/* MV research briefing -- LIGHT paper theme. No dark mode. */
:root {
  --bg: #f6f3ea;
  --paper: #fffdf6;
  --sidebar: #efe9d8;
  --ink: #1c1914;
  --muted: #4f4a40;
  --faint: #6f685c;
  --gold: #8a6724;
  --gold-soft: #c4a46a;
  --rule: #d4cbb6;
  --rule-strong: #b9ae95;
  --warn: #8c3d22;
  --hold: #6e5724;
  --ok: #2f4d2a;
  --chip: #f3ecda;
  --current-bg: #efe2c4;
  --sans: "IBM Plex Sans", "Segoe UI", system-ui, sans-serif;
  --serif: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, serif;
  --mono: ui-monospace, "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
}

html { height: 100%; }

body {
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  min-height: 100%;
}

a { color: var(--gold); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: #6e5018; }

code, .id {
  font-family: var(--mono);
  font-size: 0.88em;
  color: #3a3428;
  background: var(--chip);
  padding: 0.05em 0.28em;
}

pre {
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.5;
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 0.9rem 1rem;
  overflow: auto;
  max-width: 100%;
}

pre code { background: transparent; padding: 0; color: var(--ink); }

.kicker {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.7rem;
  font-weight: 600;
}

h1, h2, h3 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 0.75rem;
  line-height: 1.25;
  color: var(--ink);
}
h1 { font-size: clamp(1.85rem, 3.4vw, 2.55rem); }
h2 { font-size: clamp(1.35rem, 2.2vw, 1.75rem); margin-top: 1.6rem; }
h3 { font-size: 1.15rem; margin-top: 1.25rem; font-family: var(--sans); }

.lede {
  color: var(--muted);
  max-width: 46rem;
  margin: 0 0 1.25rem;
  font-size: 1.05rem;
}

p { margin: 0 0 0.85rem; max-width: 50rem; }

ul, ol { margin: 0 0 1.05rem 1.2rem; padding: 0; max-width: 50rem; }
li { margin: 0 0 0.38rem; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.1rem 1.6rem;
  max-width: 68rem;
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  max-width: 72rem;
}
.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 1rem 1.05rem 0.95rem;
}
.card a.card-link { text-decoration: none; color: inherit; display: block; }
.card h3 {
  font-family: var(--serif);
  font-size: 1.08rem;
  letter-spacing: -0.01em;
  color: var(--gold);
  margin: 0 0 0.45rem;
  font-weight: 600;
}
.card p { margin: 0; font-size: 0.95rem; color: var(--ink); max-width: none; }
.card .sub { color: var(--muted); font-size: 0.86rem; margin-top: 0.45rem; }

table {
  width: 100%;
  max-width: 72rem;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: 0 0 1.15rem;
  background: var(--paper);
}
th, td {
  text-align: left;
  vertical-align: top;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--rule);
}
th {
  color: var(--gold);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: var(--chip);
  border-bottom: 1px solid var(--rule-strong);
}
td.num, th.num { font-family: var(--mono); white-space: nowrap; }

.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 0.08rem 0.4rem;
  border: 1px solid var(--rule-strong);
  color: var(--ink);
  background: var(--chip);
}
.tag.warn { border-color: var(--warn); color: var(--warn); }
.tag.hold { border-color: var(--hold); color: var(--hold); }
.tag.ok { border-color: var(--ok); color: var(--ok); }

.rule {
  height: 1px;
  background: var(--rule);
  border: 0;
  margin: 1.15rem 0 1.2rem;
  max-width: 72rem;
}

.title-mark {
  font-family: var(--mono);
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.2em;
  margin-bottom: 0.9rem;
}
.title-date {
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  color: var(--muted);
  margin: 0.3rem 0 1.2rem;
}
.stamp {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.5rem;
  margin: 1rem 0 0.4rem;
}
.note {
  font-size: 0.92rem;
  color: var(--muted);
  max-width: 50rem;
}
.board-note {
  font-size: 0.78rem;
  color: #8a8376;
  margin: 0.15rem 0 1.05rem;
  max-width: 50rem;
}

