:root { color-scheme: dark light; --bg:#14161a; --panel:#1b1e24; --line:#2a2e37; --fg:#e6e8ee; --dim:#8b91a0; --acc:#7aa2ff;
  --btn:#262a33; --g-odd:#1e222a; --g-even:#171a20; --canvasbg:#15171b; --onbg:#2a3555; --sub:#ffffff09; --sub2:#7aa2ff0e; }
@media (prefers-color-scheme: light) { :root { --bg:#eef1f6; --panel:#ffffff; --line:#d3d8e2; --fg:#1c2130; --dim:#667088; --acc:#2f66d9;
  --btn:#eef1f7; --g-odd:#f6f8fc; --g-even:#ffffff; --canvasbg:#e4e8f0; --onbg:#dbe6ff; --sub:#00000008; --sub2:#2f66d912; } }
* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body { background: var(--bg); color: var(--fg); font: 13px/1.4 system-ui, -apple-system, sans-serif; display: flex; flex-direction: column; }
header { padding: 10px 16px; border-bottom: 1px solid var(--line); font-size: 15px; }
.dim { color: var(--dim); } .small { font-size: 11.5px; }
main { flex: 1; min-height: 0; display: grid; grid-template-columns: var(--lw, 340px) 6px 1fr 6px var(--rw, 400px); }
aside { background: var(--panel); overflow-y: auto; padding: 12px 14px; }
#left { border-right: 1px solid var(--line); } #right {  display: flex; flex-direction: column; gap: 8px; }
h3 { margin: 14px 0 8px; font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--dim); }
h3:first-child { margin-top: 0; }
#view3d { position: relative; min-width: 0; min-height: 0; overflow: hidden; } #view3d canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; }
select, button, .btn { background: var(--btn); color: var(--fg); border: 1px solid var(--line); border-radius: 6px; padding: 6px 10px; font: inherit; cursor: pointer; }
select { width: 100%; }
button:hover, .btn:hover { border-color: var(--acc); } button:disabled { opacity: .4; cursor: default; }
button.primary { background: var(--acc); color: #0b1020; border: 0; font-weight: 600; width: 100%; padding: 9px; margin-bottom: 6px; }
button.wide { width: 100%; }
.btn { display: inline-block; }
.row { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; margin: 8px 0; }
.row input[type=range] { grid-column: 1 / -1; width: 100%; accent-color: var(--acc); }
.row.bool { display: flex; gap: 8px; align-items: center; }
output { color: var(--dim); }
.canvasWrap { position: relative; flex: 1; min-height: 200px; background: var(--canvasbg); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.canvasWrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; cursor: grab; }
#edHint { position: absolute; inset: 0; display: grid; place-content: center; text-align: center; pointer-events: none; color: var(--dim); }
.bar { display: flex; gap: 6px; flex-wrap: wrap; } .bar select { flex: 1; width: auto; }
.chips { display: flex; flex-wrap: wrap; gap: 5px; }
.chip { padding: 3px 9px; border-radius: 99px; font-size: 12px; } .chip.on { border-color: var(--acc); color: var(--acc); }
.ctl { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 12px; }
.ctl label { display: flex; flex-direction: column; color: var(--dim); font-size: 11.5px; } .ctl input { accent-color: var(--acc); }
@media (max-width: 1000px) { .split { display: none; } main { grid-template-columns: 1fr; grid-auto-rows: auto; overflow-y: auto; } #view3d { height: 60vh; } }

.numrow { display: grid; grid-template-columns: 1fr 84px; gap: 4px 8px; align-items: center; margin: 6px 0; }
input[type=number] { background: var(--btn); color: var(--fg); border: 1px solid var(--line); border-radius: 6px; padding: 5px 7px; font: inherit; width: 100%; }
.ctl input[type=number] { margin-top: 2px; }
#exportLinks a { display: block; margin: 4px 0; padding: 7px 10px; background: var(--btn); border: 1px solid var(--acc); border-radius: 6px; color: var(--acc); text-decoration: none; }



