its shadow on the paper, and one cable */
.ez-fstudio__edge { position: relative; block-size: 22px; background: linear-gradient(to bottom, var(--navy-soft), var(--navy-line));
  border-block-start: 1px solid var(--border-strong); }
.ez-fstudio__edge::after { content: ""; position: absolute; inset-inline: 0; inset-block-start: 100%; block-size: 20px; pointer-events: none;
  background: linear-gradient(to bottom, var(--stage-shade), transparent); }
.ez-fstudio__edge--top { background: linear-gradient(to top, var(--navy-soft), var(--navy-line)); border-block-start: 0; border-block-end: 1px solid var(--border-strong); }
.ez-fstudio__edge--top::after { inset-block-start: auto; inset-block-end: 100%; background: linear-gradient(to top, var(--stage-shade), transparent); }

/* ---- NOTEBOOK ZONE (light, the regular DS page) --------------------------- */
.ez-fstudio__notebook { position: relative; background: var(--bg); color: var(--text); padding-block-start: var(--space-6); }
.ez-fstudio__cable { position: absolute; inset-block-start: 0; inset-inline-start: max(var(--space-6), calc((100% - var(--width-page)) / 2 + var(--space-6)));
  inline-size: 3px; block-size: 84px; margin-inline-start: 10px; border-radius: 0 0 2px 2px;
  background: linear-gradient(to bottom, var(--navy-line), var(--teal)); }
.ez-fstudio__cable::after { content: ""; position: absolute; inset-block-end: -6px; inset-inline-start: 50%; margin-inline-start: -6px;
  inline-size: 12px; block-size: 12px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px var(--teal-tint); }
.ez-fstudio__nb-section { max-inline-size: var(--width-page); margin-inline: auto; padding: var(--space-7) var(--space-6); }
.ez-fstudio__nb-section--first { padding-block-start: calc(var(--space-8) + var(--space-5)); }
.ez-fstudio__nb-head { display: flex; flex-direction: column; gap: var(--space-2); max-inline-size: var(--width-reading); margin-block-end: var(--space-5); }
.ez-fstudio__nb-head .ez-fstudio__intro { color: var(--text-soft); }
.ez-fstudio__pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--grid-gap); }

/* Principle cards: studio rules on the wall (on .ez-card) */
.ez-fstudio__rules { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--grid-gap); }
.ez-fstudio__rule { gap: var(--space-3); padding: var(--space-5) var(--space-6); }
.ez-fstudio__rule-top { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.ez-fstudio__rule-icon { inline-size: 44px; block-size: 44px; border-radius: var(--radius-md); background: var(--purple-tint); color: var(--purple-deep);
  display: inline-flex; align-items: center; justify-content: center; }
.ez-fstudio__rule-num { font-family: var(--font-mono); font-size: var(--fs-footnote); letter-spacing: 0.1em; color: var(--text-light); direction: ltr; }
.ez-fstudio__rule-title { margin: 0; font-size: var(--fs-h3); font-weight: var(--fw-bold); line-height: var(--lh-heading); color: var(--text); }
.ez-fstudio__rule-text { margin: 0; font-size: var(--fs-body-sm); line-height: 1.7; color: var(--text-soft); text-wrap: pretty; }

/* Tips */
.ez-fstudio__tips { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 var(--grid-gap); counter-reset: tip; }
.ez-fstudio__tip { counter-increment: tip; display: grid; grid-template-columns: 2.25rem minmax(0, 1fr); gap: var(--space-3); align-items: start;
  padding-block: var(--space-4); border-block-end: 1px solid var(--border); }
.ez-fstudio__tip::before { content: counter(tip, decimal-leading-zero); font-family: var(--font-mono); font-size: var(--fs-body-sm); font-weight: var(--fw-bold);
  line-height: var(--lh-body); color: var(--purple-dark); direction: ltr; }
.ez-fstudio__tip p { margin: 0; color: var(--text-soft); line-height: var(--lh-body); text-wrap: pretty; }
.ez-fstudio__tip strong { color: var(--text); }

