/* Quizna: the app's own palette and fonts. Logical properties only, so right-to-left pages mirror by themselves.
   One motif (the gold question mark), flat colour fields, no gradients, no shadows, no hairlines. */

@font-face { font-family: "Readex Pro"; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/ReadexPro-Regular.ttf) format("truetype"); }
@font-face { font-family: "Readex Pro"; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/ReadexPro-SemiBold.ttf) format("truetype"); }
@font-face { font-family: "Readex Pro"; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/ReadexPro-Bold.ttf) format("truetype"); }
@font-face { font-family: "IBM Plex Sans Arabic"; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/IBMPlexSansArabic-Regular.ttf) format("truetype"); }
@font-face { font-family: "IBM Plex Sans Arabic"; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/IBMPlexSansArabic-SemiBold.ttf) format("truetype"); }
@font-face { font-family: "IBM Plex Sans Arabic"; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/IBMPlexSansArabic-Bold.ttf) format("truetype"); }

:root {
  color-scheme: dark;

  --ground: #0a100d;
  --card: #101a15;
  --field: #16241e;
  --ink: #f6f4ea;
  --muted: #acb29d;
  --green: #1a7a50;
  --deep: #0f4a33;
  --gold: #f5c03a;
  --gold-ink: #1b1608;
  --danger: #e65a50;
  --edge: #6b786f;

  --margin: clamp(1rem, 4vw, 2.5rem);
  --section: clamp(3.5rem, 9vw, 7rem);

  --t-s: 1.0625rem;
  --t-m: clamp(1.125rem, 1.6vw, 1.375rem);
  --t-l: clamp(1.375rem, 3vw, 2.25rem);
  --t-xl: clamp(1.75rem, 4.2vw, 3.75rem);

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

html { background: var(--ground); scroll-padding-block-start: 1.5rem; scrollbar-color: var(--edge) var(--ground); }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  font-family: "Readex Pro", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--t-s);
  line-height: 1.6;
  color: var(--ink);
  background: var(--ground);
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}

:lang(ar) {
  font-family: "IBM Plex Sans Arabic", system-ui, -apple-system, "Segoe UI", Tahoma, sans-serif;
  letter-spacing: 0;
}
:lang(ar) body { line-height: 1.8; }

::selection { background: var(--gold); color: var(--gold-ink); }
input, textarea, select { caret-color: var(--gold); accent-color: var(--gold); }
::placeholder { color: var(--muted); opacity: 1; } /* the browser grey (#757575) is only 3.5:1 on the field */

img { display: block; max-inline-size: 100%; block-size: auto; }
a { color: inherit; text-underline-offset: 0.3em; }
h1, h2, h3, p, address, ul, ol { margin: 0; }
p, li { text-wrap: pretty; } /* no single word alone on the last line, in any of the four languages */
address { font-style: normal; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

.wrap { inline-size: 100%; max-inline-size: 76rem; margin-inline: auto; padding-inline: var(--margin); }

.skip {
  position: absolute; inset-inline-start: var(--margin); inset-block-start: -5rem; z-index: 10;
  padding: 0.75rem 1rem; background: var(--gold); color: var(--gold-ink); font-weight: 700; border-radius: 0.5rem;
}
.skip:focus { inset-block-start: 0.75rem; }

/* Header */
.bar { display: grid; grid-template-columns: auto 1fr; grid-template-areas: "brand lang" "nav nav"; align-items: center; gap: 0 1rem; padding-block: 0.75rem; }
.brand { grid-area: brand; justify-self: start; display: inline-flex; align-items: center; gap: 0.75rem; font-size: var(--t-m); font-weight: 700; text-decoration: none; white-space: nowrap; }
.brand img { inline-size: 2.5rem; block-size: 2.5rem; border-radius: 0.6rem; }
.main-nav { grid-area: nav; }
.lang-switch { grid-area: lang; justify-content: flex-end; }
.main-nav, .lang-switch { display: flex; flex-wrap: wrap; gap: 0 1rem; font-size: 0.9375rem; }
.main-nav a, .lang-switch a { padding-block: 0.6rem; color: var(--muted); text-decoration: none; transition: color 0.15s; }
.main-nav a:hover, .lang-switch a:hover { color: var(--ink); text-decoration: underline; text-decoration-color: var(--gold); text-decoration-thickness: 2px; }
.main-nav a[aria-current="page"], .lang-switch a[aria-current="true"] { color: var(--ink); text-decoration: underline; text-decoration-color: var(--gold); text-decoration-thickness: 2px; }
@media (min-width: 56rem) {
  .bar { grid-template-columns: auto 1fr auto; grid-template-areas: "brand nav lang"; }
  .main-nav { justify-content: center; font-size: var(--t-s); }
}

