/* Transit Desk — transit-manual / departure-board design system.
   One file, no webfonts, zero JS. Data is mono; prose is sans. */

:root {
  --ink:      #0E1F33;   /* deep aviation navy */
  --ink-2:    #0A1726;   /* darker panel */
  --paper:    #FBFAF7;   /* warm paper background */
  --card:     #FFFFFF;
  --amber:    #F4B43C;   /* signal accent (departure board) */
  --amber-d:  #C8881A;
  --teal:     #0E7C7B;   /* data + links */
  --teal-d:   #0A5E5D;
  --slate:    #5B6B7B;   /* secondary text */
  --line:     #E5E0D5;   /* hairline */
  --line-2:   #D8D2C4;
  --good:     #0E7C7B;
  --warn:     #B5601A;
  --ok-bg:    #E9F4F2;
  --warn-bg:  #FBEEDD;
  --info-bg:  #EEF1F6;

  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --w: 60rem;
  --r: 4px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  /* subtle paper texture via layered gradients, very low contrast */
  background-image:
    radial-gradient(circle at 100% 0, rgba(14,124,123,.04), transparent 40%),
    radial-gradient(circle at 0 100%, rgba(244,180,60,.05), transparent 35%);
  background-attachment: fixed;
}

.wrap { width: 100%; max-width: var(--w); margin-inline: auto; padding-inline: 1.25rem; }

a { color: var(--teal-d); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--ink); }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.015em; font-weight: 700; }
h1 { font-size: clamp(1.7rem, 4.5vw, 2.6rem); margin: 0; }
h2 { font-size: 1.3rem; margin: 2.25rem 0 .75rem; }
h3 { font-size: 1.05rem; margin: 0 0 .35rem; }

.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.muted { color: var(--slate); font-weight: 400; }
.hi { color: var(--warn); font-weight: 600; }
.lo { color: var(--teal-d); font-weight: 600; }

/* ---- Skip link ---- */
.skip {
  position: absolute; left: -999px; top: 0; z-index: 10;
  background: var(--ink); color: #fff; padding: .6rem 1rem; border-radius: 0 0 var(--r) 0;
}
.skip:focus { left: 0; color: #fff; }

/* ---- Header ---- */
.site { background: var(--ink); color: #fff; border-bottom: 3px solid var(--amber); }
.site__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 3.5rem; }
.brand { display: inline-flex; align-items: baseline; gap: .5rem; color: #fff; text-decoration: none; font-weight: 800; letter-spacing: -0.02em; font-size: 1.18rem; }
.brand:hover { color: #fff; }
.brand__mark { color: var(--amber); font-family: var(--mono); transform: translateY(1px); }
.brand__name { white-space: nowrap; }

.nav summary {
  list-style: none; cursor: pointer; color: #cdd7e3; font-size: .82rem;
  text-transform: uppercase; letter-spacing: .12em; padding: .4rem .2rem;
}
.nav summary::-webkit-details-marker { display: none; }
.nav summary:hover { color: #fff; }
.nav nav ul { list-style: none; margin: .5rem 0 .75rem; padding: 0; display: grid; gap: .1rem; }
.nav nav a { display: block; color: #cdd7e3; text-decoration: none; padding: .5rem .2rem; border-bottom: 1px solid rgba(255,255,255,.08); }
.nav nav a:hover { color: var(--amber); }

@media (min-width: 46rem) {
  .nav summary { display: none; }
  /* Override the UA rule that hides <details> contents while closed. */
  .nav > nav { display: block !important; }
  .nav nav ul { display: flex; gap: 1.25rem; margin: 0; }
  .nav nav a { border: 0; padding: .2rem 0; color: #cdd7e3; font-size: .95rem; }
}

