/* PutraLib - academic editorial. UPM maroon + gold on warm paper.
   No webfonts: zero render-blocking requests, works offline on campus. */
:root {
  --maroon-900: oklch(24% 0.09 22);
  --maroon-700: oklch(37% 0.14 24);
  --maroon-500: oklch(48% 0.16 25);
  --gold-600:   oklch(68% 0.13 78);
  --gold-400:   oklch(80% 0.12 85);

  --paper:      oklch(97.5% 0.008 85);
  --surface:    oklch(100% 0 0);
  --surface-2:  oklch(95.5% 0.010 82);
  --line:       oklch(88% 0.012 70);
  --ink:        oklch(23% 0.015 40);
  --ink-2:      oklch(46% 0.012 45);

  --ok:    oklch(52% 0.13 155);
  --warn:  oklch(62% 0.14 70);
  --bad:   oklch(52% 0.19 27);

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Inter, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;

  --step--1: clamp(.78rem, .76rem + .1vw, .84rem);
  --step-0:  clamp(.94rem, .91rem + .15vw, 1rem);
  --step-1:  clamp(1.15rem, 1.05rem + .4vw, 1.35rem);
  --step-2:  clamp(1.5rem, 1.25rem + 1vw, 2.1rem);
  --step-3:  clamp(2rem, 1.4rem + 2.6vw, 3.4rem);

  --r: 3px;
  --shadow: 0 1px 2px oklch(24% 0.09 22 / .06), 0 8px 24px -12px oklch(24% 0.09 22 / .18);
  --ease: cubic-bezier(.16,1,.3,1);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: var(--step-0)/1.55 var(--sans);
  /* faint paper grain, painted not fetched */
  background-image: radial-gradient(oklch(24% 0.09 22 / .022) 1px, transparent 1px);
  background-size: 4px 4px;
}
a { color: var(--maroon-700); text-underline-offset: 3px; }
a:hover { color: var(--maroon-500); }
h1,h2,h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -.015em; margin: 0 0 .4em; }
h1 { font-size: var(--step-2); }
h2 { font-size: var(--step-1); }
h3 { font-size: var(--step-0); font-family: var(--sans); font-weight: 650;
     text-transform: uppercase; letter-spacing: .08em; color: var(--ink-2); }
p { margin: 0 0 1em; }
small, .small { font-size: var(--step--1); color: var(--ink-2); }

/* ---------- masthead ---------- */
.masthead {
  background: linear-gradient(160deg, var(--maroon-900), var(--maroon-700) 70%);
  color: oklch(97% 0.01 80); position: sticky; top: 0; z-index: 20;
  border-bottom: 3px solid var(--gold-600);
}
.masthead .bar { max-width: 1180px; margin: 0 auto; padding: .6rem 1.25rem;
  display: flex; gap: 1.5rem; align-items: center; flex-wrap: wrap; }
.brand { display: flex; align-items: baseline; gap: .55rem; text-decoration: none;
  color: inherit; margin-right: auto; }
.brand b { font-family: var(--serif); font-size: 1.3rem; letter-spacing: -.02em; }
.brand span { font-size: .68rem; text-transform: uppercase; letter-spacing: .18em;
  color: var(--gold-400); }
.masthead nav { display: flex; gap: .25rem; flex-wrap: wrap; }
.masthead nav a, .masthead nav button {
  color: oklch(93% 0.02 80); text-decoration: none; font-size: var(--step--1);
  padding: .4rem .7rem; border-radius: var(--r); border: 0; background: transparent;
  cursor: pointer; font-family: inherit; transition: background var(--ease) .18s;
}
.masthead nav a:hover, .masthead nav button:hover { background: oklch(100% 0 0 / .13); }
.masthead nav a[aria-current] { background: oklch(100% 0 0 / .18); color: #fff;
  box-shadow: inset 0 -2px 0 var(--gold-400); }
.masthead.staff { background: linear-gradient(160deg, oklch(21% 0.02 250), oklch(30% 0.03 255)); }

