/* ============================================================================
 *  Project   : localvm-research
 *  File      : web/public/style.css
 *  Purpose   : Light-theme styling for the research showcase platform (v2)
 *  Author    : Simon-Pierre Boucher
 *  Contact   : contact@spboucher.ai
 *  Created   : 2026-08-12
 *  Modified  : 2026-08-12
 *  Platform  : Web (deployed from macOS / Apple Silicon)
 *  License   : All rights reserved (research code)
 * ==========================================================================*/

:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --accent-dark: #1c5cab;
  --accent-wash: #edf3fb;
  --good: #0ca30c;
  --good-text: #006300;
  --radius: 12px;
  --shadow-1: 0 1px 2px rgba(11,11,11,0.04), 0 1px 3px rgba(11,11,11,0.05);
  --shadow-2: 0 4px 14px rgba(11,11,11,0.07), 0 2px 4px rgba(11,11,11,0.05);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--page);
  color: var(--ink);
  line-height: 1.65;
  font-size: 16px;
}
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre, .mono-small { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
::selection { background: #cde2fb; }

/* ---------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 40;
  background: rgba(252, 252, 251, 0.85);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--grid);
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 16px; }
.brand {
  font-weight: 750; font-size: 18.5px; color: var(--ink); letter-spacing: -0.02em;
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.brand-logo { display: block; border-radius: 7px; }
.brand-dim { color: var(--muted); font-weight: 500; }
.site-nav { display: flex; gap: 2px; flex-wrap: wrap; }
.site-nav a {
  padding: 7px 13px; border-radius: 8px; color: var(--ink-2);
  font-size: 14px; font-weight: 550;
  transition: background 0.15s, color 0.15s;
}
.site-nav a:hover { background: var(--accent-wash); text-decoration: none; color: var(--accent-dark); }
.site-nav a.active { color: var(--accent-dark); background: var(--accent-wash); font-weight: 650; }
.nav-toggle { display: none; }

/* ---------------------------------------------------------------- hero */
.hero {
  padding: 72px 0 16px;
  background:
    radial-gradient(1000px 380px at 15% -20%, rgba(42,120,214,0.10), transparent 65%),
    radial-gradient(800px 300px at 90% -30%, rgba(27,175,122,0.07), transparent 60%);
  margin: 0 -24px; padding-left: 24px; padding-right: 24px;
}
.kicker {
  text-transform: uppercase; letter-spacing: 0.1em; font-size: 12px; font-weight: 700;
  color: var(--accent-dark); margin: 0 0 14px;
  display: inline-flex; align-items: center; gap: 8px;
}
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--accent); border-radius: 2px; }
.hero h1 { font-size: 46px; line-height: 1.08; letter-spacing: -0.028em; margin: 0 0 18px; font-weight: 780; }
.lede { font-size: 18.5px; color: var(--ink-2); max-width: 780px; margin: 0 0 14px; }
.lede-small { color: var(--ink-2); max-width: 780px; }
.lede-eq code {
  font-size: 13px; background: var(--surface); border: 1px solid var(--grid);
  border-radius: 8px; padding: 8px 14px; color: var(--ink-2); display: inline-block;
  box-shadow: var(--shadow-1);
}

/* ---------------------------------------------------------------- tiles */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin: 36px 0; }
.tile {
  background: var(--surface); border: 1px solid var(--grid); border-radius: var(--radius);
  padding: 22px 24px; display: flex; flex-direction: column; gap: 2px;
  box-shadow: var(--shadow-1); position: relative; overflow: hidden;
}
.tile::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: linear-gradient(180deg, var(--accent), #6da7ec);
}
.tile-value { font-size: 36px; font-weight: 760; letter-spacing: -0.025em; line-height: 1.1; }
.tile-denom { font-size: 20px; color: var(--muted); font-weight: 500; }
.tile-label { color: var(--ink-2); font-size: 13.5px; margin-top: 4px; }

