:root{--accent:#0078d7;--accent-d:#005a9e;--bg:#f2f2f2;--card:#fff;--line:#e0e0e0;--text:#1a1a1a;--mut:#6b6b6b;--nav:#e9e9e9}
*{box-sizing:border-box}
html,body{margin:0}
body{font:14px/1.45 "Segoe UI",Tahoma,Arial,sans-serif;color:var(--text);background:var(--bg)}
svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}

.titlebar{position:fixed;top:0;left:0;right:0;height:40px;background:var(--accent);color:#fff;display:flex;align-items:center;z-index:30}
.hamb{width:48px;height:40px;border:0;background:transparent;color:#fff;cursor:pointer;display:grid;place-items:center}
.hamb:hover{background:rgba(255,255,255,.18)}
.title{font-size:14px;font-weight:600;letter-spacing:.2px}

.nav{position:fixed;top:40px;bottom:0;left:0;width:230px;background:var(--nav);border-right:1px solid var(--line);z-index:20;overflow:hidden;transition:width .15s}
.nav a{display:flex;align-items:center;gap:14px;height:46px;padding:0 14px;color:var(--text);text-decoration:none;border-left:4px solid transparent;white-space:nowrap}
.nav a:hover{background:#d9d9d9}
.nav a.on{background:#dcdcdc;border-left-color:var(--accent);font-weight:600}
body.collapsed .nav{width:48px}
body.collapsed .nav a{padding:0 10px}
body.collapsed .nav span{display:none}
.content{margin:40px 0 0 230px;padding:20px 28px 40px;transition:margin .15s}
body.collapsed .content{margin-left:48px}
h1{font-size:28px;font-weight:300;margin:0 0 14px}
h2{font-size:16px;font-weight:600;margin:0 0 12px}

.card{background:var(--card);border:1px solid var(--line);box-shadow:0 1.6px 3.6px rgba(0,0,0,.08);padding:16px 18px;margin:0 0 16px}
.mut{color:var(--mut)}
.hint{color:var(--mut);font-size:12.5px;margin:8px 0}
.sp{flex:1}
.scroll{overflow-x:auto}
.empty{padding:36px;text-align:center;color:var(--mut);background:#fff;border:1px dashed #c8c8c8}

.btn{font:inherit;min-height:32px;padding:4px 16px;background:#cccccc;color:#000;border:2px solid transparent;cursor:pointer}
.btn:hover{border-color:#7a7a7a}
.btn:active{background:#8a8a8a;color:#fff}
.btn.primary{background:var(--accent);color:#fff}
.btn.primary:hover{border-color:#fff;box-shadow:0 0 0 1px var(--accent-d)}
.btn.primary:active{background:var(--accent-d)}
input[type=text],input[type=number],select{font:inherit;height:32px;padding:0 8px;background:#fff;border:2px solid #ccc;min-width:0}
input[type=text]:hover,input[type=number]:hover,select:hover{border-color:#7a7a7a}
input:focus,select:focus{outline:0;border-color:var(--accent)}
input[type=color]{width:38px;height:32px;padding:2px;border:2px solid #ccc;background:#fff;cursor:pointer}
.w90{width:90px}
.row{display:flex;gap:16px;flex-wrap:wrap;align-items:flex-end;margin-bottom:12px}
.row label{display:flex;flex-direction:column;gap:4px;font-size:12.5px;color:var(--mut)}
.row label input,.row label select{color:var(--text);font-size:14px}

.flash{padding:10px 14px;margin:0 0 14px;border-left:4px solid}
.flash.ok{background:#dff6dd;border-color:#107c10}
.flash.err{background:#fde7e9;border-color:#d13438}

.tabs{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:12px;border-bottom:1px solid var(--line)}
.tab{padding:8px 14px;color:var(--mut);text-decoration:none;border-bottom:3px solid transparent;margin-bottom:-1px}
.tab:hover{color:var(--text)}
.tab.on{color:var(--text);border-bottom-color:var(--accent);font-weight:600}
.tab small{color:var(--mut);font-weight:400}
.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin:0 0 10px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 12px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:5px 12px;background:#fff;border:1px solid var(--line);cursor:pointer;user-select:none}
.chip:hover{border-color:#8a8a8a}
.chip input{margin:0;accent-color:var(--accent)}
.chip i,.ptitle i{display:inline-block;width:12px;height:12px}

#charts.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(440px,1fr));gap:14px}
.panel{background:#fff;border:1px solid var(--line);box-shadow:0 1.6px 3.6px rgba(0,0,0,.08);padding:10px 12px}
.ptitle{font-weight:600;margin-bottom:6px;display:flex;align-items:center;gap:8px}
.cbox{position:relative;height:300px}
.cbox.big{height:540px;background:#fff;border:1px solid var(--line);box-shadow:0 1.6px 3.6px rgba(0,0,0,.08);padding:10px}
.cbox canvas{cursor:crosshair}

