/* Live Studio. Uses the app colours from styles.css. Logical properties, so Arabic (dir="rtl") flips cleanly. */
.stu{position:fixed;inset:0;z-index:60;background:var(--bg);color:var(--ink);display:flex;flex-direction:column;--tint:var(--m4);font-family:var(--sans)}
.stu button{font-family:inherit}
.stu-top{flex:none;display:flex;align-items:center;gap:6px;padding:calc(env(safe-area-inset-top,0px) + 6px) 8px 6px;background:var(--surface);border-block-end:1px solid var(--line)}
.stu-ib{flex:none;width:44px;height:44px;border:0;border-radius:12px;background:transparent;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.stu-ib:hover{background:var(--surface2)}
.stu-rst.arm{color:var(--bad)}
.stu-prog{flex:1;min-width:0;display:flex;align-items:center;gap:8px}
.stu-ring{flex:none}
.stu-ring circle:last-child{transition:stroke-dashoffset .5s ease}
.stu-pt{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.stu-pt b{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stu-pt span{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stu-tools{display:flex;align-items:center;gap:2px;flex:none}
.stu .seg.stu-lang{margin:0;padding:2px;flex:none}
.stu .stu-lang button{flex:none;min-width:44px;min-height:44px;font-size:15px}

.stu-main{flex:1;min-height:0;display:flex;flex-direction:column}
.stu-live{order:-1;flex:0 0 44%;min-height:0;display:flex;flex-direction:column;padding:6px 12px 10px;background:var(--surface);border-block-end:1px solid var(--line);transition:flex-basis .4s ease}
.stu.res .stu-live{flex-basis:30%}
.stu-coach{flex:1;min-height:0;display:flex;flex-direction:column;position:relative}

/* live bar */
.stu-livebar{flex:none;display:flex;align-items:center;gap:8px;padding-block-end:6px}
.stu-livetag{flex:1;min-width:0;display:inline-flex;align-items:center;gap:8px;font:700 13px var(--sans);letter-spacing:.04em;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stu-dot{flex:none;width:10px;height:10px;border-radius:50%;background:var(--good);animation:studot 1.8s infinite}
@keyframes studot{0%{box-shadow:0 0 0 0 color-mix(in srgb,var(--good) 70%,transparent)}70%,100%{box-shadow:0 0 0 8px transparent}}
.stu-vseg{display:inline-flex;flex:none;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:2px;gap:2px}
.stu-vseg button,.stu-tab{min-height:44px;min-width:44px;display:inline-flex;align-items:center;justify-content:center;gap:6px;border:0;border-radius:10px;background:transparent;color:var(--muted);font:600 14px var(--sans);padding:0 12px;cursor:pointer}
.stu-vseg button[aria-pressed="true"]{background:var(--accent);color:var(--on-accent)}
.stu-tab{flex:none;border:1px solid var(--line);border-radius:12px;color:var(--ink);background:var(--bg)}
.stu-tab.on{border-color:var(--good);color:var(--good)}
.stu-stage{flex:1;min-height:0;display:flex;align-items:flex-start;justify-content:center;position:relative;overflow:hidden}
.stu-dev{position:relative;flex:none;background:#fff;border-radius:14px;overflow:hidden;box-shadow:0 12px 40px rgba(0,0,0,.45);transition:width .5s cubic-bezier(.3,.7,.2,1),height .5s cubic-bezier(.3,.7,.2,1)}
.stu-dev.phone.big{background:#05071a;border-radius:42px;box-shadow:0 0 0 2px var(--line),0 18px 50px rgba(0,0,0,.5);margin-block-start:4px}
.stu-dev.phone.big iframe{border-radius:32px}
.stu-dev iframe{position:absolute;border:0;background:#fff;transform-origin:0 0;transition:width .5s cubic-bezier(.3,.7,.2,1),height .5s cubic-bezier(.3,.7,.2,1),transform .5s cubic-bezier(.3,.7,.2,1)}
.stu-chrome{display:none}
.stu-dev.laptop.big .stu-chrome{display:flex;align-items:center;gap:6px;height:30px;padding:0 12px;background:#1d2347;direction:ltr}
.stu-chrome i{width:10px;height:10px;border-radius:50%;background:#46508a}
.stu-chrome span{margin-inline-start:10px;flex:1;max-width:260px;height:20px;border-radius:6px;background:#0b0e22;color:#8f99cf;font:12px/20px var(--mono);padding:0 10px}

