/* Drumlee — site styles. Self-hosted only: no webfonts, no CDN, no scripts, no trackers. */

:root {
  --paper:      #edf0f4;
  --panel:      #ffffff;
  --ink:        #101a2e;
  --slate:      #56637c;
  --rule:       #cfd6e0;
  --rule-soft:  #e2e7ed;
  --signal:     #a9541b;
  --steady:     #1d6b58;

  --sans:  ui-sans-serif, "Segoe UI Variable Text", "Segoe UI", Roboto, -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  --serif: Charter, "Iowan Old Style", "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono:  ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --radius: 7px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper:     #0f141c;
    --panel:     #161d27;
    --ink:       #e6ebf2;
    --slate:     #95a2b6;
    --rule:      #2a3442;
    --rule-soft: #212a36;
    --signal:    #e0904f;
    --steady:    #4fbfa2;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.68;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--ink); text-decoration-color: var(--signal); text-underline-offset: 3px; }
a:hover { color: var(--signal); }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 3px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--panel); color: var(--ink);
  padding: 10px 16px; border: 1px solid var(--rule); border-radius: var(--radius);
  font-family: var(--mono); font-size: 13px; z-index: 20;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- shell: sticky rail + document ---------- */

.shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px 72px;
  display: grid;
  grid-template-columns: 226px minmax(0, 1fr);
  gap: 60px;
  align-items: start;
}

.rail {
  position: sticky;
  top: 0;
  padding: 36px 0 40px;
}

.doc { padding: 36px 0 0; max-width: 70ch; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; gap: 0; padding-bottom: 56px; }
  .rail { position: static; padding: 22px 0 18px; border-bottom: 1px solid var(--rule); }
  .doc { padding-top: 28px; max-width: none; }
}

/* ---------- brand mark: a pacing bar ---------- */

.brand {
  display: inline-flex; align-items: center; gap: 11px;
  font-family: var(--sans); font-weight: 700; font-size: 18px;
  letter-spacing: -0.03em; color: var(--ink); text-decoration: none;
}
.brand:hover { color: var(--ink); }

.mark {
  position: relative;
  width: 36px; height: 11px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: linear-gradient(90deg, var(--signal) 0 58%, transparent 58%);
}
.mark::after {
  content: ""; position: absolute; top: -4px; bottom: -4px; left: 76%;
  width: 1px; background: var(--ink);
}

.rail .tagline {
  font-family: var(--mono); font-size: 11.5px; line-height: 1.6;
  letter-spacing: 0.04em; color: var(--slate);
  margin: 14px 0 26px; max-width: 20ch;
}

.rail nav { border-top: 1px solid var(--rule); }

.rail nav a {
  display: block;
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.02em;
  color: var(--slate); text-decoration: none;
  padding: 9px 0; border-bottom: 1px solid var(--rule-soft);
}
.rail nav a:hover { color: var(--signal); }

@media (max-width: 900px) {
  .rail .tagline { margin-bottom: 16px; max-width: none; }
  .rail nav { display: flex; flex-wrap: wrap; gap: 0 18px; border-top: 0; }
  .rail nav a { border-bottom: 0; padding: 4px 0; }
}

/* ---------- type ---------- */

.eyebrow {
  font-family: var(--mono); font-size: 11.5px; font-weight: 400;
  text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--signal); margin: 0 0 14px;
}

h1 {
  font-family: var(--sans); font-weight: 700;
  font-size: clamp(29px, 4.4vw, 40px); line-height: 1.14;
  letter-spacing: -0.035em; margin: 0 0 18px;
}

h2 {
  font-family: var(--sans); font-weight: 700;
  font-size: 21px; line-height: 1.25; letter-spacing: -0.025em;
  margin: 0 0 12px;
}

h3 {
  font-family: var(--sans); font-weight: 600;
  font-size: 16px; letter-spacing: -0.015em; margin: 26px 0 6px;
}

p { margin: 0 0 16px; }

.lede { font-size: 19px; line-height: 1.6; color: var(--slate); margin-bottom: 26px; }

.stamp { font-family: var(--mono); font-size: 12.5px; color: var(--slate); margin: 0 0 30px; }

.band { margin-top: 54px; padding-top: 32px; border-top: 1px solid var(--rule); }
.band > p:last-child { margin-bottom: 0; }

/* ---------- hero digest ---------- */

.digest {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 16px 18px 14px;
  font-family: var(--mono);
  animation: rise 480ms ease-out both;
}

.digest .line { display: flex; flex-wrap: wrap; gap: 4px 20px; font-size: 13.5px; color: var(--ink); margin: 0; }
.digest .line b { font-weight: 600; color: var(--signal); }