/* layout */
.site-head {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 1.25rem;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
}
.site-head .brand {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink);
  text-decoration: none;
}
.site-head .brand b { color: var(--gold); font-weight: 600; }
.site-head .actions { display: flex; gap: 0.7rem; align-items: center; flex-wrap: wrap; }
.site-head .actions a {
  font-size: 14px;
  text-decoration: none;
  border: 1px solid var(--rule-strong);
  padding: 0.28rem 0.65rem;
  background: var(--bg);
  color: var(--ink);
}
.site-head .actions a.primary {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--chip);
}

.shell {
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  min-height: calc(100vh - 3.2rem);
}

.nav {
  background: var(--sidebar);
  border-right: 1px solid var(--rule);
  padding: 1rem 0.85rem 2.4rem;
  position: sticky;
  top: 3.15rem;
  align-self: start;
  height: calc(100vh - 3.15rem);
  overflow: auto;
}
.nav h2 {
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--faint);
  margin: 1.15rem 0 0.3rem;
  font-weight: 600;
}
.nav h2:first-child { margin-top: 0.15rem; }
.nav a {
  display: block;
  text-decoration: none;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.35;
  padding: 0.28rem 0.45rem;
  border-left: 2px solid transparent;
}
.nav a:hover { background: var(--paper); }
.nav a.current {
  background: var(--current-bg);
  border-left-color: var(--gold);
  color: #5a4214;
  font-weight: 600;
}
.nav .sub a { padding-left: 0.9rem; font-size: 13.5px; color: var(--muted); }
.nav .sub a.current { color: #5a4214; }

.doc {
  padding: 1.6rem 2rem 3.2rem;
  max-width: 78rem;
}
.doc-foot {
  margin-top: 2.4rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  color: var(--faint);
  max-width: 50rem;
}

.btn-row { display: flex; flex-wrap: wrap; gap: 0.55rem; margin: 0.9rem 0 1.2rem; }
.btn {
  display: inline-block;
  text-decoration: none;
  border: 1px solid var(--gold);
  color: var(--gold);
  background: var(--chip);
  padding: 0.4rem 0.75rem;
  font-size: 15px;
}
.btn:hover { background: var(--current-bg); color: #5a4214; }

.file-table td:last-child, .file-table th:last-child { white-space: nowrap; }
.file-table a { margin-right: 0.6rem; }

/* login -- same paper, LIGHT */
body.login {
  background: var(--bg);
  color: var(--ink);
}
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6vh 6vw;
  background: var(--bg);
}
.login-card {
  width: min(28rem, 100%);
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 2.1rem 2rem 1.7rem;
}
.login-card h1 { font-size: 1.85rem; margin-bottom: 0.35rem; }
.login-card form { margin-top: 1.4rem; }
label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 0.35rem;
  font-weight: 600;
}
input[type="text"], input[type="password"] {
  width: 100%;
  background: #fff;
  border: 1px solid var(--rule-strong);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 16px;
  padding: 0.65rem 0.7rem;
  margin-bottom: 1rem;
  outline: none;
}
input:focus { border-color: var(--gold); }
.login-card button[type="submit"] {
  appearance: none;
  background: var(--chip);
  color: var(--gold);
  border: 1px solid var(--gold);
  font-family: var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-size: 12px;
  padding: 0.7rem 1.1rem;
  cursor: pointer;
}
.login-card button[type="submit"]:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.banner {
  border: 1px solid var(--warn);
  color: var(--warn);
  background: #f8ece6;
  padding: 0.55rem 0.7rem;
  font-size: 0.9rem;
  margin: 0.9rem 0 0;
}
.banner[hidden] { display: none; }

.md-body h1 { font-size: 1.7rem; }
.md-body h2 { font-size: 1.35rem; }
.md-body table { font-size: 0.9rem; }

@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .nav {
    position: relative;
    top: 0;
    height: auto;
    max-height: 42vh;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .doc { padding: 1.2rem 1.1rem 2.4rem; }
}
@media (max-width: 640px) {
  .grid-4 { grid-template-columns: 1fr; }
  body { font-size: 17px; }
  .site-head { flex-wrap: wrap; }
}