/* Dubai Storage Observatory — research-desk styling
   Palette: ink #0F2540 · slate #33415C · muted #5B6B86 · surface #F4F6FA
   hairline #D7DEE8 · amber #E8A30C · low-bar slate #9AA7BC */

:root {
  --ink: #0F2540;
  --slate: #33415C;
  --muted: #5B6B86;
  --surface: #F4F6FA;
  --hair: #D7DEE8;
  --amber: #E8A30C;
  --amber-tint: #E8A30C1F;
  --low: #9AA7BC;
  --white: #FFFFFF;
  --measure: 70ch;
  --maxw: 1100px;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

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

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--slate);
  background: var(--white);
  text-rendering: optimizeLegibility;
}

.tnum { font-variant-numeric: tabular-nums; }

/* ---------- Skip link ---------- */
.skip {
  position: absolute; left: -999px; top: 0;
  background: var(--ink); color: #fff; padding: .6rem 1rem; z-index: 200;
}
.skip:focus { left: .5rem; top: .5rem; }

/* ---------- Header / nav ---------- */
.site-header {
  background: var(--ink);
  color: #fff;
  position: sticky; top: 0; z-index: 100;
  border-bottom: 1px solid #1c3a5c;
}
.bar {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: .7rem 1.1rem;
}
.wordmark {
  color: #fff; text-decoration: none;
  font-weight: 700; letter-spacing: .04em; font-size: .82rem;
  text-transform: uppercase; line-height: 1.2;
  display: flex; align-items: baseline; gap: .5rem;
}
.wordmark .dot { color: var(--amber); }
.wordmark b { font-weight: 800; }
.wordmark span { color: #9fb0c6; font-weight: 600; }

.nav-toggle { display: none; }
.nav-btn {
  display: none;
  background: transparent; border: 1px solid #35506f; color: #fff;
  font-size: .8rem; padding: .4rem .7rem; border-radius: 5px; cursor: pointer;
  letter-spacing: .04em; text-transform: uppercase;
}
nav.primary ul {
  list-style: none; margin: 0; padding: 0;
  display: flex; gap: .25rem; flex-wrap: wrap;
}
nav.primary a {
  color: #d6dfeb; text-decoration: none;
  font-size: .86rem; padding: .35rem .6rem; border-radius: 5px;
  display: block;
}
nav.primary a:hover, nav.primary a:focus { color: #fff; background: #1b3a5c; }
nav.primary a[aria-current="page"] { color: var(--amber); }

/* ---------- Layout ---------- */
main { display: block; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.1rem; }
section { margin: 2.6rem 0; }
.prose { max-width: var(--measure); }
.prose p, .prose li { color: var(--slate); }
.grid-aside {
  display: grid; gap: 2rem;
  grid-template-columns: 1fr;
}

/* ---------- Breadcrumb ---------- */
.crumbs {
  font-size: .8rem; color: var(--muted);
  padding: .9rem 0 .2rem;
}
.crumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .25rem; }
.crumbs li::after { content: "/"; margin-left: .4rem; color: var(--hair); }
.crumbs li:last-child::after { content: ""; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--amber); text-decoration: underline; }
.crumbs [aria-current="page"] { color: var(--slate); }

/* ---------- Eyebrow / headings ---------- */
.eyebrow {
  text-transform: uppercase; letter-spacing: .08em;
  font-size: .72rem; font-weight: 700; color: var(--amber);
  margin: 0 0 .5rem;
}
h1, h2, h3, h4 { color: var(--ink); letter-spacing: -0.01em; line-height: 1.18; }
h1 { font-size: clamp(1.7rem, 4.4vw, 2.7rem); margin: .2rem 0 .6rem; font-weight: 800; }
h2 { font-size: clamp(1.3rem, 3vw, 1.7rem); margin: 2.2rem 0 .8rem; font-weight: 700; padding-top: .2rem; }
h3 { font-size: 1.12rem; margin: 1.4rem 0 .5rem; font-weight: 700; }
.lede { font-size: 1.12rem; color: var(--slate); max-width: var(--measure); }
a { color: #0E5C99; }
a:hover { color: var(--amber); }