/* Classroom / home, in-activity */
.ez-fstudio__place { gap: var(--space-3); }
.ez-fstudio__place-title { margin: 0; font-size: var(--fs-h3); font-weight: var(--fw-bold); color: var(--text); }
.ez-fstudio__place p { margin: 0; color: var(--text-soft); line-height: var(--lh-body); text-wrap: pretty; }
.ez-fstudio__inact { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: var(--grid-gap); align-items: center; }
.ez-fstudio__inact p { margin: 0; color: var(--text-soft); line-height: var(--lh-relaxed); text-wrap: pretty; max-inline-size: 60ch; }
.ez-fstudio__shot { aspect-ratio: 16 / 10; overflow: hidden; border-radius: var(--radius-lg); border: 1px solid var(--border);
  background: var(--surface); box-shadow: var(--shadow-card); }

/* Studio sheet */
.ez-fstudio__sheet { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: var(--space-4); margin-block-start: var(--space-5); }
.ez-fstudio__sheet .ez-stat__value { color: var(--text); }
.ez-fstudio__sheet .ez-stat__label { text-transform: none; letter-spacing: 0; font-size: var(--fs-body-sm); font-weight: var(--fw-semibold); }
.ez-fstudio__sheet-text { margin: 0; max-inline-size: var(--width-reading); color: var(--text-soft); line-height: var(--lh-relaxed); text-wrap: pretty; }

/* FAQ + sources */
.ez-fstudio__faq { display: flex; flex-direction: column; gap: var(--space-3); max-inline-size: var(--width-reading); }
.ez-fstudio__faq .ez-disclosure__body p { margin: 0; color: var(--text-soft); line-height: var(--lh-body); text-wrap: pretty; }
.ez-fstudio__sources { margin: 0; padding-inline-start: 1.4rem; max-inline-size: var(--width-reading); display: flex; flex-direction: column; gap: var(--space-2);
  font-size: var(--fs-body-sm); line-height: 1.7; color: var(--text-muted); }
.ez-fstudio__sources li::marker { color: var(--text-light); font-variant-numeric: tabular-nums; }
.ez-fstudio__sources cite { font-style: italic; }
.ez-fstudio__sources a { color: var(--purple-dark); text-decoration: underline; text-underline-offset: 3px; overflow-wrap: anywhere; }
.ez-fstudio__sources .ez-fstudio__src { direction: ltr; unicode-bidi: isolate; display: inline-block; text-align: left; }

/* ---- CLOSING BAND (dark again) ------------------------------------------ */
.ez-fstudio__closing { background: var(--navy); color: var(--text); }
.ez-fstudio__closing-inner { max-inline-size: var(--width-page); margin-inline: auto; padding: var(--space-8) var(--space-6);
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-5); }
.ez-fstudio__closing-copy { display: flex; flex-direction: column; gap: var(--space-2); max-inline-size: 48ch; }
.ez-fstudio__closing-copy p { margin: 0; color: var(--text-soft); line-height: var(--lh-relaxed); }
.ez-fstudio__closing .ez-btn { inline-size: auto; }

