:root {
  --bg:#f2f5f8; --panel:#fff; --panel2:#f7f9fc; --ink:#172033; --muted:#667085;
  --line:#dfe5ec; --navy:#0b2d67; --blue:#145fd7; --teal:#20c7af;
  --shadow:0 12px 34px rgba(22,39,67,.10); --radius:14px; --danger:#b42318;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
body.dark{--bg:#171a22;--panel:#20242e;--panel2:#292e3a;--ink:#eef3fb;--muted:#aab3c2;--line:#394151;--navy:#c8d9ff;--shadow:0 12px 34px rgba(0,0,0,.28)}
button,input,select,textarea{font:inherit}
a{color:var(--blue)}
.brand-header{background:var(--panel);min-height:132px;display:flex;align-items:center;padding:0 26px;border-bottom:1px solid var(--line);position:relative;gap:18px}
.brand-header img{height:118px;width:auto;max-width:70%;object-fit:contain}
.header-actions{margin-left:auto;display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}
.connection-badge{font-size:11px;font-weight:750;padding:6px 9px;border-radius:999px;background:var(--panel2);border:1px solid var(--line);color:var(--muted);white-space:nowrap}
.connection-badge.ready{background:#e8f8f5;border-color:#b9ebe2;color:#174b43}.dark .connection-badge.ready{background:#143a36;border-color:#27534e;color:#d6fbf4}
.connection-badge.offline{background:#fff4df;border-color:#f3d9a6;color:#7b5313}.dark .connection-badge.offline{background:#493919;border-color:#6f5929;color:#ffe3a3}
.privacy-strip{display:flex;gap:10px;align-items:center;padding:10px 28px;background:#e8f8f5;border-bottom:1px solid #b9ebe2;color:#174b43;font-size:13px}
.dark .privacy-strip{background:#143a36;border-color:#27534e;color:#d6fbf4}.privacy-icon{color:var(--teal)}
.workspace{max-width:1650px;margin:0 auto;display:grid;grid-template-columns:300px minmax(0,1fr);gap:18px;padding:18px}
.sidebar{display:flex;flex-direction:column;gap:14px}
.panel,.content-panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.panel{padding:18px}.panel h2{font-size:15px;margin:0 0 14px}.panel label,.config-card label{display:block;font-size:12px;font-weight:650;color:var(--muted);margin:10px 0}
.panel input,.panel select,.config-card input,.config-card select,.config-card textarea{display:block;width:100%;margin-top:5px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:8px;padding:9px 10px;outline:none}
.panel input:focus,.panel select:focus,.config-card input:focus,.config-card select:focus,.config-card textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(20,95,215,.12)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.primary-button,.secondary-button,.ghost-button,.icon-button{border-radius:8px;padding:9px 12px;cursor:pointer;border:1px solid transparent;font-weight:650}
.primary-button{background:var(--blue);color:white}.primary-button:hover{filter:brightness(1.06)}
.secondary-button{background:#eaf1ff;color:#114da9;border-color:#bcd0f4}.dark .secondary-button{background:#223b66;color:#dce8ff;border-color:#3b5e94}
.ghost-button,.icon-button{background:var(--panel);color:var(--ink);border-color:var(--line)}.ghost-button:hover,.icon-button:hover{background:var(--panel2)}
.icon-button{min-width:38px}.small-button{padding:6px 8px;font-size:11px}
button:disabled{opacity:.48;cursor:not-allowed}.full{width:100%}.link-button{appearance:none;background:none;border:0;color:var(--blue);font-size:11px;padding:7px 0;cursor:pointer;text-decoration:underline}
.drop-hint{text-align:center;color:var(--muted);font-size:10px;margin:7px 0 0}.dataset-panel{transition:border-color .15s,box-shadow .15s,background .15s}.dataset-panel.dragging{border-color:var(--teal);box-shadow:0 0 0 4px rgba(32,199,175,.13);background:#f4fffc}.dark .dataset-panel.dragging{background:#1d302e}
.file-name{font-size:12px;color:var(--muted);margin:10px 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.stats-list{border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin:14px 0;padding:7px 0}.stats-list div{display:flex;justify-content:space-between;align-items:center;padding:7px 0;font-size:12px}.stats-list strong{font-size:14px}
