/* ---------- tokens ---------- */
:root {
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;
  --serif: "IBM Plex Serif", ui-serif, Georgia, serif;

  --accent-h: 0;
  --accent: oklch(0.62 0.22 25);
  --accent-soft: oklch(0.62 0.22 25 / 0.16);
  --accent-line: oklch(0.62 0.22 25 / 0.46);

  --crit: #e51400;
  --high: #ff8c42;
  --med:  #dcdcaa;
  --low:  #4ec9b0;
  --info: #569cd6;

  --row-h: 36px;
  --pad: 14px;
  --gut: 24px;
  --maxw: 1180px;
}

/* dark (default) */
:root,
[data-theme="dark"] {
  --bg:        #1e1e1e;
  --bg-elev:   #252526;
  --bg-soft:   #2d2d30;
  --line:      #3c3c3c;
  --line-soft: #2a2a2a;
  --ink:       #d4d4d4;
  --ink-mute:  #9d9d9d;
  --ink-dim:   #6e6e6e;
  --grid-dot:  rgba(212,212,212,0.04);
  --shadow:    0 0 0 1px var(--line), 0 1px 0 rgba(0,0,0,0.4);
  --accent: #e51400;
  --accent-soft: rgba(229, 20, 0, 0.14);
  --accent-line: rgba(229, 20, 0, 0.55);
}
[data-theme="light"] {
  --bg:        #ffffff;
  --bg-elev:   #f3f3f3;
  --bg-soft:   #ececec;
  --line:      #d4d4d4;
  --line-soft: #e5e5e5;
  --ink:       #1f1f1f;
  --ink-mute:  #5a5a5a;
  --ink-dim:   #8a8a8a;
  --grid-dot:  rgba(0,0,0,0.05);
  --accent:    #c8102e;
  --accent-soft: rgba(200, 16, 46, 0.14);
  --accent-line: rgba(200, 16, 46, 0.55);
  --shadow:    0 0 0 1px var(--line);
  --crit: #c8102e;
}

/* density */
[data-density="compact"] { --row-h: 30px; --pad: 10px; --gut: 18px; }
[data-density="roomy"]   { --row-h: 44px; --pad: 18px; --gut: 32px; }

/* width */
[data-width="narrow"]  { --maxw: 980px; }
[data-width="default"] { --maxw: 1180px; }
[data-width="wide"]    { --maxw: 1400px; }

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
  font-feature-settings: "ss02", "cv11";
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(var(--grid-dot) 1px, transparent 1px);
  background-size: 24px 24px;
  background-position: 0 0;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--accent-soft); color: var(--ink); }

/* ---------- layout shell ---------- */
.frame {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gut);
  position: relative;
}

/* registration marks at the four corners of the page */
.reg {
  position: fixed;
  width: 14px; height: 14px;
  pointer-events: none;
  color: var(--ink-dim);
  z-index: 5;
}
.reg::before, .reg::after {
  content: ""; position: absolute; background: currentColor;
}
.reg::before { left: 50%; top: 0; width: 1px; height: 100%; transform: translateX(-0.5px); }
.reg::after  { top: 50%; left: 0; height: 1px; width: 100%; transform: translateY(-0.5px); }
.reg.tl { top: 14px; left: 14px; }
.reg.tr { top: 14px; right: 14px; }
.reg.bl { bottom: 14px; left: 14px; }
.reg.br { bottom: 14px; right: 14px; }

/* ---------- top bar ---------- */
.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(6px);
}
.topbar-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  height: 44px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 18px; height: 18px;
  border: 1px solid var(--ink);
  position: relative;
  display: inline-block;
}
.brand-mark::before, .brand-mark::after {
  content: ""; position: absolute; background: var(--ink);
}
.brand-mark::before { left: 50%; top: -3px; bottom: -3px; width: 1px; transform: translateX(-0.5px); }
.brand-mark::after  { top: 50%; left: -3px; right: -3px; height: 1px; transform: translateY(-0.5px); }
.brand-name { text-transform: uppercase; }
.brand-slash { color: var(--ink-dim); }
.brand-tag { color: var(--ink-mute); font-weight: 400; }