/* ---------- layout ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 1.75rem 1.25rem 5rem; }
.wrap.narrow { max-width: 820px; }
.split { display: grid; grid-template-columns: minmax(0,1fr) 300px; gap: 2.25rem; align-items: start; }
.split.left { grid-template-columns: 240px minmax(0,1fr); }
@media (max-width: 860px) { .split, .split.left { grid-template-columns: 1fr; } }
.stack > * + * { margin-top: 1.1rem; }
.row { display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }
.spread { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  flex-wrap: wrap; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 3rem 0 2.25rem; }
.hero::before {
  content: ""; position: absolute; inset: -2rem -50vw 0; z-index: -1;
  background:
    radial-gradient(60% 100% at 20% 0%, oklch(80% 0.12 85 / .20), transparent 65%),
    radial-gradient(50% 90% at 85% 10%, oklch(48% 0.16 25 / .10), transparent 60%);
}
.hero h1 { font-size: var(--step-3); line-height: 1.02; max-width: 15ch; }
.hero h1 em { font-style: normal; color: var(--maroon-700);
  background: linear-gradient(transparent 62%, var(--gold-400) 62%); }
.hero p.lede { font-size: var(--step-1); color: var(--ink-2); max-width: 52ch;
  font-family: var(--serif); }

/* ---------- search ---------- */
.searchbar { display: flex; gap: 0; box-shadow: var(--shadow); border-radius: var(--r);
  border: 1px solid var(--line); background: var(--surface); overflow: hidden; max-width: 620px; }
.searchbar input { flex: 1; border: 0; padding: .95rem 1.1rem; font-size: 1.05rem;
  background: transparent; font-family: inherit; color: var(--ink); min-width: 0; }
.searchbar input:focus { outline: 2px solid var(--gold-600); outline-offset: -2px; }
.searchbar button { border: 0; background: var(--maroon-700); color: #fff; padding: 0 1.5rem;
  font: 600 var(--step-0) var(--sans); cursor: pointer;
  transition: background var(--ease) .2s; }
.searchbar button:hover { background: var(--maroon-500); }

/* ---------- cards / records ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r);
  padding: 1.15rem 1.25rem; box-shadow: var(--shadow); }
.card.tight { padding: .85rem 1rem; }
.card.accent { border-left: 3px solid var(--gold-600); }

.record { display: grid; grid-template-columns: 62px minmax(0,1fr); gap: 1rem;
  padding: 1.1rem 0; border-bottom: 1px solid var(--line); }
.record:last-child { border-bottom: 0; }
.record .cover { width: 62px; height: auto; aspect-ratio: 2/3; object-fit: cover; border-radius: 2px;
  background: linear-gradient(150deg, var(--surface-2), var(--line)); display: grid;
  place-items: center; font: 600 1.4rem var(--serif); color: var(--maroon-700);
  border: 1px solid var(--line); }
.record h2 { font-size: var(--step-1); margin-bottom: .15rem; line-height: 1.25; }
.record h2 a { text-decoration: none; }
.record h2 a:hover { text-decoration: underline; }
.byline { color: var(--ink-2); font-family: var(--serif); font-size: var(--step-0); }

.grid { display: grid; gap: 1.15rem;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.shelf-card { text-decoration: none; color: inherit; display: block; }
.shelf-card .cover { width: 100%; height: auto; aspect-ratio: 2/3; object-fit: cover; margin-bottom: .5rem;
  transition: transform var(--ease) .3s, box-shadow var(--ease) .3s; box-shadow: var(--shadow); }
.shelf-card:hover .cover { transform: translateY(-4px) rotate(-.6deg); box-shadow:
  0 14px 32px -14px oklch(24% 0.09 22 / .5); }
.shelf-card div.cover { font-size: clamp(1.6rem, 5vw, 2.4rem); }
.shelf-card b { display: block; font-size: var(--step--1); line-height: 1.3; font-weight: 600; }

/* ---------- pills / status ---------- */
.pill { display: inline-flex; align-items: center; gap: .32rem; font-size: .7rem;
  font-weight: 650; letter-spacing: .05em; text-transform: uppercase;
  padding: .2rem .5rem; border-radius: 999px; background: var(--surface-2);
  color: var(--ink-2); border: 1px solid var(--line); white-space: nowrap; }
.pill.ok   { color: var(--ok);   border-color: oklch(52% 0.13 155 / .35); background: oklch(52% 0.13 155 / .09); }
.pill.warn { color: oklch(45% 0.14 70); border-color: oklch(62% 0.14 70 / .4); background: oklch(62% 0.14 70 / .12); }
.pill.bad  { color: var(--bad);  border-color: oklch(52% 0.19 27 / .32); background: oklch(52% 0.19 27 / .09); }
.pill.gold { color: var(--maroon-900); background: var(--gold-400); border-color: var(--gold-600); }