/* ---------------------------------------------------------------- cards */
.split { display: grid; grid-template-columns: 3fr 2fr; gap: 20px; margin: 8px 0 20px; }
.card {
  background: var(--surface); border: 1px solid var(--grid); border-radius: var(--radius);
  padding: 26px 28px; margin-bottom: 20px; box-shadow: var(--shadow-1);
}
.card h2 { margin-top: 0; font-size: 20px; letter-spacing: -0.015em; font-weight: 700; }
.more { font-weight: 650; font-size: 14px; }
.card-head-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; background: var(--accent); color: #fff; border: 0;
  padding: 10px 20px; border-radius: 9px; font-size: 14.5px; font-weight: 650;
  cursor: pointer; transition: background 0.15s, transform 0.1s; font-family: inherit;
}
.btn:hover { background: var(--accent-dark); }
.btn:active { transform: translateY(1px); }

/* ---------------------------------------------------------------- phases */
.phases { list-style: none; margin: 0; padding: 0; }
.phase { display: flex; align-items: flex-start; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--grid); }
.phase:last-child { border-bottom: 0; }
.phase strong { display: block; font-size: 14.5px; }
.phase-detail { font-size: 13px; color: var(--muted); }
.phase-dot { width: 10px; height: 10px; border-radius: 50%; margin-top: 7px; flex: 0 0 auto; background: var(--baseline); }
.phase.done .phase-dot { background: var(--good); box-shadow: 0 0 0 3px rgba(12,163,12,0.14); }
.phase.in-progress .phase-dot { background: var(--accent); box-shadow: 0 0 0 3px rgba(42,120,214,0.16); }
.phase .badge { margin-left: auto; }
.badge {
  font-size: 11.5px; font-weight: 650; padding: 3px 10px; border-radius: 20px;
  white-space: nowrap; align-self: center; border: 1px solid var(--grid); color: var(--ink-2);
}
.badge-done { color: var(--good-text); background: #eef7ee; border-color: #cfe8cf; }
.badge-in-progress, .badge-has-results { color: var(--accent-dark); background: var(--accent-wash); border-color: #cfe0f5; }
.badge-pending, .badge-scaffolded { color: var(--muted); background: var(--page); }

/* ---------------------------------------------------------------- doc cards */
.page-title { font-size: 32px; letter-spacing: -0.025em; margin: 44px 0 10px; font-weight: 760; }
.section-title { font-size: 20px; margin: 34px 0 10px; font-weight: 700; }
.doc-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 16px; margin: 18px 0; }
.doc-card {
  background: var(--surface); border: 1px solid var(--grid); border-radius: var(--radius);
  padding: 20px 22px; color: var(--ink); display: block; box-shadow: var(--shadow-1);
  transition: box-shadow 0.18s, transform 0.18s, border-color 0.18s;
}
.doc-card:hover { border-color: #b9d2f0; text-decoration: none; box-shadow: var(--shadow-2); transform: translateY(-2px); }
.doc-card.disabled { opacity: 0.55; pointer-events: none; }
.doc-card h3 { margin: 0 0 6px; font-size: 16px; font-weight: 680; }
.doc-card p { margin: 0 0 10px; font-size: 13.5px; color: var(--ink-2); }
.runs { font-size: 12px; color: var(--muted); margin-left: 8px; }
.note-line { color: var(--ink-2); font-size: 14px; }

/* ---------------------------------------------------------------- doc view */
.doc { max-width: 860px; margin: 32px auto; }
.crumb { font-size: 13px; color: var(--muted); margin: 26px 0 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 18px; }
.chip {
  font-size: 12px; background: var(--surface); border: 1px solid var(--grid);
  border-radius: 20px; padding: 3px 12px; color: var(--ink-2);
}
.chip-k { color: var(--muted); margin-right: 6px; text-transform: uppercase; font-size: 10px; letter-spacing: 0.05em; }
.doc-head { margin: 30px 0 6px; }
.doc-head-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.doc-head h1 { font-size: 32px; letter-spacing: -0.025em; margin: 0; font-weight: 760; }
.doc-head h1::first-letter { text-transform: uppercase; }
.doc-head-meta { color: var(--muted); font-size: 13px; margin: 6px 0 0; font-family: ui-monospace, Menlo, monospace; }
.doc-layout { display: block; margin-top: 18px; }
.doc-layout.has-toc { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 36px; align-items: start; }
.doc-layout .doc { margin: 0; max-width: 820px; }
.toc {
  position: sticky; top: 80px; background: var(--surface); border: 1px solid var(--grid);
  border-radius: var(--radius); padding: 16px 18px; max-height: calc(100vh - 104px);
  overflow-y: auto; box-shadow: var(--shadow-1);
}
.toc-title { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 700; }
.toc ul { list-style: none; margin: 10px 0 0; padding: 0; }
.toc li { padding: 3px 0; line-height: 1.35; }
.toc li a { color: var(--ink-2); font-size: 13px; display: block; border-left: 2px solid transparent; padding-left: 8px; margin-left: -8px; }
.toc li a:hover { color: var(--accent-dark); text-decoration: none; border-left-color: var(--accent); }
.toc-d3 { padding-left: 14px !important; }
.toc-d3 a { font-size: 12.5px !important; color: var(--muted) !important; }
.hanchor { opacity: 0; margin-left: 8px; font-weight: 400; color: var(--muted); font-size: 0.85em; }
h2:hover .hanchor, h3:hover .hanchor, h4:hover .hanchor { opacity: 1; text-decoration: none; }

