/*
  Tuftlings — policy pages
  Shared stylesheet for /policies/ and every app's policy pages.
  No web fonts, no scripts. Light and dark themes follow the system setting.
*/

/* ---------- Tokens ---------- */

:root {
  color-scheme: light dark;

  --bg: #f7f5f0;
  --surface: #fffefa;
  --surface-alt: #eeebe3;
  --text: #212529;
  --muted: #5a6067;
  --border: #ddd8cc;
  --accent: #2b6656;
  --accent-soft: #e3eee8;
  --accent-line: #a9cbbd;
  --focus: #a14a00;

  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, "Noto Sans", "Noto Sans Devanagari", "Nirmala UI", sans-serif;
  --font-hindi: "Noto Sans Devanagari", "Kohinoor Devanagari", "Nirmala UI",
    "Mangal", system-ui, sans-serif;

  --measure: 68ch;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121514;
    --surface: #191d1c;
    --surface-alt: #202624;
    --text: #e6e3db;
    --muted: #a4aaa6;
    --border: #2f3633;
    --accent: #86c9b2;
    --accent-soft: #1a2824;
    --accent-line: #3d6a5c;
    --focus: #ffb15c;
  }
}

/* ---------- Base ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  overflow-wrap: break-word;
}

@media (min-width: 40em) {
  body {
    font-size: 1.0625rem;
  }
}

:lang(hi) {
  font-family: var(--font-hindi);
  line-height: 1.8;
}

:lang(hi) :lang(en) {
  font-family: var(--font-sans);
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

strong,
b {
  font-weight: 600;
}

h1,
h2,
h3 {
  line-height: 1.25;
  text-wrap: balance;
}

.wrap {
  width: 100%;
  max-width: 46rem;
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 40em) {
  .wrap {
    padding-inline: 1.5rem;
  }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -10rem;
  z-index: 10;
  padding: 0.5rem 0.875rem;
  background: var(--surface);
  color: var(--text);
  border: 2px solid var(--focus);
  border-radius: 6px;
}

.skip-link:focus {
  top: 1rem;
}

/* ---------- Site header ---------- */

.site-header {
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.25rem 1.5rem;
  padding-block: 0.75rem;
}

.wordmark {
  margin: 0;
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.15rem 0.5rem;
  line-height: 1.3;
}

.wordmark-name {
  color: var(--accent);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
}

/* A small leaf-like tuft before the name. Decorative only. */
.wordmark-name::before {
  content: "";
  display: inline-block;
  width: 0.62em;
  height: 0.62em;
  margin-right: 0.4em;
  border-radius: 70% 0 70% 0;
  background: currentColor;
  vertical-align: -0.02em;
}

.wordmark-by {
  color: var(--muted);
  font-size: 0.8125rem;
}

.header-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.125rem;
  font-size: 0.9375rem;
}

.header-nav a {
  display: inline-block;
  padding-block: 0.4rem;
  color: var(--muted);
  text-decoration: none;
}

.header-nav a:hover {
  color: var(--text);
  text-decoration: underline;
}

.header-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4em;
}

/* ---------- Main ---------- */

main {
  padding-block: 1.75rem 3rem;
}

.crumbs ol {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.4rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.crumbs li + li::before {
  content: "/";
  content: "/" / "";
  margin-right: 0.4rem;
  opacity: 0.6;
}

.doc-head {
  margin-bottom: 1.75rem;
}

h1 {
  margin: 0 0 0.875rem;
  font-size: clamp(1.75rem, 1.3rem + 2vw, 2.375rem);
  line-height: 1.15;
  letter-spacing: -0.015em;
}

.h1-kicker {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.doc-dates {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 1.5rem;
  margin: 0 0 1.25rem;
  color: var(--muted);
  font-size: 0.875rem;
}

.doc-dates-label {
  font-weight: 600;
}

.lead {
  max-width: var(--measure);
  margin: 0;
  font-size: 1.0625em;
}

.lead + .lead {
  margin-top: 0.75rem;
}

/* ---------- Hindi summary box ---------- */

.summary {
  margin: 0 0 1.75rem;
  padding: 1.125rem 1.25rem 1rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
}

.summary h2 {
  margin: 0 0 0.375rem;
  font-size: 1.125rem;
}

.summary ul {
  margin: 0;
  padding-left: 1.2rem;
}

.summary li {
  max-width: var(--measure);
}

.summary li + li {
  margin-top: 0.3rem;
}

.summary li::marker {
  color: var(--accent);
}

.summary-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
}

/* ---------- Table of contents ---------- */

.toc {
  margin: 0 0 0.5rem;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.toc h2 {
  margin: 0 0 0.375rem;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
}