/* ---- Breadcrumbs ---- */
.crumbs { background: #fff; border-bottom: 1px solid var(--line); font-size: .82rem; }
.crumbs ol { list-style: none; display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: .6rem 0; color: var(--slate); }
.crumbs li + li::before { content: "/"; color: var(--line-2); margin-right: .35rem; }
.crumbs a { color: var(--slate); text-decoration: none; }
.crumbs a:hover { color: var(--teal-d); }
.crumbs [aria-current] { color: var(--ink); }

/* ---- Lede / headings block ---- */
main { padding-bottom: 4rem; }
.lede { padding: 2rem 0 .5rem; }
.eyebrow {
  font-family: var(--mono); font-size: .74rem; text-transform: uppercase;
  letter-spacing: .2em; color: var(--teal-d); margin: 0 0 .6rem;
}
.lede h1 { max-width: 28ch; }

/* ---- Prose ---- */
.prose { max-width: 64ch; }
.prose p { margin: .9rem 0; }
.prose ul { padding-left: 1.1rem; }
.prose li { margin: .35rem 0; }

/* ---- Signature: boarding-pass / reference card ---- */
.card {
  position: relative; display: flex; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: 0 1px 0 var(--line), 0 10px 30px -22px rgba(14,31,51,.5);
  margin: 1.5rem 0; overflow: hidden;
}
.card__edge {
  flex: 0 0 14px; background:
    repeating-linear-gradient(180deg, var(--amber) 0 10px, var(--amber-d) 10px 12px);
}
.card__edge::after {
  content: ""; position: absolute; top: 0; bottom: 0; left: 14px;
  border-left: 2px dashed var(--line-2);
}
.card__body { padding: 1.1rem 1.25rem 1.25rem 1.5rem; flex: 1 1 auto; min-width: 0; }
.card__eyebrow {
  font-family: var(--mono); font-size: .72rem; text-transform: uppercase;
  letter-spacing: .18em; color: var(--slate); margin: 0 0 .25rem;
}
.card__title { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.02em; }
.route { display: inline-flex; align-items: center; gap: .55rem; flex-wrap: wrap; }
.arrow { color: var(--amber-d); font-family: var(--mono); }

.chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr)); gap: .1rem 1.25rem; margin: 1rem 0 0; }
.chip { display: flex; flex-direction: column; padding: .55rem 0; border-top: 1px solid var(--line); }
.chip dt { font-size: .73rem; text-transform: uppercase; letter-spacing: .1em; color: var(--slate); margin: 0; }
.chip dd { margin: .15rem 0 0; font-weight: 600; }
.chip dd.mono { font-weight: 600; }

/* plug-letter tags */
.tag {
  display: inline-block; min-width: 1.5rem; text-align: center;
  font-family: var(--mono); font-weight: 700; font-size: .82rem;
  background: var(--ink); color: var(--amber); border-radius: 3px;
  padding: .05rem .35rem; margin-right: .15rem;
}

/* ---- Verdict (answer-first) ---- */
.verdict {
  display: grid; gap: .5rem; margin: 1.5rem 0;
  padding: 1.1rem 1.25rem; border-radius: var(--r);
  border: 1px solid var(--line); border-left: 5px solid var(--slate);
  background: var(--info-bg); font-size: 1.18rem; line-height: 1.45;
}
.verdict--yes { border-left-color: var(--good); background: var(--ok-bg); }
.verdict--no  { border-left-color: var(--amber-d); background: var(--warn-bg); }
.verdict--info{ border-left-color: var(--teal); background: var(--info-bg); }
.verdict__label {
  font-family: var(--mono); font-size: .7rem; text-transform: uppercase;
  letter-spacing: .18em; color: var(--slate);
}
.verdict__body { color: var(--ink); }
.verdict strong { font-weight: 800; }

/* ---- Data table ---- */
.data { width: 100%; border-collapse: collapse; margin: 1rem 0 1.25rem; font-size: .98rem; }
.data caption { text-align: left; color: var(--slate); font-size: .82rem; padding-bottom: .4rem; }
.data th, .data td { text-align: left; padding: .6rem .75rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.data th[scope=row] { font-weight: 600; color: var(--ink); width: 40%; }
.data tr:hover td, .data tr:hover th { background: #fff; }
.data td.mono { color: var(--ink); }