.topnav {
  display: flex; gap: 22px; justify-content: center;
  font-size: 12px; color: var(--ink-mute);
}
.topnav a { position: relative; padding: 4px 0; }
.topnav a:hover { color: var(--ink); }
.topnav a.active { color: var(--ink); }
.topnav a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--accent);
}

.topright {
  display: flex; align-items: center; gap: 14px;
  font-size: 11px; color: var(--ink-mute);
}
.kbd {
  font-family: var(--mono);
  font-size: 10px;
  border: 1px solid var(--line);
  padding: 1px 5px;
  border-radius: 2px;
  color: var(--ink-mute);
  background: var(--bg-elev);
}
.theme-toggle {
  display: flex; align-items: center; gap: 6px;
  border: 1px solid var(--line);
  padding: 4px 8px;
  border-radius: 2px;
  font-size: 11px;
  color: var(--ink-mute);
}
.theme-toggle:hover { color: var(--ink); border-color: var(--ink-mute); }

/* ---------- status strip ---------- */
.status-strip {
  border-bottom: 1px solid var(--line);
  font-size: 11px;
  color: var(--ink-mute);
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 40px,
      var(--line-soft) 40px,
      var(--line-soft) 41px
    ),
    var(--bg);
}
.status-inner {
  display: flex; align-items: center; gap: 22px;
  height: 28px; overflow: hidden; white-space: nowrap;
}
.status-cell { display: inline-flex; align-items: center; gap: 6px; }
.status-cell .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--low);
  box-shadow: 0 0 0 2px color-mix(in oklab, var(--low) 30%, transparent);
}
.status-cell .lab { color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; }
.status-cell .val { color: var(--ink); }

/* ---------- masthead ---------- */
.masthead {
  padding: 56px 0 36px;
  border-bottom: 1px dashed var(--line);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  align-items: end;
}
.masthead h1 {
  font-family: "Space Grotesk", var(--sans);
  font-weight: 700;
  font-size: clamp(34px, 5.2vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0 0 14px;
  color: var(--ink);
  position: relative;
  display: block;
}
.masthead h1 .title-line {
  display: inline-flex;
  align-items: baseline;
  gap: 0.18em;
  white-space: nowrap;
}
.masthead h1 .row2 { display: block; position: relative; }
.masthead h1 .prompt {
  font-family: var(--mono);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.72em;
  letter-spacing: -0.02em;
  margin-right: 0.18em;
  user-select: none;
  transform: translateY(-0.04em);
}
.masthead h1 .accent {
  color: var(--accent);
  font-weight: 700;
  font-style: normal;
}

.masthead h1 .row2.sub {
  font-size: clamp(12px, 1.15vw, 15px);
  font-weight: 500;
  color: var(--ink-mute);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-top: 14px;
  font-family: var(--mono);
}
.masthead h1 .row2.sub .pipe {
  color: var(--accent);
  margin: 0 8px;
  font-weight: 600;
}
.masthead .lede {
  max-width: 60ch;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-mute);
  line-height: 1.6;
}
.masthead .lede strong { color: var(--ink); font-weight: 500; }

.maststats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--line);
  font-size: 11px;
}
.maststats > div {
  padding: 10px 14px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.maststats > div:nth-child(2n) { border-right: 0; }
.maststats > div:nth-last-child(-n+2) { border-bottom: 0; }
.maststats .k { color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; font-size: 10px; margin-bottom: 4px; }
.maststats .v { color: var(--ink); font-weight: 500; font-size: 18px; font-family: var(--mono); }
.maststats .v small { color: var(--ink-mute); font-weight: 400; font-size: 11px; margin-left: 4px; }

/* ASCII rule */
.ascii-rule {
  font-family: var(--mono);
  color: var(--ink-dim);
  white-space: pre;
  overflow: hidden;
  font-size: 11px;
  line-height: 1;
  margin: 0;
  padding: 12px 0;
  user-select: none;
}
.ascii-rule .label {
  color: var(--ink-mute);
  background: var(--bg);
  padding: 0 8px;
}

/* ---------- main grid ---------- */
.main-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 40px;
  padding: 28px 0 60px;
  align-items: start;
}
@media (max-width: 900px) {
  .main-grid { grid-template-columns: 1fr; }
  .side { order: -1; }
}

