/* Nilsa decoration studio. Built on the tokens of styles.css (colors, radius, Tahoma). */
.studio-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:end;padding:56px 0 34px}
.studio-hero h1{font-size:clamp(30px,2.6vw,46px);letter-spacing:-1px;line-height:1.45;margin:0 0 12px}
.studio-hero p{margin:0;max-width:560px}
.studio-steps-line{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0;padding:0;list-style:none}
.studio-steps-line li{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:16px 18px;font-size:13px;color:var(--muted)}
.studio-steps-line b{display:block;color:var(--ink);font-size:14px;margin-bottom:3px}
.studio-steps-line i{font-style:normal;display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--sand);color:var(--rose-dark);font-size:12px;font-weight:bold;margin-bottom:8px}

.studio-layout{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(340px,1fr);gap:28px;align-items:start;padding-bottom:40px}
/* ---------- stage ---------- */
.stage{position:sticky;top:18px}
.stage-frame{position:relative;border-radius:var(--radius);overflow:hidden;background:#ede8e4;min-height:520px;display:grid;border:1px solid var(--line)}
.stage-frame.is-empty{border:1.5px dashed var(--rose)}
.stage-frame.is-drag{background:#f3e9e3;border-color:var(--rose-dark)}
.stage-empty{display:grid;place-items:center;text-align:center;padding:40px 24px;gap:0}
.stage-empty .ring{width:76px;height:76px;border-radius:50%;background:var(--paper);border:1px solid var(--line);display:grid;place-items:center;margin:0 auto 18px}
.stage-empty .ring svg{width:30px;height:30px;stroke:var(--rose-dark)}
.stage-empty h2{font-size:22px;margin:0 0 6px}
.stage-empty p{font-size:13px;margin:0 0 20px}
.stage-empty .actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.stage-empty .actions .btn{min-height:46px;padding:9px 24px;font-size:14px}
.stage-tips{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:24px}
.stage-tips span{font-size:11px;color:var(--muted);background:#fcfaf8b3;border:1px solid var(--line);border-radius:30px;padding:5px 12px}
.stage-view{position:relative;display:none;align-self:stretch}
.stage-frame.has-room .stage-empty{display:none}
.stage-frame.has-room .stage-view{display:grid;place-items:center;background:#e9e4df}
.stage-view>img,.compare img{display:block;width:100%;max-height:72vh;object-fit:contain}
.stage-view.pick{cursor:crosshair}
.pin{position:absolute;width:30px;height:30px;margin:-15px 0 0 -15px;border-radius:50%;border:2px solid #fff;background:var(--rose-dark);box-shadow:0 0 0 6px #ae7c6940,0 6px 18px #0004;pointer-events:none;transition:left .2s,top .2s}
.pin::after{content:"";position:absolute;inset:8px;border-radius:50%;background:#fff}
.stage-hint{position:absolute;top:16px;right:16px;left:16px;display:flex;justify-content:center;pointer-events:none}
.stage-hint span{background:#292724d9;color:#fff;font-size:12px;border-radius:30px;padding:8px 16px;backdrop-filter:blur(6px)}
.stage-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:12px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.stage-toolbar button{border:1px solid var(--line);background:var(--paper);border-radius:30px;padding:7px 16px;font-size:12px;color:var(--ink)}
.stage-toolbar button:hover{border-color:var(--rose)}
/* processing */
.processing{position:absolute;inset:0;display:none;place-items:center;background:#29272459;backdrop-filter:blur(2px)}
.stage-frame.is-busy .processing{display:grid}
.processing .scan{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.processing .scan::before{content:"";position:absolute;left:0;right:0;height:38%;top:-40%;background:linear-gradient(180deg,transparent,#fcfaf833 70%,#fcfaf866 98%,transparent);animation:scan 2.4s ease-in-out infinite}
@keyframes scan{to{top:100%}}
.progress-card{position:relative;background:var(--paper);border-radius:22px;padding:22px 24px;width:min(360px,86%);box-shadow:0 20px 50px #0003}
.progress-card h3{font-size:16px;margin:0 0 14px}
.progress-card ol{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.progress-card li{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.progress-card li::before{content:"";width:16px;height:16px;border-radius:50%;border:1.5px solid var(--line);flex:none}