/* Colour chapters: the home page is a row of flat full-width fields */
.chapter { padding-block: var(--section); }

.hero-field { position: relative; overflow: clip; padding-block: clamp(2.5rem, 7vw, 5.5rem) clamp(3rem, 8vw, 6rem); }
.hero { position: relative; }
.hero-text { position: relative; z-index: 1; max-inline-size: 38rem; }
.hero h1 { font-size: var(--t-xl); line-height: 1.04; font-weight: 700; letter-spacing: -0.03em; text-wrap: balance; }
:lang(ar) .hero h1 { line-height: 1.35; letter-spacing: 0; }
.lead { margin-block-start: 1.5rem; font-size: var(--t-m); line-height: 1.45; max-inline-size: 34em; }
.soon { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-block-start: 2rem; }
.badge { display: inline-block; padding: 0.5rem 0.9rem; background: var(--card); color: var(--muted); border-radius: 0.5rem; font-weight: 600; font-size: 0.9375rem; }

.motif { display: block; inline-size: min(52%, 15rem); block-size: auto; margin-block-start: 2.5rem; margin-inline-start: auto; margin-inline-end: -6%; rotate: 8deg; }

.tiles-field { background: var(--deep); }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 18rem), 1fr)); gap: 2.5rem 4rem; }
.tile h2 { font-size: var(--t-l); line-height: 1.15; font-weight: 700; color: var(--gold); }
.tile p { margin-block-start: 0.75rem; font-size: var(--t-m); line-height: 1.45; }

.note-field { background: var(--gold); color: var(--gold-ink); }
.data-note { max-inline-size: 48rem; }
.data-note h2 { font-size: var(--t-xl); line-height: 1.05; font-weight: 700; letter-spacing: -0.03em; text-wrap: balance; }
:lang(ar) .data-note h2 { line-height: 1.35; letter-spacing: 0; }
.data-note p { margin-block-start: 1.25rem; font-size: var(--t-m); line-height: 1.45; }
.data-note .button { margin-block-start: 2rem; background: var(--ground); color: var(--ink); }
.data-note :focus-visible { outline-color: var(--gold-ink); }

/* Buttons */
.button {
  display: inline-block; font: inherit; font-weight: 700; color: var(--gold-ink); background: var(--gold);
  border: 0; border-radius: 0.75rem; padding: 0.9rem 1.6rem; text-decoration: none; cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}
.button:hover { background: #ffd25a; }
.data-note .button:hover { background: var(--card); }
.button:active { transform: translateY(1px); }
.button:disabled { cursor: progress; background: var(--muted); }

/* Reading pages */
.prose { max-inline-size: 46rem; margin-inline: auto; padding-block: clamp(2rem, 6vw, 4.5rem) var(--section); }
:lang(ar) .prose { max-inline-size: 38rem; } /* Arabic letters are narrow: 46rem would hold about 93 characters a line */
.prose h1 { font-size: var(--t-xl); line-height: 1.05; font-weight: 700; letter-spacing: -0.03em; text-wrap: balance; }
:lang(ar) .prose h1 { line-height: 1.35; letter-spacing: 0; }
.prose h2 { margin-block-start: 3.25rem; font-size: var(--t-m); line-height: 1.3; font-weight: 700; color: var(--gold); text-wrap: balance; }
.prose p { margin-block-start: 1rem; }
.prose h2 + p { margin-block-start: 0.75rem; }
.prose .lead { margin-block-start: 1.25rem; }
.prose .updated { margin-block-start: 1rem; color: var(--muted); }
.prose p a { color: var(--gold); }
.prose p a:hover { text-decoration-thickness: 2px; }
.prose ul { margin-block-start: 1rem; padding: 0; list-style: none; }
.prose li { position: relative; padding-inline-start: 1.5rem; margin-block-start: 0.6rem; }
.prose ul li::before { content: ""; position: absolute; inset-inline-start: 0; inset-block-start: 0.7em; inline-size: 0.55rem; block-size: 0.55rem; border-radius: 50%; background: var(--gold); }
.prose ol { margin-block-start: 1rem; padding-inline-start: 1.5rem; }
.prose ol li { padding-inline-start: 0.5rem; }
.prose ol li::marker { color: var(--gold); font-weight: 700; }
.prose section + section { margin-block-start: 0.5rem; }

