/* Base - CSS variables, themes, reset, nav rail, left panel, shell, topbar, KPI strip
   Extracted from the original single-file index.html - rules and order unchanged. */

:root{
  --bg:#f0f2f7;--surface:#fff;--card:#fff;--border:#e5e8ef;
  --accent:#4f8ef7;--green:#22c55e;--amber:#f59e0b;--red:#ef4444;--purple:#8b5cf6;
  --seg-s:#22c55e;--seg-o:#f59e0b;--seg-g:#4f8ef7;--seg-r:#ef4444;
  --text:#1a1f2e;--muted:#64748b;--dim:#94a3b8;
  --hdr-bg:#1a2035;--nav-bg:#1e2644;
  --font-mono:'SF Mono','Fira Code',monospace;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{height:100%;}body{height:100%;overflow:hidden;margin:0;padding:0;display:flex;flex-direction:column;}
body{font-family:'Inter','Segoe UI',system-ui,sans-serif;background:var(--bg);color:var(--text);display:flex;height:100vh;font-size:16px;}
/* LEFT RAIL */
.nav-rail{width:56px;background:var(--nav-bg);display:flex;flex-direction:column;align-items:center;padding:12px 0;gap:4px;flex-shrink:0;z-index:20;}
.nav-rail-logo{width:44px;height:44px;display:flex;align-items:center;justify-content:center;margin-bottom:10px;flex-shrink:0;border-radius:10px;overflow:hidden;}
.nav-icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:21px;cursor:pointer;transition:all .15s;color:rgba(255,255,255,.45);position:relative;}
.nav-icon:hover{background:rgba(255,255,255,.08);color:#fff;}
.nav-icon.active{background:rgba(79,142,247,.25);color:var(--accent);}
.nav-icon-tip{position:absolute;left:52px;background:#1a2035;color:#fff;font-size:13px;font-weight:600;padding:4px 8px;border-radius:5px;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s;z-index:100;border:1px solid rgba(255,255,255,.1);}
.nav-icon:hover .nav-icon-tip{opacity:1;}
.nav-sep{width:28px;height:1px;background:rgba(255,255,255,.1);margin:6px 0;}
.nav-bottom{margin-top:auto;}
/* LEFT PANEL */
.left-panel{width:220px;background:var(--nav-bg);border-right:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;flex-shrink:0;overflow-y:auto;overflow-x:hidden;position:relative;transition:width .22s cubic-bezier(.4,0,.2,1);}
.lp-header{padding:16px 14px 10px;border-bottom:1px solid rgba(255,255,255,.08);}
.lp-title{font-size:14px;font-weight:700;color:rgba(255,255,255,.7);}
.lp-group{display:flex;flex-direction:column;padding:8px 8px 0;}
.lp-group-label{font-size:12px;font-weight:700;letter-spacing:.1em;color:rgba(255,255,255,.3);text-transform:uppercase;padding:6px 8px 4px;}
.lp-item{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:7px;cursor:pointer;color:rgba(255,255,255,.55);font-size:14px;font-weight:500;transition:all .15s;margin-bottom:1px;}
.lp-item:hover{background:rgba(255,255,255,.07);color:#fff;}
.lp-item.active{background:rgba(79,142,247,.2);color:#fff;font-weight:600;}
.lp-item-dot{width:6px;height:6px;border-radius:50%;flex-shrink:0;}
/* PERIOD FILTER */
.lp-filter{padding:12px 14px;border-top:1px solid rgba(255,255,255,.06);margin-top:auto;}
.lp-filter-title{font-size:12px;font-weight:700;letter-spacing:.1em;color:rgba(255,255,255,.35);text-transform:uppercase;margin-bottom:8px;}
.period-row{display:flex;align-items:center;gap:5px;margin-bottom:6px;}
.period-badge{font-size:12px;font-weight:700;padding:2px 7px;border-radius:4px;flex-shrink:0;}
.period-a{background:#4f8ef7;color:#fff;}
.period-b{background:rgba(255,255,255,.12);color:rgba(255,255,255,.7);}
.period-input{flex:1;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);border-radius:5px;padding:3px 6px;font-size:13px;color:rgba(255,255,255,.8);cursor:pointer;}
.period-sep{font-size:13px;color:rgba(255,255,255,.3);}
.lp-takeaway{margin:10px 14px 14px;padding:10px;background:rgba(245,158,11,.08);border:1px solid rgba(245,158,11,.2);border-radius:7px;}
.lp-takeaway-ttl{font-size:12px;font-weight:700;color:#f59e0b;margin-bottom:5px;}
.lp-takeaway-txt{font-size:13px;color:rgba(255,255,255,.5);line-height:1.6;}
/* SHELL */
.shell{flex:1;display:flex;flex-direction:column;overflow:hidden;min-width:0;}
/* TOPBAR */
