/* Recallio: Plus One Science - policy site. Editorial "lab notebook": paper, graph grid, serif display.
   Self-hosted fonts only: no third-party requests. */
@font-face { font-family: "Fraunces"; font-weight: 400 800; font-display: swap;
  src: url("assets/fonts/fraunces-latin.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 400; font-display: swap;
  src: url("assets/fonts/plex-sans-latin.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Sans"; font-weight: 600; font-display: swap;
  src: url("assets/fonts/plex-sans-600-latin.woff2") format("woff2"); }

:root {
  color-scheme: light;
  --paper: #f3f5ef;
  --card: #fbfcf8;
  --ink: #10231c;
  --muted: #47574f;
  --rule: #c9d3c6;
  --grid: #e3e9df;
  --accent: #b83a14;
  --link: #0b6b4a;
  --leaf: #dfeadb;
  --display: "Fraunces", Georgia, "Times New Roman", serif;
  --body: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", "Noto Sans Malayalam", "Kartika", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; color: var(--ink); font: 400 1.0625rem/1.7 var(--body); -webkit-text-size-adjust: 100%;
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 28px 28px;
}
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

/* header */
header.site { background: var(--paper); border-bottom: 1px solid var(--ink); position: sticky; top: 0; z-index: 10; }
.bar { max-width: 1120px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 10px 26px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font: 600 1.3rem/1 var(--display); }
.brand svg { width: 34px; height: 34px; display: block; }
.brand em { font-style: normal; font: 400 .78rem/1 var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); border-left: 1px solid var(--rule); padding-left: 10px; }
nav.links { display: flex; gap: 2px 18px; flex: 1 1 auto; overflow-x: auto; scrollbar-width: none; }
nav.links::-webkit-scrollbar { display: none; }
nav.links a { white-space: nowrap; color: var(--ink); text-decoration: none; font-size: .95rem; padding: 6px 0; border-bottom: 2px solid transparent; }
nav.links a:hover { border-color: var(--rule); color: var(--ink); }
nav.links a[aria-current="page"] { border-color: var(--accent); }
.lang { display: none; }
.js .lang { display: flex; gap: 4px; }
.lang button { font: 400 .85rem var(--body); background: none; border: 1px solid var(--ink); color: var(--ink); padding: 5px 12px; cursor: pointer; min-height: 34px; }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
@media (max-width: 760px) { nav.links { order: 3; flex-basis: 100%; } }

.js [lang="ml"] { display: none; }
.js.ml [lang="en"] { display: none; }
.js.ml [lang="ml"] { display: revert; }

/* buttons */
.btn { display: inline-block; text-decoration: none; cursor: pointer; font: 600 .98rem/1 var(--body); padding: 14px 22px;
  background: var(--ink); color: var(--paper); border: 1px solid var(--ink); }
.btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.soon { background: transparent; color: var(--ink); cursor: default; border-style: dashed; }
.btn.soon:hover { background: transparent; color: var(--ink); border-color: var(--ink); }

/* policy pages */
main { max-width: 800px; margin: 0 auto; padding: 44px 20px 72px; }
main.wide { max-width: 1120px; padding-top: 0; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; }
h1 { font-size: clamp(2.2rem, 5.5vw, 3.2rem); font-weight: 600; margin: .2em 0 .25em; letter-spacing: -.01em; }
h2 { font-size: 1.6rem; font-weight: 600; margin: 1.9em 0 .5em; padding-top: .6em; border-top: 1px solid var(--ink); }
h3 { font-size: 1.15rem; font-weight: 600; margin: 1.2em 0 .3em; }
p.meta { color: var(--muted); font-size: .92rem; letter-spacing: .02em; margin-top: 0; }
main ul, main ol { padding-left: 1.3em; }
main li { margin: .35em 0; }
.box { background: var(--card); border: 1px solid var(--ink); padding: 18px 22px; margin: 22px 0; position: relative; }
.box::before { content: ""; position: absolute; left: -1px; top: -1px; bottom: -1px; width: 5px; background: var(--accent); }
.box > :first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.box > :last-child { margin-bottom: 0; }
.box h2 { font-size: 1.3rem; }
.table-wrap { overflow-x: auto; margin: 18px 0; border: 1px solid var(--ink); background: var(--card); }
table { border-collapse: collapse; width: 100%; min-width: 520px; font-size: .98rem; }
th, td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--rule); }
th { background: var(--leaf); font: 600 .9rem var(--body); letter-spacing: .06em; text-transform: uppercase; }
tr:last-child td { border-bottom: 0; }