/* ---- TRANSPORT BAR (sticky, appears on first play) ---------------------- */
.ez-fstudio__transport { position: sticky; inset-block-end: 0; z-index: var(--z-sticky); background: var(--navy-soft); color: var(--text);
  border-block-start: 1px solid var(--navy-line); box-shadow: 0 -10px 30px var(--overlay); animation: ez-pop-in var(--dur-slow) var(--ease-out); }
.ez-fstudio__transport-inner { max-inline-size: var(--width-page); margin-inline: auto; padding: var(--space-3) var(--space-6);
  display: grid; grid-template-columns: minmax(0, 1.3fr) auto minmax(180px, 260px) auto auto;
  grid-template-areas: "now controls volume timer tmeters"; align-items: center; gap: var(--space-5); }
.ez-fstudio__now { grid-area: now; display: flex; align-items: center; gap: var(--space-3); min-inline-size: 0; }
.ez-fstudio__now-cover { inline-size: 48px; block-size: 48px; flex: 0 0 auto; overflow: hidden; border-radius: var(--radius-sm); border: 1px solid var(--navy-line); background: var(--navy); }
.ez-fstudio__now-cover img { display: block; inline-size: 100%; block-size: 100%; object-fit: cover; }
.ez-fstudio__now-text { display: flex; flex-direction: column; min-inline-size: 0; }
.ez-fstudio__now-title { font-weight: var(--fw-bold); color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ez-fstudio__now-title .ez-fstudio__num { color: var(--text-muted); font-size: var(--fs-body-sm); }
.ez-fstudio__now-time { font-family: var(--font-mono); font-size: var(--fs-footnote); letter-spacing: 0.04em; color: var(--teal);
  font-variant-numeric: tabular-nums; direction: ltr; unicode-bidi: isolate; align-self: flex-start; }
.ez-fstudio__controls { grid-area: controls; display: flex; align-items: center; gap: var(--space-2); direction: ltr; }
.ez-fstudio__tbtn { -webkit-appearance: none; appearance: none; display: inline-flex; align-items: center; justify-content: center; padding: 0;
  inline-size: var(--tap-min); block-size: var(--tap-min); border-radius: var(--radius-circle); border: 1px solid transparent;
  background: transparent; color: var(--text); cursor: pointer; transition: var(--t-color); }
.ez-fstudio__tbtn:hover { background: var(--hover-veil); }
.ez-fstudio__tbtn:focus-visible { outline: 2px solid var(--focus-color); outline-offset: 2px; }
.ez-fstudio__tbtn--main { inline-size: 52px; block-size: 52px; background: var(--text); border-color: var(--text); color: var(--navy); }
.ez-fstudio__tbtn--main:hover { background: var(--text-soft); border-color: var(--text-soft); }
.ez-fstudio__tbtn--main .ez-icon { inline-size: 22px; block-size: 22px; }
.ez-fstudio__tbtn--toggle[aria-pressed="true"] { color: var(--purple-dark); background: var(--selected-bg); border-color: var(--purple); }
.ez-fstudio__tbtn--sm { inline-size: 36px; block-size: 36px; }
.ez-fstudio__tbtn--sm .ez-icon { inline-size: 16px; block-size: 16px; }

/* Volume fader with the sweet-spot zone (0–35). LTR: low is always at the left, like a console fader. */
.ez-fstudio__volume { grid-area: volume; display: flex; align-items: center; gap: var(--space-2); min-inline-size: 0; }
.ez-fstudio__volume > .ez-icon { color: var(--text-muted); }
.ez-fstudio__fader-wrap { flex: 1 1 auto; min-inline-size: 0; display: flex; flex-direction: column; gap: 0; }
.ez-fstudio__fader { position: relative; block-size: var(--tap-min); display: flex; align-items: center; direction: ltr; }
.ez-fstudio__fader-zone { position: absolute; inset-inline-start: 0; inline-size: 35%; block-size: 6px; border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--teal) 38%, transparent); pointer-events: none; }
.ez-fstudio__fader-zone::after { content: ""; position: absolute; inset-inline-end: -1px; inset-block: -4px; inline-size: 2px; border-radius: 1px; background: var(--teal); }
.ez-fstudio__fader-mark { position: absolute; inset-block-start: calc(50% + 8px); inset-inline-start: 0; inline-size: 35%; text-align: center;
  font-size: 0.65rem; font-weight: var(--fw-bold); letter-spacing: 0.04em; color: var(--teal); pointer-events: none; direction: rtl; }
.ez-fstudio__range { -webkit-appearance: none; appearance: none; position: relative; inline-size: 100%; block-size: var(--tap-min); margin: 0;
  background: transparent; cursor: pointer; }
.ez-fstudio__range::-webkit-slider-runnable-track { block-size: 6px; border-radius: var(--radius-pill); background: var(--navy-line); }
.ez-fstudio__range::-moz-range-track { block-size: 6px; border-radius: var(--radius-pill); background: var(--navy-line); }
.ez-fstudio__range::-webkit-slider-thumb { -webkit-appearance: none; inline-size: 22px; block-size: 22px; margin-block-start: -8px; border-radius: 50%;
  background: var(--teal); border: 2px solid var(--navy); box-shadow: 0 0 0 1px var(--teal); transition: background-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease); }
.ez-fstudio__range::-moz-range-thumb { inline-size: 22px; block-size: 22px; border-radius: 50%; background: var(--teal); border: 2px solid var(--navy); box-shadow: 0 0 0 1px var(--teal); }
.ez-fstudio__range:focus-visible { outline: 2px solid var(--focus-color); outline-offset: 2px; border-radius: var(--radius-sm); }
.ez-fstudio__volume.is-above .ez-fstudio__range::-webkit-slider-thumb { background: var(--text-light); box-shadow: 0 0 0 1px var(--text-light); }
.ez-fstudio__volume.is-above .ez-fstudio__range::-moz-range-thumb { background: var(--text-light); box-shadow: 0 0 0 1px var(--text-light); }
.ez-fstudio__volume.is-above .ez-fstudio__fader-mark { color: var(--text-muted); }
.ez-fstudio__volume-hint { font-size: var(--fs-footnote); line-height: 1.4; color: var(--text-muted); min-block-size: 0; }
.ez-fstudio__volume-hint:empty { display: none; }