.digest .cap {
  display: block; margin-top: 12px; padding-top: 10px;
  border-top: 1px solid var(--rule-soft);
  font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--slate);
}

@keyframes rise { from { opacity: 0; transform: translateY(7px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .digest { animation: none; } }

/* ---------- capability rows ---------- */

.caps { margin: 0; }
.caps > div { padding: 15px 0; border-bottom: 1px solid var(--rule-soft); }
.caps > div:first-child { border-top: 1px solid var(--rule); }
.caps dt { font-family: var(--sans); font-weight: 600; font-size: 15.5px; letter-spacing: -0.01em; margin-bottom: 3px; }
.caps dd { margin: 0; color: var(--slate); font-size: 15.5px; }

/* ---------- scope ledger (signature) ---------- */

.ledger { border-top: 2px solid var(--ink); margin-bottom: 26px; }

.ledger .item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}
.ledger .scope { font-family: var(--mono); font-size: 13.5px; color: var(--ink); }
.ledger .why { grid-column: 1 / -1; color: var(--slate); font-size: 15.5px; }

.chip {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase;
  border: 1px solid var(--rule); border-radius: 999px; padding: 3px 10px;
  white-space: nowrap; align-self: start;
}
.chip.read  { color: var(--steady); }
.chip.write { color: var(--signal); }

.out { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 16px; list-style: none; }
.out li {
  font-family: var(--mono); font-size: 12px; color: var(--slate);
  border: 1px dashed var(--rule); border-radius: 6px; padding: 5px 10px;
  text-decoration: line-through; text-decoration-color: var(--rule);
  margin: 0;
}

/* ---------- numbered flow (a real sequence) ---------- */

.steps { counter-reset: s; list-style: none; margin: 0; padding: 0; }

.steps li {
  counter-increment: s;
  display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 16px;
  padding: 15px 0; border-bottom: 1px solid var(--rule-soft);
  margin: 0;
}
.steps li:first-child { border-top: 1px solid var(--rule); }
.steps li::before {
  content: counter(s, decimal-leading-zero);
  font-family: var(--mono); font-size: 12px; color: var(--signal); padding-top: 4px;
}
.steps b { font-family: var(--sans); font-weight: 600; font-size: 15.5px; }
.steps span { display: block; color: var(--slate); font-size: 15.5px; }

/* ---------- data table ---------- */

.tbl { width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 22px; }
.tbl th {
  font-family: var(--mono); font-weight: 400; font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--slate);
  text-align: left; padding: 0 16px 9px 0; border-bottom: 2px solid var(--ink);
}
.tbl td { text-align: left; vertical-align: top; padding: 13px 16px 13px 0; border-bottom: 1px solid var(--rule); color: var(--slate); }
.tbl td:first-child { color: var(--ink); }
.tbl tr:last-child td { border-bottom: 0; }

.wrapx { overflow-x: auto; }

/* ---------- note ---------- */

.note {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-left: 2px solid var(--signal);
  border-radius: var(--radius);
  padding: 15px 18px;
  margin: 24px 0;
  font-size: 15.5px;
  color: var(--slate);
}
.note > :last-child { margin-bottom: 0; }

code {
  font-family: var(--mono); font-size: 13px;
  background: var(--panel); border: 1px solid var(--rule);
  border-radius: 5px; padding: 1px 6px; color: var(--ink);
}

/* ---------- legal pages ---------- */

.legal { max-width: 68ch; }
.legal h2 { font-size: 18px; margin: 34px 0 10px; }
.legal h2 .no { font-family: var(--mono); font-weight: 400; font-size: 13px; color: var(--signal); margin-right: 9px; }
.legal ul { padding-left: 20px; margin: 0 0 16px; }
.legal li { margin-bottom: 7px; }

/* ---------- contact + footer ---------- */

.contact { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 22px; margin-top: 6px; }
.contact h3 { margin-top: 0; }
.contact p { color: var(--slate); font-size: 15.5px; margin-bottom: 0; }

.addr { font-style: normal; color: var(--slate); font-size: 14px; line-height: 1.65; }

.foot {
  border-top: 1px solid var(--rule);
  margin-top: 56px; padding-top: 24px;
  color: var(--slate); font-size: 14px;
}
.foot .links { display: flex; flex-wrap: wrap; gap: 6px 20px; font-family: var(--mono); font-size: 12.5px; margin-bottom: 14px; }
.foot .links a { color: var(--slate); text-decoration: none; }
.foot .links a:hover { color: var(--signal); }
.foot .disclaimer { font-size: 13px; margin: 12px 0 0; }