/* ReplayTower V1 — layout & composants. Charge tokens.css avant. */
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:var(--font);background:var(--bg-canvas);color:var(--text-primary);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{max-width:100%;display:block}
::selection{background:var(--accent-tint)}
:focus-visible{outline:none;box-shadow:0 0 0 2px var(--accent-bright),0 0 0 6px rgba(110,160,245,.22);border-radius:6px}
.ic svg{width:100%;height:100%;stroke:currentColor;stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- App shell ---------- */
.app{display:flex;min-height:100vh}
.sidebar{width:236px;flex:0 0 236px;background:var(--bg-base);border-right:1px solid var(--hairline);display:flex;flex-direction:column;padding:var(--sp-6) var(--sp-3);position:sticky;top:0;height:100vh;transition:width .2s var(--ease),flex-basis .2s var(--ease)}
.app.collapsed .sidebar{width:66px;flex-basis:66px}
.logo{display:flex;align-items:center;gap:10px;padding:0 var(--sp-3) var(--sp-8);font-weight:600}
.logo .mark{width:28px;height:28px;border-radius:8px;background:linear-gradient(140deg,var(--accent-bright),var(--accent-press));flex:0 0 28px;box-shadow:0 0 18px rgba(110,160,245,.35)}
.logo .txt{white-space:nowrap;overflow:hidden;letter-spacing:.2px}
.app.collapsed .logo .txt,.app.collapsed .navitem .lbl,.app.collapsed .side-foot .txt{display:none}
.nav{display:flex;flex-direction:column;gap:2px}
.navitem{display:flex;align-items:center;gap:12px;padding:10px var(--sp-3);border-radius:var(--r-md);color:var(--text-secondary);font-size:14px;transition:.16s var(--ease);position:relative;width:100%;text-align:left}
.navitem:hover{background:var(--surface-1);color:var(--text-primary)}
.navitem[aria-current="page"]{background:var(--accent-tint);color:var(--text-primary)}
.navitem[aria-current="page"]::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:2px;border-radius:2px;background:var(--accent-bright)}
.navitem .ic{width:20px;height:20px;flex:0 0 20px}
.side-foot{margin-top:auto;display:flex;align-items:center;gap:10px;padding:10px var(--sp-3);color:var(--text-tertiary);font-size:13px}
.side-foot .av{width:28px;height:28px;border-radius:99px;background:var(--surface-3);flex:0 0 28px;display:grid;place-items:center;color:var(--text-secondary);font-size:12px}
.collapse-btn{margin-top:var(--sp-3);align-self:flex-start;color:var(--text-tertiary);font-size:12px;padding:6px var(--sp-3);border-radius:var(--r-sm)}
.collapse-btn:hover{color:var(--text-secondary);background:var(--surface-1)}
.content{flex:1;min-width:0;display:flex;flex-direction:column}

/* top bar (mobile + controls) */
.topbar{display:flex;align-items:center;gap:var(--sp-3);height:56px;padding:0 var(--sp-6);border-bottom:1px solid var(--hairline);position:sticky;top:0;background:color-mix(in srgb,var(--bg-canvas) 82%,transparent);backdrop-filter:blur(14px);z-index:20}
.topbar .burger{display:none;width:38px;height:38px;flex:0 0 38px;border-radius:10px;color:var(--text-secondary)}
.topbar .burger .ic{width:20px;height:20px}
.topbar .burger:hover{background:var(--surface-2)}
.topbar .demo{font-size:11px;color:var(--text-tertiary);border:1px solid var(--hairline);padding:3px 9px;border-radius:99px}
.topbar .spacer{flex:1}
.seg{display:flex;background:var(--surface-2);border-radius:99px;padding:3px;border:1px solid var(--hairline)}
.seg button{font-size:12px;padding:5px 11px;border-radius:99px;color:var(--text-tertiary);transition:.16s var(--ease)}
.seg button[aria-pressed="true"]{background:var(--accent-tint);color:var(--text-primary)}
.seg .lab{font-size:11px;color:var(--text-tertiary);padding:0 8px 0 4px;align-self:center}