/* ---------- featured ---------- */
.featured {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  display: grid;
  grid-template-columns: 200px 1fr;
  position: relative;
  overflow: hidden;
}
.featured::before {
  content: "PINNED // FEATURED";
  position: absolute;
  top: 10px; right: 10px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--bg);
  background: var(--accent);
  padding: 2px 6px;
  font-weight: 600;
}
.featured-diagram {
  border-right: 1px solid var(--line);
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px) 0 0 / 100% 16px,
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 16px 100%,
    var(--bg-soft);
  position: relative;
  min-height: 200px;
  display: flex; align-items: center; justify-content: center;
}
.featured-diagram svg { width: 88%; height: auto; }
.featured-body {
  padding: 22px 24px;
  display: flex; flex-direction: column; gap: 12px;
}
.featured .meta {
  display: flex; gap: 14px; font-size: 11px; color: var(--ink-mute);
  text-transform: uppercase; letter-spacing: 0.08em;
}
.featured h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
  text-wrap: pretty;
}
.featured h2 a:hover { color: var(--accent); }
.featured .summary {
  color: var(--ink-mute);
  font-size: 13px;
  line-height: 1.6;
  max-width: 64ch;
}
.featured .tags {
  display: flex; gap: 6px; margin-top: 4px;
}

/* ---------- search + filters ---------- */
.searchbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--bg-elev);
  height: 40px;
}
.searchbar .pfx {
  padding: 0 12px;
  color: var(--accent);
  font-weight: 600;
  border-right: 1px solid var(--line);
  height: 100%; display: flex; align-items: center;
  font-size: 13px;
}
.searchbar input {
  border: 0; background: transparent;
  font: 400 13px/1 var(--mono);
  color: var(--ink);
  padding: 0 12px;
  outline: none;
  height: 100%;
}
.searchbar input::placeholder { color: var(--ink-dim); }
.searchbar .sfx {
  padding: 0 12px;
  color: var(--ink-dim);
  font-size: 11px;
  border-left: 1px solid var(--line);
  height: 100%; display: flex; align-items: center; gap: 6px;
}

.filterbar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
}
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-mute);
  background: transparent;
  letter-spacing: 0.04em;
  transition: all 120ms ease;
}
.chip:hover { color: var(--ink); border-color: var(--ink-mute); }
.chip.on {
  color: var(--bg);
  background: var(--accent);
  border-color: var(--accent);
}
.chip .ct {
  font-size: 10px;
  color: var(--ink-dim);
  margin-left: 2px;
}
.chip.on .ct { color: color-mix(in oklab, var(--bg) 70%, var(--accent)); }

/* ---------- archive list ---------- */
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin: 28px 0 8px;
}
.section-head h3 {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  font-weight: 500;
}
.section-head .right { font-size: 11px; color: var(--ink-dim); }

.archive {
  border-top: 1px solid var(--line);
}

.year-head {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 18px;
  padding: 18px 0 8px;
  border-bottom: 1px dashed var(--line-soft);
  align-items: baseline;
}
.year-head .y {
  font-family: var(--serif);
  font-style: italic;
  font-size: 24px;
  color: var(--ink);
  font-weight: 500;
}
.year-head .y small {
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  color: var(--ink-dim);
  margin-left: 8px;
  letter-spacing: 0.1em;
}
.year-head .summary-line {
  font-size: 11px; color: var(--ink-dim);
  letter-spacing: 0.04em;
}

