/* ------------------------------------------------------------------
   حوكمة الذكاء الاصطناعي وسلامته — shared stylesheet
   Tokens + base + course-index components + article components.
   ------------------------------------------------------------------ */

:root {
  --paper: #fbfaf6;
  --panel: #ffffff;
  --panel-2: #f1f2ec;
  --ink: #17232a;
  --ink-2: #4a5a60;
  --ink-3: #74838a;
  --rule: #d9ded6;
  --rule-soft: #e8ebe4;
  --accent: #0e6360;
  --accent-2: #14807c;
  --accent-wash: #eaf3f1;
  --flag: #8a6a12;
  --flag-bg: #faf4e2;
  --flag-rule: #e6d6a8;

  --ar: "SF Arabic", "Geeza Pro", "Noto Naskh Arabic", "Noto Sans Arabic",
        "Segoe UI", Tahoma, sans-serif;
  --ar-serif: "Noto Naskh Arabic", "SF Arabic", "Geeza Pro", "Traditional Arabic",
              "Times New Roman", serif;
  --en: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #10171a; --panel: #161f23; --panel-2: #1c272c;
    --ink: #dfe6e3; --ink-2: #a6b3b2; --ink-3: #7d8b8a;
    --rule: #2a3740; --rule-soft: #212d34;
    --accent: #63b8b0; --accent-2: #7fcac2; --accent-wash: #17282a;
    --flag: #d3ac4e; --flag-bg: #2a2416; --flag-rule: #4a3f20;
  }
}
:root[data-theme="light"] {
  --paper: #fbfaf6; --panel: #ffffff; --panel-2: #f1f2ec;
  --ink: #17232a; --ink-2: #4a5a60; --ink-3: #74838a;
  --rule: #d9ded6; --rule-soft: #e8ebe4;
  --accent: #0e6360; --accent-2: #14807c; --accent-wash: #eaf3f1;
  --flag: #8a6a12; --flag-bg: #faf4e2; --flag-rule: #e6d6a8;
}
:root[data-theme="dark"] {
  --paper: #10171a; --panel: #161f23; --panel-2: #1c272c;
  --ink: #dfe6e3; --ink-2: #a6b3b2; --ink-3: #7d8b8a;
  --rule: #2a3740; --rule-soft: #212d34;
  --accent: #63b8b0; --accent-2: #7fcac2; --accent-wash: #17282a;
  --flag: #d3ac4e; --flag-bg: #2a2416; --flag-rule: #4a3f20;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--ar); font-size: 17px; line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
:root[data-lang="en"] body { font-family: var(--en); font-size: 16px; line-height: 1.62; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.wrap { max-width: 60rem; margin-inline: auto; padding-inline: 1.4rem; }
.wrap-narrow { max-width: 44rem; margin-inline: auto; padding-inline: 1.4rem; }

/* ---- bar ---- */
.bar { border-bottom: 1px solid var(--rule); background: var(--panel); }
.bar-in {
  display: flex; flex-wrap: wrap; align-items: center; gap: .6rem 1.4rem;
  min-height: 62px; padding-block: .7rem;
}
.brand { font-size: 1.12rem; font-weight: 600; margin-inline-end: auto; }
.brand span { color: var(--ink-3); font-weight: 400; font-size: .9rem; }
.brand a { color: inherit; }
.toggle { display: flex; border: 1px solid var(--rule); }
.toggle button {
  appearance: none; border: 0; background: transparent; cursor: pointer;
  font-family: inherit; font-size: .86rem; padding: .34rem .8rem; color: var(--ink-2);
  border-inline-start: 1px solid var(--rule);
}
.toggle button:first-child { border-inline-start: 0; }
.toggle button[aria-pressed="true"] { background: var(--ink); color: var(--paper); font-weight: 600; }