.progress-card li.active{color:var(--ink);font-weight:bold}
.progress-card li.active::before{border-color:var(--rose);border-top-color:transparent;animation:spin .8s linear infinite}
.progress-card li.done{color:var(--ink)}
.progress-card li.done::before{background:var(--rose) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%23fff' stroke-width='2'/%3E%3C/svg%3E") center/12px no-repeat;border-color:var(--rose)}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.processing .scan::before,.progress-card li.active::before{animation:none}}
/* before / after */
.compare{position:relative;display:none;user-select:none;touch-action:none;align-self:stretch;background:#e9e4df}
.stage-frame.has-result .compare{display:grid;place-items:center}
.stage-frame.has-result .stage-view{display:none}
.compare .after{position:absolute;inset:0;display:grid;place-items:center;clip-path:inset(0 0 0 var(--split,50%))}
.compare .after img{position:static}
.compare .handle{position:absolute;top:0;bottom:0;left:var(--split,50%);width:2px;margin-left:-1px;background:#fff;box-shadow:0 0 12px #0005;pointer-events:none}
.compare .handle::after{content:"‹ ›";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:44px;height:44px;border-radius:50%;background:#fff;color:var(--rose-dark);display:grid;place-items:center;font-size:16px;font-weight:bold;letter-spacing:4px;box-shadow:0 6px 18px #0003;direction:ltr}
.compare input[type=range]{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.compare .tag{position:absolute;top:16px;background:#292724c7;color:#fff;font-size:11px;border-radius:30px;padding:5px 13px;pointer-events:none}
.compare .tag.before{left:16px}.compare .tag.after-tag{right:16px}
.demo-badge{position:absolute;bottom:14px;right:14px;left:14px;display:flex;justify-content:center;pointer-events:none}
.demo-badge span{background:#fcfaf8eb;border:1px solid var(--line);color:var(--muted);font-size:11px;border-radius:30px;padding:6px 14px}
/* result bar */
.result-bar{display:none;margin-top:14px;background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:14px 16px;gap:14px;align-items:center;grid-template-columns:64px 1fr auto}
.result-bar.show{display:grid}
.result-bar img{width:64px;height:64px;border-radius:14px;object-fit:cover}
.result-bar h3{font-size:14px;margin:0 0 2px}
.result-bar p{font-size:12px;margin:0}
.result-bar .actions{display:flex;gap:8px;flex-wrap:wrap}
.result-bar .btn{min-height:42px;padding:8px 18px;font-size:13px}

/* ---------- control panel ---------- */
.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.step{padding:22px 24px;border-bottom:1px solid var(--line)}
.step:last-child{border-bottom:0}
.step-head{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.step-head i{font-style:normal;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--sand);color:var(--rose-dark);font-size:12px;font-weight:bold;flex:none}
.step.done .step-head i{background:var(--rose);color:#fff}
.step-head h2{font-size:16px;margin:0;line-height:1.6}
.step-head small{display:block;font-size:11px;color:var(--muted);font-weight:normal}
.step.locked{opacity:.45;pointer-events:none}
.room-file{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--muted)}
.room-file img{width:54px;height:40px;border-radius:9px;object-fit:cover}
.room-file b{color:var(--ink);display:block;font-size:13px;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.link-btn{border:0;background:none;color:var(--rose-dark);font-size:12px;border-bottom:1px solid currentColor;padding:0;margin-right:auto}
.types{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.type{border:1px solid var(--line);background:#fff;border-radius:18px;padding:6px 6px 10px;text-align:center;font-size:12px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.type img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:13px;margin-bottom:7px}
.type:hover{border-color:var(--rose)}
.type[aria-pressed=true]{border:2px solid var(--rose-dark);padding:5px 5px 9px;box-shadow:0 6px 18px #ae7c6922}