/* ---------- Buttons / primitives ---------- */
.btn{border-radius:var(--r-md);padding:12px 22px;font-size:14px;font-weight:500;transition:.16s var(--ease);display:inline-flex;align-items:center;gap:8px;justify-content:center}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(61,111,209,.3)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}
.btn-primary:active{background:var(--accent-press);transform:translateY(0)}
.btn-2{background:var(--surface-2);border:1px solid var(--hairline-strong);color:var(--text-primary)}
.btn-2:hover{background:var(--surface-3)}
.btn-ghost{color:var(--text-secondary)}
.btn-ghost:hover{color:var(--text-primary);background:var(--surface-2)}
.linkbtn{color:var(--accent-bright);font-size:14px;font-weight:500}
.linkbtn:hover{text-decoration:underline}

/* ---------- Screens ---------- */
.screen{display:none;flex:1}
.screen.active{display:block}
.pad{padding:var(--sp-12) var(--sp-6);max-width:1040px;margin:0 auto;width:100%}
.kick{color:var(--text-tertiary);font-size:12px;letter-spacing:.05em;text-transform:uppercase;margin-bottom:8px}

/* HOME */
.home{min-height:calc(100vh - 56px);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--sp-16) var(--sp-6);position:relative;overflow:hidden}
.ambient{position:absolute;inset:0;pointer-events:none;background:
  radial-gradient(60% 50% at 50% 20%, rgba(61,111,209,.16), transparent 70%),
  radial-gradient(42% 42% at 80% 84%, rgba(232,199,154,.06), transparent 70%)}
.home-inner{position:relative;width:100%;max-width:720px;text-align:center}
.phrase{font-size:clamp(28px,4.6vw,46px);font-weight:500;line-height:1.1;letter-spacing:-.5px;margin-bottom:var(--sp-8)}
.command{display:flex;align-items:center;gap:var(--sp-3);background:var(--surface-1);border:1px solid var(--hairline-strong);border-radius:var(--r-xl);padding:var(--sp-4) var(--sp-4) var(--sp-4) var(--sp-6);box-shadow:var(--shadow);transition:.22s var(--ease)}
.command.drag,.command:focus-within{border-color:var(--accent-bright);box-shadow:0 0 0 4px rgba(110,160,245,.16),var(--shadow-lg);background:linear-gradient(0deg,var(--accent-tint),var(--surface-1))}
.command input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:17px;min-width:0}
.command input::placeholder{color:var(--text-tertiary)}
.icon-btn{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;color:var(--text-tertiary);flex:0 0 32px}
.icon-btn:hover{color:var(--text-secondary);background:var(--surface-3)}
.send{width:44px;height:44px;flex:0 0 44px;border-radius:var(--r-md);background:var(--accent);color:#fff;display:grid;place-items:center;box-shadow:0 6px 18px rgba(61,111,209,.35);transition:.16s var(--ease)}
.send:hover{background:var(--accent-hover);transform:translateY(-1px)}
.send svg{width:20px;height:20px;stroke:#fff;stroke-width:2}
.hint{margin-top:var(--sp-6);color:var(--text-tertiary);font-size:13px}
.rowlabel{margin:var(--sp-8) 0 var(--sp-3);color:var(--text-tertiary);font-size:12px;letter-spacing:.04em;text-transform:uppercase}
.chips{display:flex;flex-wrap:wrap;gap:var(--sp-2);justify-content:center}
.chip{background:var(--surface-2);border:1px solid var(--hairline);color:var(--text-secondary);padding:9px 16px;border-radius:99px;font-size:14px;transition:.16s var(--ease);display:inline-flex;align-items:center;gap:8px}
.chip:hover{background:var(--surface-3);color:var(--text-primary);transform:translateY(-1px)}
.chip .dot{width:7px;height:7px;border-radius:99px;background:var(--accent-bright)}
.resume{margin-top:var(--sp-8);color:var(--text-secondary);font-size:14px}
.resume .linkbtn{margin-left:6px}

