/* Lumen Imaging Studio 3D · tema corporativo oscuro y minimalista */
:root{
  --bg:#0b0d10; --panel:#11141a; --panel2:#171b23; --line:#222833; --line2:#2f3744;
  --txt:#e6e9ef; --mut:#8b93a3; --acc:#5b8cff; --acc2:#7aa2ff; --ok:#3ecf8e; --bad:#ff6b6b;
  --r:12px; --shadow:0 20px 60px -20px rgba(0,0,0,.6);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html,body{height:100%;background:var(--bg);color:var(--txt);font:14px/1.5 var(--font);-webkit-font-smoothing:antialiased}
body{overflow:hidden}
button,input,label{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}

/* Pantallas de acceso */
.screen{position:fixed;inset:0;display:grid;place-items:center;padding:16px;background:radial-gradient(60% 50% at 50% 30%,rgba(91,140,255,.12),transparent 70%),var(--bg)}
.card{width:min(420px,100%);padding:32px;border:1px solid var(--line2);border-radius:var(--r);background:var(--panel);box-shadow:var(--shadow);text-align:center}
.card h1{font-size:22px;font-weight:600;margin:14px 0 8px}
.card h1 span{color:var(--mut);font-weight:400}
.card p{color:var(--mut);margin-bottom:14px}
.fine{font-size:12.5px;min-height:1em;color:var(--bad)!important}
.gsi{display:flex;justify-content:center;min-height:44px;margin:8px 0}
.price{margin:18px 0}
.price strong{font-size:34px;font-weight:600}
.price small{display:block;color:var(--mut)}
.linkbtn{margin-top:14px;background:none;border:0;color:var(--mut);text-decoration:underline;font-size:13px}

.brand-mark{width:34px;height:34px;margin:0 auto;border-radius:9px;background:linear-gradient(135deg,var(--acc),var(--acc2));box-shadow:0 0 24px -6px var(--acc)}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand .brand-mark{width:26px;height:26px;margin:0}
.brand-name{font-weight:600;white-space:nowrap}
.brand-name span{color:var(--mut);font-weight:400}

/* Botones */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:34px;padding:0 14px;border-radius:8px;border:1px solid var(--line2);background:var(--panel2);font-weight:500;font-size:13.5px;white-space:nowrap;transition:border-color .15s,background .15s}
.btn:hover{border-color:var(--acc)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.primary{background:var(--acc);border-color:var(--acc);color:#fff}
.btn.primary:hover{background:var(--acc2)}
.btn.ghost{background:transparent}
.btn.small{height:28px;padding:0 10px;font-size:12.5px}
.btn.caret{padding:0 9px;border-left:1px solid rgba(255,255,255,.25);border-radius:0 8px 8px 0}
.save-group{position:relative;display:flex}
.save-group .btn:first-child{border-radius:8px 0 0 8px}
.row{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.row.end{justify-content:flex-end}
.muted{color:var(--mut);font-size:13px}

/* Estudio */
.app{position:fixed;inset:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:12px;height:52px;padding:0 14px;border-bottom:1px solid var(--line);background:var(--panel);flex:none}
.proj-name{width:220px;height:32px;padding:0 10px;border-radius:8px;border:1px solid transparent;background:transparent;font-weight:500}
.proj-name:hover,.proj-name:focus{border-color:var(--line2);background:var(--panel2);outline:none}
.spacer{flex:1}
.user{display:flex;align-items:center;gap:8px;color:var(--mut);font-size:12.5px;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.user button{background:none;border:0;color:var(--mut);text-decoration:underline;font-size:12.5px}

.menu{position:absolute;right:0;top:calc(100% + 8px);min-width:260px;max-height:70vh;overflow:auto;padding:6px;border:1px solid var(--line2);border-radius:10px;background:var(--panel);box-shadow:var(--shadow);z-index:50}
.menu h5{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--mut);padding:8px 10px 4px}
.menu button{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;padding:8px 10px;border:0;border-radius:6px;background:none;text-align:left;font-size:13.5px}
.menu button:hover:not(:disabled){background:var(--panel2)}
.menu button:disabled{opacity:.45;cursor:not-allowed}
.menu .badge{font-size:10.5px;padding:2px 7px;border-radius:999px;border:1px solid var(--line2);color:var(--mut);white-space:nowrap}
.menu .ext{font-family:var(--mono);font-size:11px;color:var(--mut)}

.body{flex:1;display:flex;min-height:0}
.rail{width:150px;flex:none;display:flex;flex-direction:column;gap:4px;padding:10px;border-right:1px solid var(--line);background:var(--panel);overflow:auto}
.tool{height:34px;padding:0 10px;border-radius:7px;border:1px solid transparent;background:none;text-align:left;color:var(--mut);font-size:13.5px}
.tool:hover{color:var(--txt);background:var(--panel2)}
.tool.on{color:var(--txt);background:var(--panel2);border-color:var(--line2)}
.tool:disabled{opacity:.35;cursor:not-allowed}
.sub{display:flex;flex-direction:column;gap:2px;padding-left:10px}
.sub button{height:28px;padding:0 8px;border:0;background:none;color:var(--mut);text-align:left;font-size:13px;border-radius:6px}
.sub button:hover{color:var(--txt);background:var(--panel2)}
.sep{height:1px;background:var(--line);margin:8px 0}
/* Herramientas avanzadas: difuminadas y bloqueadas hasta el lanzamiento */
.adv .tool.locked{filter:blur(1.6px);opacity:.55;cursor:not-allowed}
.adv .tool.locked:hover{filter:blur(1.1px);opacity:.75}