.tip{position:absolute;display:none;pointer-events:none;background:rgba(255,255,255,.98);border:1px solid #b5b5b5;box-shadow:0 6px 16px rgba(0,0,0,.25);padding:8px 10px;font-size:12px;z-index:6;white-space:nowrap}
.tip .tiph{font-weight:600;margin-top:6px;color:var(--accent-d)}
.tip table{border-collapse:collapse}
.tip th{font-weight:600;color:#555;text-align:right;padding:2px 8px}
.tip td{text-align:right;padding:2px 8px;font-variant-numeric:tabular-nums}
.tip th:first-child,.tip td:first-child{text-align:left}
.tip i{display:inline-block;width:10px;height:10px;margin-right:6px}

.tbl{border-collapse:collapse;width:100%}
.tbl th{background:#f7f7f7;text-align:left;font-weight:600;padding:7px 10px;border-bottom:2px solid var(--line);white-space:nowrap}
.tbl td{padding:6px 10px;border-bottom:1px solid #eee;white-space:nowrap}
.tbl tbody tr:hover{background:#f3f9fd}
.tbl.num td,.tbl.num th{text-align:right;font-variant-numeric:tabular-nums}
#stats td:first-child{font-weight:600}
#stats td:not(:first-child),#stats th:not(:first-child){text-align:right;font-variant-numeric:tabular-nums}

.drop{position:relative;border:2px dashed #b5b5b5;background:#fafafa;padding:28px;text-align:center;margin:0 0 14px}
.drop.over{border-color:var(--accent);background:#eef6fc}
.drop input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}

.exp{display:flex;gap:18px;align-items:flex-start;flex-wrap:wrap}
.exp-prev{width:360px;max-width:100%;aspect-ratio:16/10;background:#fafafa;border:1px solid var(--line);display:grid;place-items:center;overflow:hidden}
.exp-prev img{width:100%;height:100%;object-fit:contain;display:block}
.exp-info{flex:1;min-width:220px}
.exp-info h3{margin:0 0 4px;font-size:16px;font-weight:600}
.acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}


.formula{background:#f4f8fc;border-left:4px solid var(--accent);padding:8px 14px;margin:10px 0;font-size:15px;font-family:"Cambria Math","Segoe UI",serif}
.card p{margin:8px 0}
.card ul{margin:8px 0;padding-left:22px}
.card li{margin:4px 0}

/* lupa e tela grande */
.lupa{position:absolute;top:10px;right:10px;width:30px;height:30px;display:grid;place-items:center;background:#fff;border:1px solid #c8c8c8;color:#333;cursor:pointer;z-index:4;padding:0}
.lupa:hover{background:var(--accent);border-color:var(--accent);color:#fff}
.lupa svg{width:18px;height:18px}
.cbox.big .lupa{top:14px;right:14px}
.cbox canvas{touch-action:pan-y}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:100;display:grid;place-items:center}
.mbox{background:#fff;width:96vw;height:92vh;height:92dvh;display:flex;flex-direction:column;box-shadow:0 10px 40px rgba(0,0,0,.4)}
.mhead{display:flex;align-items:center;gap:8px;padding:8px 12px;background:var(--accent);color:#fff}
.mhead .mtitle{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mhead .btn{min-height:30px;padding:2px 12px}
.cbox.mbig{flex:1;height:auto;min-height:0;padding:10px}
.formula{overflow-x:auto}
.scrim{display:none}

/* celular */
@media (max-width:800px){
  .nav{width:250px;transform:translateX(-100%);transition:transform .18s}
  body.navopen .nav{transform:none;box-shadow:4px 0 16px rgba(0,0,0,.3)}
  body.collapsed .nav{width:250px}
  body.collapsed .nav span{display:inline}
  body.collapsed .nav a{padding:0 14px}
  body.navopen .scrim{display:block;position:fixed;top:40px;left:0;right:0;bottom:0;background:rgba(0,0,0,.35);z-index:15}
  .content,body.collapsed .content{margin-left:0;padding:12px 12px 32px}
  h1{font-size:22px;margin-bottom:10px}
  .card{padding:12px}
  .title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;padding-right:8px}
  .btn{min-height:40px}
  input[type=text],input[type=number],select{height:40px;font-size:16px}
  input[type=color]{height:40px}
  .row{gap:10px}
  .row label{flex:1 1 100%}
  .row label input[type=text],.row label select{width:100%}
  .toolbar select{max-width:100%;flex:1 1 100%}
  #charts.grid{grid-template-columns:1fr}
  .cbox{height:260px}
  .cbox.big{height:380px;padding:6px}
  .tip{font-size:11px;padding:6px 8px}
  .tip th,.tip td{padding:2px 4px}
  .exp-prev{width:100%}
  .exp-info{min-width:0;width:100%}
  .acts .btn{flex:1}
  .mbox{width:100vw;height:100vh;height:100dvh}
  .mhead .btn{min-height:34px}
  .tbl th,.tbl td{padding:6px 8px}
}