.compact-panel{padding-bottom:12px}.export-button{padding:12px}.content-panel{min-height:730px;overflow:hidden}
.tabs{display:flex;gap:4px;padding:9px 14px 0;border-bottom:1px solid var(--line);background:var(--panel)}
.tab{appearance:none;background:transparent;border:0;border-bottom:3px solid transparent;color:var(--muted);padding:11px 16px;cursor:pointer;font-weight:700}.tab.active{color:var(--blue);border-bottom-color:var(--teal)}
.tab-page{display:none;padding:28px}.tab-page.active{display:block}
.empty-state{display:flex;min-height:650px;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:50px}.empty-state img{width:96px;height:96px}.empty-state h1{margin:18px 0 8px}.empty-state p{max-width:620px;color:var(--muted);line-height:1.6}.empty-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:center}.offline-note{margin-top:22px;max-width:540px;padding:10px 13px;border:1px solid var(--line);background:var(--panel2);border-radius:9px;color:var(--muted);font-size:11px;line-height:1.5}
.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}.section-heading h1{margin:0;font-size:26px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--teal);font-size:10px;font-weight:800;margin:0 0 5px}.status-pill{font-size:12px;padding:7px 10px;border-radius:999px;background:var(--panel2);color:var(--muted);border:1px solid var(--line)}
.narrative{margin-top:18px;background:var(--panel2);border-left:4px solid var(--teal);padding:18px 20px;border-radius:8px;line-height:1.7}.narrative p{margin:0 0 12px}.narrative p:last-child{margin-bottom:0}.subheading{font-size:17px;margin:26px 0 10px}
.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:9px}table{border-collapse:collapse;width:100%;font-size:12px}th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--panel2);position:sticky;top:0;z-index:1;color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em}tr:last-child td{border-bottom:0}
.plots-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(420px,1fr));gap:18px}.plot-card{border:1px solid var(--line);border-radius:12px;background:var(--panel2);overflow:hidden}.plot-card header{display:flex;gap:12px;justify-content:space-between;align-items:flex-start;padding:14px 15px;border-bottom:1px solid var(--line)}.plot-card h3{margin:0;font-size:14px}.plot-controls{display:flex;gap:8px;flex-wrap:wrap}.plot-controls label{font-size:10px;color:var(--muted);font-weight:700}.plot-controls select{display:block;margin-top:3px;border:1px solid var(--line);border-radius:6px;background:var(--panel);color:var(--ink);padding:5px 7px;font-size:11px}.plot-svg{background:var(--panel);overflow:auto}.plot-svg svg{display:block;width:100%;height:auto;min-width:520px}
.free-grid{display:grid;grid-template-columns:320px minmax(0,1fr);gap:20px}.theme-list{display:flex;flex-direction:column;gap:8px}.theme-item{display:flex;justify-content:space-between;gap:12px;padding:10px 12px;background:var(--panel2);border-radius:8px}.theme-item strong{font-size:12px}.theme-item span{font-weight:800;color:var(--blue)}
footer{text-align:center;color:var(--muted);font-size:11px;padding:8px 20px 24px}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
.busy-overlay{position:fixed;inset:0;background:rgba(10,20,35,.34);z-index:1000;display:flex;flex-direction:column;align-items:center;justify-content:center;color:white;font-weight:700;backdrop-filter:blur(2px)}.busy-overlay[hidden]{display:none}.spinner{width:46px;height:46px;border:4px solid rgba(255,255,255,.32);border-top-color:white;border-radius:50%;animation:spin .75s linear infinite;margin-bottom:12px}@keyframes spin{to{transform:rotate(360deg)}}
.toast{position:fixed;right:20px;bottom:20px;z-index:1200;max-width:min(420px,calc(100vw - 40px));background:#12233f;color:#fff;padding:11px 14px;border-radius:9px;box-shadow:0 14px 38px rgba(0,0,0,.28);font-size:12px}.toast[hidden]{display:none}