/* ---------- Hero "report cover" ---------- */
.hero {
  background: var(--ink);
  color: #eaf0f7;
  border-bottom: 3px solid var(--amber);
}
.hero .wrap { padding-top: 1.6rem; padding-bottom: 2.2rem; }
.hero .eyebrow { color: var(--amber); }
.hero h1 { color: #fff; max-width: 18ch; }
.hero .finding { color: #c7d3e2; max-width: 60ch; font-size: 1.06rem; }
.hero .finding strong { color: #fff; }
.cover {
  display: grid; gap: 1.6rem;
  grid-template-columns: 1fr;
  align-items: center;
}
.score-cover {
  background: #14304f; border: 1px solid #29486b; border-radius: 10px;
  padding: 1.1rem 1.3rem; display: inline-flex; flex-direction: column; gap: .15rem;
  min-width: 180px;
}
.score-cover .n {
  font-size: 3.2rem; font-weight: 800; color: var(--amber); line-height: 1;
  font-variant-numeric: tabular-nums;
}
.score-cover .of { font-size: 1rem; color: #9fb0c6; font-weight: 600; }
.score-cover .who { font-size: .95rem; color: #eaf0f7; font-weight: 700; margin-top: .35rem; }
.score-cover .lbl { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: #9fb0c6; }

/* ---------- Key-stat tiles ---------- */
.tiles {
  display: grid; gap: .9rem;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  margin-top: 1.4rem;
}
.tile {
  background: #14304f; border: 1px solid #29486b; border-radius: 8px;
  padding: .9rem 1rem;
}
.hero .tile .n { color: var(--amber); }
.tile .n { font-size: 1.7rem; font-weight: 800; color: var(--ink); line-height: 1.1; font-variant-numeric: tabular-nums; }
.tile .l { font-size: .78rem; color: #9fb0c6; margin-top: .2rem; }
/* light tiles (in body) */
.tiles.light .tile { background: var(--surface); border-color: var(--hair); }
.tiles.light .tile .n { color: var(--amber); }
.tiles.light .tile .l { color: var(--muted); }

/* ---------- Bar chart ---------- */
figure { margin: 1.2rem 0; }
figcaption { font-size: .8rem; color: var(--muted); margin-top: .6rem; }
.chart { display: flex; flex-direction: column; gap: .45rem; }
.barrow {
  display: grid; align-items: center; gap: .7rem;
  grid-template-columns: minmax(8.5rem, 13rem) 1fr 2.6rem;
}
.barrow .lab {
  font-size: .82rem; color: var(--slate); white-space: nowrap;
  overflow: hidden; text-overflow: ellipsis;
}
.barrow .lab b { color: var(--ink); font-weight: 700; }
.barrow .lab .rk { color: var(--muted); font-variant-numeric: tabular-nums; }
.track {
  background: var(--surface); border: 1px solid var(--hair);
  border-radius: 3px; height: 1.15rem; overflow: hidden;
}
.fill { display: block; height: 100%; background: var(--low); border-radius: 2px 0 0 2px; }
.fill.lead { background: var(--amber); }
.barrow .val { font-size: .84rem; font-weight: 700; color: var(--ink); text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Index table ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--hair); border-radius: 8px; }
table.idx { border-collapse: collapse; width: 100%; min-width: 620px; font-size: .9rem; }
table.data { border-collapse: collapse; width: 100%; min-width: 1040px; font-size: .85rem; }
table caption { text-align: left; font-size: .82rem; color: var(--muted); padding: .7rem .9rem; caption-side: top; }
.idx th, .idx td, .data th, .data td { padding: .6rem .7rem; text-align: left; border-bottom: 1px solid var(--hair); }
.idx thead th, .data thead th {
  background: var(--ink); color: #eaf0f7; font-weight: 600; font-size: .78rem;
  text-transform: uppercase; letter-spacing: .03em; position: sticky; top: 0; white-space: nowrap;
}
.data thead th { position: static; }
.idx td.num, .idx th.num, .data td.num, .data th.num { text-align: right; font-variant-numeric: tabular-nums; }
.idx tbody tr:nth-child(even), .data tbody tr:nth-child(even) { background: var(--surface); }
.idx tbody tr.leader, .data tbody tr.leader { background: var(--amber-tint); }
.idx tbody tr.leader td { border-bottom-color: #e6c98f; }
.rank-b {
  display: inline-flex; align-items: center; justify-content: center;
  width: 1.7rem; height: 1.7rem; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--hair);
  font-weight: 700; font-size: .82rem; color: var(--ink); font-variant-numeric: tabular-nums;
}
tr.leader .rank-b { background: var(--amber); border-color: var(--amber); color: #3a2a00; }
.co { display: flex; align-items: center; gap: .6rem; }
.co img { display: block; object-fit: contain; }
.co .nm { font-weight: 700; color: var(--ink); }
.co .nm a { color: var(--ink); text-decoration: none; }
.co .nm a:hover { color: var(--amber); text-decoration: underline; }
.comp { font-weight: 800; font-size: 1.05rem; color: var(--ink); font-variant-numeric: tabular-nums; }
tr.leader .comp { color: #9a6c04; }