/* ---- head ---- */
.head { padding-block: 3.2rem 2.4rem; border-bottom: 3px solid var(--accent); }
.head h1 { margin: 0; font-size: clamp(1.75rem, 4.4vw, 2.7rem); line-height: 1.3; font-weight: 700; }
.head .alt { color: var(--ink-3); font-size: 1.02rem; margin: .7rem 0 0; }
.head .lede { margin: 1.2rem 0 0; max-width: 46rem; color: var(--ink-2); font-size: 1.04rem; }
.kicker {
  font-family: var(--mono); font-size: .68rem; letter-spacing: .16em; text-transform: uppercase;
  color: var(--accent); margin: 0 0 .7rem;
}
:root[data-lang="ar"] .kicker { font-family: var(--ar); letter-spacing: 0; text-transform: none; font-size: .82rem; }

/* ---- meta ---- */
.meta {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 1px; background: var(--rule); border: 1px solid var(--rule); margin: 2rem 0 0;
}
.meta > div { background: var(--panel); padding: .85rem 1rem; }
.meta dt { font-size: .74rem; color: var(--ink-3); margin: 0 0 .2rem; }
.meta dd { margin: 0; font-size: .95rem; }

/* ---- sections ---- */
section { padding-block: 2.6rem; border-bottom: 1px solid var(--rule-soft); }
h2 { font-size: 1.3rem; font-weight: 700; margin: 0 0 .9rem; }
h3 { font-size: 1.05rem; font-weight: 600; margin: 1.7rem 0 .4rem; }
p { margin: .8rem 0; }
ul, ol { margin: .7rem 0; padding-inline-start: 1.4rem; }
li { margin: .4rem 0; }
.desc { color: var(--ink-2); font-size: .95rem; }

/* ---- units ---- */
.unit { border: 1px solid var(--rule); background: var(--panel); padding: 1.2rem 1.4rem; margin: 1.1rem 0; }
.unit h4 {
  font-size: .78rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: var(--ink-3); margin: 1.3rem 0 .3rem;
}
:root[data-lang="ar"] .unit h4 { letter-spacing: 0; text-transform: none; font-size: .92rem; }
.unit ul { margin: .4rem 0; }
.unit ul li { margin: .5rem 0; font-size: .95rem; }
.rd-why { color: var(--ink-2); font-size: .9rem; display: block; margin-top: .15rem; }
.task {
  border-inline-start: 3px solid var(--accent); background: var(--panel-2);
  padding: .7rem .9rem; margin-top: 1rem; font-size: .95rem;
}
.task p { margin: 0; }
.unit-top { display: flex; flex-wrap: wrap; align-items: baseline; gap: .5rem .9rem; }
.unit-n {
  font-family: var(--mono); font-size: .72rem; font-weight: 700; color: var(--accent);
  border: 1px solid var(--accent); padding: .08rem .38rem;
}
:root[data-lang="ar"] .unit-n { font-family: var(--ar); }
.unit h3 { margin: 0; font-size: 1.12rem; }
.unit .en-title { color: var(--ink-3); font-size: .9rem; font-family: var(--en); direction: ltr; unicode-bidi: isolate; }
.tagrow { display: flex; flex-wrap: wrap; gap: .35rem; margin: .7rem 0 0; }
.tag {
  font-size: .74rem; border: 1px solid var(--rule); background: var(--panel-2);
  color: var(--ink-2); padding: .1rem .5rem;
}
.tag-core { border-color: var(--accent); color: var(--accent); }
.tag-reg { border-color: var(--flag); color: var(--flag); background: var(--flag-bg); }

/* ---- table ---- */
.tw { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; margin: .9rem 0; }
th, td { border: 1px solid var(--rule); padding: .55rem .7rem; text-align: start; vertical-align: top; }
th { background: var(--panel-2); font-weight: 600; }
td .en, th .en { font-family: var(--en); direction: ltr; unicode-bidi: isolate; display: inline-block; }

/* ---- flags / verification ---- */
.flag {
  border: 1px solid var(--flag-rule); background: var(--flag-bg); color: var(--ink);
  padding: .8rem 1rem; margin: 1rem 0; font-size: .93rem;
}
.flag b { color: var(--flag); }
.v { font-size: .74rem; border: 1px solid var(--rule); padding: .05rem .4rem; color: var(--ink-3); white-space: nowrap; }
.v-ok { border-color: var(--accent); color: var(--accent); }
.v-no { border-color: var(--flag); color: var(--flag); }

footer { padding-block: 2rem 3.5rem; color: var(--ink-3); font-size: .88rem; }

[hidden] { display: none !important; }
.en-only, .ar-only { display: none; }
:root[data-lang="en"] .en-only { display: revert; }
:root[data-lang="ar"] .ar-only { display: revert; }