/* home */
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; padding: 64px 20px 40px; max-width: 1120px; margin: 0 auto; }
.kicker { font: 400 .8rem/1.4 var(--body); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin: 0 0 14px; }
.hero h1 { font-size: clamp(2.6rem, 6.4vw, 4.6rem); font-weight: 500; line-height: 1.02; margin: 0 0 20px; }
.hero h1 em { font-style: italic; color: var(--accent); }
.hero .lead { font-size: 1.18rem; color: var(--muted); max-width: 560px; margin: 0 0 26px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; padding-top: 40px; } }

.plot { background: var(--card); border: 1px solid var(--ink); padding: 14px; }
.plot svg { display: block; width: 100%; height: auto; }
.plot .axis { stroke: var(--ink); stroke-width: 1.5; }
.plot .tick { stroke: var(--rule); stroke-width: 1; }
.plot .curve { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 700; stroke-dashoffset: 700;
  animation: draw 4.5s ease-out .3s forwards; }
.plot .dot { fill: var(--ink); opacity: 0; animation: pop .4s ease 4.2s forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes pop { to { opacity: 1; } }
.plot .lbl { font: 600 12px var(--body); fill: var(--muted); }
.samplecard { border-top: 1px solid var(--ink); margin-top: 12px; padding-top: 12px; }
.samplecard .tag { font: 600 .72rem var(--body); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.samplecard .q { font: 600 1.25rem/1.25 var(--display); margin: 4px 0 0; }
.samplecard .a { font: 500 1.1rem var(--display); color: var(--link); margin: 6px 0 0; }
@media (prefers-reduced-motion: reduce) {
  .plot .curve { animation: none; stroke-dashoffset: 0; }
  .plot .dot { animation: none; opacity: 1; }
  html { scroll-behavior: auto; }
}

.section { max-width: 1120px; margin: 0 auto; padding: 52px 20px 0; }
.section > h2 { border-top: 1px solid var(--ink); padding-top: 14px; margin: 0 0 24px; font-size: clamp(1.7rem, 4vw, 2.3rem); font-weight: 600; }
.cols3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 28px; }
.item { border-top: 1px solid var(--rule); padding: 18px 0 26px; }
.item .n { font: 500 2.2rem/1 var(--display); color: var(--accent); }
.item h3 { margin: 8px 0 6px; font-size: 1.25rem; }
.item p { margin: 0; color: var(--muted); }
@media (max-width: 860px) { .cols3 { grid-template-columns: 1fr; } }

.steps { list-style: none; margin: 0; padding: 0; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 70px 1fr; gap: 12px; padding: 18px 0; border-top: 1px solid var(--rule); margin: 0; counter-increment: s; }
.steps li::before { content: counter(s, decimal-leading-zero); font: 500 2rem/1 var(--display); color: var(--accent); }
.steps h3 { margin: 0 0 4px; }
.steps p { margin: 0; color: var(--muted); }

.index { list-style: none; padding: 0; margin: 0; }
.index li { margin: 0; border-top: 1px solid var(--rule); }
.index a { display: flex; justify-content: space-between; gap: 12px; padding: 14px 4px; text-decoration: none; color: var(--ink); font: 500 1.15rem var(--display); }
.index a::after { content: "\2192"; color: var(--accent); }
.index a:hover { background: var(--leaf); color: var(--ink); }

.soon-band { max-width: 1120px; margin: 56px auto 0; padding: 0 20px; }
.soon-band .in { border: 1px solid var(--ink); background: var(--ink); color: var(--paper); padding: 32px 28px; }
.soon-band h2 { border: 0; padding: 0; margin: 0 0 6px; color: var(--paper); font-size: 1.7rem; }
.soon-band p { margin: 0; color: #cdd8d1; }
.soon-band a { color: #fff; }

footer.site { margin-top: 64px; border-top: 1px solid var(--ink); background: var(--card); padding: 34px 20px 24px; }
footer.site .cols { max-width: 1120px; margin: 0 auto; display: grid; gap: 28px; grid-template-columns: 1.6fr 1fr 1fr; }
footer.site a { color: var(--ink); text-decoration: none; }
footer.site a:hover { color: var(--accent); text-decoration: underline; }
footer.site h4 { font: 600 .78rem var(--body); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 8px; }
footer.site ul { list-style: none; margin: 0; padding: 0; }
footer.site li { margin: 5px 0; font-size: .97rem; }
footer.site .fbrand { display: flex; align-items: center; gap: 10px; font: 600 1.15rem var(--display); }
footer.site .fbrand svg { width: 30px; height: 30px; }
footer.site p { margin: 10px 0 0; font-size: .95rem; color: var(--muted); }
footer.site .fine { max-width: 1120px; margin: 26px auto 0; padding-top: 14px; border-top: 1px solid var(--rule); font-size: .85rem; color: var(--muted); }
footer.site .fine p { margin: 4px 0; }
@media (max-width: 760px) { footer.site .cols { grid-template-columns: 1fr; } }