:root{--bg:#0b0e14;--surface:rgba(26,74,26,.28);--border:rgba(62,198,62,.14);--green-neon:#3ec63e;--white:#f0f4ff;--grey:#8a94a8;--grey2:#a7b2c6;}
.tool-hero{padding:90px 48px 60px;max-width:1200px;margin:0 auto;}
.tool-hero h1{font-family:'Rajdhani',sans-serif;font-size:clamp(2.4rem,5vw,3.8rem);font-weight:700;color:var(--white);line-height:1.1;margin-bottom:18px;}
.tool-hero h1 em{font-style:normal;color:var(--green-neon);}
.tool-hero p{font-family:'Exo 2',sans-serif;font-size:1rem;color:var(--grey);max-width:600px;line-height:1.75;}
.tool-hero-glow{position:absolute;top:0;left:50%;transform:translateX(-50%);width:600px;height:300px;background:radial-gradient(ellipse at 50% 0%,rgba(62,198,62,.13) 0%,transparent 70%);pointer-events:none;}
.tool-wrap{max-width:1200px;margin:0 auto;padding:0 48px 100px;display:grid;grid-template-columns:340px 1fr;gap:24px;}
@media(max-width:900px){.tool-wrap{grid-template-columns:1fr;padding:0 20px 80px;}.tool-hero{padding:70px 20px 40px;}}
.col-left,.col-right{display:flex;flex-direction:column;gap:16px;}
.tool-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:24px 26px;}
.tool-card-label{font-family:'Rajdhani',sans-serif;font-size:.7rem;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--green-neon);margin-bottom:16px;}
/* Drop zone */
.dropzone{border:2px dashed var(--grey2);border-radius:8px;padding:32px 20px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;margin-bottom:0;user-select:none;}
.dropzone:hover,.dropzone.drag-over{border-color:var(--green-neon);background:rgba(62,198,62,.04);}
.dropzone.loaded{border-color:var(--grey2);border-style:solid;}
.drop-icon{font-size:32px;opacity:.25;margin-bottom:8px;}
.drop-main{font-family:'Exo 2',sans-serif;font-size:.9rem;color:var(--grey);}
.drop-sub{font-family:'Exo 2',sans-serif;font-size:.78rem;color:var(--grey2);margin-top:4px;}
.drop-check{font-size:22px;margin-bottom:6px;color:var(--green-neon);}
.drop-name{font-family:'Rajdhani',sans-serif;font-size:1rem;font-weight:600;color:var(--green-neon);}
.drop-meta{font-family:'Exo 2',sans-serif;font-size:.78rem;color:var(--grey);margin-top:3px;}
/* Info rows */
.info-row{display:flex;justify-content:space-between;align-items:baseline;padding:8px 0;border-bottom:1px solid var(--border);font-family:'Exo 2',sans-serif;font-size:.84rem;color:var(--grey);}
.info-row:last-child{border-bottom:none;padding-bottom:0;}
.info-val{font-family:'Rajdhani',sans-serif;font-weight:700;color:var(--green-neon);font-size:.95rem;}
/* Display mode buttons */
.mode-grid{display:flex;gap:6px;flex-wrap:wrap;}
.mode-btn{flex:1;min-width:60px;padding:8px 6px;border:1px solid var(--border);background:transparent;color:var(--grey);border-radius:6px;font-family:'Rajdhani',sans-serif;font-size:.82rem;font-weight:600;letter-spacing:.06em;cursor:pointer;transition:all .15s;text-align:center;}
.mode-btn:hover{border-color:rgba(255,255,255,.2);color:var(--white);}
.mode-btn.active{border-color:var(--green-neon);color:var(--green-neon);background:rgba(30,80,30,.92);}
/* Color picker row */
.color-row{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap;}
.color-row label{font-family:'Exo 2',sans-serif;font-size:.84rem;color:var(--grey);}
/* Shared 3D-preview color-dot picker */
.color-dots{display:flex;align-items:center;gap:5px;}
.color-dot{width:18px;height:18px;border-radius:50%;cursor:pointer;border:2px solid transparent;transition:border-color .1s,transform .1s;flex-shrink:0;}
.color-dot:hover,.color-dot.active{border-color:#fff;transform:scale(1.15);}
/* Control buttons */
.ctrl-btn{width:100%;padding:9px;border:1px solid var(--border);background:transparent;color:var(--grey);border-radius:6px;font-family:'Rajdhani',sans-serif;font-size:.84rem;font-weight:600;letter-spacing:.08em;cursor:pointer;transition:all .15s;margin-top:8px;}
.ctrl-btn:hover{border-color:rgba(255,255,255,.2);color:var(--white);}
.ctrl-btn.active{border-color:var(--green-neon);color:var(--green-neon);background:rgba(30,80,30,.92);}
/* Canvas card */
.canvas-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;}
#stlCanvas{width:100%;height:500px;display:block;background:var(--bg);}
@media(max-width:900px){#stlCanvas{height:320px;}}
.canvas-hint{text-align:center;padding:8px 0 12px;font-family:'Rajdhani',sans-serif;font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--grey2);}
/* Empty state */
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:500px;opacity:.35;text-align:center;}
.empty-icon{font-size:52px;margin-bottom:16px;opacity:.35;}
.empty-text{font-family:'Exo 2',sans-serif;font-size:.9rem;color:var(--grey);line-height:1.7;}
.error-msg{font-family:'Exo 2',sans-serif;font-size:.8rem;color:#f87171;margin-top:10px;padding:6px 10px;background:rgba(248,113,113,.08);border-radius:4px;border-left:2px solid #f87171;}
.accuracy-note{max-width:1200px;margin:0 auto;padding:28px 48px 60px;border-top:1px solid rgba(255,255,255,.06);}
.accuracy-note p{font-family:'Exo 2',sans-serif;font-size:.78rem;color:var(--grey2);line-height:1.75;margin:0;}
.accuracy-note strong{color:var(--grey);font-weight:600;}
@media(max-width:820px){.accuracy-note{padding:28px 20px 40px;}}
/* ── Site-wide consistency: translucent at rest, fill on hover ── */
.tool-card,.canvas-card{transition:background .2s,border-color .2s;}
.tool-card:hover,.canvas-card:hover{background:rgba(30,80,30,.92);border-color:rgba(62,198,62,.40);}