/* markdown body */
.md { overflow-wrap: break-word; }
.md h1 { font-size: 28px; letter-spacing: -0.02em; }
.md h2 { font-size: 21px; margin-top: 38px; border-bottom: 1px solid var(--grid); padding-bottom: 7px; letter-spacing: -0.01em; }
.md h3 { font-size: 17px; margin-top: 28px; }
.md code { background: #f1f0ec; border-radius: 5px; padding: 1px 6px; font-size: 0.88em; }
.md pre code, .codeblock code { background: none; padding: 0; font-size: 13px; }
.codeblock, .md pre {
  background: #f6f5f2; border: 1px solid var(--grid); border-radius: 10px;
  padding: 15px 18px; overflow-x: auto; line-height: 1.55;
}
.md table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.md th, .md td { border: 1px solid var(--grid); padding: 7px 11px; text-align: left; vertical-align: top; }
.md th { background: var(--page); }
.md blockquote { border-left: 3px solid var(--accent); margin-left: 0; padding-left: 16px; color: var(--ink-2); }

/* ---------------------------------------------------------------- log */
.log-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 20px; }
.log-entry h3 { font-size: 15px; margin: 2px 0 8px; }
.timeline { margin: 26px 0; max-width: 880px; }
.tl-entry { display: grid; grid-template-columns: 26px minmax(0, 1fr); gap: 14px; }
.tl-rail { position: relative; }
.tl-rail::before { content: ""; position: absolute; left: 11px; top: 4px; bottom: -18px; width: 2px; background: var(--grid); }
.tl-entry:last-child .tl-rail::before { bottom: auto; height: 24px; }
.tl-dot {
  position: absolute; left: 5px; top: 6px; width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--page); box-shadow: 0 0 0 1px var(--grid);
}
.tl-card {
  background: var(--surface); border: 1px solid var(--grid); border-radius: var(--radius);
  padding: 18px 22px; margin-bottom: 18px; min-width: 0; box-shadow: var(--shadow-1);
}
.tl-time { font-size: 12px; color: var(--muted); font-family: ui-monospace, Menlo, monospace; }
.tl-card h3 { margin: 4px 0 10px; font-size: 16.5px; letter-spacing: -0.01em; }
.md-compact { font-size: 14px; color: var(--ink-2); }
.md-compact ul { padding-left: 18px; margin: 6px 0; }
.md-compact li { margin: 3px 0; }
.md-compact p { margin: 6px 0; }
.md-compact strong { color: var(--ink); }
.md-compact pre { font-size: 12px; padding: 10px 12px; }

/* ---------------------------------------------------------------- tables/files */
.results-table, .kv-table {
  border-collapse: collapse; width: 100%; font-size: 14.5px; background: var(--surface);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-1);
}
.results-table th, .results-table td, .kv-table th, .kv-table td {
  border: 1px solid var(--grid); padding: 9px 13px; text-align: left;
}
.results-table th { background: var(--page); }
.kv-table th { background: var(--page); width: 190px; }
.file-list { list-style: none; padding: 0; }
.file-list li { padding: 7px 0; border-bottom: 1px solid var(--grid); }
.tree { list-style: none; padding-left: 0; }
.tree ul { list-style: none; padding-left: 20px; }
.tree-root { margin-bottom: 14px; }
.tree li { padding: 2px 0; font-size: 14.5px; }
.mono-small { font-size: 12.5px; color: var(--muted); }
.file-card { padding: 0; overflow: hidden; }
.file-head { display: flex; justify-content: space-between; padding: 10px 18px; border-bottom: 1px solid var(--grid); background: var(--page); }
.file-card .codeblock { border: 0; border-radius: 0; margin: 0; }