.topbar{background:var(--hdr-bg);padding:0 20px;display:flex;align-items:center;gap:12px;height:56px;flex-shrink:0;border-bottom:1px solid rgba(255,255,255,.06);}
.topbar-title{font-size:16px;font-weight:800;letter-spacing:.04em;color:#fff;}
.topbar-sub{font-size:13px;color:rgba(255,255,255,.4);}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:8px;}
.export-btn{display:flex;align-items:center;gap:5px;padding:5px 12px;border-radius:6px;border:1px solid rgba(79,142,247,.5);background:rgba(79,142,247,.15);color:#7ab3ff;font-size:14px;font-weight:700;cursor:pointer;transition:all .15s;}
.export-btn:hover{background:rgba(79,142,247,.25);}
/* THEME */
.theme-wrap{position:relative;}
.theme-trigger{display:flex;align-items:center;gap:5px;padding:4px 10px;border-radius:5px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.06);color:rgba(255,255,255,.6);font-size:14px;font-weight:600;cursor:pointer;}
.theme-swatch{width:11px;height:11px;border-radius:50%;flex-shrink:0;}
.theme-drop{display:none;position:fixed;background:#1a2035;border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:8px;z-index:999;width:230px;box-shadow:0 8px 28px rgba(0,0,0,.5);}
.theme-drop.open{display:block;}
.theme-drop-title{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:rgba(255,255,255,.3);margin-bottom:8px;}
.theme-grid2{display:grid;grid-template-columns:1fr 1fr;gap:5px;}
.theme-card{display:flex;align-items:center;gap:7px;padding:7px 9px;border-radius:6px;border:1.5px solid transparent;cursor:pointer;transition:all .15s;}
.theme-card:hover{border-color:rgba(255,255,255,.15);background:rgba(255,255,255,.05);}
.theme-card.active-theme{border-color:var(--accent);}
.theme-palette{display:flex;gap:2px;}
.theme-dot{width:9px;height:9px;border-radius:50%;}
.theme-name{font-size:13px;font-weight:600;color:rgba(255,255,255,.5);}
/* KPI STRIP */
.kpi-strip{
  background:linear-gradient(180deg,#1e2644 0%,#1a2035 100%);
  border-bottom:1px solid rgba(255,255,255,.08);
  display:flex;align-items:stretch;padding:0 20px;
  flex-shrink:0;overflow-x:auto;
  box-shadow:0 2px 12px rgba(0,0,0,.25);
}
.kpi-item{
  display:flex;flex-direction:column;justify-content:center;
  padding:14px 22px;border-right:1px solid rgba(255,255,255,.06);
  cursor:pointer;min-width:140px;position:relative;
  transition:background .15s;gap:2px;
}
.kpi-item:first-child{padding-left:0;}
.kpi-item:hover{background:rgba(255,255,255,.05);}
.kpi-item.sel{background:rgba(255,255,255,.06);}
.kpi-item.sel::after{
  content:'';position:absolute;bottom:0;left:0;right:0;
  height:3px;border-radius:3px 3px 0 0;
  background:var(--accent);
}
.kpi-item::before{
  content:'';position:absolute;top:0;left:0;right:0;
  height:2px;border-radius:0 0 2px 2px;
  background:transparent;transition:background .15s;
}
.kpi-item:nth-child(1)::before{background:rgba(79,142,247,.7);}
.kpi-item:nth-child(2)::before{background:rgba(34,197,94,.7);}
.kpi-item:nth-child(3)::before{background:rgba(245,158,11,.6);}
.kpi-item:nth-child(4)::before{background:rgba(139,92,246,.6);}
.kpi-item:nth-child(5)::before{background:rgba(79,142,247,.5);}
.kpi-item:nth-child(6)::before{background:rgba(34,197,94,.5);}
.kpi-item:nth-child(7)::before{background:rgba(245,158,11,.5);}
.kpi-item:nth-child(8)::before{background:rgba(248,113,113,.6);}
.kpi-lbl{
  font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:rgba(255,255,255,.4);margin-bottom:3px;white-space:nowrap;
}
.kpi-val{
  font-size:26px;font-weight:800;color:#fff;line-height:1.05;
  font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.kpi-unit{font-size:15px;color:rgba(255,255,255,.45);margin-left:3px;font-weight:600;}
.kpi-chg{font-size:13px;font-weight:600;margin-top:3px;display:flex;align-items:center;gap:3px;white-space:nowrap;}
.kpi-chg.up{color:#34d399;}.kpi-chg.dn{color:#f87171;}
/* CONTENT */
.content-area{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px;}
.tab-panel{display:none;flex-direction:column;gap:14px;}
.tab-panel.active{display:flex;}