:root{
 --bg:#f5f3ef;--panel:#fff;--ink:#292722;--muted:#858178;--line:#e9e5dd;
 --accent:#6f7c5d;--accent-dark:#4e5c3d;--accent-pale:#edf0e8;
 --sand:#e9dfd2;--brown:#6e5543;--gold:#b49a79;--danger:#a85f50;
 --shadow:0 10px 28px rgba(47,42,34,.055);--radius:18px;
}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:14px}
button,input,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible{outline:3px solid #b9c4a7;outline-offset:2px}
.app{min-height:100vh;display:grid;grid-template-columns:238px minmax(0,1fr)}
.sidebar{background:#fbfaf7;border-right:1px solid var(--line);padding:24px 16px;display:flex;flex-direction:column;gap:28px}
.brand{display:flex;gap:11px;align-items:center;padding:0 10px}
.brand-mark{width:40px;height:40px;border-radius:14px;background:var(--accent-dark);color:white;display:grid;place-items:center;font-family:Georgia,serif;font-size:22px}
.brand-name{font-weight:750;letter-spacing:.2px}.brand-sub{font-size:10px;color:var(--muted);letter-spacing:1.8px;margin-top:3px}
.nav-label{font-size:10px;color:#a39d92;letter-spacing:1.4px;padding:0 12px;margin-bottom:9px}
.nav{display:flex;flex-direction:column;gap:5px}
.nav-link{display:flex;align-items:center;gap:12px;border:0;background:transparent;padding:12px;border-radius:12px;color:#777267;text-align:left;width:100%;transition:.18s}
.nav-link .nav-icon{width:28px;height:28px;border-radius:9px;background:#f1eee8;display:grid;place-items:center;color:#7d796d;font-size:12px;font-weight:700}
.nav-link:hover{background:#f2f0ea}.nav-link.active{background:var(--accent-pale);color:var(--accent-dark);font-weight:700}
.nav-link.active .nav-icon{background:var(--accent-dark);color:white}
.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding:18px 8px 0}
.user{display:flex;align-items:center;gap:10px}.avatar{width:36px;height:36px;border-radius:50%;background:#d9c7b2;color:#5b4939;display:grid;place-items:center;font-weight:700}
.user-name{font-weight:650;font-size:12px}.user-sub{font-size:11px;color:var(--muted);margin-top:3px}
.main{min-width:0;padding:28px 34px 36px;max-width:1600px;width:100%;margin:0 auto}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:26px}
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:7px}.page-title{font-size:25px;letter-spacing:-.6px;margin:0;font-weight:750}
.page-subtitle{color:var(--muted);font-size:12px;margin-top:7px}
.top-actions{display:flex;align-items:center;gap:10px}
.status-pill{border:1px solid #d9dfcf;background:#f2f5ee;color:#536246;border-radius:100px;padding:8px 11px;font-size:11px;white-space:nowrap}
.btn{border:1px solid var(--line);background:white;border-radius:11px;padding:10px 14px;color:var(--ink);font-weight:650;transition:.18s;display:inline-flex;align-items:center;justify-content:center;gap:7px}
.btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #2927220d}
.btn.primary{background:var(--accent-dark);border-color:var(--accent-dark);color:white}
.btn.primary:hover{background:#3e4a31}.btn.soft{background:var(--accent-pale);border-color:#e2e8d9;color:var(--accent-dark)}
.btn.small{font-size:11px;padding:7px 10px;border-radius:9px}.btn.ghost{background:transparent}
.page{display:none;animation:fade .22s ease}.page.active{display:block}
@keyframes fade{from{opacity:.5;transform:translateY(3px)}to{opacity:1;transform:none}}
.stepper{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:18px}
.step{display:flex;align-items:center;gap:11px;padding:13px 15px;background:#eeece6;border:1px solid transparent;border-radius:13px;color:#878277}
.step.active{background:white;border-color:#d9dfcf;box-shadow:var(--shadow);color:var(--ink)}
.step-number{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:#e1ddd4;color:#797365;font-size:11px;font-weight:800}
.step.active .step-number{background:var(--accent-dark);color:white}
.step-name{font-weight:700;font-size:12px}.step-note{font-size:10px;color:var(--muted);margin-top:3px}