/* ---- CTA (affiliate) ---- */
.cta {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: .85rem; margin: 1.5rem 0; padding: 1rem 1.25rem;
  background: var(--ink); color: #fff; border-radius: var(--r);
  border: 1px solid var(--ink-2);
}
.cta__txt { display: grid; gap: .15rem; }
.cta__txt strong { font-size: 1.02rem; }
.cta__txt span { color: #c3cdd9; font-size: .92rem; }
.cta__btn {
  display: inline-flex; align-items: center; gap: .4rem; white-space: nowrap;
  background: var(--amber); color: var(--ink-2); font-weight: 700;
  text-decoration: none; padding: .6rem 1.05rem; border-radius: var(--r);
}
.cta__btn:hover { background: #fff; color: var(--ink-2); }

/* ---- FAQ ---- */
.faq__list { display: grid; gap: .1rem; margin-top: .5rem; max-width: 64ch; }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__item summary {
  cursor: pointer; list-style: none; padding: .85rem 1.75rem .85rem 0; position: relative;
  font-weight: 600;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; position: absolute; right: .25rem; top: .8rem;
  font-family: var(--mono); color: var(--teal-d); font-size: 1.2rem; line-height: 1;
}
.faq__item[open] summary::after { content: "−"; }
.faq__item p { margin: 0 0 1rem; color: #32414f; max-width: none; }

/* ---- Related links ---- */
.related { margin: 2.5rem 0 0; display: grid; gap: 1.5rem; }
@media (min-width: 40rem) { .related { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); } }
.related__group h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .12em; color: var(--slate); margin: 0 0 .6rem; }
.related__group ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .35rem; }
.related__group a { color: var(--teal-d); text-decoration: none; }
.related__group a:hover { color: var(--ink); text-decoration: underline; }

.updated { font-family: var(--mono); font-size: .78rem; color: var(--slate); margin: 1rem 0 0; }

/* ---- Home hero / departure board ---- */
.hero { margin: 1rem 0 1.5rem; }
.hero__eyebrow {
  font-family: var(--mono); font-size: .75rem; text-transform: uppercase;
  letter-spacing: .2em; color: var(--teal-d); margin: 0 0 .5rem;
}
.hero__lead { font-size: clamp(1.05rem, 2.4vw, 1.3rem); max-width: 52ch; color: #28384a; margin: 0 0 1.5rem; }

.board {
  background: var(--ink); border-radius: 6px; overflow: hidden;
  border: 1px solid var(--ink-2); box-shadow: 0 18px 40px -28px rgba(14,31,51,.8);
}
.board__row {
  display: grid; grid-template-columns: 1.75rem 1fr auto 1rem; align-items: center;
  gap: .75rem; padding: .7rem 1rem; text-decoration: none; color: #eaf0f6;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.board__row:last-child { border-bottom: 0; }
.board__row:hover { background: #14283f; color: #fff; }
.board__flag { font-size: 1.15rem; }
.board__name { font-weight: 600; letter-spacing: -0.01em; }
.board__meta { color: var(--amber); font-size: .85rem; }
.board__go { color: var(--amber); font-family: var(--mono); justify-self: end; }

/* ---- Category grid ---- */
.cats__grid { display: grid; gap: .9rem; grid-template-columns: 1fr; }
@media (min-width: 38rem) { .cats__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 56rem) { .cats__grid { grid-template-columns: repeat(3, 1fr); } }
.cat {
  display: block; text-decoration: none; color: var(--ink);
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 1rem 1.1rem; transition: border-color .15s, transform .15s;
}
.cat:hover { border-color: var(--teal); transform: translateY(-2px); color: var(--ink); }
.cat h3 { color: var(--ink); }
.cat p { margin: 0; color: var(--slate); font-size: .92rem; }