.toc li {
  padding-block: 0.15rem;
  break-inside: avoid;
}

.toc li::marker {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.toc a {
  text-decoration: none;
}

.toc a:hover {
  text-decoration: underline;
}

@media (min-width: 40em) {
  .toc ol {
    columns: 2;
    column-gap: 2.5rem;
  }
}

/* ---------- Policy text ---------- */

.prose h2 {
  margin: 2.5rem 0 0.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border);
  font-size: 1.375rem;
  scroll-margin-top: 1rem;
}

.prose h3 {
  margin: 1.75rem 0 0.5rem;
  font-size: 1.0625rem;
  scroll-margin-top: 1rem;
}

.prose p,
.prose li,
.prose dd {
  max-width: var(--measure);
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose li + li {
  margin-top: 0.4rem;
}

.prose li::marker {
  color: var(--accent);
}

.ui {
  font-weight: 600;
}

.callout {
  margin: 1.25rem 0;
  padding: 1rem 1.25rem;
  background: var(--surface-alt);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.callout > :first-child {
  margin-top: 0;
}

.callout > :last-child {
  margin-bottom: 0;
}

.contact-list {
  margin: 1rem 0;
}

.contact-list dt {
  font-weight: 600;
}

.contact-list dd {
  margin: 0 0 0.75rem;
}

address {
  font-style: normal;
}

.to-top {
  margin-top: 2.5rem;
  font-size: 0.875rem;
}

/* ---------- Data table ---------- */

.data {
  width: 100%;
  margin: 1.25rem 0;
  border-collapse: collapse;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.data caption {
  padding-bottom: 0.5rem;
  font-weight: 600;
  text-align: left;
}

.data th,
.data td {
  padding: 0.6rem 0.75rem 0.6rem 0;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.data thead th {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom-width: 2px;
}

.data tbody th {
  font-weight: 600;
}

/* On narrow screens each row becomes a small card. */
@media (max-width: 39.99em) {
  .data thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    white-space: nowrap;
  }

  .data,
  .data tbody,
  .data tr,
  .data th,
  .data td {
    display: block;
  }

  .data tr {
    margin-bottom: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
  }

  .data tbody th {
    padding: 0 0 0.4rem;
    border: 0;
  }

  .data td {
    padding: 0.2rem 0;
    border: 0;
  }

  .data td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
}

/* ---------- Policies hub ---------- */

.section-label {
  margin: 2.25rem 0 0.75rem;
  color: var(--muted);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.app-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

@media (min-width: 40em) {
  .app-list {
    grid-template-columns: repeat(auto-fill, minmax(18rem, 1fr));
  }
}

.app-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  height: 100%;
  padding: 1.25rem 1.25rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
}

.app-card h3 {
  margin: 0;
  font-size: 1.25rem;
}

.app-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.doc-links {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.375rem;
}

.doc-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 2.75rem;
  padding: 0.5rem 0.875rem;
  background: var(--surface-alt);
  border-radius: 8px;
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
}

.doc-links a::after {
  content: "→";
  content: "→" / "";
  color: var(--accent);
}

.doc-links a:hover {
  background: var(--accent-soft);
}

.app-updated {
  margin: auto 0 0;
  padding-top: 0.75rem;
  color: var(--muted);
  font-size: 0.8125rem;
}

.hub-contact {
  margin-top: 2.5rem;
  max-width: var(--measure);
  color: var(--muted);
}

/* ---------- Footer ---------- */

.site-footer {
  padding-block: 2rem 2.5rem;
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-company {
  margin: 0 0 0.25rem;
  color: var(--text);
  font-weight: 600;
}

.footer-nav ul {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
}

.footer-nav a {
  display: inline-block;
  padding-block: 0.25rem;
}

.copyright {
  margin: 1rem 0 0;
}

/* ---------- Print ---------- */

@media print {
  :root {
    --bg: #fff;
    --surface: #fff;
    --surface-alt: #fff;
    --text: #000;
    --muted: #333;
    --border: #bbb;
    --accent: #000;
    --accent-soft: #fff;
    --accent-line: #bbb;
  }

  body {
    font-size: 11pt;
  }

  .skip-link,
  .header-nav,
  .crumbs,
  .toc,
  .to-top,
  .footer-nav {
    display: none;
  }

  .prose a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 0.85em;
  }

  .prose h2,
  .prose h3 {
    break-after: avoid;
  }

  .data tr,
  .summary,
  .callout {
    break-inside: avoid;
  }
}