/* score chips */
.chip {
  display: inline-block; font-size: .76rem; font-weight: 700;
  padding: .12rem .5rem; border-radius: 999px;
  background: var(--surface); border: 1px solid var(--hair); color: var(--slate);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.chip.hi { background: var(--amber); border-color: var(--amber); color: #3a2a00; }

/* ---------- Ranking cards (mobile fallback / lists) ---------- */
.cards { display: grid; gap: 1rem; grid-template-columns: 1fr; margin-top: 1rem; }
.card {
  border: 1px solid var(--hair); border-radius: 10px; padding: 1rem 1.1rem;
  background: #fff; position: relative;
}
.card.leader { border-color: var(--amber); box-shadow: 0 0 0 2px var(--amber-tint); }
.ribbon {
  position: absolute; top: -.7rem; right: .9rem;
  background: var(--amber); color: #3a2a00; font-size: .68rem; font-weight: 800;
  letter-spacing: .06em; text-transform: uppercase; padding: .22rem .55rem; border-radius: 4px;
}
.card .head { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; }
.card .head .rank-b { flex: none; }
.card .logo-box {
  width: 64px; height: 48px; display: flex; align-items: center; justify-content: center;
  background: var(--surface); border: 1px solid var(--hair); border-radius: 6px; flex: none;
}
.card .logo-box img { display: block; object-fit: contain; }
.card .title { font-weight: 800; color: var(--ink); font-size: 1.02rem; }
.card .title a { color: var(--ink); text-decoration: none; }
.card .title a:hover { color: var(--amber); }
.card .meta { font-size: .82rem; color: var(--muted); }
.card .scoreblock { margin-left: auto; text-align: right; }
.card .scoreblock .n { font-size: 1.7rem; font-weight: 800; color: var(--amber); line-height: 1; font-variant-numeric: tabular-nums; }
.card .scoreblock .l { font-size: .68rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.card .verdict { margin: .7rem 0 0; font-size: .92rem; color: var(--slate); }
.card .row2 { display: flex; flex-wrap: wrap; gap: .4rem .9rem; margin-top: .6rem; font-size: .82rem; color: var(--muted); }
.card .row2 b { color: var(--ink); font-weight: 700; }
.card .chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-top: .7rem; }

/* ---------- Call-out panel ---------- */
.callout {
  background: var(--surface); border: 1px solid var(--hair);
  border-left: 4px solid var(--amber); border-radius: 6px;
  padding: 1rem 1.2rem; margin: 1.4rem 0;
}
.callout p:first-child { margin-top: 0; }
.callout p:last-child { margin-bottom: 0; }
.callout.tight { font-size: .92rem; }
.answer {
  border-left: 4px solid var(--amber); background: var(--amber-tint);
  padding: .9rem 1.1rem; border-radius: 0 6px 6px 0; margin: .4rem 0 1.2rem;
  font-size: 1.04rem; color: var(--ink);
}
.answer strong { color: var(--ink); }

/* ---------- Generic data tables in prose ---------- */
table.simple { border-collapse: collapse; width: 100%; font-size: .9rem; margin: 1rem 0; }
table.simple caption { caption-side: top; }
table.simple th, table.simple td { padding: .5rem .7rem; border-bottom: 1px solid var(--hair); text-align: left; }
table.simple thead th { background: var(--surface); color: var(--ink); font-size: .8rem; text-transform: uppercase; letter-spacing: .02em; }
table.simple td.num, table.simple th.num { text-align: right; font-variant-numeric: tabular-nums; }
table.simple tbody tr:nth-child(even) { background: #fafbfd; }
table.simple tr.leader { background: var(--amber-tint); }
.wrapscroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* weight bar inside methodology table */
.wbar { display: inline-block; height: .6rem; background: var(--amber); border-radius: 2px; vertical-align: middle; margin-left: .5rem; min-width: 2px; }