.row {
  display: grid;
  grid-template-columns: 72px 14px minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: baseline;
  padding: 9px 6px 9px 0;
  min-height: var(--row-h);
  border-bottom: 1px solid var(--line-soft);
  font-size: 13px;
  position: relative;
  transition: background 120ms ease, padding 120ms ease;
}
.row .date { padding-top: 1px; }
.row .sev  { padding-top: 4px; align-self: start; }
.row .read { padding-top: 2px; align-self: start; }
.row .titlewrap {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  min-width: 0;
}
.row .title {
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: -0.005em;
  line-height: 1.35;
  min-width: 0;
  flex: 1 1 100%;
  text-wrap: pretty;
}
.row:hover .title { color: var(--accent); }
.row .inlinetag {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  white-space: nowrap;
  flex: 0 0 auto;
}
.row:hover .inlinetag { color: var(--ink-mute); }
.row .read {
  font-size: 10px;
  color: var(--ink-dim);
  text-align: right;
  letter-spacing: 0.06em;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 120ms ease;
}
.row:hover .read { opacity: 1; }
.row:hover {
  background: var(--bg-elev);
  padding-left: 8px;
}
.row:hover::before {
  content: "▸";
  position: absolute; left: -2px; color: var(--accent);
  font-size: 10px;
}
.row .date {
  color: var(--ink-mute);
  font-size: 11px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.row .sev { display: inline-flex; align-items: center; gap: 5px; font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; }
.row .sev .sq {
  width: 8px; height: 8px;
  background: var(--med);
  display: inline-block;
}
.row .sev .lab { display: none; }

@media (max-width: 720px) {
  .row { grid-template-columns: 70px 14px minmax(0,1fr); gap: 10px; }
  .row .inlinetag, .row .read { display: none; }
}

/* severity colors */
.sev[data-s="critical"] .sq { background: var(--crit); }
.sev[data-s="high"] .sq     { background: var(--high); }
.sev[data-s="medium"] .sq   { background: var(--med); }
.sev[data-s="low"] .sq      { background: var(--low); }
.sev[data-s="info"] .sq     { background: var(--info); }
.sev[data-s="critical"]     { color: var(--crit); }

/* ---------- side panel ---------- */
.side {
  display: flex; flex-direction: column; gap: 22px;
  position: sticky; top: 84px;
}
.panel {
  border: 1px solid var(--line);
  background: var(--bg-elev);
  font-size: 12px;
}
.panel-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 10px;
  color: var(--ink-mute);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: var(--bg-soft);
}
.panel-head .dotrow { display: inline-flex; gap: 4px; }
.panel-head .dotrow span {
  width: 6px; height: 6px; background: var(--line);
  display: inline-block;
}
.panel-head .dotrow span:first-child { background: var(--accent); }
.panel-body { padding: 14px; line-height: 1.55; }

.about p { margin: 0 0 10px; color: var(--ink-mute); }
.about strong { color: var(--ink); font-weight: 500; }
.about ul { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 4px; }
.about li {
  display: grid; grid-template-columns: 80px 1fr; gap: 8px;
  font-size: 11px;
}
.about li .k { color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; font-size: 10px; padding-top: 1px; }
.about li .v { color: var(--ink); }
.about li .v a { border-bottom: 1px dotted var(--ink-mute); }
.about li .v a:hover { color: var(--accent); border-color: var(--accent); }

.fingerprint {
  font-size: 10.5px;
  color: var(--ink-mute);
  word-break: break-all;
  background: var(--bg-soft);
  border: 1px dashed var(--line);
  padding: 8px;
  margin-top: 10px;
  line-height: 1.5;
  font-family: var(--mono);
}
.fingerprint .label {
  font-size: 9px;
  color: var(--ink-dim);
  letter-spacing: 0.16em;
  display: block;
  margin-bottom: 4px;
}

.taglist { display: flex; flex-wrap: wrap; gap: 4px; }

.activity {
  display: grid; gap: 0;
}
.activity-row {
  display: grid; grid-template-columns: 50px 1fr;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 11px;
}
.activity-row:last-child { border-bottom: 0; }
.activity-row .when { color: var(--ink-dim); }
.activity-row .what { color: var(--ink); }
.activity-row .what em { font-style: normal; color: var(--accent); }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 32px;
  font-size: 11px;
  color: var(--ink-mute);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 18px;
  align-items: center;
}
.footer .l { text-align: left; }
.footer .c { text-align: center; color: var(--ink-dim); white-space: pre; font-size: 10px; }
.footer .r { text-align: right; }
.footer a { border-bottom: 1px dotted var(--ink-dim); }
.footer a:hover { color: var(--ink); border-color: var(--ink-mute); }

/* ---------- caret blink ---------- */
.caret {
  display: inline-block;
  width: 8px; height: 1em;
  background: var(--accent);
  vertical-align: -2px;
  margin-left: 2px;
  animation: blink 1.05s steps(2, end) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* tweak panel positioning override (it's fine as-is from starter) */