/* Forms */
.form { display: grid; gap: 1.25rem; max-inline-size: 36rem; margin-block: 1.75rem 1rem; }
.field-group, .form .field { display: grid; gap: 0.5rem; }
.form label { color: var(--muted); font-weight: 600; }
.form input, .form select, .form textarea {
  inline-size: 100%; font: inherit; color: var(--ink); background: var(--field);
  border: 0; border-block-end: 2px solid var(--edge); border-radius: 0.5rem; padding: 0.8rem 1rem;
  transition: border-color 0.15s;
}
.form textarea { min-block-size: 9em; resize: vertical; }
.form input:focus, .form select:focus, .form textarea:focus { border-block-end-color: var(--gold); outline-offset: 0; }
.form [aria-invalid="true"] { border-block-end-color: var(--danger); }
.hint { margin: 0; font-size: 0.875rem; color: var(--muted); }
.trap { position: absolute; inset-inline-start: -9999px; inline-size: 1px; block-size: 1px; overflow: hidden; } /* taste-skill-ignore: hidden bot trap, not a rule */
#turnstile { min-block-size: 4rem; }
#form-status { min-block-size: 1.6em; margin: 0; font-weight: 600; }
#form-status[data-kind="success"] { color: var(--gold); }
#form-status[data-kind="error"] { color: var(--danger); }

/* Footer */
.site-footer { background: var(--card); padding-block: clamp(2.5rem, 6vw, 4rem); }
.site-footer .product { font-size: var(--t-m); font-weight: 700; text-wrap: balance; }
.site-footer address { margin-block-start: 0.5rem; color: var(--muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 0 1.5rem; margin-block-start: 1.25rem; }
.site-footer nav a { padding-block: 0.6rem; }
@media (min-width: 40rem) {
  .site-footer .wrap { display: grid; grid-template-columns: 1fr auto; grid-template-areas: "product nav" "address nav"; column-gap: 3rem; align-items: start; }
  .site-footer .product { grid-area: product; }
  .site-footer address { grid-area: address; }
  .site-footer nav { grid-area: nav; justify-content: flex-end; margin-block-start: 0; }
}

/* Wide screens: the motif leaves the flow and runs off the edge */
@media (min-width: 64rem) {
  .hero { min-block-size: 30rem; display: flex; align-items: center; }
  .hero-text { max-inline-size: min(47rem, 64%); }
  .motif {
    position: absolute; inset-inline-end: -4%; inset-block-start: 50%; margin: 0;
    inline-size: auto; block-size: min(125%, 38rem); translate: 0 -50%; rotate: 8deg;
  }
}

/* Motion: transform only, and none at all if the visitor asks for less */
@media (prefers-reduced-motion: reduce) {
  .button { transition: background-color 0.15s; }
  .button:active { transform: none; }
}
@keyframes arrive { from { transform: translateY(1.5rem); } to { transform: none; } }
@keyframes pop { from { scale: 0.9; } to { scale: 1; } }
@media (prefers-reduced-motion: no-preference) {
  .hero-text > * { animation: arrive 0.8s var(--ease) both; }
  .hero-text > :nth-child(2) { animation-delay: 0.1s; }
  .hero-text > :nth-child(3) { animation-delay: 0.2s; }
  .motif { animation: pop 1s var(--ease) 0.15s both; }

  /* Below the first screen each part rises as it arrives (never fades, so text keeps full contrast). */
  @supports (animation-timeline: view()) {
    .tile, .data-note > *, .site-footer .wrap > *, .prose > h1, .prose > .lead, .prose section > h2, .form .field, .form > .button {
      animation: arrive linear both; animation-timeline: view(); animation-range: entry 0% entry 45%;
    }
  }
}