/* Focus timer */
.ez-fstudio__timer { grid-area: timer; display: flex; align-items: center; gap: var(--space-2); }
.ez-fstudio__timer-field { position: relative; display: inline-flex; align-items: center; }
.ez-fstudio__timer-field > .ez-icon { position: absolute; inset-inline-start: 0.7rem; color: var(--text-muted); pointer-events: none; }
.ez-fstudio__timer-field::after { content: "\25BE"; position: absolute; inset-inline-end: 0.7rem; color: var(--text-light); pointer-events: none; }
.ez-fstudio__timer-select { -webkit-appearance: none; appearance: none; font-family: var(--font-sans); font-size: var(--fs-body-sm); font-weight: var(--fw-semibold);
  color: var(--text); background: var(--navy); border: 1px solid var(--navy-line); border-radius: var(--radius-md); min-block-size: var(--tap-min);
  padding-inline: 2.4rem 2rem; cursor: pointer; transition: var(--t-color); }
.ez-fstudio__timer-select:hover { border-color: var(--border-strong); }
.ez-fstudio__timer-select:focus-visible { outline: 2px solid var(--focus-color); outline-offset: 2px; }
.ez-fstudio__timer-run { display: inline-flex; align-items: center; gap: var(--space-2); min-block-size: var(--tap-min); padding-inline: 0.8rem 0.25rem;
  border: 1px solid var(--purple); border-radius: var(--radius-md); background: var(--selected-bg); color: var(--purple-dark);
  font-size: var(--fs-body-sm); font-weight: var(--fw-semibold); white-space: nowrap; }
.ez-fstudio__timer-run .ez-fstudio__num { color: var(--text); font-weight: var(--fw-bold); }
.ez-fstudio__tmeters { grid-area: tmeters; display: flex; gap: 4px; align-items: flex-end; padding: 4px; border: 1px solid var(--navy-line); border-radius: var(--radius-sm); background: var(--navy); }

/* Timer-ended notice: soft, no sound */
.ez-fstudio__notice { max-inline-size: var(--width-page); margin-inline: auto; padding: var(--space-3) var(--space-6) 0; }
.ez-fstudio__notice-inner { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-2) var(--space-2) var(--space-2) var(--space-4);
  padding-inline: var(--space-4) var(--space-2); background: var(--navy); border: 1px solid var(--navy-line); border-radius: var(--radius-md);
  color: var(--text-soft); font-size: var(--fs-body-sm); line-height: 1.5; }
.ez-fstudio__notice-inner > .ez-icon { color: var(--teal); }
.ez-fstudio__notice-inner > span { flex: 1 1 auto; }