/* ---------------------------------------------------------------- chart */
.chart-fig { margin: 18px 0 8px; position: relative; }
.chart-fig svg { width: 100%; height: auto; }
.chart-fig .grid { stroke: var(--grid); stroke-width: 1; }
.chart-fig .axis { stroke: var(--baseline); stroke-width: 1; }
.chart-fig .tick { fill: var(--muted); font-size: 11px; font-family: ui-monospace, Menlo, monospace; }
.chart-fig .axis-title { fill: var(--ink-2); font-size: 12px; }
.chart-fig .series-label { font-size: 12px; font-weight: 600; }
.chart-fig .pt { cursor: pointer; }
.chart-fig figcaption { font-size: 12.5px; color: var(--muted); margin-top: 4px; }
.chart-tip {
  position: absolute; pointer-events: none; background: var(--ink); color: #fff;
  font-size: 12.5px; padding: 5px 10px; border-radius: 7px; white-space: nowrap; z-index: 5;
}

/* ---------------------------------------------------------------- comments */
.comments-wrap { max-width: 720px; margin: 0 auto; }
.comment-form {
  background: var(--surface); border: 1px solid var(--grid); border-radius: var(--radius);
  box-shadow: var(--shadow-1); margin: 26px 0 40px; overflow: hidden;
}
.cf-head {
  padding: 14px 22px; font-weight: 700; font-size: 15px;
  background: linear-gradient(180deg, var(--accent-wash), var(--surface));
  border-bottom: 1px solid var(--grid);
}
.cf-body { padding: 20px 22px 22px; }
.field { display: block; margin-bottom: 16px; }
.field-label {
  display: block; font-size: 12.5px; font-weight: 700; color: var(--ink-2);
  text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px;
}
.comment-form input, .comment-form textarea {
  width: 100%; border: 1.5px solid var(--grid); border-radius: 10px; background: var(--page);
  padding: 11px 14px; font-size: 15px; font-family: inherit; color: var(--ink);
  transition: border-color 0.15s, box-shadow 0.15s, background 0.15s;
  resize: vertical;
}
.comment-form input::placeholder, .comment-form textarea::placeholder { color: var(--baseline); }
.comment-form input:focus, .comment-form textarea:focus {
  outline: none; border-color: var(--accent); background: var(--surface);
  box-shadow: 0 0 0 4px rgba(42,120,214,0.12);
}
.cf-foot { display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-top: 4px; }
.cf-hint { font-size: 12.5px; color: var(--muted); }
.hp { position: absolute !important; left: -9999px !important; height: 0; width: 0; border: 0; padding: 0; }
.cl-head { display: flex; align-items: baseline; justify-content: space-between; border-bottom: 2px solid var(--ink); padding-bottom: 8px; margin-bottom: 20px; }
.cl-head h2 { margin: 0; font-size: 18px; font-weight: 750; }
.comment { display: flex; gap: 14px; padding: 18px 0; border-bottom: 1px solid var(--grid); }
.comment:last-child { border-bottom: 0; }
.avatar {
  flex: 0 0 auto; width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 750; font-size: 17px;
}
.comment-main { min-width: 0; flex: 1; }
.comment-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.comment-name { font-weight: 720; font-size: 15px; }
.comment-time { font-size: 12px; color: var(--muted); font-family: ui-monospace, Menlo, monospace; }
.comment-body { margin: 5px 0 0; font-size: 15px; color: var(--ink-2); white-space: pre-wrap; line-height: 1.6; }
.empty-state {
  text-align: center; padding: 44px 20px; color: var(--muted);
  background: var(--surface); border: 1px dashed var(--baseline); border-radius: var(--radius);
}
.empty-icon { font-size: 30px; display: block; margin-bottom: 8px; }
.flash {
  background: #eef7ee; border: 1px solid #cfe8cf; color: var(--good-text);
  border-radius: 10px; padding: 11px 18px; margin: 16px 0; font-size: 14px; font-weight: 600;
}
.flash-err { background: #fdf0ef; border-color: #f2cfcc; color: #a13430; }