.workspace{display:grid;grid-template-columns:minmax(290px, .78fr) minmax(440px,1.35fr);gap:18px;align-items:start}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:19px 20px 15px;border-bottom:1px solid #f1eee8}
.panel-title{font-weight:750;font-size:15px}.panel-desc{color:var(--muted);font-size:11px;margin-top:5px;line-height:1.5}
.panel-body{padding:18px 20px}
.section-label{font-size:11px;font-weight:750;color:#5f5b51;margin-bottom:10px;display:flex;justify-content:space-between;align-items:center}
.upload-zone{border:1.5px dashed #d6d0c5;background:#faf9f6;border-radius:15px;padding:13px;display:flex;gap:13px;align-items:center;min-height:125px}
.upload-thumb{width:78px;height:100px;object-fit:contain;object-position:center;background:#f7f7f8;border-radius:10px;flex-shrink:0;padding:2px}
.upload-copy{min-width:0}.upload-copy strong{font-size:12px;display:block;margin-bottom:6px}.upload-copy p{font-size:10px;line-height:1.55;color:var(--muted);margin:0 0 9px}
.hidden{display:none!important}.file-actions{display:flex;gap:6px;flex-wrap:wrap}
.divider{height:1px;background:#f0ede7;margin:18px 0}
.option-group{margin-bottom:18px}.option-row{display:flex;gap:7px;flex-wrap:wrap}
.option{border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 11px;color:#69655b;font-size:11px;min-width:65px}
.option.selected{border-color:#7c8969;background:var(--accent-pale);color:var(--accent-dark);font-weight:750;box-shadow:inset 0 0 0 1px #7c89691a}
.color-option{display:flex;align-items:center;gap:7px}.swatch{width:17px;height:17px;border-radius:50%;border:1px solid #00000018;display:inline-block;flex-shrink:0}.color-option{padding:8px 9px;min-width:0}
.style-card{flex:1;min-width:110px;border:1px solid var(--line);border-radius:12px;padding:11px 12px;background:#fff;text-align:left;color:#4d493f}
.style-card.selected{border-color:#7c8969;background:#f4f6f0;box-shadow:inset 0 0 0 1px #7c896933}
.style-preview{height:58px;display:flex;align-items:center;justify-content:flex-start;gap:8px;margin-bottom:8px;overflow:hidden;border-radius:8px;background:#f4f0e8}
.style-preview img{width:52px;height:58px;object-fit:cover;object-position:top;border-radius:8px;display:block}
.style-card strong{font-size:12px}.style-card small{display:block;color:var(--muted);font-size:10px;margin-top:4px}
.generate-wrap{margin-top:20px}.generate-wrap .btn{width:100%;padding:13px}
.micro-note{font-size:10px;color:var(--muted);line-height:1.6;margin-top:10px}
.generation-message{margin-top:12px;padding:12px;border-radius:10px;background:#f2f5ee;color:#405038;font-size:12px;line-height:1.6;overflow-wrap:anywhere}
.generation-message.error{background:#fff0ed;color:#943d2c}
.generation-message[hidden]{display:none}
button:disabled{opacity:.6;cursor:wait}
#result-kind.ai{background:#e5eddf;color:#3b5733}
.preview-panel{min-height:620px}.preview-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.view-tabs{display:flex;background:#f4f2ed;border-radius:10px;padding:3px;gap:2px}
.view-tab{border:0;background:transparent;padding:7px 10px;border-radius:8px;color:#777267;font-size:10px}
.view-tab.active{background:white;color:#35342e;box-shadow:0 1px 4px #0000000a;font-weight:750}
.preview-stage{padding:16px 18px 18px}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.photo-card{min-width:0;border:1px solid #eee9e1;border-radius:14px;overflow:hidden;background:#f8f6f2}
.photo-head{padding:10px 12px;display:flex;justify-content:space-between;align-items:center;font-size:11px;font-weight:750;background:#fbfaf7}
.photo-head span:last-child{font-weight:500;color:var(--muted);font-size:10px}
.photo-frame{height:380px;position:relative;overflow:hidden;background:#f7f7f8;display:flex;align-items:center;justify-content:center;padding:10px}
.photo-frame img{width:100%;height:100%;object-fit:contain;object-position:center;transition:transform .25s}
.photo-foot{padding:10px 12px;color:#7c766b;font-size:10px;display:flex;justify-content:space-between;gap:8px}