/* PROCESSING */
.proc{min-height:calc(100vh - 56px);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--sp-12) var(--sp-6);text-align:center}
.proc h2{font-size:24px;font-weight:500;margin-bottom:var(--sp-2)}
.proc .say{color:var(--text-secondary);font-size:16px;min-height:24px;margin-bottom:var(--sp-8);transition:.3s var(--ease)}
.scanwrap{width:100%;max-width:760px;background:var(--surface-1);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:var(--sp-6);box-shadow:var(--shadow)}
.filmstrip{position:relative;height:82px;border-radius:var(--r-md);overflow:hidden;background:repeating-linear-gradient(90deg,rgba(110,160,245,.10) 0 2px,transparent 2px 46px),linear-gradient(180deg,#1d2b45,#141f33);border:1px solid var(--hairline)}
.peak{position:absolute;top:0;bottom:0;width:64px;border-radius:6px;opacity:0;transition:opacity .4s var(--ease)}
.peak.show{opacity:1}
.peak.hot{background:linear-gradient(180deg,rgba(110,160,245,.5),rgba(61,111,209,.18));box-shadow:0 0 26px rgba(110,160,245,.6),inset 0 0 0 1px var(--accent-bright)}
.peak.gold{background:linear-gradient(180deg,rgba(232,199,154,.42),rgba(232,199,154,.12));box-shadow:0 0 26px rgba(232,199,154,.5),inset 0 0 0 1px var(--champagne)}
.playhead{position:absolute;top:-6px;bottom:-6px;width:2px;background:var(--text-primary);box-shadow:0 0 12px rgba(245,242,236,.8);left:0}
.playhead::after{content:"";position:absolute;top:-4px;left:-4px;width:10px;height:10px;border-radius:99px;background:var(--text-primary)}
.pulse{position:absolute;width:20px;height:20px;border-radius:99px;top:31px;transform:translate(-50%,-50%);opacity:0}
.pulse.go{animation:pulse 1s var(--ease)}
@keyframes pulse{0%{opacity:.9;box-shadow:0 0 0 0 rgba(110,160,245,.55)}100%{opacity:0;box-shadow:0 0 0 26px rgba(110,160,245,0)}}
.proc-steps{display:flex;gap:var(--sp-6);justify-content:center;margin-top:var(--sp-6);color:var(--text-tertiary);font-size:13px;flex-wrap:wrap}
.proc-steps .st{display:flex;align-items:center;gap:8px;transition:.3s}
.proc-steps .st .b{width:8px;height:8px;border-radius:99px;background:var(--hairline-strong);transition:.3s}
.proc-steps .st.on{color:var(--text-secondary)}
.proc-steps .st.on .b{background:var(--accent-bright);box-shadow:0 0 10px rgba(110,160,245,.7)}
.proc-steps .st.done .b{background:var(--success)}
.proc-actions{margin-top:var(--sp-8);display:flex;gap:var(--sp-3);align-items:center;justify-content:center;flex-wrap:wrap}

/* RESULTS */
.collapse-card{background:var(--surface-1);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:var(--sp-6);box-shadow:var(--shadow);margin-bottom:var(--sp-8);display:flex;align-items:center;gap:var(--sp-8);flex-wrap:wrap}
.collapse-viz{flex:1;min-width:240px}
.collapse-bar{height:14px;border-radius:99px;background:var(--surface-3);overflow:hidden;position:relative}
.collapse-fill{position:absolute;left:0;top:0;bottom:0;width:100%;border-radius:99px;background:linear-gradient(90deg,var(--accent),var(--accent-bright));transition:width 1.4s var(--ease)}
.collapse-nums{display:flex;justify-content:space-between;margin-top:10px;color:var(--text-tertiary);font-size:13px;font-variant-numeric:tabular-nums}
.collapse-big{text-align:center;min-width:150px}
.collapse-big .n{font-size:40px;font-weight:600;font-variant-numeric:tabular-nums;letter-spacing:-1px}
.collapse-big .c{color:var(--text-tertiary);font-size:13px;margin-top:4px}
.clips{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:var(--sp-4)}
.clip{background:var(--surface-1);border:1px solid var(--hairline);border-radius:var(--r-lg);overflow:hidden;transition:.18s var(--ease);cursor:pointer;text-align:left}
.clip:hover{background:var(--surface-2);transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.clip.best{border-color:var(--accent-bright);box-shadow:0 0 0 1px var(--accent-bright),var(--shadow)}
.thumb{aspect-ratio:9/16;background:linear-gradient(160deg,#22314f,#141d2f);position:relative;display:grid;place-items:center}
.clip.best .thumb{background:linear-gradient(160deg,#2a3c60,#182642)}
.thumb .play{width:46px;height:46px;border-radius:99px;background:rgba(245,242,236,.12);display:grid;place-items:center;border:1px solid rgba(245,242,236,.25)}
.thumb .play svg{width:18px;height:18px;fill:var(--text-primary);stroke:none;margin-left:2px}
.thumb .dur{position:absolute;right:10px;bottom:10px;background:rgba(9,14,22,.7);color:#F5F2EC;padding:3px 8px;border-radius:6px;font-size:12px;font-variant-numeric:tabular-nums}
.thumb .tag-best{position:absolute;left:10px;top:10px;background:var(--accent);color:#fff;font-size:11px;font-weight:600;padding:3px 9px;border-radius:99px}
.clip .body{padding:var(--sp-4)}
.clip .reason{font-size:14.5px;line-height:1.4}
.clip .meta{margin-top:8px;color:var(--text-tertiary);font-size:12px}