.viewport{position:relative;flex:1;min-width:0;overflow:hidden;background:radial-gradient(60% 60% at 50% 40%,rgba(91,140,255,.07),transparent 70%),#0d1016}
.viewport canvas{position:absolute;inset:0;display:block;width:100%;height:100%;outline:none}
.hud{position:absolute;left:12px;bottom:10px;font:500 11.5px var(--mono);color:var(--mut);pointer-events:none}
.lock-label{position:absolute;left:50%;bottom:44px;transform:translateX(-50%);width:min(560px,calc(100% - 32px));padding:12px 16px;border-radius:10px;border:1px solid var(--line2);background:rgba(17,20,26,.94);color:var(--txt);font-size:13.5px;text-align:center;box-shadow:var(--shadow);z-index:20}

.inspector{width:290px;flex:none;overflow:auto;padding:14px;border-left:1px solid var(--line);background:var(--panel)}
.inspector section{margin-bottom:20px}
.inspector h4{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--mut);margin-bottom:8px}
.inspector p{margin-bottom:8px}
.xyz{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:8px}
.xyz label{display:flex;flex-direction:column;gap:3px;font-size:11px;color:var(--mut)}
.xyz input,.range input[type=number]{width:100%;height:30px;padding:0 6px;border-radius:6px;border:1px solid var(--line2);background:var(--panel2);font:500 12px var(--mono)}
.swatches{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin-bottom:10px}
.swatches button{aspect-ratio:1;border-radius:50%;border:2px solid var(--line2)}
.swatches button.on{border-color:var(--txt)}
.range{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--mut);margin-bottom:10px}
.range input{width:100%}

/* Ajustes de herramientas y luces */
.txt{width:100%;height:30px;padding:0 8px;margin-bottom:8px;border-radius:6px;border:1px solid var(--line2);background:var(--panel2);font:500 12.5px var(--font)}
.txt:disabled{opacity:.5}
.grp{margin:10px 0}
.gl{display:block;font-size:11px;color:var(--mut);margin-bottom:2px}
.chk{display:flex;align-items:center;gap:8px;font-size:12.5px;margin:6px 0}
.chk input{width:15px;height:15px;accent-color:var(--acc)}
.fld{display:flex;flex-direction:column;gap:3px;font-size:12px;color:var(--mut);margin-bottom:10px}
.fld.row1{flex-direction:row;align-items:center;justify-content:space-between}
.fld select{height:30px;padding:0 6px;border-radius:6px;border:1px solid var(--line2);background:var(--panel2);color:var(--txt);font-size:12.5px}
.fld input[type=color]{width:46px;height:28px;padding:0;border:1px solid var(--line2);border-radius:6px;background:var(--panel2)}
.range .rl{display:flex;justify-content:space-between}
.range output{font:500 11.5px var(--mono);color:var(--txt)}
.range input:disabled,.chk input:disabled,.fld select:disabled{opacity:.45;cursor:not-allowed}
.btns{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0}
.llist{list-style:none;display:grid;gap:4px;margin:8px 0 12px}
.llist li{display:flex;align-items:center;gap:8px;padding:3px 6px;border:1px solid var(--line);border-radius:7px;background:var(--panel2)}
.llist li.on{border-color:var(--acc)}
.llist li.off .nm{opacity:.5;text-decoration:line-through}
.llist .dot{width:10px;height:10px;border-radius:50%;flex:none;border:1px solid var(--line2)}
.llist .nm{flex:1;min-width:0;text-align:left;background:none;border:0;font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:4px 0}
.llist .eye{background:none;border:0;color:var(--mut);font-size:11px;text-decoration:underline}
.llist .node-check{width:14px;height:14px;accent-color:var(--acc);flex:none}
.llist li.node{padding-left:18px}
.llist .nm[aria-current="true"]{color:var(--acc)}
.fld input[type=file]{max-width:100%;font-size:11.5px;color:var(--mut)}
#ltProps{border-top:1px solid var(--line);padding-top:10px;margin-top:4px}

/* Diálogo de proyectos */
.dlg{width:min(460px,calc(100vw - 24px));padding:0;border:1px solid var(--line2);border-radius:var(--r);background:var(--panel);color:var(--txt);box-shadow:var(--shadow)}
.dlg::backdrop{background:rgba(5,6,8,.6)}
.dlg-in{padding:20px}
.dlg-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}
.dlg h3{font-size:16px;font-weight:600}
.plist{list-style:none;display:grid;gap:6px;max-height:50vh;overflow:auto}
.plist li{display:flex;align-items:center;gap:10px;padding:8px;border:1px solid var(--line);border-radius:8px;background:var(--panel2)}
.plist .thumb{width:56px;height:36px;border-radius:6px;background:#0d1016 center/cover;border:1px solid var(--line);flex:none}
.plist .meta{flex:1;min-width:0}
.plist .meta b{display:block;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.plist .meta small{color:var(--mut)}

@media (max-width:900px){ .inspector{display:none} }
@media (max-width:640px){ .proj-name{width:110px} .user{display:none} .rail{width:120px} }
@media (prefers-reduced-motion:reduce){*{transition:none!important}}