.preview-empty{height:330px;display:grid;place-items:center;text-align:center;padding:20px;color:var(--muted);background:#f7f5f0}
.empty-mark{width:50px;height:50px;border-radius:15px;background:#ece8df;margin:0 auto 12px;display:grid;place-items:center;font-size:20px;color:#887d6e}
.result-note{margin-top:12px;border-radius:11px;background:#f7f4ee;padding:11px 13px;display:flex;gap:9px;align-items:flex-start;font-size:10px;line-height:1.55;color:#71685c}
.result-note b{color:#4e483e}
.result-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:13px}
.quick-presets{margin-top:18px}.preset-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}
.preset{border:1px solid var(--line);border-radius:13px;padding:8px;background:#fff;text-align:left;min-width:0;transition:.18s}
.preset:hover,.preset.selected{border-color:#889477;box-shadow:0 5px 14px #0000000a}
.preset img{width:100%;height:180px;object-fit:contain;object-position:center;border-radius:8px;background:#f7f7f8;padding:4px}
.preset strong{font-size:11px;display:block;margin:8px 2px 3px}.preset small{font-size:10px;color:var(--muted);margin:0 2px}
.page-intro{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:18px}.page-intro h2{margin:0;font-size:21px;letter-spacing:-.4px}.page-intro p{color:var(--muted);font-size:12px;line-height:1.6;margin:8px 0 0;max-width:660px}
.stat-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px}
.stat-card{padding:18px;background:#fff;border:1px solid var(--line);border-radius:15px;box-shadow:var(--shadow)}
.stat-label{font-size:11px;color:var(--muted)}.stat-value{font-size:25px;font-weight:780;margin:9px 0 5px}.stat-hint{font-size:10px;color:#7a8767}
.toolbar{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:15px;flex-wrap:wrap}
.search{border:1px solid var(--line);border-radius:10px;background:white;padding:10px 12px;min-width:220px;color:var(--ink)}
.filter-row{display:flex;gap:6px;flex-wrap:wrap}.filter{border:1px solid var(--line);background:white;border-radius:9px;padding:8px 11px;font-size:11px;color:#777267}.filter.active{background:var(--accent-pale);border-color:#dce3d3;color:var(--accent-dark);font-weight:700}
.history-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.asset-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.history-card,.asset-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:10px;box-shadow:var(--shadow);min-width:0}
.history-image,.asset-image{width:100%;height:220px;object-fit:cover;object-position:top;border-radius:10px;background:#eee7dd}
.card-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:11px}
.card-title{font-size:12px;font-weight:750}.tag{font-size:10px;border-radius:100px;padding:5px 8px;background:#f2f0e9;color:#7c7567;white-space:nowrap}
.card-description{font-size:10px;color:var(--muted);line-height:1.6;margin-top:6px}
.card-actions{display:flex;gap:6px;margin-top:11px}.card-actions .btn{flex:1}
.asset-image{height:280px;object-fit:contain;object-position:center top;background:#f7f7f8}.asset-info{padding:2px 2px 0}.asset-title{font-weight:750;font-size:12px;margin-top:10px}.asset-title-row{display:flex;align-items:center;gap:8px;margin-top:10px}.asset-title-row .asset-title{margin-top:0}.asset-swatch{width:17px;height:17px;border-radius:50%;border:1px solid #0002;flex-shrink:0}.asset-kind{margin-left:auto;font-size:9px;color:#7a7469;background:#f4f1eb;padding:4px 6px;border-radius:99px}.asset-view-tabs{display:flex;gap:7px;margin:0 0 14px;padding:4px;background:#eeece6;border-radius:13px;width:max-content;max-width:100%}.asset-view-tab{border:0;background:transparent;color:#777267;padding:10px 16px;border-radius:10px;font-size:12px}.asset-view-tab.active{background:white;color:var(--accent-dark);font-weight:750;box-shadow:0 2px 7px #0000000a}.asset-tags{display:flex;gap:5px;flex-wrap:wrap;margin:7px 0 10px}.asset-tag{font-size:10px;color:#766e61;background:#f5f2ec;padding:5px 7px;border-radius:6px}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.setting-row{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:15px 0;border-bottom:1px solid #f0ede7}