/* STUDIO */
.studio{display:flex;min-height:calc(100vh - 56px)}
.studio-main{flex:1;min-width:0;display:flex;flex-direction:column;padding:var(--sp-6);overflow:auto}
.studio-head{display:flex;align-items:center;gap:var(--sp-3);margin-bottom:var(--sp-4)}
.studio-head h2{font-size:18px;font-weight:600}
.player{position:relative;height:min(54vh,470px);aspect-ratio:9/16;margin:0 auto;border-radius:var(--r-xl);overflow:hidden;background:linear-gradient(160deg,#2b3d63,#131d31);border:1px solid var(--hairline);display:grid;place-items:center;box-shadow:var(--shadow-lg)}
.frame9{position:absolute;inset:0;display:grid;place-items:center}
.bigplay{width:64px;height:64px;border-radius:99px;background:rgba(245,242,236,.14);border:1px solid rgba(245,242,236,.3);display:grid;place-items:center;transition:.18s var(--ease)}
.bigplay:hover{transform:scale(1.06);background:rgba(245,242,236,.2)}
.bigplay svg{width:24px;height:24px;fill:#F5F2EC;margin-left:3px}
.cap{position:absolute;left:0;right:0;bottom:16px;text-align:center;font-weight:700;font-size:15px;text-shadow:0 2px 8px rgba(0,0,0,.6);color:#fff;padding:0 12px}
.recut-flash{position:absolute;inset:0;background:var(--accent-bright);opacity:0;pointer-events:none}
.recut-flash.go{animation:flash .6s var(--ease)}
@keyframes flash{0%{opacity:0}30%{opacity:.22}100%{opacity:0}}
.chatline{margin-top:var(--sp-4);display:flex;gap:var(--sp-2);align-items:center;background:var(--surface-1);border:1px solid var(--hairline-strong);border-radius:var(--r-md);padding:8px 8px 8px var(--sp-4);max-width:640px;width:100%;align-self:center;transition:.2s var(--ease)}
.chatline:focus-within{border-color:var(--accent-bright);box-shadow:0 0 0 3px rgba(110,160,245,.14)}
.chatline input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:15px;min-width:0}
.chatline input::placeholder{color:var(--text-tertiary)}
.chatline .go{width:36px;height:36px;flex:0 0 36px;border-radius:9px;background:var(--accent);display:grid;place-items:center}
.chatline .go svg{width:17px;height:17px;stroke:#fff;stroke-width:2}
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(8px);background:var(--surface-2);border:1px solid var(--hairline);color:var(--text-secondary);font-size:13px;padding:10px 16px;border-radius:99px;opacity:0;transition:.3s var(--ease);display:inline-flex;gap:10px;align-items:center;z-index:60;box-shadow:var(--shadow-lg)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast .undo{color:var(--accent-bright);font-weight:600}
.tl-toggle{align-self:center;margin-top:var(--sp-4);color:var(--text-secondary);font-size:13px;display:inline-flex;gap:8px;align-items:center;padding:8px 14px;border-radius:99px;border:1px solid var(--hairline)}
.tl-toggle:hover{color:var(--text-primary);background:var(--surface-2)}
.timeline{align-self:center;width:100%;max-width:640px;margin-top:var(--sp-3);overflow:hidden;max-height:0;opacity:0;transition:max-height .32s var(--ease),opacity .32s var(--ease)}
.timeline.open{max-height:160px;opacity:1}
.tl-track{display:flex;height:56px;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--hairline)}
.tl-seg{display:grid;place-items:center;font-size:12px;font-weight:600}
.tl-ctx{flex:2;background:linear-gradient(180deg,#5b6b82,#47566b);color:var(--text-primary)}
.tl-act{flex:3;background:linear-gradient(180deg,var(--accent-bright),var(--accent));color:#fff}
.tl-rea{flex:2;background:linear-gradient(180deg,#6fd0a0,var(--success));color:#0e1626}
.tl-legend{display:flex;justify-content:space-between;margin-top:8px;color:var(--text-tertiary);font-size:12px}
.props{width:320px;flex:0 0 320px;border-left:1px solid var(--hairline);background:var(--bg-base);padding:var(--sp-6) var(--sp-4);overflow:auto}
.props h3{font-size:13px;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.04em;margin-bottom:var(--sp-4)}
.prop{display:flex;gap:var(--sp-3);padding:var(--sp-3);border-radius:var(--r-md);border:1px solid transparent;cursor:pointer;transition:.16s var(--ease);margin-bottom:var(--sp-2);width:100%;text-align:left}
.prop:hover{background:var(--surface-1)}
.prop[aria-selected="true"]{background:var(--accent-tint);border-color:var(--accent-bright)}
.prop .mini{width:44px;height:64px;flex:0 0 44px;border-radius:8px;background:linear-gradient(160deg,#293a5c,#141d2f)}
.prop .info b{font-weight:600;font-size:14px}
.prop .info .r{color:var(--text-secondary);font-size:13px;margin-top:3px;line-height:1.35}
.prop .info .d{color:var(--text-tertiary);font-size:12px;margin-top:6px;font-variant-numeric:tabular-nums}
.props .publish{margin-top:var(--sp-4);display:flex}
.props .publish .btn{width:100%}

