:root{--pri:#0f766e;--pri2:#115e59;--bg:#f3f6f8;--card:#fff;--txt:#1f2937;--mut:#6b7280;--bd:#e5e7eb;--red:#dc2626}
*{box-sizing:border-box}
body{margin:0;font-family:'Hind Siliguri',system-ui,sans-serif;background:var(--bg);color:var(--txt);font-size:16px;line-height:1.55}
a{color:var(--pri)}
.topbar{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;padding:10px 20px;background:linear-gradient(90deg,#0f766e,#047857);color:#fff;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.brand{color:#fff;text-decoration:none;font-weight:700;font-size:20px;display:flex;align-items:center;gap:8px}
.topbar nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.topbar nav a{color:#e6fffa;text-decoration:none;padding:6px 12px;border-radius:8px}
.topbar nav a.active,.topbar nav a:hover{background:rgba(255,255,255,.18);color:#fff}
.topbar .who{opacity:.85;padding:0 6px;font-size:14px}
.wrap{max-width:1280px;margin:0 auto;padding:20px}
.foot{text-align:center;color:var(--mut);font-size:13px;padding:20px}
.card{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:18px 20px;margin-bottom:18px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.card h2{margin:0 0 12px;font-size:19px;display:flex;align-items:center;gap:10px}
.num{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--pri);color:#fff;font-size:16px}
label{display:block;font-size:14px;font-weight:500;margin-bottom:10px}
input,select{width:100%;padding:9px 11px;border:1px solid #d1d5db;border-radius:9px;font:inherit;margin-top:4px;background:#fff}
input:focus,select:focus{outline:2px solid #99f6e4;border-color:var(--pri)}
input[type=range]{padding:0}
label.check{display:flex;align-items:center;gap:8px}
label.check input{width:auto;margin:0}
.btn,.btn-sm{display:inline-block;padding:9px 16px;border-radius:9px;border:1px solid #cbd5e1;background:#fff;color:var(--txt);font:inherit;cursor:pointer;text-decoration:none;font-weight:500}
.btn:hover{background:#f8fafc}
.btn.primary{background:var(--pri);border-color:var(--pri);color:#fff}
.btn.primary:hover{background:var(--pri2)}
.btn.primary:disabled{background:#94a3b8;border-color:#94a3b8;cursor:not-allowed}
.btn.big{font-size:18px;padding:14px;font-weight:700}
.btn.block{display:block;width:100%;text-align:center}
.btn-sm{padding:4px 10px;font-size:13px}
.topbar .btn-sm{background:rgba(255,255,255,.15);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-sm.danger{color:var(--red);border-color:#fecaca}
.alert{padding:10px 14px;border-radius:9px;margin-bottom:14px;font-size:15px}
.alert.ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}
.alert.err{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}
.alert.info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}
.muted{color:var(--mut)}.small{font-size:13px}.hidden{display:none}
.hero{display:grid;grid-template-columns:1.3fr 1fr;gap:30px;align-items:center;padding:30px 0}
.hero h1{font-size:38px;line-height:1.25;margin:0 0 14px;color:#064e3b}
.hero p{font-size:18px;color:#374151}
.ticks{list-style:none;padding:0}
.ticks li{padding:5px 0 5px 30px;position:relative}
.ticks li:before{content:'✔';position:absolute;left:0;color:var(--pri);font-weight:700}
.auth .tabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:2px solid var(--bd)}
.auth .tabs a{padding:8px 16px;text-decoration:none;color:var(--mut);font-weight:600;border-bottom:3px solid transparent;margin-bottom:-2px}
.auth .tabs a.on{color:var(--pri);border-color:var(--pri)}
.app-grid{display:grid;grid-template-columns:1fr 440px;gap:20px;align-items:start}
.sticky{position:sticky;top:12px}
.drop{display:flex;align-items:center;gap:14px;border:2px dashed #94a3b8;border-radius:12px;padding:22px;cursor:pointer;background:#f8fafc;transition:.2s;font-weight:500}
.drop.over,.drop:hover{border-color:var(--pri);background:#f0fdfa}
.drop-ico{font-size:38px}
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:10px;margin-top:14px}
.gitem{position:relative;border:2px solid var(--bd);border-radius:10px;overflow:hidden;cursor:pointer;background:#fafafa}
.gitem img{width:100%;height:110px;object-fit:contain;display:block;background:#fff}
.gitem.sel{border-color:var(--pri);box-shadow:0 0 0 3px #99f6e4}
.gitem .badge{position:absolute;top:6px;left:6px;background:var(--pri);color:#fff;border-radius:50%;width:24px;height:24px;display:grid;place-items:center;font-size:13px}
.gitem:not(.sel) .badge{display:none}
.gitem .del{position:absolute;top:4px;right:4px;border:0;background:rgba(0,0,0,.55);color:#fff;border-radius:50%;width:24px;height:24px;cursor:pointer}
.gitem .gt{font-size:12px;padding:3px 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--mut)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:4px 16px;align-items:end}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:4px 12px;margin-top:8px;padding:12px;background:#f8fafc;border-radius:10px}
details.adv{margin-top:10px;border-top:1px solid var(--bd);padding-top:10px}
details.adv summary{cursor:pointer;font-weight:600;color:var(--pri);margin-bottom:10px}
.calib{margin-top:12px}
.calib-bar{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.calib-bar label{display:flex;align-items:center;gap:6px;margin:0}
.calib-view{margin-top:10px;max-height:620px;overflow:auto;border:1px solid var(--bd);border-radius:10px;background:#e5e7eb}
.calib-view canvas{width:100%;display:block}
.preview-box{background:#e5e7eb;padding:10px;border-radius:10px;margin-bottom:14px}
.preview-box canvas{width:100%;display:block;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.progress{margin-top:14px}
.progress .bar{height:12px;background:#e5e7eb;border-radius:8px;overflow:hidden}
.progress .bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,#14b8a6,#0f766e);transition:width .2s}
.progress div.small{margin-top:6px}
.result{margin-top:14px}
.dl-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:8px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:14px;margin-bottom:18px}
.stat{background:#fff;border:1px solid var(--bd);border-radius:14px;padding:16px;text-align:center}
.stat b{display:block;font-size:28px;color:var(--pri)}
.stat span{color:var(--mut);font-size:14px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{padding:8px 10px;border-bottom:1px solid var(--bd);text-align:left;white-space:nowrap}
th{background:#f8fafc;font-weight:600}
tr.dim td{opacity:.5}
td.actions form{display:inline}
.tag{background:#ccfbf1;color:#115e59;padding:2px 8px;border-radius:20px;font-size:12px}
@media(max-width:980px){.app-grid,.hero{grid-template-columns:1fr}.sticky{position:static}.grid4{grid-template-columns:1fr 1fr}.hero h1{font-size:30px}}
@media(max-width:560px){.grid2{grid-template-columns:1fr}.wrap{padding:12px}}