:root {
  --bg: #0b1016;
  --bg-soft: #111824;
  --surface: #151e2b;
  --surface-2: #182234;
  --line: rgba(255, 255, 255, 0.08);
  --text: #ecf2f8;
  --muted: #97a6b9;
  --accent: #6fe3c2;
  --accent-2: #7ca8ff;
  --warn: #ffcf6b;
  --error: #ff8c8c;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
  --radius: 20px;
  --radius-sm: 14px;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top left, rgba(111, 227, 194, 0.12), transparent 36%),
    radial-gradient(circle at top right, rgba(124, 168, 255, 0.12), transparent 34%),
    linear-gradient(180deg, #080c12 0%, #0b1016 100%);
  color: var(--text);
  font-family: var(--sans);
}
body { line-height: 1.45; }
a { color: inherit; text-decoration: none; }
code { font-family: var(--mono); font-size: 0.96em; }

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 1rem 1.4rem;
  backdrop-filter: blur(22px);
  background: rgba(8, 12, 18, 0.74);
  border-bottom: 1px solid var(--line);
}
.brand-lockup { display: flex; align-items: center; gap: 0.85rem; min-width: 0; }
.brand-mark {
  width: 2.8rem; height: 2.8rem; display: grid; place-items: center;
  border-radius: 0.9rem;
  background: linear-gradient(135deg, rgba(111, 227, 194, 0.95), rgba(124, 168, 255, 0.95));
  color: #061018;
  font-family: var(--mono); font-weight: 700; letter-spacing: 0.08em;
}
.brand-name { font-size: 1.03rem; font-weight: 700; letter-spacing: -0.02em; }
.brand-subtitle, .muted, .note, .plot-meta, .file-name { color: var(--muted); }
.brand-subtitle { font-size: 0.86rem; }
.tabs { display: flex; align-items: center; gap: 0.35rem; flex-wrap: wrap; }
.tabs a {
  padding: 0.62rem 0.9rem; border-radius: 999px; color: var(--muted);
  transition: background 0.18s ease, color 0.18s ease, transform 0.18s ease;
}
.tabs a:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.tabs a.active {
  background: rgba(111, 227, 194, 0.12); color: var(--text);
  border: 1px solid rgba(111, 227, 194, 0.25);
}

.app-shell {
  display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 1rem; padding: 1rem;
}
.rail, .workspace { display: flex; flex-direction: column; gap: 1rem; min-width: 0; }
.panel, .hero-panel, .landing-visual, .info-block, .doc-block, .doc-hero {
  background: linear-gradient(180deg, rgba(24,34,52,0.92), rgba(17,24,36,0.95));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.panel, .doc-block { padding: 1rem; }
.rail-block, .doc-hero { padding: 1.2rem 1rem; }

.hero-panel {
  display: grid; grid-template-columns: 1.25fr 1fr; gap: 1.4rem; align-items: center; padding: 1.4rem;
}
.hero-copy h1, .landing-copy h1, .doc-hero h1 {
  margin: 0.25rem 0 0.8rem; line-height: 1.02; letter-spacing: -0.04em;
}
.hero-copy h1 { font-size: clamp(2rem, 3vw, 3.5rem); }
.landing-copy h1, .doc-hero h1 { font-size: clamp(2.1rem, 5vw, 4.4rem); }
.hero-copy p, .landing-copy p, .doc-hero p {
  margin: 0; max-width: 62ch; color: var(--muted); font-size: 1rem;
}
.hero-visual {
  display: flex; align-items: center; justify-content: flex-end; gap: 0.55rem; flex-wrap: wrap;
}
.signal-card {
  min-width: 120px; padding: 0.95rem 1rem; border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.08); background: rgba(255,255,255,0.03);
}
.signal-card.accent {
  background: linear-gradient(135deg, rgba(111,227,194,0.18), rgba(124,168,255,0.16));
  border-color: rgba(111,227,194,0.22);
}
.signal-label, .eyebrow {
  text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.72rem; color: #8fb2c9;
}
.signal-value { margin-top: 0.35rem; font-weight: 700; }
.signal-arrow { font-size: 1.6rem; color: var(--accent); }
.section-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 0.8rem;
}
.section-head h2, .section-head h3, .rail-block h2, .doc-block h2, .info-block h2 {
  margin: 0.2rem 0 0; letter-spacing: -0.03em;
}
.summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.85rem; }
.metric-card {
  padding: 1rem; border-radius: 18px;
  background: linear-gradient(180deg, rgba(21,30,43,0.92), rgba(17,24,36,0.9));
  border: 1px solid var(--line); min-height: 120px;
}
.metric-card .label {
  color: var(--muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.12em;
}
.metric-card .value {
  margin-top: 0.5rem; font-size: 1.35rem; font-weight: 800; letter-spacing: -0.03em;
}
.metric-card .detail { margin-top: 0.45rem; color: var(--muted); font-size: 0.88rem; }
.plot-panel { padding-bottom: 1.15rem; }
.plot-canvas { width: 100%; min-height: 420px; }
.supported-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.85rem; }
.support-card {
  padding: 0.95rem; border-radius: 16px; border: 1px solid var(--line); background: rgba(255,255,255,0.025);
}
.support-card h3 { margin: 0 0 0.35rem; font-size: 1rem; }
.chips { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip {
  padding: 0.35rem 0.55rem; border-radius: 999px; background: rgba(255,255,255,0.05);
  color: var(--text); border: 1px solid rgba(255,255,255,0.06); font-size: 0.84rem;
}
label {
  display: block; margin: 0.8rem 0 0.35rem; font-size: 0.88rem; color: #c6d5e3;
}
select, input[type="text"], input[type="number"], textarea {
  width: 100%; padding: 0.78rem 0.92rem; border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.08); background: rgba(8,12,18,0.8);
  color: var(--text); font: inherit;
}
textarea { min-height: 120px; resize: vertical; }
select:focus, input:focus, textarea:focus, button:focus {
  outline: 2px solid rgba(111,227,194,0.35); outline-offset: 2px;
}
button, .primary-link, .secondary-link {
  border: 0; border-radius: 14px; padding: 0.8rem 1rem; font: inherit; font-weight: 700; cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease, opacity 0.18s ease;
}
button:hover, .primary-link:hover, .secondary-link:hover { transform: translateY(-1px); }
button.primary, .primary-link {
  background: linear-gradient(135deg, rgba(111,227,194,0.95), rgba(124,168,255,0.92)); color: #071019;
}
button.secondary, .secondary-link, button.ghost {
  background: rgba(255,255,255,0.05); color: var(--text); border: 1px solid rgba(255,255,255,0.08);
}
button.ghost { width: auto; }
.row-actions, .inline-actions { display: flex; gap: 0.65rem; margin-top: 0.85rem; align-items: center; flex-wrap: wrap; }
.file-row { display: flex; align-items: center; gap: 0.7rem; margin-top: 0.25rem; }
.file-button { white-space: nowrap; }
.file-name { font-size: 0.9rem; }
.note { font-size: 0.88rem; margin: 0.8rem 0 0; }
.small-note p { margin: 0.45rem 0 0; }
.table-wrap {
  overflow: auto; border-radius: 16px; border: 1px solid rgba(255,255,255,0.06);
}
.data-table {
  width: 100%; border-collapse: collapse; min-width: 760px; background: rgba(8,12,18,0.45);
}
.data-table.compact { min-width: 820px; }
.data-table th, .data-table td {
  padding: 0.74rem 0.8rem; text-align: left; border-bottom: 1px solid rgba(255,255,255,0.06); vertical-align: middle;
}
.data-table th {
  color: #c9d8e6; background: rgba(255,255,255,0.03); position: sticky; top: 0; z-index: 1;
}
.data-table tbody tr:hover { background: rgba(255,255,255,0.03); }
.empty-state { text-align: center; color: var(--muted); padding: 1.2rem !important; }