/* Assistant */
.afab{position:fixed;right:22px;bottom:22px;z-index:40;display:flex;align-items:center;gap:10px;background:var(--surface-2);border:1px solid var(--hairline-strong);border-radius:99px;padding:10px 16px;box-shadow:var(--shadow-lg);transition:.18s var(--ease)}
.afab:hover{transform:translateY(-2px);border-color:var(--accent-bright)}
.orb{width:22px;height:22px;border-radius:99px;background:radial-gradient(circle at 35% 30%,var(--accent-bright),var(--accent-press));box-shadow:0 0 14px rgba(110,160,245,.6);flex:0 0 22px}
.afab .lbl{font-size:13px;color:var(--text-secondary)}
.assistant{position:fixed;top:0;right:0;bottom:0;width:360px;max-width:88vw;background:var(--surface-1);border-left:1px solid var(--hairline);z-index:55;transform:translateX(100%);transition:transform .3s var(--ease);display:flex;flex-direction:column;box-shadow:var(--shadow-lg)}
.assistant.open{transform:translateX(0)}
.a-head{display:flex;align-items:center;gap:10px;padding:var(--sp-4);border-bottom:1px solid var(--hairline)}
.a-head .orb{width:26px;height:26px}
.a-head .who{font-weight:600;font-size:14px}
.a-head .ctx{color:var(--text-tertiary);font-size:12px}
.a-head .x{margin-left:auto;color:var(--text-tertiary);width:30px;height:30px;border-radius:8px}
.a-head .x:hover{background:var(--surface-3);color:var(--text-primary)}
.a-body{flex:1;overflow:auto;padding:var(--sp-4);display:flex;flex-direction:column;gap:var(--sp-3)}
.bubble{max-width:85%;padding:11px 14px;border-radius:14px;font-size:14px;line-height:1.45}
.bubble.ai{background:var(--surface-2);border:1px solid var(--hairline);align-self:flex-start;border-bottom-left-radius:4px}
.bubble.me{background:var(--accent);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.a-sugg{display:flex;flex-wrap:wrap;gap:8px}
.a-sugg button{font-size:12.5px;background:var(--surface-2);border:1px solid var(--hairline);color:var(--text-secondary);padding:7px 12px;border-radius:99px}
.a-sugg button:hover{background:var(--surface-3);color:var(--text-primary)}
.a-foot{padding:var(--sp-3) var(--sp-4);border-top:1px solid var(--hairline);display:flex;gap:8px;align-items:center}
.a-foot input{flex:1;background:var(--surface-2);border:1px solid var(--hairline-strong);border-radius:99px;padding:10px 14px;color:var(--text-primary);outline:none;font-size:14px;min-width:0}
.a-foot input:focus{border-color:var(--accent-bright)}
.a-foot .go{width:38px;height:38px;flex:0 0 38px;border-radius:99px;background:var(--accent);display:grid;place-items:center}
.a-foot .go svg{width:17px;height:17px;stroke:#fff;stroke-width:2}
.scrim{position:fixed;inset:0;background:rgba(6,10,18,.5);opacity:0;pointer-events:none;transition:.3s;z-index:50}
.scrim.show{opacity:1;pointer-events:auto}