.split { background: var(--line); cursor: col-resize; touch-action: none; } .split:hover, .split.on { background: var(--acc); }
#left { padding: 0; }
.grp { padding: 12px 14px 14px; border-left: 3px solid var(--gc); }
.grp h3 { margin: 0 0 9px; color: var(--gc); }
.grp:nth-child(odd) { background: var(--g-odd); } .grp:nth-child(even) { background: var(--g-even); }
.g1 { --gc: #ffb454; } .g2 { --gc: #7aa2ff; } .g3 { --gc: #5fd39a; } .g4 { --gc: #c792ea; } .g5 { --gc: #ff7a90; }
.sg { margin: 10px -4px 0; padding: 4px 10px 6px; border-radius: 8px; background: var(--sub); }
.sg:nth-of-type(even) { background: var(--sub2); }
.sg h4 { margin: 6px 0 2px; font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .07em; color: var(--dim); }
#shapeBtns { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; margin-bottom: 4px; }
.shapeBtn { display: flex; flex-direction: column; align-items: center; gap: 1px; padding: 5px 2px 4px; }
.shapeBtn i { font-style: normal; font-size: 10px; line-height: 1.15; text-align: center; color: var(--dim); }
.shapeBtn.on { border-color: var(--acc); background: var(--onbg); } .shapeBtn.on i { color: #fff; }
.facesRow { margin: 8px 0; } .facesRow > span { display: block; margin-bottom: 4px; }
.faceBtns { display: grid; grid-template-columns: repeat(6, 1fr); gap: 3px; }
.faceBtn { display: flex; flex-direction: column; align-items: center; padding: 3px 0 2px; }
.faceBtn svg { width: 30px; height: 30px; } .faceBtn i { font-style: normal; font-size: 9.5px; color: var(--dim); }
.faceBtn.on { border-color: var(--fc); background: #ffffff10; } .faceBtn.on i { color: var(--fc); }
.warn { margin-top: 8px; padding: 6px 8px; border-radius: 6px; background: #4a2b1d; border: 1px solid #a55a2a; color: #ffc9a3; font-size: 11.5px; }

/* view-cube */
#vc { position: absolute; top: 6px; right: 8px; width: 150px; height: 158px; z-index: 2; user-select: none; }
#vcScene { position: absolute; left: 43px; top: 52px; width: 64px; height: 64px; perspective: 340px; }
#vcCube { position: relative; width: 64px; height: 64px; transform-style: preserve-3d; }
.vcf { position: absolute; inset: 0; display: grid; place-items: center; font-size: 10.5px; font-weight: 600; color: #cfd5e4; background: #d8dbe3cc; border: 1px solid #8b93a5; color: #2a2f3a; backface-visibility: hidden; cursor: pointer; }
.vcf:hover { background: #a9c1ffdd; }
.vcc, .vce, .vaxl { position: absolute; left: 32px; top: 32px; }
.vcc { width: 11px; height: 11px; margin: -5px 0 0 -5px; border-radius: 50%; background: var(--acc); border: 1px solid #0b1020; cursor: pointer; }
.vce { width: 9px; height: 9px; margin: -4px 0 0 -4px; border-radius: 3px; background: #9aa3b8; border: 1px solid #0b1020; cursor: pointer; }
.vcc:hover, .vce:hover { background: #ffb454; }
.vax { position: absolute; left: 32px; top: 31px; width: 78px; height: 2px; transform-origin: 0 50%; pointer-events: none; }
.vaxl { font: 700 12px system-ui; margin: -8px 0 0 -4px; pointer-events: none; text-shadow: 0 0 3px #000; }
#vc button { position: absolute; background: none; border: 0; padding: 0; cursor: pointer; color: var(--dim); }
#vc button svg { fill: currentColor; stroke: currentColor; display: block; }
#vc button:hover { color: var(--fg); }
.vcHome { left: 0; top: 0; width: 28px; height: 28px; } .vcHome svg { width: 26px; height: 26px; fill: none !important; }
.vcRoll { top: 0; width: 34px; height: 34px; } .vcRoll.l { left: 66px; } .vcRoll.r { left: 108px; }
.vcRoll svg { width: 32px; height: 32px; fill: currentColor; }
.vcTri { width: 20px; height: 20px; } .vcTri svg { width: 20px; height: 20px; }
.vcTri.u { left: 65px; top: 32px; } .vcTri.d { left: 65px; top: 118px; transform: rotate(180deg); }
.vcTri.lf { left: 20px; top: 74px; transform: rotate(-90deg); } .vcTri.rt { left: 110px; top: 74px; transform: rotate(90deg); }