/* ==================================================================
   ARTICLE PAGES
   ================================================================== */

.art-bar-in { min-height: 54px; font-size: .9rem; }
.art-back { color: var(--ink-2); }
.art-back::before { content: "→ "; }        /* RTL: arrow points back to the right-hand origin */
:root[dir="ltr"] .art-back::before { content: "← "; }

.art-head { padding-block: 2.8rem 1.6rem; }
.art-head .unit-line {
  display: flex; flex-wrap: wrap; gap: .5rem .7rem; align-items: center;
  margin: 0 0 1rem; font-size: .84rem; color: var(--ink-3);
}
.art-head h1 {
  margin: 0; font-family: var(--ar-serif); font-weight: 700;
  font-size: clamp(1.6rem, 4vw, 2.35rem); line-height: 1.35;
}
.art-head .sub {
  margin: .75rem 0 0; color: var(--ink-3); font-size: .95rem;
  font-family: var(--en); direction: ltr; unicode-bidi: isolate; text-align: start;
}
.art-head .standfirst {
  margin: 1.3rem 0 0; font-size: 1.1rem; line-height: 1.85; color: var(--ink-2);
  font-family: var(--ar-serif);
}

.art-meta {
  display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--rule);
  margin: 1.8rem 0 0; background: var(--panel);
}
.art-meta > div {
  padding: .6rem .9rem; flex: 1 1 9rem; border-inline-start: 1px solid var(--rule);
}
.art-meta > div:first-child { border-inline-start: 0; }
.art-meta dt { font-size: .72rem; color: var(--ink-3); margin: 0 0 .15rem; }
.art-meta dd { margin: 0; font-size: .9rem; }

/* English abstract for non-Arabic readers */
.abstract {
  border: 1px solid var(--rule); border-inline-start: 3px solid var(--ink-3);
  background: var(--panel-2); padding: 1rem 1.1rem; margin: 2.2rem 0 0;
  direction: ltr; text-align: left; font-family: var(--en);
  font-size: .93rem; line-height: 1.6;
}
.abstract h2 {
  font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-3); margin: 0 0 .5rem; font-weight: 700;
}
.abstract p { margin: .5rem 0; }
.abstract p:last-child { margin-bottom: 0; }

/* body typography */
.art-body { font-family: var(--ar-serif); font-size: 1.09rem; line-height: 1.95; }
.art-body section { padding-block: 1.9rem; border-bottom: 0; }
.art-body section + section { border-top: 1px solid var(--rule-soft); }
.art-body h2 {
  font-family: var(--ar); font-size: 1.22rem; font-weight: 700;
  margin: 0 0 .3rem; line-height: 1.5;
}
.art-body h2 .n {
  font-family: var(--mono); font-size: .78rem; color: var(--accent);
  margin-inline-end: .5rem; font-weight: 700;
}
.art-body h3 { font-family: var(--ar); font-size: 1.03rem; margin: 1.6rem 0 .3rem; }
.art-body p { margin: 1rem 0; }
.art-body ul li, .art-body ol li { margin: .6rem 0; }
.art-body .lead { font-size: 1.14rem; color: var(--ink); }

.pull {
  margin: 1.8rem 0; padding: .2rem 1.1rem;
  border-inline-start: 3px solid var(--accent);
  font-size: 1.15rem; line-height: 1.8; color: var(--ink);
}
.pull p { margin: .5rem 0; }

.note {
  font-family: var(--ar); font-size: .93rem; line-height: 1.7;
  background: var(--panel-2); border: 1px solid var(--rule);
  padding: .85rem 1rem; margin: 1.6rem 0;
}
.note b { color: var(--accent); }
.note p { margin: .45rem 0; }
.note p:first-child { margin-top: 0; }
.note p:last-child { margin-bottom: 0; }

