/* Shared tokens for final-state components; geometry ratios remain computed. */
.studio{
 --bg:#111411;--surface:#181c18;--panel:var(--surface);--surface-2:#1f241f;
 --border:#2c322b;--border-subtle:#232822;--text:#eef1ea;--text-2:#a9afa3;--text-3:#929e94;
 --text-disabled:#5c6258;--accent:#c8f169;--on-accent:#12160f;
 --muted:var(--text-2);--text-soft:var(--text-3);--green:var(--accent);
 --warn:#f2b866;--warn-bg:rgba(242,184,102,.08);--warn-border:rgba(242,184,102,.35);
 --roll-black:#151e17;--roll-white:#1a241b;
 --font:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
 --fs-tick:12px;--fs-xs:13px;--fs-sm:14px;--fs-base:16px;--fs-lg:18px;--fs-h3:20px;
 --lh-body:1.6;--lh-tight:1.45;--lh-head:1.1;
 --s1:4px;--s2:8px;--s3:12px;--s4:16px;--s5:24px;--s6:32px;--s7:48px;--s8:64px;--s9:96px;
 --r-sm:10px;--r-md:14px;--stroke:1px;--focus-ring:2px;--touch:44px;--icon:20px;
 --track-height:4px;--progress-height:3px;--thumb:18px;--overview-height:20px;
 --motion-time:1.2s;--disabled-opacity:.6;--copy-width:65ch;
}
.studio button,.studio h1,.studio h2,.studio h3,.studio .choose-button{font-weight:600}
.studio p{max-width:var(--copy-width)}
.studio .intro,.studio .privacy{text-wrap:balance}
.studio .title-dot{color:var(--text)}
.studio .mark{background:var(--surface-2);color:var(--text)}
.studio .field-error{display:flex;align-items:flex-start;gap:var(--s2);margin:var(--s3) 0 0;padding:var(--s3);border:var(--stroke) solid var(--warn-border);border-radius:var(--r-sm);color:var(--warn);background:var(--warn-bg);font-size:var(--fs-sm);line-height:var(--lh-tight);order:2}
.studio .field-error b{overflow-wrap:anywhere}
.studio .field-error .icon{width:var(--icon);height:var(--icon);flex-shrink:0}
.studio .drop.has-error{border-color:var(--warn-border)}
.studio .field-error[hidden],.studio .overview[hidden],.studio #reset-filters[hidden],.studio #progress[hidden]{display:none}
.studio .status-row{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);order:4;margin-top:var(--s3)}
.studio .status-row:has(#status:empty):has(#cancel[hidden]){display:none}
.studio .status-row #status{order:0;margin:0;font-size:var(--fs-xs);line-height:var(--lh-tight)}
.studio .status-row #cancel{order:1;flex-shrink:0;width:auto;min-width:0;min-height:var(--touch);margin:0;padding:0 var(--s1);border:0;background:transparent;color:var(--text-2);font-size:var(--fs-xs);text-decoration:underline;text-underline-offset:var(--s1)}
.studio #progress{order:5;height:var(--progress-height);border-radius:var(--r-sm);background:var(--border);margin-top:var(--s2);overflow:hidden}
.studio #progress>span{display:block;height:100%;width:var(--progress,0%);background:var(--accent)}
.studio #progress.indeterminate>span{width:35%;animation:progress-slide var(--motion-time) ease-in-out infinite}
@keyframes progress-slide{from{transform:translateX(-100%)}to{transform:translateX(300%)}}
.studio.is-busy .drop .choose-button,.studio.has-source .drop .choose-button{background:transparent;box-shadow:none;white-space:nowrap}
.studio .drop.busy{opacity:1;cursor:not-allowed}
.studio .drop.busy .choose-button,.studio .drop.busy small{color:var(--text-disabled)}
.studio .secondary-actions button:disabled{color:var(--text-disabled);border-color:var(--border-subtle);background:transparent;cursor:not-allowed;opacity:1;text-decoration:none}
.studio .secondary-actions button:disabled .icon{color:inherit}
.studio .roll-more{width:var(--icon);height:var(--icon)}