/* ---- STATES BOARD (prototype only; not shipped) -------------------------- */
.ez-fstudio__board { max-inline-size: var(--width-page); margin-inline: auto; padding: 0 var(--space-6) var(--space-8); }
.ez-fstudio__board-head { display: flex; align-items: center; gap: var(--space-3); margin-block-end: var(--space-4); padding-block-start: var(--space-5);
  border-block-start: 1px dashed var(--navy-line); color: var(--text-muted); font-size: var(--fs-body-sm); font-weight: var(--fw-semibold); }
.ez-fstudio__board-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--space-4); align-items: start; }
.ez-fstudio__specimen { display: flex; flex-direction: column; gap: var(--space-2); }
.ez-fstudio__specimen-label { font-family: var(--font-mono); font-size: var(--fs-footnote); color: var(--text-muted); letter-spacing: 0.06em; }
.ez-fstudio__board-meters { display: flex; flex-wrap: wrap; gap: var(--space-5); margin-block-start: var(--space-5); }
.ez-fstudio__board-meters .ez-fstudio__meters { align-self: flex-start; }

/* ---- REDUCED MOTION ----------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .ez-fstudio *, .ez-fstudio *::before, .ez-fstudio *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}
.ez-fstudio.is-reduced *, .ez-fstudio.is-reduced *::before, .ez-fstudio.is-reduced *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }

/* ---- CONTAINER BREAKPOINTS --------------------------------------------- */
@container fstudio (max-width: 1023px) {
  .ez-fstudio__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ez-fstudio__rules { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ez-fstudio__sheet { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ez-fstudio__transport-inner { grid-template-columns: minmax(0, 1fr) auto auto; grid-template-areas: "now controls tmeters" "volume timer tmeters"; gap: var(--space-3) var(--space-5); }
}
@container fstudio (max-width: 767px) {
  .ez-fstudio__nav-inner, .ez-fstudio__hero-inner, .ez-fstudio__facts, .ez-fstudio__library, .ez-fstudio__nb-section, .ez-fstudio__closing-inner,
  .ez-fstudio__transport-inner, .ez-fstudio__notice, .ez-fstudio__board { padding-inline: var(--space-4); }
  .ez-fstudio__hero { padding-block: var(--space-6) var(--space-5); }
  .ez-fstudio__hero-inner { grid-template-columns: minmax(0, 1fr); gap: var(--space-5); }
  .ez-fstudio__title { font-size: 2.1rem; }
  .ez-fstudio__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ez-fstudio__facts-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ez-fstudio__rules, .ez-fstudio__pair, .ez-fstudio__inact, .ez-fstudio__tips { grid-template-columns: minmax(0, 1fr); }
  .ez-fstudio__sheet { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ez-fstudio__nb-section { padding-block: var(--space-6); }
  .ez-fstudio__closing-inner { padding-block: var(--space-7); }
  .ez-fstudio__cable { margin-inline-start: 6px; }
  /* SPDGAP-FSFAB: keep the transport controls clear of the site feedback button (fixed, 48px, 20px from the left) */
  .ez-fstudio__transport-inner { padding-left: 80px; }
}
@container fstudio (max-width: 559px) {
  .ez-fstudio__nav-links a:not([aria-current="page"]) { display: none; }
  .ez-fstudio__title { font-size: var(--fs-hero-mobile); }
  .ez-fstudio__cta { align-items: stretch; }
  .ez-fstudio__cta .ez-btn { inline-size: 100%; }
  .ez-fstudio__console { padding: var(--space-4); gap: var(--space-3) var(--space-4); }
  .ez-fstudio__display { min-block-size: 100px; padding: var(--space-3) var(--space-4); }
  .ez-fstudio__display-main { font-size: 1.15rem; }
  .ez-fstudio__console-label { display: none; }
  /* channel strips lie down: one column, cover at the start, waveform + play below */
  .ez-fstudio__grid { grid-template-columns: minmax(0, 1fr); }
  .ez-fstudio__track { display: grid; grid-template-columns: 84px minmax(0, 1fr); grid-template-areas: "cover head" "cover body" "cover specs" "desc desc" "err err" "foot foot";
    gap: var(--space-2) var(--space-3); padding: var(--space-3) var(--space-4); align-items: start; }
  .ez-fstudio__cover { grid-area: cover; }
  .ez-fstudio__track-head { grid-area: head; min-block-size: 0; }
  .ez-fstudio__track-body { grid-area: body; }
  .ez-fstudio__track-title { font-size: 1.05rem; }
  .ez-fstudio__specs { grid-area: specs; border: 0; padding: 0; }
  .ez-fstudio__track-desc { grid-area: desc; }
  .ez-fstudio__track-error { grid-area: err; }
  .ez-fstudio__track-foot { grid-area: foot; }
  .ez-fstudio__wave { block-size: 30px; }
  /* transport: two compact rows, no meters */
  .ez-fstudio__transport-inner { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "now controls" "volume timer"; gap: var(--space-2) var(--space-3); padding-block: var(--space-2) var(--space-3); }
  .ez-fstudio__tmeters { display: none; }
  .ez-fstudio__now-cover { inline-size: 40px; block-size: 40px; }
  .ez-fstudio__controls { gap: 0; }
  .ez-fstudio__tbtn--main { inline-size: var(--tap-min); block-size: var(--tap-min); }
  .ez-fstudio__timer-select { padding-inline: 2.2rem 1.6rem; font-size: var(--fs-footnote); }
  .ez-fstudio__sheet { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ez-fstudio__board-grid { grid-template-columns: minmax(0, 1fr); }
}