/* secțiune */
#secTool { position: absolute; top: 8px; left: 8px; z-index: 2; width: 230px; }
#secBtn { width: 38px; height: 38px; padding: 6px; background: var(--btn); border-radius: 8px; }
#secBtn svg { width: 24px; height: 24px; stroke: var(--fg); fill: none; } #secBtn.on { border-color: #ffb454; background: #4a3a22e6; } #secBtn.on svg { stroke: #ffb454; }
#secPanel { margin-top: 6px; padding: 8px 10px 4px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
#secPanel[hidden] { display: none; }

.ibtn { padding: 5px 7px; display: inline-flex; align-items: center; justify-content: center; line-height: 0; }
.ibtn svg, #addBtn svg { display: block; } #addBtn { display: inline-flex; align-items: center; gap: 6px; }

.reset { margin-left: 6px; font-size: 10.5px; color: var(--acc); cursor: pointer; text-decoration: underline; }
.faceBtn:disabled { opacity: .35; cursor: not-allowed; }

header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.proj { display: flex; gap: 6px; align-items: center; } .proj input { width: 190px; background: var(--btn); color: var(--fg); border: 1px solid var(--line); border-radius: 6px; padding: 5px 8px; font: inherit; }
.canvasWrap { border: 2px solid #22d3ee66; }

#partsTool { position: absolute; left: 8px; bottom: 8px; z-index: 2; display: none; gap: 5px; align-items: center; flex-wrap: wrap; max-width: 60%; padding: 5px 7px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; opacity: .95; }
#partsPop { position: absolute; left: 8px; bottom: 44px; z-index: 2; display: none; gap: 8px; align-items: center; padding: 5px 8px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; opacity: .97; }
.partBtn { display: inline-flex; align-items: center; gap: 5px; padding: 3px 8px; font-size: 12px; } .partBtn.off { opacity: .55; text-decoration: line-through; }
#exportLinks a.zip { border-color: #5fd39a; color: #5fd39a; font-weight: 600; }

/* card sus: tip proiect + grosime, mereu vizibil deasupra proprietăților */
#topCard { position: sticky; top: 0; z-index: 5; background: var(--panel); padding: 10px 14px 12px; border-bottom: 2px solid var(--acc); box-shadow: 0 8px 12px -10px #000c; }
.tcHead { font-size: 10.5px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; color: var(--acc); margin: 2px 0 6px; } .tcHead:not(:first-child) { margin-top: 10px; }
#shapeBtns { grid-template-columns: repeat(4, 1fr); gap: 4px; margin-bottom: 0; }
.thickGrid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px 8px; }
.thickGrid .numrow { display: flex; flex-direction: column; gap: 2px; margin: 0; font-size: 11px; color: var(--dim); } .thickGrid .row { grid-column: 1 / -1; margin: 0; }
#propsTitle { display: block; margin: 0 -14px 8px; padding: 7px 14px; background: var(--acc); color: #0b1020; font-size: 11.5px; letter-spacing: .07em; }
:root { --acc-ink: #0b1020; }
.ibtn { width: 34px; height: 34px; padding: 0; flex: 0 0 34px; }
.dz { display: flex; gap: 12px; align-items: center; padding: 12px; margin-bottom: 8px; border: 2px dashed var(--acc); border-radius: 10px; background: var(--sub2); cursor: pointer; font-size: 12px; line-height: 1.35; }
.dz:hover, .dz.over { background: var(--onbg); } .dz canvas { flex: none; border-radius: 6px; background: var(--canvasbg); }