/* ---- Country index grid ---- */
.grid-list {
  list-style: none; margin: 1rem 0 0; padding: 0;
  display: grid; gap: .15rem .75rem; grid-template-columns: 1fr;
}
@media (min-width: 34rem) { .grid-list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 52rem) { .grid-list { grid-template-columns: repeat(3, 1fr); } }
.grid-list a { display: flex; align-items: center; gap: .5rem; text-decoration: none; color: var(--ink); padding: .4rem .3rem; border-bottom: 1px solid var(--line); }
.grid-list a:hover { color: var(--teal-d); }
.flag { font-size: 1.05rem; }

/* ---- Footer ---- */
.site-foot { background: var(--ink-2); color: #b9c4d1; margin-top: 3rem; padding: 2rem 0; }
.site-foot__inner { display: grid; gap: .6rem; }
.site-foot__brand { font-weight: 800; color: #fff; margin: 0; }
.site-foot__brand span { color: var(--amber); font-family: var(--mono); }
.site-foot__note { margin: 0; font-size: .88rem; max-width: 70ch; }
.site-foot__nav { display: flex; flex-wrap: wrap; gap: 1.1rem; margin-top: .4rem; }
.site-foot__nav a { color: var(--amber); text-decoration: none; font-size: .9rem; }
.site-foot__nav a:hover { color: #fff; }

/* ---- A11y: focus + motion ---- */
:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; border-radius: 2px; }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

/* ---- Header tools + language switcher ---- */
.site__tools { display: flex; align-items: center; gap: 1.1rem; }
.langbar { position: relative; }
.langbar summary {
  list-style: none; cursor: pointer; color: #cdd7e3; font-size: .82rem;
  text-transform: uppercase; letter-spacing: .08em; padding: .4rem .2rem; white-space: nowrap;
}
.langbar summary::-webkit-details-marker { display: none; }
.langbar summary:hover { color: #fff; }
.langbar nav {
  position: absolute; right: 0; top: calc(100% + .3rem); z-index: 40;
  background: var(--ink); border: 1px solid rgba(255,255,255,.16); border-radius: .5rem;
  padding: .35rem; min-width: 9.5rem; box-shadow: 0 10px 28px rgba(0,0,0,.4);
}
.langbar nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .05rem; }
.langbar nav a {
  display: block; color: #cdd7e3; text-decoration: none; padding: .4rem .6rem;
  border-radius: .35rem; font-size: .92rem; border: 0;
}
.langbar nav a:hover { color: var(--amber); background: rgba(255,255,255,.06); }
.langbar nav a[aria-current="true"] { color: var(--amber); font-weight: 700; }

/* ---- Right-to-left (Arabic) ---- */
[dir=rtl] .langbar nav { right: auto; left: 0; }
[dir=rtl] .crumbs li + li::before { margin-right: 0; margin-left: .35rem; }
[dir=rtl] .prose ul { padding-left: 0; padding-right: 1.1rem; }
[dir=rtl] .data caption,
[dir=rtl] .data th,
[dir=rtl] .data td { text-align: right; }
[dir=rtl] .verdict { border-left: 1px solid var(--line); border-right: 5px solid var(--slate); }
[dir=rtl] .verdict--yes { border-right-color: var(--good); }
[dir=rtl] .verdict--no  { border-right-color: var(--amber-d); }
[dir=rtl] .verdict--info{ border-right-color: var(--teal); }
[dir=rtl] .card__edge::after { left: auto; right: 14px; border-left: 0; border-right: 2px dashed var(--line-2); }
[dir=rtl] .card__body { padding: 1.1rem 1.5rem 1.25rem 1.25rem; }
[dir=rtl] .chip { margin-right: 0; margin-left: .15rem; }
[dir=rtl] .faq__item summary::after { right: auto; left: .25rem; }
[dir=rtl] .board__go, [dir=rtl] .brand__mark { transform: scaleX(-1); }