dialog{border:0;padding:0;background:transparent;color:var(--ink);max-width:none}dialog::backdrop{background:rgba(8,15,28,.55);backdrop-filter:blur(2px)}.dialog-card{background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 24px 70px rgba(0,0,0,.30);padding:22px}.designer-dialog{width:min(1450px,96vw)}.designer-card{max-height:92vh;display:flex;flex-direction:column}.config-dialog{width:min(720px,94vw)}.about-dialog{width:min(500px,92vw)}.dialog-header{display:flex;justify-content:space-between;gap:14px;align-items:flex-start}.dialog-header h2{margin:0}.dialog-close{border:0;background:transparent;color:var(--muted);font-size:26px;cursor:pointer;line-height:1}.muted{color:var(--muted);font-size:12px}.designer-toolbar{display:flex;justify-content:space-between;align-items:center;margin:10px 0}.designer-table-wrap{flex:1;min-height:300px;max-height:62vh}.designer-table tbody tr{cursor:pointer}.designer-table tbody tr.selected{background:rgba(32,199,175,.07)}.designer-table tbody tr.selected td:first-child{border-left:4px solid var(--teal);padding-left:6px}.designer-table tbody tr:not(.selected) td:first-child{border-left:4px solid transparent;padding-left:6px}.designer-table input[type=text],.designer-table select{width:100%;min-width:120px;border:1px solid var(--line);background:var(--panel);color:var(--ink);border-radius:6px;padding:6px}.designer-table .confidence{white-space:nowrap}.source-cell{max-width:330px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}.config-card textarea{min-height:112px;resize:vertical}.config-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.positive-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:7px;margin:8px 0 14px}.check-option{display:flex!important;align-items:center;gap:7px;background:var(--panel2);border:1px solid var(--line);border-radius:7px;padding:7px 8px!important;font-size:12px!important;color:var(--ink)!important;margin:0!important}.check-option input{width:auto!important;margin:0!important}.about-card{text-align:center;position:relative}.about-icon{width:86px}.about-card h2,.install-card h2{margin:10px 0 4px}.about-card p,.install-card p{line-height:1.5}.copyright{color:var(--muted);font-size:11px}.privacy-card{text-align:left;background:#e8f8f5;color:#174b43;border:1px solid #b9ebe2;border-radius:9px;padding:11px 12px;font-size:11px;line-height:1.55;margin:16px 0}.dark .privacy-card{background:#143a36;border-color:#27534e;color:#d6fbf4}.install-card{text-align:center;position:relative}.install-instructions{text-align:left;background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:12px 14px;margin:14px 0}.install-instructions ol{margin:0;padding-left:20px}.install-instructions li{margin:7px 0;line-height:1.45}
.error-banner{background:#fff1f0;color:#8b1e18;border:1px solid #f0b8b4;padding:12px;border-radius:8px;margin:12px 0}.dark .error-banner{background:#442522;color:#ffd6d1;border-color:#75403c}
@media(max-width:1100px){.brand-header{align-items:flex-start;padding-top:7px;padding-bottom:7px}.brand-header img{height:auto;width:min(680px,65%)}.header-actions{align-self:center}}
@media(max-width:980px){.workspace{grid-template-columns:1fr}.sidebar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}.export-button{grid-column:1/-1}.content-panel{min-height:600px}.free-grid{grid-template-columns:1fr}.plots-grid{grid-template-columns:1fr}.brand-header img{width:min(650px,70%)}}
@media(max-width:720px){.brand-header{flex-wrap:wrap}.brand-header img{max-width:100%;width:100%}.header-actions{width:100%;margin:0;justify-content:flex-end}.connection-badge{margin-right:auto}.privacy-strip{padding:9px 14px}.workspace{padding:10px}.sidebar{display:flex}.tab-page{padding:18px 14px}.tabs{overflow:auto}.plots-grid{grid-template-columns:1fr}.plot-card header{display:block}.plot-controls{margin-top:9px}.two-col,.config-grid{grid-template-columns:1fr}.designer-dialog{width:100vw}.dialog-card{border-radius:10px}.section-heading{align-items:flex-start}.empty-state{min-height:500px;padding:28px 18px}.plot-svg svg{min-width:470px}}