.info { margin-top: 6px; padding: 5px 8px; border-radius: 6px; background: var(--sub2); border: 1px solid var(--line); color: var(--dim); font-size: 11.5px; }

.colorBox { padding: 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--sub2); } .colorBox .tcHead { color: #e83e9a; }
.olBox { margin: 10px 0 4px; padding-top: 8px; border-top: 1px solid var(--line); } .olBox .tcHead { color: var(--fg, inherit); } .olBox .olCol { display: flex; align-items: center; gap: 8px; margin: 8px 0; } .olBox .olCol input { width: 44px; height: 32px; padding: 0; border: 1px solid var(--line); border-radius: 6px; background: none; }
.zoneBtn { width: 38px; height: 38px; padding: 0; display: inline-flex; align-items: center; justify-content: center; } .zoneBtn.on, #colEdit.on { border-color: #e83e9a; background: #e83e9a26; }
#colEdit { margin: 6px 0; }

.seg { display: flex; margin: 6px 0; } .seg button { flex: 1; border-radius: 0; } .seg button:first-child { border-radius: 6px 0 0 6px; } .seg button:last-child { border-radius: 0 6px 6px 0; border-left: 0; }
.seg button.on { background: #e83e9a26; border-color: #e83e9a; color: var(--fg); font-weight: 600; }

.viewSeg button { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 8px; } .viewSeg button span { font-size: 12px; }
.dg { display: block; width: 100%; height: auto; max-height: 112px; margin: 4px 0 6px; border-radius: 6px; background: var(--canvasbg); }
.dg .sh { fill: none; stroke: var(--dim); stroke-width: 1.4; stroke-linejoin: round; } .dg .fl { fill: #7aa2ff22; } .dg .fl2 { fill: #7aa2ff40; } .dg .fl3 { fill: #ffffff14; } .dg .lid { fill: #5fd39a44; stroke: #5fd39a; stroke-width: 1.4; }
.dg .sp { stroke-dasharray: 3 3; } .dg .dm line { stroke: #ffb454; stroke-width: 1; } .dg .dm text { fill: #ffb454; font: 600 8.5px system-ui; }
.dg .lb { fill: var(--fg); font: 600 8.5px system-ui; } .dg .lb2 { fill: var(--dim); font: 8px system-ui; } .dg .g { fill: #5fd39a; } .dg .a { fill: #ffb454; }

.sgBody.two { display: grid; grid-template-columns: minmax(84px, 40%) 1fr; gap: 0 10px; align-items: start; }
.sgBody.two .sgDiag { position: sticky; top: 210px; cursor: zoom-in; } .sgBody.two .dg { max-height: none; margin: 2px 0; }
.sgBody.two .faceBtns { grid-template-columns: repeat(3, 1fr); row-gap: 4px; }
.sgBody.two .row { margin: 6px 0; } .sgBody.two .sgCtl > :first-child { margin-top: 2px; }
#dgPop { position: fixed; z-index: 60; width: 440px; padding: 10px; background: var(--panel); border: 1px solid var(--acc); border-radius: 10px; box-shadow: 0 12px 30px #0009; pointer-events: none; display: none; }
#dgPop .dg { max-height: none; margin: 0; width: 100%; }

.bbl { grid-template-columns: 1fr; } .bbl input { width: 100%; background: var(--btn); color: var(--fg); border: 1px solid var(--line); border-radius: 6px; padding: 5px 8px; font: inherit; }