/* ---------------------------------------------------------------- footer */
.site-footer { border-top: 1px solid var(--grid); margin-top: 56px; background: var(--surface); font-size: 14px; color: var(--ink-2); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 28px; padding: 32px 24px 20px; }
.footer-brand { font-weight: 750; color: var(--ink); font-size: 15px; }
.footer-tag { font-size: 13px; color: var(--muted); max-width: 340px; margin: 6px 0 0; }
.footer-h { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); font-weight: 700; margin-bottom: 8px; }
.footer-col { display: flex; flex-direction: column; gap: 5px; font-size: 13.5px; }
.footer-meta { color: var(--muted); font-size: 12px; }
.footer-legal { border-top: 1px solid var(--grid); padding: 14px 24px 26px; font-size: 12.5px; color: var(--muted); }

/* ---------------------------------------------------------------- mobile */
@media (max-width: 880px) {
  .split { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; }
}
@media (max-width: 720px) {
  body { font-size: 15px; }
  .wrap { padding: 0 16px; }
  .header-row { height: 56px; }
  .nav-toggle {
    display: flex; flex-direction: column; justify-content: center; gap: 5px;
    background: none; border: 0; padding: 10px; cursor: pointer; z-index: 60;
  }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.22s, opacity 0.18s; }
  .nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle.open span:nth-child(2) { opacity: 0; }
  .nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav {
    position: fixed; top: 56px; left: 0; right: 0; z-index: 50;
    background: var(--surface); border-bottom: 1px solid var(--grid);
    flex-direction: column; gap: 0; padding: 8px 12px 14px;
    box-shadow: var(--shadow-2);
    display: none;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 13px 12px; font-size: 16px; border-radius: 8px; border-bottom: 1px solid var(--grid); }
  .site-nav a:last-child { border-bottom: 0; }
  html { scroll-padding-top: 64px; }
  .hero { padding: 32px 16px 8px; margin: 0 -16px; }
  .hero h1 { font-size: 27px; }
  .lede { font-size: 16px; }
  .lede-eq code { font-size: 11px; white-space: normal; word-break: break-word; }
  .tiles { grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 22px 0; }
  .tile { padding: 15px 16px; }
  .tile-value { font-size: 27px; }
  .card { padding: 18px 18px; }
  .page-title { font-size: 25px; margin-top: 26px; }
  .doc-head h1 { font-size: 23px; }
  .doc-layout.has-toc { display: block; }
  .toc { position: static; max-height: none; margin-bottom: 16px; }
  .tl-entry { grid-template-columns: 18px minmax(0, 1fr); gap: 10px; }
  .tl-card { padding: 13px 15px; }
  .md h1 { font-size: 22px; } .md h2 { font-size: 18px; } .md h3 { font-size: 16px; }
  .md pre, .codeblock { font-size: 12px; padding: 10px 12px; }
  .results-table, .kv-table { font-size: 13px; display: block; overflow-x: auto; box-shadow: none; }
  .kv-table th { width: auto; }
  .file-head { flex-direction: column; gap: 2px; }
  .footer-grid { grid-template-columns: 1fr; gap: 18px; }
  .chart-fig { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .chart-fig svg { min-width: 560px; }
}
@media (max-width: 420px) {
  .hero h1 { font-size: 24px; }
}

/* ---- publications ---------------------------------------------------------- */
.pub-list { max-width: 860px; margin: 24px 0; }
.pub-card {
  display: block; background: var(--surface); border: 1px solid var(--grid);
  border-radius: var(--radius); padding: 26px 30px; margin-bottom: 18px;
  color: var(--ink); box-shadow: var(--shadow-1);
  transition: box-shadow 0.18s, transform 0.18s, border-color 0.18s;
}
.pub-card:hover { border-color: #b9d2f0; box-shadow: var(--shadow-2); transform: translateY(-2px); text-decoration: none; }
.pub-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.pub-card h2 { margin: 0 0 6px; font-size: 20px; letter-spacing: -0.015em; line-height: 1.3; }
.pub-authors { margin: 0 0 10px; font-size: 14px; color: var(--accent-dark); font-weight: 600; }
.pub-abstract { margin: 0 0 12px; font-size: 14px; color: var(--ink-2); }
.md img {
  max-width: 100%; height: auto; display: block; margin: 20px auto 6px;
  background: #fff; border: 1px solid var(--grid); border-radius: 10px; padding: 12px;
}
.md img + em, .md p > img ~ em { display: block; text-align: center; }