/* ---- PROTOTYPE CHROME (designer switcher + viewport frame; not shipped) --- */
.ez-fstudio-frame { background: var(--border); min-block-size: 100vh; }
.ez-fstudio-frame[data-viewport="fluid"] { background: transparent; min-block-size: 0; }
.ez-fstudio-frame[data-viewport="desktop"] .ez-fstudio { max-inline-size: 1280px; margin-inline: auto; box-shadow: var(--shadow-overlay); }
.ez-fstudio-frame[data-viewport="tablet"] .ez-fstudio { max-inline-size: 834px; margin-inline: auto; box-shadow: var(--shadow-overlay); }
.ez-fstudio-frame[data-viewport="phone"] .ez-fstudio { max-inline-size: 390px; margin-inline: auto; box-shadow: var(--shadow-overlay); }
.ez-fstudio-proto { position: sticky; inset-block-start: 0; z-index: calc(var(--z-sticky) + 5); background: var(--surface); color: var(--text);
  border-block-end: 1px solid var(--border); font-family: var(--font-sans); box-shadow: var(--shadow-card); }
.ez-fstudio-proto__inner { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2) var(--space-5); padding: var(--space-2) var(--space-4); font-size: var(--fs-footnote); }
.ez-fstudio-proto__title { font-weight: var(--fw-black); color: var(--purple-dark); letter-spacing: 0.02em; }
.ez-fstudio-proto__group { display: flex; align-items: center; gap: var(--space-2); }
.ez-fstudio-proto__label { font-weight: var(--fw-bold); color: var(--text-muted); font-size: 0.7rem; letter-spacing: var(--ls-eyebrow); }
.ez-fstudio-proto__seg { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; background: var(--surface); }
.ez-fstudio-proto__btn { -webkit-appearance: none; appearance: none; border: 0; background: transparent; color: var(--text-soft); font: inherit; font-weight: var(--fw-semibold);
  padding: 0.3rem 0.65rem; min-block-size: 30px; cursor: pointer; border-inline-start: 1px solid var(--border); transition: var(--t-color); white-space: nowrap; }
.ez-fstudio-proto__btn:first-child { border-inline-start: 0; }
.ez-fstudio-proto__btn:hover { background: var(--border-soft); }
.ez-fstudio-proto__btn[aria-pressed="true"] { background: var(--purple); color: var(--on-brand); }
.ez-fstudio-proto__btn:focus-visible { outline: 2px solid var(--focus-color); outline-offset: -2px; }