.studio .overview{margin-top:var(--s3)}
.studio .overview>label{display:flex;justify-content:space-between;color:var(--text-3);font-size:var(--fs-xs);line-height:var(--lh-tight)}
.studio .overview-control{position:relative;height:var(--touch);display:flex;align-items:center}
.studio #overview-canvas{width:100%;height:var(--overview-height);border-radius:var(--s1);display:block;pointer-events:none}
.studio #overview-seek{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;touch-action:pan-y}
.studio .overview-control:focus-within{outline:var(--focus-ring) solid var(--accent);outline-offset:var(--s1);border-radius:var(--r-sm)}
.studio .controls{grid-template-columns:1fr;gap:var(--s5)}
.studio .controls output{color:var(--text);font-size:var(--fs-sm);white-space:nowrap}
.studio .controls label>span,.studio .transpose-control>label{display:flex;align-items:center;justify-content:space-between;gap:var(--s2);font-size:var(--fs-sm)}
.studio .controls small{display:block;color:var(--text-2);font-size:var(--fs-xs);line-height:var(--lh-tight)}
.studio .stepper{display:grid;grid-template-columns:var(--touch) minmax(0,1fr) var(--touch);align-items:center;gap:var(--s2);margin:var(--s2) 0}
.studio .stepper button{min-height:var(--touch);padding:0;border:var(--stroke) solid var(--border);border-radius:var(--r-sm);background:transparent;color:var(--text)}
.studio .stepper button:disabled{color:var(--text-disabled);cursor:not-allowed}
.studio #transpose{appearance:none;-webkit-appearance:none;width:100%;min-width:0;height:var(--touch);background:linear-gradient(to right,var(--border) var(--fill-start,50%),var(--accent) var(--fill-start,50%),var(--accent) var(--fill-end,50%),var(--border) var(--fill-end,50%)) center/100% var(--track-height) no-repeat;outline-offset:var(--s1)}
.studio #transpose::-webkit-slider-runnable-track{height:var(--track-height);background:transparent}
.studio #transpose::-webkit-slider-thumb{-webkit-appearance:none;width:var(--thumb);height:var(--thumb);margin-top:calc((var(--track-height) - var(--thumb))/2);border-radius:50%;background:var(--accent);border:0}
.studio #transpose::-moz-range-track{height:var(--track-height);background:transparent}
.studio #transpose::-moz-range-progress{background:transparent}
.studio #transpose::-moz-range-thumb{width:var(--thumb);height:var(--thumb);border-radius:50%;background:var(--accent);border:0}
.studio .adjustments summary{display:flex;align-items:center;gap:var(--s2);min-height:var(--touch)}
.studio .adjustments summary:after,.studio .faq-list summary:after{content:none}
.studio .adjustments summary .detail-toggle{margin-left:auto}
.studio .adjustments .text-action{border:0;border-radius:0;padding:0 var(--s1);margin-left:auto;min-height:var(--touch);font-size:var(--fs-xs);color:var(--text-2);background:transparent;text-decoration:underline;text-underline-offset:var(--s1)}
.studio details[open]>summary .toggle-vertical{display:none}
.studio .help-card{position:relative}
.studio .help-card a:after{content:'';position:absolute;inset:0;border-radius:var(--r-md)}
.studio .help-card:hover{border-color:var(--text-3)}
.studio .help-card:focus-within{outline:var(--focus-ring) solid var(--accent);outline-offset:var(--s1)}
.studio .help-card a:hover{color:var(--text)}
.studio .faq-list summary{display:flex;align-items:flex-start;justify-content:space-between;gap:var(--s4)}
.studio .faq-list summary .detail-toggle{flex-shrink:0;margin-top:var(--s1);color:var(--text-2)}