.setting-row:last-child{border-bottom:0}.setting-title{font-size:12px;font-weight:700}.setting-desc{font-size:10px;color:var(--muted);line-height:1.5;margin-top:5px}
.switch{appearance:none;width:38px;height:22px;border-radius:99px;background:#ded9cf;position:relative;transition:.2s;flex-shrink:0}
.switch:before{content:"";width:16px;height:16px;position:absolute;top:3px;left:3px;border-radius:50%;background:white;box-shadow:0 1px 3px #0002;transition:.2s}
.switch:checked{background:var(--accent)}.switch:checked:before{left:19px}
.select-control{border:1px solid var(--line);border-radius:9px;padding:9px 11px;background:white;color:#5b574e;min-width:140px;font-size:11px}
.info-box{padding:14px;background:#f6f4ee;border-radius:12px;font-size:11px;line-height:1.7;color:#6d665b}
.toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:#2e3528;color:white;padding:12px 17px;border-radius:12px;box-shadow:0 8px 30px #0002;transition:.25s;z-index:50;font-size:12px}
.toast.show{opacity:1;transform:translate(-50%,0)}
.modal{position:fixed;inset:0;background:#1c1b18d9;z-index:60;display:none;align-items:center;justify-content:center;padding:24px}
.modal.show{display:flex}.modal-inner{max-width:900px;width:100%;max-height:90vh;position:relative;display:flex;justify-content:center}
.modal img{max-width:100%;max-height:85vh;object-fit:contain;border-radius:12px}.modal-close{position:absolute;right:-8px;top:-42px;background:white;border:0;border-radius:100px;padding:9px 13px}
.footer-note{font-size:10px;color:#a09a8e;text-align:center;margin-top:30px}
@media(max-width:1120px){.app{grid-template-columns:205px minmax(0,1fr)}.main{padding:24px 22px}.workspace{grid-template-columns:minmax(270px,.8fr) minmax(370px,1.2fr)}.photo-frame{height:290px}.history-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.asset-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:850px){.app{grid-template-columns:1fr}.sidebar{padding:12px 14px;gap:10px;border-right:0;border-bottom:1px solid var(--line)}.brand{padding:0 4px}.sidebar .nav-label,.sidebar-bottom{display:none}.nav{flex-direction:row;overflow:auto}.nav-link{min-width:max-content;padding:9px 10px}.nav-link .nav-icon{width:24px;height:24px}.main{padding:20px 14px}.workspace{grid-template-columns:1fr}.preview-panel{min-height:0}.photo-frame{height:350px}.topbar{align-items:flex-start}.top-actions{flex-direction:column;align-items:flex-end}.status-pill{display:none}.settings-grid{grid-template-columns:1fr}}
@media(max-width:540px){.page-title{font-size:21px}.topbar{gap:10px}.top-actions .btn{padding:9px 10px}.stepper{gap:5px}.step{padding:9px 7px;gap:6px}.step-number{width:24px;height:24px;border-radius:8px}.step-name{font-size:10px}.step-note{display:none}.compare-grid{gap:7px}.panel-head,.panel-body{padding-left:14px;padding-right:14px}.preview-stage{padding:12px}.photo-frame{height:240px}.photo-head{padding:8px}.photo-foot{padding:8px}.preset-grid{gap:6px}.preset{padding:6px}.preset img{height:80px}.history-grid{grid-template-columns:1fr 1fr;gap:8px}.asset-grid{grid-template-columns:1fr 1fr;gap:8px}.history-image{height:165px}.asset-image{height:220px}.stat-row{gap:7px}.stat-card{padding:12px}.stat-value{font-size:21px}.search{min-width:100%;width:100%}}

/* V1.5 visual polish: consistent card rhythm and full-image framing */
.quick-presets{margin-top:16px}
.preset-grid{gap:9px;align-items:stretch}
.preset{
  display:flex;flex-direction:column;height:100%;padding:8px;
  border-radius:14px;overflow:hidden;
}
.preset img{
  display:block;width:100%;height:clamp(145px,12vw,176px);
  object-fit:contain;object-position:center;
  border-radius:10px;background:#f7f7f8;padding:6px;
}