.term {
  font-family: var(--en); direction: ltr; unicode-bidi: isolate;
  font-size: .88em; color: var(--ink-3);
}

/* figures */
figure {
  margin: 2.2rem 0; padding: 1.1rem 1rem .9rem;
  border: 1px solid var(--rule); background: var(--panel);
}
/* Break figures out of the 44rem reading measure once there is room for it.
   The text column stays comfortable; the diagrams get the width they need. */
@media (min-width: 62rem) {
  .art-body figure { margin-inline: -7rem; }
  .art-body figure figcaption { max-width: 44rem; margin-inline: .9rem 0; }
}
figure svg { display: block; width: 100%; height: auto; direction: ltr; }
figcaption {
  font-family: var(--ar); font-size: .87rem; line-height: 1.65; color: var(--ink-2);
  margin-top: .9rem; padding-top: .7rem; border-top: 1px solid var(--rule-soft);
}
figcaption b { color: var(--ink); font-weight: 600; }
.fig-scroll { overflow-x: auto; }
.fig-scroll svg { min-width: 34rem; }

/* svg theming hooks */
.svg-fill-panel { fill: var(--panel); }
.svg-fill-panel2 { fill: var(--panel-2); }
.svg-fill-wash { fill: var(--accent-wash); }
.svg-fill-flagbg { fill: var(--flag-bg); }
.svg-stroke-rule { stroke: var(--rule); }
.svg-stroke-ink { stroke: var(--ink-3); }
.svg-stroke-accent { stroke: var(--accent); }
.svg-stroke-flag { stroke: var(--flag); }
.svg-t { fill: var(--ink); font-family: var(--ar); font-size: 13px; }
.svg-t-sm { fill: var(--ink-2); font-family: var(--ar); font-size: 11.5px; }
.svg-t-xs { fill: var(--ink-3); font-family: var(--ar); font-size: 10.5px; }
.svg-t-accent { fill: var(--accent); font-family: var(--ar); font-size: 11.5px; font-weight: 700; }
.svg-t-flag { fill: var(--flag); font-family: var(--ar); font-size: 11.5px; font-weight: 700; }
.svg-t-lab { fill: var(--ink-3); font-family: var(--mono); font-size: 10px; }

/* honesty box + sources */
.unknowns {
  border: 1px solid var(--flag-rule); background: var(--flag-bg);
  padding: 1rem 1.1rem; margin: 2rem 0 0; font-family: var(--ar); font-size: .95rem;
}
.unknowns h2 { font-size: 1rem; margin: 0 0 .5rem; color: var(--flag); }
.unknowns ul { margin: .5rem 0 0; }
.unknowns li { margin: .45rem 0; }

.sources { font-family: var(--ar); font-size: .93rem; }
.sources h2 { font-size: 1.05rem; }
.sources ol { padding-inline-start: 1.6rem; }
.sources li { margin: .65rem 0; }
.sources .en-src { font-family: var(--en); direction: ltr; unicode-bidi: isolate; }

.artnav {
  display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
  border-top: 1px solid var(--rule); padding-block: 1.6rem; font-size: .93rem;
}
.artnav a { display: block; }
.artnav .lab { display: block; color: var(--ink-3); font-size: .78rem; }

/* reading cards (index of readings) */
.cards { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); }
.card {
  border: 1px solid var(--rule); background: var(--panel); padding: 1rem 1.1rem;
  display: flex; flex-direction: column; gap: .45rem;
}
.card h3 { margin: 0; font-size: 1.05rem; }
.card h3 a { color: inherit; }
.card .card-meta { font-size: .78rem; color: var(--ink-3); }
.card p { margin: 0; font-size: .92rem; color: var(--ink-2); }

/* inline link to an authored Arabic reading, used on the course index */
.rd-native {
  display: inline-block; font-size: .78rem; font-weight: 700;
  border: 1px solid var(--accent); color: var(--accent);
  padding: .05rem .45rem; margin-inline-start: .35rem; white-space: nowrap;
}
.rd-native:hover { background: var(--accent); color: var(--paper); text-decoration: none; }