:root{--bg:#06121E;--bg2:#0B1E34;--card:rgba(13,27,48,.92);--text:#F3F7FC;--border:#1F2E46;--ring:rgba(37,99,235,.35)}
html,body{margin:0;padding:0;font-family:Inter,system-ui,Arial,sans-serif;background:
linear-gradient(180deg,var(--bg2),var(--bg));color:var(--text)}
a{color:#93c5fd}a:hover{text-decoration:underline}
.site-header{position:sticky;top:0;background:rgba(9,17,29,.8);backdrop-filter:blur(10px);
display:flex;gap:20px;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);z-index:20}
.site-header .logo{font-weight:800;color:#fff}
.container{max-width:1100px;margin:0 auto;padding:24px}
.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:20px;box-shadow:0 10px 40px rgba(0,0,0,.35)}
.input{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.input label{font-size:.92rem}
.input input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:rgba(6,14,24,.6);color:var(--text);outline:none}
.input input:focus{box-shadow:0 0 0 3px var(--ring)}
.row{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 16px;border-radius:12px;background:linear-gradient(180deg,#60a5fa,#3b82f6);color:#0b1221;font-weight:900;border:0;cursor:pointer}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:12px}
.kpi .tile{background:rgba(6,14,24,.8);border:1px solid var(--border);padding:14px;border-radius:14px}
.table-scroll{max-height:280px;overflow:auto;border:1px solid var(--border);border-radius:12px}
th,td{border-bottom:1px solid var(--border);padding:8px;text-align:right}th:first-child,td:first-child{text-align:left}
.site-footer{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:6px}
@media (max-width:900px){.input{grid-template-columns:1fr}.kpi{grid-template-columns:1fr}}

/* --- v2 UI/UX polish --- */
/* Header and logo */
.site-header{position:sticky;top:0;background:rgba(8,14,26,.85);backdrop-filter:blur(10px);
 display:flex;align-items:center;justify-content:space-between;padding:12px 20px;border-bottom:1px solid var(--border);z-index:40}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.brand svg{width:28px;height:28px}
.brand span{font-weight:900;letter-spacing:.2px}

/* Nav buttons */
.site-header nav{display:flex;gap:8px;flex-wrap:wrap}
.navbtn{appearance:none;border:1px solid var(--border);background:rgba(12,22,38,.6);color:#e7efff;
 padding:10px 14px;border-radius:12px;font-weight:700;text-decoration:none;display:inline-flex;align-items:center;gap:8px}
.navbtn:hover{background:rgba(18,32,56,.8)}
.navbtn:focus-visible{outline:3px solid #60a5fa;outline-offset:2px}

/* Buttons: more professional look */
.btn, .btn.secondary, .btn.ghost{transition:transform .08s ease, box-shadow .2s ease}
.btn:hover{box-shadow:0 6px 18px rgba(59,130,246,.25)}
.btn.secondary:hover{box-shadow:0 6px 18px rgba(29,78,216,.25)}
.btn:active{transform:translateY(1px)}

/* Cards lighten slightly */
.card{box-shadow:0 12px 40px rgba(0,0,0,.35)}

/* Chart areas */
.chart-wrap{margin-top:10px}
.chart-grid{display:grid;grid-template-columns:1fr;gap:14px}
.canvas-card{background:rgba(6,14,24,.8);border:1px solid var(--border);border-radius:14px;padding:12px}

/* New line chart legend */
.legend{display:flex;gap:10px;flex-wrap:wrap}
.legend .key{display:inline-flex;align-items:center;gap:6px;color:#cfe1ff;font-size:.92rem}
.legend .swatch{width:14px;height:4px;border-radius:2px;background:#60a5fa}
.legend .swatch.alt{background:#1d4ed8}

/* Focus styles for inputs */
.input input:focus, .input select:focus{box-shadow:0 0 0 3px var(--ring);border-color:#3b82f6}

/* Logo sizing for mobile */
@media (max-width:720px){
  .site-header{gap:10px;flex-wrap:wrap}
  .site-header nav{overflow-x:auto; scrollbar-width:none}
  .site-header nav::-webkit-scrollbar{display:none}
}

/* --- v4 professional polish --- */
html,body{background:
 radial-gradient(1200px 600px at 10% -10%, rgba(37,99,235,.20) 0%, rgba(37,99,235,0) 32%),
 radial-gradient(900px 500px at 110% 10%, rgba(21,94,239,.18) 0%, rgba(21,94,239,0) 35%),
 linear-gradient(180deg,#0B1E34,#06121E);}
.card{background:rgba(255,255,255,0.03);backdrop-filter:saturate(120%) blur(6px)}
.input input{background:rgba(255,255,255,0.06)}
.kpi .value{font-size:1.35rem}
.chart-grid{display:grid;grid-template-columns:1fr;gap:12px}
.canvas-card canvas{width:100%;height:auto;display:block}
.table-scroll{max-height:340px}
.container{max-width:1100px;padding:20px}
.site-header{backdrop-filter:blur(12px)}
.brand span{font-weight:900;letter-spacing:.2px}
.small{color:#cfe1ff}
/* Ensure everything fits on small screens */
@media (max-width: 740px){
  .container{padding:14px}
  .card{padding:14px}
  .kpi .value{font-size:1.2rem}
  .table-scroll{max-height:280px}
}


/* --- v5 chart sizing & spacing --- */
.chart-grid{gap:10px}
.canvas-card{padding:10px}
.canvas-card canvas{max-height:180px}
@media (max-width: 740px){
  .canvas-card canvas{max-height:150px}
}


/* --- v7 high‑end UI --- */
:root{
  --radius: 16px;
}
body{letter-spacing:.1px}
.container{max-width:980px}
.card{border-radius:var(--radius);border:1px solid rgba(255,255,255,.08);box-shadow:0 10px 30px rgba(0,0,0,.35)}
.input{gap:14px;margin-bottom:14px}
.input label{opacity:.95;margin-bottom:4px;display:block}
.input input{border-radius:12px}
.btn{border-radius:12px; font-weight:800}
.kpi{gap:14px}
.kpi .tile{border-radius:14px}
.site-header{border-bottom:1px solid rgba(255,255,255,.08)}
.brand span{font-size:1.05rem}
table{border-collapse:collapse}
th,td{padding:10px 10px}
caption{padding:6px 0; opacity:.85}
/* tighter mobile spacing */
@media (max-width:740px){
  .container{padding:12px}
  .card{padding:14px}
  .btn{width:100%}
}