.preset strong{font-size:11px;line-height:1.4;min-height:30px;margin:9px 2px 3px}
.preset small{display:block;font-size:10px;line-height:1.45;min-height:27px;margin:0 2px 3px}
.photo-card{display:flex;flex-direction:column}
.photo-frame{
  height:clamp(300px,30vw,400px);padding:12px;
  background:#f7f7f8;
}
.photo-frame img{
  display:block;width:100%;height:100%;max-width:100%;max-height:100%;
  object-fit:contain;object-position:center;
}
.upload-thumb{
  object-fit:contain;object-position:center;background:#f7f7f8;
}
@media(max-width:1120px){
  .photo-frame{height:clamp(300px,34vw,360px);padding:10px}
  .preset img{height:158px}
}
@media(max-width:540px){
  .photo-frame{height:260px;padding:7px}
  .preset-grid{gap:7px}
  .preset{padding:6px}
  .preset img{height:138px;padding:4px}
  .preset strong{font-size:10px;min-height:29px}
  .preset small{font-size:9px;min-height:26px}
}


/* V1.6 image lightbox: click to view, zoom, pan, and close */
#hair-image-lightbox{
  position:fixed;inset:0;z-index:99999;display:none;
  align-items:center;justify-content:center;
  background:rgba(8,10,13,.92);padding:64px 24px 76px;
  box-sizing:border-box;overscroll-behavior:contain;
}
#hair-image-lightbox.is-open{display:flex}
#hair-image-lightbox .lightbox-stage{
  position:relative;width:100%;height:100%;display:flex;
  align-items:center;justify-content:center;overflow:hidden;
  touch-action:none;user-select:none;-webkit-user-select:none;
}
#hair-image-lightbox .lightbox-image{
  display:block;max-width:100%;max-height:100%;width:auto;height:auto;
  object-fit:contain;transform-origin:center center;
  cursor:grab;will-change:transform;pointer-events:none;
  box-shadow:0 12px 48px rgba(0,0,0,.24);border-radius:3px;
}
#hair-image-lightbox.is-zoomed .lightbox-image{cursor:grabbing}
#hair-image-lightbox .lightbox-toolbar{
  position:absolute;z-index:2;left:50%;bottom:18px;transform:translateX(-50%);
  display:flex;align-items:center;gap:8px;padding:8px 10px;
  color:#fff;background:rgba(30,32,36,.78);border:1px solid rgba(255,255,255,.18);
  border-radius:999px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}
#hair-image-lightbox .lightbox-btn{
  width:38px;height:38px;display:flex;align-items:center;justify-content:center;
  border:0;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;
  font-size:23px;line-height:1;cursor:pointer;transition:background .15s;
}
#hair-image-lightbox .lightbox-btn:hover{background:rgba(255,255,255,.24)}
#hair-image-lightbox .lightbox-btn:focus-visible{outline:2px solid #fff;outline-offset:2px}
#hair-image-lightbox .lightbox-zoom-label{
  min-width:48px;text-align:center;font-size:12px;font-variant-numeric:tabular-nums;
}
#hair-image-lightbox .lightbox-close{
  position:absolute;right:20px;top:18px;z-index:3;width:44px;height:44px;
  display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.2);
  border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:30px;
  line-height:1;cursor:pointer;
}
#hair-image-lightbox .lightbox-close:hover{background:rgba(255,255,255,.24)}
#hair-image-lightbox .lightbox-hint{
  position:absolute;left:50%;top:24px;transform:translateX(-50%);
  color:rgba(255,255,255,.78);font-size:12px;text-align:center;white-space:nowrap;
  pointer-events:none;
}
#hair-image-lightbox .lightbox-caption{
  position:absolute;left:50%;bottom:82px;transform:translateX(-50%);
  max-width:90%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
  color:rgba(255,255,255,.9);font-size:13px;text-align:center;pointer-events:none;
}
#after-image{cursor:zoom-in}
@media(max-width:600px){
  #hair-image-lightbox{padding:58px 8px 90px}
  #hair-image-lightbox .lightbox-hint{top:17px;font-size:11px}
  #hair-image-lightbox .lightbox-close{right:12px;top:10px;width:40px;height:40px}
  #hair-image-lightbox .lightbox-toolbar{bottom:16px;gap:6px;padding:6px 8px}
  #hair-image-lightbox .lightbox-btn{width:40px;height:40px}
  #hair-image-lightbox .lightbox-caption{bottom:76px}
}