/* ---------- forms ---------- */
label { display: block; font-size: var(--step--1); font-weight: 600; color: var(--ink-2);
  margin-bottom: .25rem; }
input, select, textarea {
  width: 100%; padding: .55rem .7rem; border: 1px solid var(--line); border-radius: var(--r);
  background: var(--surface); font: var(--step-0) var(--sans); color: var(--ink); }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--gold-600); outline-offset: -1px;
  border-color: var(--gold-600); }
textarea { min-height: 5rem; resize: vertical; }
.fields { display: grid; gap: .8rem; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); }
.fields .wide { grid-column: 1 / -1; }
fieldset { border: 1px solid var(--line); border-radius: var(--r); padding: 1rem 1.15rem;
  margin: 0 0 1.1rem; background: var(--surface); }
legend { font: 650 var(--step--1) var(--sans); text-transform: uppercase;
  letter-spacing: .08em; color: var(--maroon-700); padding: 0 .4rem; }

.btn { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--maroon-700);
  background: var(--maroon-700); color: #fff; padding: .5rem .95rem; border-radius: var(--r);
  font: 600 var(--step--1) var(--sans); cursor: pointer; text-decoration: none;
  transition: background var(--ease) .18s, transform var(--ease) .18s; }
.btn:hover { background: var(--maroon-500); color: #fff; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn.ghost { background: transparent; color: var(--maroon-700); border-color: var(--line); }
.btn.ghost:hover { background: var(--surface-2); color: var(--maroon-700); }
.btn.gold { background: var(--gold-600); border-color: var(--gold-600); color: var(--maroon-900); }
.btn.gold:hover { background: var(--gold-400); color: var(--maroon-900); }
.btn.tiny { padding: .25rem .55rem; font-size: .7rem; }
.btn[disabled] { opacity: .45; pointer-events: none; }

/* ---------- tables ---------- */
.tablewrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: var(--step--1); }
th { text-align: left; font-size: .68rem; text-transform: uppercase; letter-spacing: .09em;
  color: var(--ink-2); padding: .5rem .6rem; border-bottom: 2px solid var(--line);
  white-space: nowrap; }
td { padding: .6rem; border-bottom: 1px solid var(--line); vertical-align: middle; }
tbody tr { transition: background var(--ease) .15s; }
tbody tr:hover { background: var(--surface-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--mono); }
code, .mono { font-family: var(--mono); font-size: .85em; }

/* ---------- stat tiles ---------- */
.tiles { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line);
  border-radius: var(--r); overflow: hidden;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
.tile { background: var(--surface); padding: .9rem 1rem; }
.tile b { display: block; font: 600 var(--step-2)/1 var(--serif); color: var(--maroon-700);
  font-variant-numeric: tabular-nums; }
.tile span { font-size: .68rem; text-transform: uppercase; letter-spacing: .09em;
  color: var(--ink-2); }
.tile.alert b { color: var(--bad); }

/* ---------- flash ---------- */
.flash { padding: .7rem 1rem; border-radius: var(--r); margin-bottom: 1.25rem;
  font-size: var(--step--1); border: 1px solid; display: flex; gap: .5rem; }
.flash.ok  { background: oklch(52% 0.13 155 / .10); border-color: oklch(52% 0.13 155 / .35); color: oklch(35% 0.11 155); }
.flash.err { background: oklch(52% 0.19 27 / .09); border-color: oklch(52% 0.19 27 / .35); color: oklch(40% 0.17 27); }

/* ---------- misc ---------- */
.tabs { display: flex; gap: .3rem; border-bottom: 1px solid var(--line); margin-bottom: 1.4rem; }
.tabs a { padding: .55rem .95rem; text-decoration: none; font-size: var(--step--1);
  font-weight: 600; color: var(--ink-2); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs a[aria-current] { color: var(--maroon-700); border-bottom-color: var(--maroon-700); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.chip { text-decoration: none; font-size: var(--step--1); padding: .28rem .6rem;
  border: 1px solid var(--line); border-radius: 999px; background: var(--surface);
  color: var(--ink-2); transition: all var(--ease) .18s; }
.chip:hover { border-color: var(--maroon-700); color: var(--maroon-700); background: var(--surface); }
.chip b { color: var(--ink); font-variant-numeric: tabular-nums; }
.empty { padding: 2.5rem 1rem; text-align: center; color: var(--ink-2);
  border: 1px dashed var(--line); border-radius: var(--r); }
.rule { border: 0; border-top: 1px solid var(--line); margin: 1.75rem 0; }
.bar-track { height: 6px; background: var(--surface-2); border-radius: 3px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--maroon-700); }
footer.site { border-top: 1px solid var(--line); padding: 2rem 1.25rem; color: var(--ink-2);
  font-size: var(--step--1); }
footer.site .wrap { padding-bottom: 0; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  .shelf-card:hover .cover { transform: none; }
}