/* coach */
.stu-cin{flex:1;min-height:0;overflow-y:auto;padding:14px 16px 10px;-webkit-overflow-scrolling:touch}
.stu-cin.in{animation:stuin .38s cubic-bezier(.2,.8,.2,1)}
@keyframes stuin{from{opacity:0;transform:translateX(26px)}to{opacity:1;transform:none}}
.stu[dir="rtl"] .stu-cin.in{animation-name:stuinr}
@keyframes stuinr{from{opacity:0;transform:translateX(-26px)}to{opacity:1;transform:none}}
.stu-kick{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 8px;min-height:28px;margin-block-end:4px}
.stu-kn{white-space:nowrap;display:inline-flex;align-items:center;gap:6px;font:700 13px var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.stu.rtl .stu-kn,.stu.rtl .eyebrow{letter-spacing:0;text-transform:none;font-size:14px}
.stu-bdg{display:inline-flex;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.stu-badge{display:inline-flex;align-items:center;gap:5px;padding:3px 10px;border-radius:999px;background:var(--surface2);font:700 13px var(--sans);white-space:nowrap}
.stu-badge .ic{color:var(--warn)}
.stu-badge.hot{background:var(--hi);color:var(--on-hi);animation:stuhot 1.2s ease-in-out infinite}.stu-badge.hot .ic{color:var(--on-hi)}
@keyframes stuhot{50%{transform:scale(1.06)}}
.stu-ins{font-size:24px;line-height:1.2;margin:2px 0 14px;outline:none;text-wrap:balance}
.stu.rtl .stu-ins{letter-spacing:0;line-height:1.35}
.stu-intro{margin:-4px 0 12px;color:var(--muted);font-size:15px}
.stu-intro.sm{font-size:13px;margin-block:-4px 12px}.stu-intro.sm .ic{vertical-align:-2px;color:var(--hi-text)}
.stu-ctl .eyebrow{margin-block:0 8px}
.stu-hint{font-size:14px;margin:8px 0 0}
.stu-ctl .clabel{margin-block:0 6px}
.stu-ctl .cinput{margin-block-end:2px}