/* ONBOARDING */
.onb{min-height:calc(100vh - 56px);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--sp-12) var(--sp-6);text-align:center;position:relative}
.onb .step{color:var(--text-tertiary);font-size:12px;letter-spacing:.05em;text-transform:uppercase;margin-bottom:var(--sp-4)}
.onb h2{font-size:clamp(24px,3.4vw,34px);font-weight:500;margin-bottom:var(--sp-8);letter-spacing:-.4px}
.onb .opts{display:flex;gap:var(--sp-4);flex-wrap:wrap;justify-content:center;max-width:640px}
.bigopt{background:var(--surface-1);border:1px solid var(--hairline-strong);border-radius:var(--r-lg);padding:var(--sp-8);min-width:170px;font-size:17px;font-weight:500;transition:.18s var(--ease);display:flex;flex-direction:column;gap:10px;align-items:center}
.bigopt .em{width:44px;height:44px;border-radius:12px;background:var(--accent-tint);display:grid;place-items:center;color:var(--accent-bright)}
.bigopt:hover{border-color:var(--accent-bright);transform:translateY(-3px);box-shadow:var(--shadow-lg);background:var(--surface-2)}
.bigopt small{color:var(--text-tertiary);font-weight:400;font-size:13px}
.onb .skip{margin-top:var(--sp-8);color:var(--text-tertiary);font-size:14px}
.onb .skip:hover{color:var(--text-secondary);text-decoration:underline}
.dots{display:flex;gap:8px;justify-content:center;margin-top:var(--sp-8)}
.dots i{width:7px;height:7px;border-radius:99px;background:var(--hairline-strong);transition:.2s}
.dots i.on{background:var(--accent-bright);width:20px}

/* generic sections (Library / Help placeholders, mocked) */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:var(--sp-4)}
.card{background:var(--surface-1);border:1px solid var(--hairline);border-radius:var(--r-lg);padding:var(--sp-4);box-shadow:var(--shadow)}
.card h4{font-size:15px;margin-bottom:6px}
.card p{color:var(--text-secondary);font-size:13px;line-height:1.45}
.empty{text-align:center;color:var(--text-tertiary);padding:var(--sp-16) var(--sp-6)}
.empty .big{font-size:18px;color:var(--text-secondary);margin-bottom:var(--sp-4)}

/* ---------- Responsive ---------- */
@media (max-width:860px){
  .sidebar{position:fixed;z-index:60;transform:translateX(-100%);transition:transform .25s var(--ease);height:100vh}
  .app.nav-open .sidebar{transform:translateX(0)}
  .topbar .burger{display:grid;place-items:center}
  .props{display:none}
  .studio{flex-direction:column}
  .seg .lab{display:none}
}
@media (max-width:520px){
  .pad{padding:var(--sp-8) var(--sp-4)}
  .command{padding:var(--sp-3) var(--sp-3) var(--sp-3) var(--sp-4)}
  .command input{font-size:16px}
  .bigopt{min-width:140px;padding:var(--sp-6)}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}