.landing {
  width: min(1240px, calc(100% - 2rem)); margin: 0 auto; padding: 1rem 0 2rem;
}
.landing-hero {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 1rem; align-items: stretch; min-height: calc(100svh - 110px);
}
.landing-copy, .landing-visual, .info-block, .doc-block, .doc-hero { padding: 1.5rem; }
.landing-copy { display: flex; flex-direction: column; justify-content: center; }
.landing-actions { display: flex; gap: 0.75rem; margin-top: 1.35rem; flex-wrap: wrap; }
.intro-flow {
  display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 0.7rem; height: 100%; align-items: center;
}
.flow-step {
  min-height: 220px; display: flex; flex-direction: column; justify-content: center;
  border-radius: 18px; border: 1px solid rgba(255,255,255,0.08); padding: 1rem; background: rgba(255,255,255,0.03);
}
.flow-step.accent { background: linear-gradient(135deg, rgba(111,227,194,0.14), rgba(124,168,255,0.16)); }
.flow-step span {
  display: inline-grid; place-items: center; width: 2rem; height: 2rem; border-radius: 999px;
  background: rgba(255,255,255,0.08); margin-bottom: 0.75rem; font-family: var(--mono);
}
.flow-step strong { font-size: 1.05rem; margin-bottom: 0.5rem; }
.flow-step p { margin: 0; color: var(--muted); }
.flow-arrow { font-size: 1.6rem; color: var(--accent); }
.info-columns { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }
.info-block h2 { margin: 0 0 0.65rem; }
.info-block p { margin: 0; color: var(--muted); }

.doc-layout {
  width: min(1200px, calc(100% - 2rem)); margin: 0 auto; padding: 1rem 0 2rem;
}
.doc-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1rem; }
.doc-block.full { grid-column: 1 / -1; }
.doc-block.highlight { background: linear-gradient(135deg, rgba(111,227,194,0.12), rgba(124,168,255,0.12)); }
.doc-block ul, .doc-block ol { margin: 0.75rem 0 0 1.2rem; padding: 0; color: var(--muted); }
.doc-block li + li { margin-top: 0.3rem; }
.ref-list { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.mini-summary { display: grid; gap: 0.55rem; }
.mini-summary .summary-row {
  display: flex; justify-content: space-between; gap: 0.8rem; padding: 0.72rem 0.85rem;
  border-radius: 14px; background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
}
.mini-summary .summary-row strong { color: var(--text); }
.text-link { color: var(--accent); }

@media (max-width: 1100px) {
  .app-shell, .hero-panel, .landing-hero, .info-columns, .doc-grid { grid-template-columns: 1fr; }
  .summary-grid, .supported-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .topbar { position: static; flex-direction: column; align-items: flex-start; }
  .app-shell { padding: 0.75rem; }
  .summary-grid, .supported-grid { grid-template-columns: 1fr; }
  .landing { width: calc(100% - 1rem); }
  .landing-hero { min-height: auto; }
  .intro-flow { grid-template-columns: 1fr; }
  .flow-arrow { display: none; }
}