:root {
    --bg: #090c12;
    --bg-2: #0d1119;
    --surface: #141a24;
    --surface-2: #1a212e;
    --surface-3: #212a3a;
    --line: rgba(255,255,255,0.07);
    --line-2: rgba(255,255,255,0.11);
    --ink: #eef1f6;
    --ink-2: #c3cad6;
    --muted: #8b93a3;
    --accent: #4b8ef0;
    --accent-2: #38bdf8;
    --good: #22c55e;
    --bad: #f87171;
    --shadow: 0 6px 24px rgba(0,0,0,0.35);
    --radius: 16px;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(1100px 550px at 8% -8%, rgba(75,142,240,0.13), transparent 58%),
        radial-gradient(950px 480px at 102% 4%, rgba(56,189,248,0.10), transparent 55%),
        radial-gradient(800px 500px at 50% 120%, rgba(201,133,0,0.06), transparent 60%),
        var(--bg);
    -webkit-font-smoothing: antialiased;
}
.app { display: flex; min-height: 100vh; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 8px; border: 2px solid transparent; background-clip: content-box; }
::-webkit-scrollbar-thumb:hover { background: #2f3a4d; background-clip: content-box; }

/* ---------- Sidebar ---------- */
.sidebar {
    width: 306px; flex-shrink: 0; padding: 20px 18px 44px;
    background: linear-gradient(180deg, rgba(13,17,25,0.9), rgba(9,12,18,0.9));
    border-right: 1px solid var(--line);
    backdrop-filter: blur(8px);
}
.brand {
    font-size: 18px; font-weight: 800; margin-bottom: 20px; letter-spacing: -0.3px;
    display: flex; align-items: center; gap: 9px;
    background: linear-gradient(90deg, #fff, var(--accent-2));
    -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.step { margin-bottom: 22px; }
.step-h { font-size: 13.5px; font-weight: 700; margin-bottom: 11px; display: flex; align-items: center; gap: 9px; color: var(--ink); }
.step-h .n {
    display: inline-grid; place-items: center; width: 21px; height: 21px; border-radius: 7px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; font-size: 11.5px; font-weight: 800;
    box-shadow: 0 2px 8px rgba(75,142,240,0.4);
}
.lbl { display: block; font-size: 11.5px; color: var(--muted); margin: 12px 0 5px; font-weight: 600; letter-spacing: .2px; }

select, .filebtn, input[type=range] { width: 100%; }
select {
    background: var(--surface-2); color: var(--ink); border: 1px solid var(--line);
    border-radius: 10px; padding: 9px 11px; font-size: 13px; outline: none; transition: border-color .15s, box-shadow .15s;
}
select:hover { border-color: var(--line-2); }
select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(75,142,240,0.15); }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.two.hidden { display: none; }

.filebtn {
    display: block; text-align: center; padding: 22px 12px; border: 1.5px dashed var(--line-2);
    border-radius: 13px; cursor: pointer; color: var(--muted); font-size: 13px; font-weight: 500;
    background: var(--surface-2); transition: border-color .15s, color .15s, background .15s;
}
.filebtn:hover { border-color: var(--accent); color: var(--ink); background: var(--surface-3); }

.pill { margin-top: 10px; padding: 9px 12px; border-radius: 10px; font-size: 12.5px; font-weight: 500;
        background: rgba(34,197,94,0.10); border: 1px solid rgba(34,197,94,0.30); color: #86efac; }

.radios { display: flex; gap: 14px; font-size: 13px; margin-bottom: 10px; }
.radios label { display: flex; align-items: center; gap: 5px; cursor: pointer; }
input[type=radio], input[type=checkbox] { accent-color: var(--accent); }

.paramlist { display: flex; flex-direction: column; gap: 8px; max-height: 340px; overflow-y: auto; padding-right: 3px; }
.param {
    background: var(--surface-2); border: 1px solid var(--line); border-left: 3px solid var(--c);
    border-radius: 11px; padding: 10px 12px; transition: background .12s, transform .12s;
}
.param:hover { background: var(--surface-3); }
.param .top { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; }
.param .top input { accent-color: var(--c); }
.param .axis { display: flex; gap: 12px; margin-top: 8px; font-size: 11.5px; color: var(--muted); }
.param .axis label { display: flex; align-items: center; gap: 4px; cursor: pointer; }
.param.off { opacity: .5; }
.param.off .axis { display: none; }

input[type=range] { accent-color: var(--accent); margin-top: 4px; }
.chk { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--ink-2); margin-top: 12px; cursor: pointer; }

.tsconfirm { font-size: 12.5px; color: var(--ink-2); margin-bottom: 9px; padding: 8px 11px;
    background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px; }
.tsdetails { border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); }
.tsdetails > summary { cursor: pointer; padding: 8px 11px; font-size: 12.5px; color: var(--ink-2);
    list-style: none; user-select: none; }
.tsdetails > summary::-webkit-details-marker { display: none; }
.tsdetails > summary::before { content: "▸ "; color: var(--muted); }
.tsdetails[open] > summary::before { content: "▾ "; }
.tsdetails[open] > summary { border-bottom: 1px solid var(--line); margin-bottom: 8px; }
.tsdetails > *:not(summary) { margin: 8px 11px; }