.print { margin: 8px 0; font-size: 12px; } .print summary { cursor: pointer; color: var(--acc); } .print p { margin: 6px 0; }

#spokeTool { position: absolute; inset: 0; pointer-events: none; z-index: 1; } #spokeTool input { position: absolute; width: 16px; height: 16px; pointer-events: auto; accent-color: #ffb454; cursor: pointer; }

/* iconițe colorate în panoul din dreapta */
#btnRotL, #btnRotR { color: #4f8cff; } #btnFit { color: #22b07d; } #btnFlip { color: #b06cf5; } #btnUp { color: #f5a524; } #btnDown { color: #14b8c6; } #btnDel { color: #ef5350; } #addBtn svg { color: #4f8cff; }
.ibtn:hover, #addBtn:hover { filter: brightness(1.15); }
.partRow { display: inline-flex; align-items: center; gap: 2px; }
.partTr { padding: 3px 5px !important; }
.partTr.on { color: var(--acc, #4f8cff); }
#partsPop label { display: flex; align-items: center; gap: 4px; font-size: 12px; }
#partsPop input[type=range] { width: 90px; }
#partsPop input[type=color] { width: 24px; height: 22px; padding: 0; border: none; background: none; cursor: pointer; }
#partsPop .mini { font-size: 11px; padding: 2px 8px; }