/* ---------- FAQ ---------- */
.faq details {
  border-bottom: 1px solid var(--hair);
  padding: .2rem 0;
}
.faq summary {
  cursor: pointer; list-style: none; padding: .85rem .2rem .85rem 1.8rem;
  font-weight: 700; color: var(--ink); position: relative; font-size: 1.02rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+"; position: absolute; left: .4rem; top: .8rem;
  color: var(--amber); font-weight: 800; font-size: 1.1rem;
}
.faq details[open] summary::before { content: "\2212"; }
.faq .ans { padding: 0 .2rem 1rem 1.8rem; color: var(--slate); }
.faq .ans p:first-child { margin-top: 0; }

/* ---------- Footnotes / sources ---------- */
sup.fn a { color: var(--amber); text-decoration: none; font-weight: 700; }
.sources { font-size: .86rem; color: var(--muted); }
.sources ol { padding-left: 1.3rem; }
.sources li { margin: .3rem 0; }

/* ---------- Aside ---------- */
aside.rail { font-size: .9rem; }
.panel {
  border: 1px solid var(--hair); border-radius: 8px; padding: 1rem 1.1rem;
  background: #fff; margin-bottom: 1.2rem;
}
.panel h3 { margin-top: 0; font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.panel ul { margin: 0; padding-left: 1.1rem; }
.panel li { margin: .35rem 0; }

/* ---------- Utility ---------- */
.lead-link { font-weight: 700; }
.muted { color: var(--muted); }
.center { text-align: center; }
ul.ticks { list-style: none; padding-left: 0; }
ul.ticks li { position: relative; padding-left: 1.4rem; margin: .45rem 0; }
ul.ticks li::before { content: "\2713"; position: absolute; left: 0; color: var(--amber); font-weight: 800; }
.tag { display:inline-block; font-size:.72rem; letter-spacing:.05em; text-transform:uppercase; color:var(--muted); border:1px solid var(--hair); border-radius:4px; padding:.1rem .4rem; }

/* ---------- Footer ---------- */
footer.site-footer {
  background: var(--ink); color: #b8c5d6; margin-top: 3rem;
  font-size: .84rem; border-top: 3px solid var(--amber);
}
footer.site-footer .wrap { padding-top: 1.8rem; padding-bottom: 1.8rem; }
footer.site-footer a { color: #d6dfeb; }
footer.site-footer .fnav { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
footer.site-footer .fnav a { text-decoration: none; }
footer.site-footer .fnav a:hover { color: var(--amber); }
footer.site-footer .disc { max-width: 70ch; line-height: 1.55; }
footer.site-footer .disc p { margin: .4rem 0; }
footer.site-footer .cc { margin-top: 1rem; color: #8295ad; }

/* ---------- Focus ---------- */
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--amber); outline-offset: 2px; border-radius: 3px;
}

/* ---------- Responsive ---------- */
@media (min-width: 720px) {
  .cover { grid-template-columns: 1fr auto; }
  .grid-aside { grid-template-columns: minmax(0, 1fr) 18rem; align-items: start; }
  aside.rail { position: sticky; top: 4.2rem; }
}
@media (min-width: 900px) {
  table.idx thead th { position: sticky; top: 3.4rem; }
}

/* ---------- Mobile nav (CSS-only toggle) ---------- */
@media (max-width: 719px) {
  .nav-btn { display: inline-block; }
  nav.primary {
    display: none; width: 100%;
    order: 3;
  }
  .nav-toggle:checked ~ nav.primary { display: block; }
  nav.primary ul { flex-direction: column; gap: .1rem; padding-bottom: .5rem; }
  nav.primary a { padding: .6rem .4rem; border-bottom: 1px solid #1b3a5c; border-radius: 0; }
  .bar { flex-wrap: wrap; }
}

@media print {
  .site-header, footer.site-footer, .nav-btn { display: none; }
  body { color: #000; }
}