.stu-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stu-opt{display:flex;align-items:center;gap:10px;width:100%;min-height:56px;padding:8px 12px;border:2px solid var(--line);border-radius:14px;background:var(--surface);color:var(--ink);font:600 16px var(--sans);text-align:start;cursor:pointer;transition:border-color .15s,background .15s,transform .1s}
.stu-opt:hover{border-color:color-mix(in srgb,var(--hi) 60%,var(--line))}
.stu-opt:active{transform:scale(.98)}
.stu-opt[aria-pressed="true"]{border-color:var(--hi);background:color-mix(in srgb,var(--hi) 12%,var(--surface))}
.stu-oi{flex:none;width:40px;height:40px;border-radius:12px;background:var(--surface2);display:inline-flex;align-items:center;justify-content:center;color:var(--hi-text)}
.stu-opt.type{min-height:60px;padding:8px 10px;font-size:15px;line-height:1.2}
.stu-list{display:grid;gap:8px}
.stu-rad{flex:none;width:22px;height:22px;border-radius:50%;border:2px solid var(--muted);display:inline-block;position:relative}
.stu-opt[aria-pressed="true"] .stu-rad{border-color:var(--hi)}
.stu-opt[aria-pressed="true"] .stu-rad::after{content:"";position:absolute;inset:3px;border-radius:50%;background:var(--hi)}
.stu-two{display:grid;gap:2px;min-width:0}
.stu-two span{font-weight:400;color:var(--muted);font-size:14px}
.stu-opt.row b{font-weight:600;font-size:16px;line-height:1.3}
.stu-chips{display:flex;flex-wrap:wrap;gap:8px}
.stu-sug{display:inline-flex;align-items:center;gap:6px;min-height:44px;padding:6px 14px;border:1px dashed var(--accent);border-radius:999px;background:transparent;color:var(--ink);font:600 15px var(--sans);text-align:start;cursor:pointer}
.stu-sug .ic{color:var(--hi-text);flex:none}
.stu-sug[aria-pressed="true"]{background:var(--accent);border-style:solid;color:var(--on-accent)}
.stu-sug[aria-pressed="true"] .ic{color:var(--on-accent)}
.stu-sw{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}
.stu-swb{aspect-ratio:1;min-height:44px;border-radius:14px;border:3px solid transparent;background:var(--sw);cursor:pointer;display:grid;place-items:center;color:#fff;box-shadow:0 0 0 1px rgba(255,255,255,.18) inset;transition:transform .12s,border-color .15s}
.stu-swb:active{transform:scale(.92)}
.stu-swb span{opacity:0;transform:scale(.4);transition:opacity .15s,transform .2s;display:inline-flex}
.stu-swb[aria-pressed="true"]{border-color:var(--hi);transform:scale(1.05)}
.stu-swb[aria-pressed="true"] span{opacity:1;transform:none}
.stu-own{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-block-start:14px;padding:8px 12px;border:1px solid var(--line);border-radius:14px;background:var(--surface);font-weight:600;font-size:15px}
.stu-own input{width:64px;height:44px;border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:3px;cursor:pointer}
.stu-step{display:flex;align-items:center;gap:12px}
.stu-step button{flex:none;width:52px;height:52px;border-radius:50%;border:2px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
.stu-step button:active{transform:scale(.92);border-color:var(--hi)}
.stu-step output{flex:1;text-align:center;font:700 26px var(--mono)}
.stu-big{margin-block-start:6px}
.stu-bigseg{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.stu-bigseg button{min-height:64px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;border:2px solid var(--line);border-radius:14px;background:var(--surface);color:var(--ink);font:600 15px var(--sans);cursor:pointer}
.stu-bigseg button[aria-pressed="true"]{border-color:var(--hi);background:color-mix(in srgb,var(--hi) 12%,var(--surface))}
.stu-tryit{display:flex;gap:8px;align-items:flex-start;margin:12px 0 0;padding:10px 12px;border-radius:12px;background:color-mix(in srgb,var(--accent) 16%,transparent);font-weight:600;font-size:15px}
.stu-tryit .ic{flex:none;color:var(--hi-text);margin-top:2px}
.stu-warn{margin:10px 0 0;padding:10px 12px;border-radius:12px;border:1px solid color-mix(in srgb,var(--warn) 55%,var(--line));background:color-mix(in srgb,var(--warn) 12%,transparent);font-size:14px}
.stu-chip{display:none;margin-block-start:16px;padding:12px 14px;border-radius:14px;background:var(--surface);border:1px solid var(--line);border-inline-start:5px solid var(--hi);font-size:15px;line-height:1.45}
.stu-chip:not(:empty){display:block}
.stu-chip.show{animation:stupop .45s cubic-bezier(.2,.9,.3,1.3)}
@keyframes stupop{from{opacity:0;transform:translateY(10px) scale(.96)}to{opacity:1;transform:none}}
.stu-cw{display:inline-flex;align-items:center;gap:5px;margin-inline-end:8px;padding:1px 10px;border-radius:999px;background:var(--hi);color:var(--on-hi);font:700 13px var(--sans);vertical-align:1px}
.stu-skip{display:block;min-height:44px;margin-block-start:10px;padding:0;text-align:start}
.stu-acts{flex:none;padding:10px 16px calc(env(safe-area-inset-bottom,0px) + 12px);background:var(--surface);border-block-start:1px solid var(--line)}
.stu-btns{display:flex;gap:10px}
.stu-btns .btn{flex:1;min-width:0}
.stu-btns .btn.ghost{flex:0 0 34%}