/* ===== UX pentru începători: ghid în 3 pași, buton principal, toast-uri, secțiuni pliabile ===== */
:root { --ok: #22a06b; --ring: color-mix(in srgb, var(--acc, #4f8cff) 45%, transparent); }
.guide { margin: 8px 8px 4px; padding: 12px 12px 10px; border: 1px solid var(--line); border-radius: 12px; background: linear-gradient(180deg, color-mix(in srgb, var(--acc, #4f8cff) 9%, var(--panel)), var(--panel)); }
.guideLead { margin: 0 0 8px; font-size: 14px; line-height: 1.4; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; counter-reset: st; }
.steps li { position: relative; padding: 8px 6px 8px 34px; border: 1px solid var(--line); border-radius: 10px; font-size: 13px; line-height: 1.25; background: var(--panel); transition: border-color .25s, background .25s, transform .25s; }
.steps li::before { counter-increment: st; content: counter(st); position: absolute; left: 7px; top: 8px; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 13px; background: var(--btn, rgba(127,127,127,.2)); color: var(--fg); }
.steps li span { display: block; color: var(--dim); font-size: 11.5px; }
.steps li.done { border-color: var(--ok); } .steps li.done::before { content: "✓"; background: var(--ok); color: #fff; }
.steps li.now { border-color: var(--acc, #4f8cff); background: color-mix(in srgb, var(--acc, #4f8cff) 12%, var(--panel)); box-shadow: 0 0 0 3px var(--ring); }
.steps li.now::before { background: var(--acc, #4f8cff); color: #fff; }
.guideNext { margin: 8px 0 0; font-size: 13.5px; font-weight: 600; min-height: 1.3em; }
.stepNo { display: inline-grid; place-items: center; width: 20px; height: 20px; margin-right: 4px; border-radius: 50%; background: var(--acc, #4f8cff); color: #fff; font-size: 12px; font-weight: 700; }
.propTools { margin: 0 0 6px; } .ghost { background: transparent; border: 1px dashed var(--line); color: var(--dim); font-size: 12.5px; padding: 5px 9px; border-radius: 8px; cursor: pointer; } .ghost:hover { color: var(--fg); border-color: var(--fg); }
button.primary.big { display: flex; align-items: center; justify-content: center; gap: 10px; width: 100%; min-height: 52px; font-size: 16px; font-weight: 700; border-radius: 12px; background: linear-gradient(135deg, var(--acc, #4f8cff), color-mix(in srgb, var(--acc, #4f8cff) 60%, #7c4dff)); color: #fff; border: 0; box-shadow: 0 6px 18px -6px var(--acc, #4f8cff); cursor: pointer; transition: transform .15s, box-shadow .2s; }
button.primary.big:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 10px 22px -8px var(--acc, #4f8cff); } button.primary.big:active:not(:disabled) { transform: translateY(0) scale(.99); }
button.primary.big:disabled { opacity: .75; cursor: progress; } button.primary.big:disabled span::after { content: " …"; }
button.primary.big.attn { animation: attn 1.8s ease-out infinite; }
@keyframes attn { 0% { box-shadow: 0 0 0 0 var(--ring), 0 6px 18px -6px var(--acc, #4f8cff); } 70% { box-shadow: 0 0 0 12px transparent, 0 6px 18px -6px var(--acc, #4f8cff); } 100% { box-shadow: 0 0 0 0 transparent, 0 6px 18px -6px var(--acc, #4f8cff); } }
.hint { margin: 6px 2px 8px; font-size: 12.5px; color: var(--dim); line-height: 1.4; } details.adv { margin: 6px 0; font-size: 12.5px; } details.adv summary { cursor: pointer; color: var(--dim); padding: 4px 0; }
#edHint { text-align: center; font-size: 14px; line-height: 1.6; padding: 14px; } .edBig { font-size: 17px; } .cta { margin: 10px 0 4px; padding: 10px 16px; min-height: 44px; font-size: 15px; font-weight: 600; border-radius: 10px; border: 1px solid var(--acc, #4f8cff); background: color-mix(in srgb, var(--acc, #4f8cff) 14%, var(--panel)); color: var(--fg); cursor: pointer; }
.cta:hover { background: color-mix(in srgb, var(--acc, #4f8cff) 26%, var(--panel)); } #edHint .cta { animation: attn 2.2s ease-out infinite; }
#toasts { position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 50; display: flex; flex-direction: column; gap: 8px; align-items: center; width: min(560px, 92vw); pointer-events: none; }
.toast { pointer-events: auto; display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--panel); color: var(--fg); box-shadow: 0 12px 30px -10px rgba(0,0,0,.45); font-size: 14px; line-height: 1.35; animation: toastIn .28s cubic-bezier(.2,.9,.3,1.2); }
.toast.ok { border-color: var(--ok); } .toast.warn { border-color: #f5a524; } .toast b { font-weight: 700; } .toast button { flex: none; min-height: 34px; padding: 4px 12px; border-radius: 8px; cursor: pointer; font-weight: 600; } .toast.out { opacity: 0; transform: translateY(8px); transition: opacity .25s, transform .25s; }
@keyframes toastIn { from { opacity: 0; transform: translateY(12px) scale(.96); } to { opacity: 1; transform: none; } }
.sg > h4 { cursor: pointer; user-select: none; display: flex; align-items: center; gap: 6px; } .sg > h4::before { content: "▾"; display: inline-block; font-size: 12px; color: var(--dim); transition: transform .2s; } .sg.closed > h4::before { transform: rotate(-90deg); } .sg.closed > .sgBody { display: none; }
.sg > h4:focus-visible, button:focus-visible, select:focus-visible, input:focus-visible, summary:focus-visible { outline: 3px solid var(--ring); outline-offset: 2px; border-radius: 6px; }
.warn { border-radius: 10px; } .info { border-radius: 10px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

/* mutarea/rotirea cu mouse-ul a cutiei de baterii / întrerupătorului (vezi nav.js + gizmo.js) */
.part-readout { position: absolute; top: 8px; left: 8px; z-index: 2; max-width: 70%; padding: 5px 10px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; font-size: 12px; color: var(--fg); box-shadow: 0 6px 14px -8px #000a; cursor: help; }
.part-angle-tip { position: absolute; z-index: 3; padding: 2px 7px; background: #14161ae6; color: #ffce80; font-size: 12px; font-weight: 600; border-radius: 6px; pointer-events: none; white-space: nowrap; }