.studio footer nav{display:flex;align-items:center;flex-wrap:wrap;gap:var(--s5)}
.studio footer nav a,.studio footer nav .analytics-settings{font:inherit;line-height:inherit;padding:0;border:0;border-radius:0;background:transparent;color:inherit;min-height:var(--touch);display:inline-flex;align-items:center;cursor:pointer;vertical-align:baseline}
.studio .analytics-choice{padding:var(--s2) var(--s3);padding-bottom:max(var(--s2),env(safe-area-inset-bottom));font-size:var(--fs-xs);line-height:var(--lh-tight)}
.studio .analytics-choice p{margin-bottom:var(--s1)}
.studio .analytics-choice button{min-height:var(--touch);padding:var(--s2);font-size:var(--fs-xs)}
.studio #source-play{width:var(--touch);height:var(--touch);min-height:var(--touch);flex-basis:var(--touch)}
@media(max-width:640px){
 .studio .panel{padding:var(--s4)}
 .studio.has-source .drop small{display:none}
 .studio.has-source .drop{justify-content:flex-start}
 .studio .result-meta strong{font-size:var(--fs-lg);white-space:nowrap}
 .studio .result-hint{padding:var(--s2);font-size:var(--fs-sm)}
 .studio .adjustments summary>span{display:none}
 .studio footer nav{gap:var(--s4)}
}
@media(prefers-reduced-motion:reduce){.studio #progress.indeterminate>span{animation:none;width:100%;opacity:var(--disabled-opacity)}}
/* Keep error feedback immediately below the input in every state. */
.studio .source>.drop{order:1}
.studio .source>.source-info{order:3}
.studio .source>.secondary-actions{order:6}
.studio .source>.fit-note{order:7}
.studio .source>.micro{order:8}
.studio .adjustments[open] summary:after,.studio .faq-list details[open] summary:after{content:none}
.studio #progress.indeterminate>span{animation-direction:alternate}
@keyframes progress-slide{from{transform:translateX(0)}to{transform:translateX(185%)}}

/* V5: one spacing rule for every FAQ row, including the first and open rows. */
.studio .faq-list details,.studio .faq-list details:first-child{padding:0;margin:0;border-bottom:var(--stroke) solid var(--border)}
.studio .faq-list details>summary,.studio .faq-list details:first-child>summary{box-sizing:border-box;min-height:var(--touch);margin:0;padding:var(--s4) 0}
.studio .faq-list details>p{margin:0;padding:0 0 var(--s4)}
.studio .feedback-link{font-size:var(--fs-sm);color:var(--text-2);line-height:var(--lh-body)}
.studio p.feedback-link{margin:var(--s3) 0 0}
.studio .feedback-link a{color:var(--text);text-decoration:underline;text-underline-offset:var(--s1)}
.studio .feedback-link a:hover{color:var(--text-2)}
.studio .feedback-link a:focus-visible{outline:var(--focus-ring) solid var(--accent);outline-offset:var(--s1);border-radius:var(--s1)}
.studio #result-feedback[hidden]{display:none}
.studio .faq-intro .feedback-link{max-width:none}
@media(min-width:900px){.studio .faq-intro{position:sticky;top:var(--s5);align-self:start}}
/* Keep short feedback labels together; do not strand their final word. */
.studio .feedback-link a{white-space:nowrap}

/* Balance guide headings so their final word does not sit alone. */
.studio .help-card h3{text-wrap:balance}
.studio .mode-switch .text-action{border:0;border-radius:0;padding:0;min-height:var(--touch);font:inherit;color:var(--text);background:transparent;text-decoration:underline;text-underline-offset:var(--s1);cursor:pointer}
.studio .mode-switch .text-action:hover{color:var(--text-2)}
.studio .mode-switch .text-action:disabled{opacity:.5;cursor:default}