.type b{display:block;font-size:13px}
.type small{font-size:10px;color:var(--muted)}
.picker-tools{display:flex;gap:8px;margin-bottom:12px}
.picker-tools input{flex:1;min-width:0;border:1px solid var(--line);border-radius:30px;padding:9px 16px;background:#fff;font-size:13px}
.picks{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;max-height:420px;overflow:auto;padding:2px}
.pick{position:relative;border:1px solid var(--line);background:#fff;border-radius:18px;padding:0;overflow:hidden;text-align:right;color:var(--ink);transition:border-color .2s}
.pick img{width:100%;aspect-ratio:1;object-fit:cover;display:block;background:var(--sand)}
.pick span{display:block;padding:9px 11px 0;font-size:12px;font-weight:bold;line-height:1.7;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pick small{display:block;padding:0 11px 10px;font-size:11px;color:var(--muted)}
.pick:hover{border-color:var(--rose)}
.pick[aria-pressed=true]{border:2px solid var(--rose-dark)}
.pick[aria-pressed=true]::after{content:"";position:absolute;top:9px;left:9px;width:24px;height:24px;border-radius:50%;background:var(--rose-dark) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4 8.5l2.5 2.5L12 5.5' fill='none' stroke='%23fff' stroke-width='2'/%3E%3C/svg%3E") center/14px no-repeat}
.pick .sample{position:absolute;top:9px;right:9px;background:#fcfaf8e6;border-radius:20px;font-size:10px;padding:2px 9px;color:var(--muted)}
.picks-empty{grid-column:1/-1;border:1px dashed var(--line);border-radius:18px;padding:26px 16px;text-align:center;font-size:12px;color:var(--muted)}
.modes{display:grid;gap:10px}
.mode{display:flex;gap:12px;align-items:flex-start;border:1px solid var(--line);border-radius:16px;padding:13px 14px;background:#fff;cursor:pointer;font-size:13px}
.mode input{accent-color:var(--rose-dark);margin-top:6px}
.mode b{display:block;font-size:13px}
.mode small{font-size:11px;color:var(--muted);line-height:1.8}
.mode:has(input:checked){border-color:var(--rose-dark);background:#fffaf7}
.summary{display:grid;gap:12px}
.summary .chosen{display:flex;gap:12px;align-items:center;font-size:12px;color:var(--muted)}
.summary .chosen img{width:48px;height:48px;border-radius:12px;object-fit:cover}
.summary .chosen b{display:block;color:var(--ink);font-size:13px}
.summary .btn{width:100%}
.summary .note{font-size:11px;color:var(--muted);line-height:1.9;margin:0}
.status{font-size:12px;border-radius:14px;padding:10px 14px;background:var(--sand);color:var(--ink);margin:0}
.status.error{background:#f6e2de;color:#a2483d}

/* ---------- history & guide ---------- */
.history{padding:10px 0 30px}
.history h2,.guide h2{font-size:22px;margin:0 0 4px}
.history-list{display:flex;gap:14px;overflow-x:auto;padding:14px 2px 6px}
.history-item{flex:0 0 200px;border:1px solid var(--line);background:var(--paper);border-radius:20px;overflow:hidden;padding:0;text-align:right;color:var(--ink)}
.history-item img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.history-item span{display:block;padding:9px 12px;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.history-item.active{border:2px solid var(--rose-dark)}
.guide{padding:40px 0 100px}
.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:22px}
.guide-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;padding:22px}
.guide-card h3{font-size:15px;margin:0 0 6px}
.guide-card p{font-size:12px;margin:0;line-height:2}
.guide-card .num{font-size:12px;color:var(--rose-dark);margin-bottom:10px;display:block}

@media(max-width:1100px){
 .studio-hero{grid-template-columns:1fr;gap:22px}
 .studio-layout{grid-template-columns:1fr}
 .stage{position:static}
 .guide-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
 .studio-hero{padding:32px 0 20px}
 .studio-steps-line{display:none}
 .studio-hero h1{font-size:26px}
 .stage-frame{min-height:360px}
 .types{grid-template-columns:repeat(2,1fr)}
 .step{padding:18px}
 .result-bar{grid-template-columns:52px 1fr}
 .result-bar img{width:52px;height:52px}
 .result-bar .actions{grid-column:1/-1}
 .result-bar .actions .btn{flex:1 1 45%;min-width:0;padding:8px 10px;font-size:12px}
 .guide-grid{grid-template-columns:1fr}
}