/* check and launch lists */
.stu-checks,.stu-launch{list-style:none;margin:0 0 10px;padding:0;display:grid;gap:8px}
.stu-checks li,.stu-launch li{display:flex;align-items:center;gap:12px;min-height:56px;padding:10px 12px;border:1px solid var(--line);border-radius:14px;background:var(--surface);transition:border-color .2s,background .2s}
.stu-checks li.ok,.stu-launch li.ok{border-color:var(--good);background:color-mix(in srgb,var(--good) 10%,var(--surface))}
.stu-checks li.bad,.stu-launch li.bad{border-color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,var(--surface))}
.stu-ckm{flex:none;width:28px;height:28px;border-radius:50%;border:2px solid var(--line);display:inline-flex;align-items:center;justify-content:center;color:#fff}
li.ok .stu-ckm{background:var(--good);border-color:var(--good);animation:stupop .4s cubic-bezier(.2,.9,.3,1.4)}
li.bad .stu-ckm{background:var(--bad);border-color:var(--bad)}
li.run .stu-ckm{border-color:var(--accent);border-block-start-color:transparent;animation:stuspin .7s linear infinite}
@keyframes stuspin{to{transform:rotate(360deg)}}
.stu-ckd{display:block;font-size:13px;color:var(--muted);font-weight:400;line-height:1.35}
.stu-checks b,.stu-launch b{font-size:16px}

/* result */
.stu-rbtns{display:grid;gap:10px;margin-block-end:14px}
.stu-share{--tint:var(--m3)}
.stu-qa{margin-block-end:14px}
.stu-qa p{margin:0 0 8px;font-size:16px}
.stu .card{margin-block-end:14px}

/* confetti */
.stu-fx{position:absolute;inset:0;pointer-events:none;overflow:hidden;z-index:5}
.stu-cf{position:absolute;top:-16px;inset-inline-start:var(--x);width:var(--w);height:calc(var(--w) * 1.7);background:var(--c);border-radius:2px;animation:stucf var(--t) var(--d) cubic-bezier(.3,.6,.4,1) forwards}
@keyframes stucf{to{transform:translateY(110vh) rotate(var(--r));opacity:.85}}

/* small screens: icon-only buttons in the live bar */
@media (max-width:620px){
  .stu-vseg span,.stu-tab span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
  .stu-vseg button,.stu-tab{padding:0}
}

/* wide screens: two panes side by side */
@media (min-width:900px){
  .stu-top{padding-inline:20px}
  .stu-main{flex-direction:row}
  .stu-coach{flex:0 0 min(480px,38%);order:0;border-inline-end:1px solid var(--line)}
  .stu-live{order:1;flex:1;padding:14px 22px 18px;border-block-end:0;background:radial-gradient(ellipse at 50% 30%,color-mix(in srgb,var(--accent) 14%,var(--surface)),var(--surface) 70%)}
  .stu.res .stu-live{flex-basis:auto}
  .stu-cin{padding:22px 26px 12px}
  .stu-acts{padding-inline:26px}
  .stu-ins{font-size:28px}
  .stu-grid{grid-template-columns:1fr 1fr}
  .stu-livebar{padding-block-end:12px}
}

/* the home card */
.stuhero{background:linear-gradient(135deg,color-mix(in srgb,var(--m4) 24%,var(--surface)),var(--surface) 70%)}
.stuoffer{border-color:color-mix(in srgb,var(--m4) 50%,var(--line))}
@media (prefers-reduced-motion:reduce){.stu *{animation:none!important;transition:none!important}}

.stu .btn.small,.stu .ext{min-height:44px}
.stu .ext{display:inline-flex;align-items:center}
.stu .btn.ghost{box-shadow:0 0 0 2px var(--line) inset}