/* ---------- Main ---------- */
.main { flex: 1; padding: 24px 30px 64px; min-width: 0; }
.hero {
    position: relative; overflow: hidden;
    padding: 26px 30px; border-radius: 20px; margin-bottom: 20px;
    background: linear-gradient(120deg, rgba(75,142,240,0.18), rgba(56,189,248,0.10) 55%, rgba(201,133,0,0.10));
    border: 1px solid var(--line-2); box-shadow: var(--shadow);
}
.hero::after { content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px;
    background: radial-gradient(circle, rgba(56,189,248,0.22), transparent 70%); }
.hero h1 { margin: 0; font-size: 27px; letter-spacing: -0.6px; font-weight: 800; }
.hero p { margin: 8px 0 0; color: var(--ink-2); font-size: 14px; max-width: 760px; }

.empty-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 10px; }
.empty-grid > div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.empty-grid h3 { margin: 0 0 6px; font-size: 15px; }
.empty-grid p { margin: 0; color: var(--muted); font-size: 13px; }

.sec { font-size: 15px; font-weight: 700; margin: 16px 0 12px; letter-spacing: .2px;
    text-transform: uppercase; color: var(--ink-2); }
.sec::before { content: ""; display: inline-block; width: 3px; height: 13px; margin-right: 9px;
    vertical-align: -1px; border-radius: 2px; background: linear-gradient(var(--accent), var(--accent-2)); }

/* ---------- KPI ---------- */
.kpi-grid { display: flex; gap: 14px; flex-wrap: wrap; }
.kpi {
    flex: 1 1 220px; position: relative; overflow: hidden;
    background: linear-gradient(160deg, var(--surface), var(--bg-2));
    border: 1px solid var(--line); border-radius: var(--radius); padding: 15px 17px;
    box-shadow: var(--shadow); transition: transform .14s, border-color .14s;
}
.kpi::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
    background: linear-gradient(var(--c), transparent); }
.kpi:hover { transform: translateY(-3px); border-color: var(--line-2); }
.kpi-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.kpi-info { min-width: 0; }
.kpi .name { color: var(--muted); font-size: 11.5px; font-weight: 700; text-transform: uppercase;
    letter-spacing: .5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 150px; }
.kpi .value { font-size: 25px; font-weight: 800; margin-top: 4px; font-variant-numeric: tabular-nums; letter-spacing: -0.5px; }
.kpi .spark { width: 132px; height: 38px; flex-shrink: 0; opacity: .95; }
.kpi .sub { color: var(--muted); font-size: 12px; margin-top: 10px; font-variant-numeric: tabular-nums; }
.kpi .sub .dot { opacity: .4; margin: 0 2px; }
.up { color: var(--good); font-weight: 700; } .down { color: var(--bad); font-weight: 700; }

/* ---------- Pill tabs ---------- */
.tabs { display: flex; gap: 6px; margin: 22px 0 16px; padding: 5px;
    background: var(--surface); border: 1px solid var(--line); border-radius: 13px; width: fit-content; max-width: 100%;
    overflow-x: auto; }
.tab { background: none; border: none; color: var(--muted); font-size: 13.5px; font-weight: 600;
    padding: 8px 15px; cursor: pointer; border-radius: 9px; white-space: nowrap; transition: color .15s, background .15s; }
.tab:hover { color: var(--ink); }
.tab.active { color: #fff; background: linear-gradient(135deg, var(--accent), var(--accent-2));
    box-shadow: 0 4px 14px rgba(75,142,240,0.35); }

.chart { width: 100%; height: 620px; background: var(--surface);
    border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.row { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; gap: 12px; }
.meta { color: var(--muted); font-size: 12.5px; }
.btn { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; border: none; border-radius: 10px;
    padding: 9px 17px; font-size: 13px; font-weight: 600; cursor: pointer; transition: filter .15s, transform .1s; }
.btn:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn.ghost { background: var(--surface-2); border: 1px solid var(--line-2); color: var(--ink); }

.ctrls { display: flex; gap: 18px; flex-wrap: wrap; align-items: flex-start; margin-bottom: 16px; }
.ctrls > div { min-width: 200px; }
.ctrls select { max-width: 380px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; max-width: 660px; }
.chip { display: flex; align-items: center; gap: 6px; font-size: 12.5px; padding: 7px 12px;
    background: var(--surface-2); border: 1px solid var(--line); border-radius: 20px; cursor: pointer; user-select: none;
    transition: border-color .12s, background .12s; }
.chip:hover { border-color: var(--line-2); }
.chip.on { border-color: var(--accent); background: rgba(75,142,240,0.14); color: #fff; }

.tablewrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { padding: 10px 13px; text-align: right; border-bottom: 1px solid var(--line);
    font-variant-numeric: tabular-nums; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
thead th { color: var(--muted); font-weight: 600; position: sticky; top: 0; background: var(--surface-2); font-size: 12px;
    text-transform: uppercase; letter-spacing: .3px; }
tbody tr { transition: background .1s; }
tbody tr:hover { background: rgba(255,255,255,0.035); }

.err { margin-top: 16px; padding: 13px 17px; border-radius: 12px;
    background: rgba(248,113,113,0.12); border: 1px solid rgba(248,113,113,0.4); color: #fca5a5; font-size: 13px; }

.hidden { display: none !important; }

@media (max-width: 900px) {
    .app { flex-direction: column; }
    .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--line); }
    .empty-grid { grid-template-columns: 1fr; }
    .kpi .spark { display: none; }
}