/* =====================================================================
   SBI/AE design system
   Brand: Insight Yellow leads, Ink grounds it (SBI Brand Identity).
   All layout uses logical properties so Arabic (RTL) and English (LTR)
   share one stylesheet.
   ===================================================================== */

/* ---------- Tokens ---------- */
:root {
  --yellow: #FFC400;
  --ink: #0E1116;
  --charcoal: #1A1F29;
  --steel: #8A93A3;
  --paper: #F7F6F0;

  --radius: 14px;
  --radius-s: 8px;
  --gap: 1.25rem;
  --nav-h: 66px;
  --ease: cubic-bezier(.2, .7, .2, 1);

  --font-ar: "Cairo", "Segoe UI", Tahoma, sans-serif;
  --font-en: "Montserrat", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
}

/* Dark (default) */
:root, :root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0E1116;
  --page-alt: #121620;
  --surface: #1A1F29;
  --surface-2: #232A37;
  --surface-3: #2B3342;
  --border: rgba(255, 255, 255, .09);
  --border-strong: rgba(255, 255, 255, .18);
  --text: #F7F6F0;
  --text-2: #C4C9D2;
  --muted: #8A93A3;
  --accent: #FFC400;
  --accent-text: #FFC400;      /* accent used as text */
  --accent-hover: #FFD340;
  --on-accent: #0E1116;
  --accent-soft: rgba(255, 196, 0, .12);
  --good: #19C37D;
  --bad: #FF5A4F;
  --neutral: #8A93A3;
  --good-soft: rgba(25, 195, 125, .14);
  --bad-soft: rgba(255, 90, 79, .14);
  --grid: #262D3A;
  --axis: #3A4252;
  --shadow: 0 18px 50px rgba(0, 0, 0, .45);
  /* categorical chart slots (fixed order; identity, never rank) */
  --c1: #FFC400; --c2: #4C8DFF; --c3: #D55181; --c4: #9085E9; --c5: #2BB3C0; --c6: #E0703A;
  /* sequential ramp (yellow, light->strong on dark) */
  --s1: #3A3420; --s2: #5C4D12; --s3: #8C7109; --s4: #C29B00; --s5: #FFC400;
}

:root[data-theme="light"] {
  color-scheme: light;
  --page: #F7F6F0;
  --page-alt: #EFEEE6;
  --surface: #FFFFFF;
  --surface-2: #F3F2EC;
  --surface-3: #E8E7DF;
  --border: rgba(14, 17, 22, .10);
  --border-strong: rgba(14, 17, 22, .22);
  --text: #0E1116;
  --text-2: #3D4452;
  --muted: #646C7A;
  --accent: #FFC400;
  --accent-text: #8A6100;
  --accent-hover: #F0B800;
  --on-accent: #0E1116;
  --accent-soft: rgba(255, 196, 0, .20);
  --good: #0E8F59;
  --bad: #D63A30;
  --neutral: #646C7A;
  --good-soft: rgba(14, 143, 89, .12);
  --bad-soft: rgba(214, 58, 48, .10);
  --grid: #E6E4DB;
  --axis: #C9C7BC;
  --shadow: 0 14px 40px rgba(14, 17, 22, .10);
  --c1: #E0A800; --c2: #2F6FDB; --c3: #C2416F; --c4: #6250D6; --c5: #13879A; --c6: #C9561F;
  --s1: #FFF3C4; --s2: #FFE07A; --s3: #FFC400; --s4: #C29200; --s5: #7A5C00;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-ar);
  font-weight: 500;
  background: var(--page);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background .25s, color .25s;
}
html[lang="en"] body { font-family: var(--font-en); line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.skip { position: absolute; inset-inline-start: -999px; top: 8px; background: var(--accent); color: var(--on-accent); padding: .5rem 1rem; border-radius: 8px; z-index: 200; }
.skip:focus { inset-inline-start: 8px; }
.container { width: min(1200px, 100% - 32px); margin-inline: auto; }
.num, .mono { font-family: var(--mono); font-weight: 500; letter-spacing: -.3px; direction: ltr; unicode-bidi: isolate; }
.ltr { direction: ltr; unicode-bidi: isolate; }
.muted { color: var(--muted); }
.accent { color: var(--accent-text); }
.hidden, [hidden] { display: none !important; }

h1, h2, h3, h4 { line-height: 1.25; font-weight: 800; }
h1 { font-size: clamp(2rem, 4.6vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.2rem); margin-bottom: .6rem; }
h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: .35rem; }
h4 { font-size: 1rem; font-weight: 700; }
html[lang="en"] h3, html[lang="en"] h4 { font-weight: 600; }
p { color: var(--text-2); }
.eyebrow {
  color: var(--accent-text); font-weight: 700; font-size: .78rem; text-transform: uppercase;
  letter-spacing: 3px; margin-bottom: .6rem; display: inline-flex; align-items: center; gap: .5rem;
}
html[lang="ar"] .eyebrow { letter-spacing: 0; font-size: .9rem; }
.eyebrow::before { content: ""; width: 18px; height: 3px; border-radius: 2px; background: var(--accent); }
.lead { font-size: 1.12rem; color: var(--text-2); max-width: 680px; }
.section { padding: 4.5rem 0; }
.section.alt { background: var(--page-alt); border-block: 1px solid var(--border); }
.section-head { margin-bottom: 2rem; max-width: 760px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }

/* ---------- Buttons & chips ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem; justify-content: center;
  background: var(--accent); color: var(--on-accent); border: 1px solid var(--accent);
  padding: .72rem 1.3rem; border-radius: 999px; font-weight: 700; cursor: pointer;
  transition: background .2s, transform .2s var(--ease), border-color .2s; white-space: nowrap;
}
.btn:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.small { padding: .42rem .95rem; font-size: .88rem; }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }
.btn-row { display: flex; gap: .75rem; flex-wrap: wrap; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); cursor: pointer; display: inline-grid; place-items: center; font-weight: 700; font-size: .95rem;
}
.icon-btn:hover { border-color: var(--accent); }
.chip {
  display: inline-flex; align-items: center; gap: .35rem; background: var(--surface-2); border: 1px solid var(--border);
  padding: .2rem .7rem; border-radius: 999px; font-size: .8rem; color: var(--text-2); white-space: nowrap;
}
.chip.accent { background: var(--accent-soft); border-color: transparent; color: var(--text); }
.chip.sim { background: var(--accent-soft); color: var(--text); border: 1px dashed var(--accent); font-weight: 700; }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.pill-group { display: inline-flex; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.pill-group button { border: 0; background: transparent; padding: .38rem .9rem; border-radius: 999px; cursor: pointer; color: var(--text-2); font-weight: 600; font-size: .88rem; }
.pill-group button.on { background: var(--accent); color: var(--on-accent); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100; height: var(--nav-h);
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--border);
}
.nav-inner { height: 100%; display: flex; align-items: center; gap: 1rem; }
.logo { display: flex; align-items: center; gap: .55rem; flex-shrink: 0; }
.logo-icon { width: 36px; height: 36px; }
.logo-text { font-family: var(--font-en); font-weight: 800; font-size: 1.4rem; color: var(--accent-text); line-height: 1; }
:root[data-theme="dark"] .logo-text { color: var(--accent); }
.logo-slash { color: var(--muted); margin-inline: 2px; font-weight: 600; }
.logo-ae { color: var(--text); }
.nav-links { display: flex; align-items: center; gap: .15rem; margin-inline-start: auto; }
.nav-links > a, .nav-links .dd > button {
  padding: .5rem .7rem; border-radius: 8px; color: var(--text-2); font-weight: 600; font-size: .92rem;
  background: none; border: 0; cursor: pointer; display: inline-flex; align-items: center; gap: .3rem; white-space: nowrap;
}
.nav-links > a:hover, .nav-links .dd > button:hover, .nav-links a.active, .nav-links .dd.active > button { color: var(--text); background: var(--surface-2); }
.nav-links a.active, .nav-links .dd.active > button { box-shadow: inset 0 -2px 0 var(--accent); }
.dd { position: relative; }
.dd-menu {
  position: absolute; top: calc(100% + 6px); inset-inline-start: 0; min-width: 230px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow); padding: .4rem; display: none; z-index: 110;
}
.dd:hover .dd-menu, .dd.open .dd-menu, .dd:focus-within .dd-menu { display: block; }
.dd-menu a { display: block; padding: .55rem .75rem; border-radius: 8px; color: var(--text-2); font-size: .92rem; }
.dd-menu a small { display: block; color: var(--muted); font-size: .78rem; }
.dd-menu a:hover, .dd-menu a.active { background: var(--surface-2); color: var(--text); }
.nav-tools { display: flex; gap: .4rem; }
.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; padding: 5rem 0 4.5rem; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(ellipse 60% 70% at 85% 0%, var(--accent-soft), transparent 70%);
}
html[dir="rtl"] .hero::before { background: radial-gradient(ellipse 60% 70% at 15% 0%, var(--accent-soft), transparent 70%); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.25fr 1fr; gap: 3rem; align-items: center; }
.hero h1 .accent { color: var(--accent-text); }
:root[data-theme="dark"] .hero h1 .accent { color: var(--accent); }
.hero .lead { margin: 1.2rem 0 1.4rem; }
.hero-sub { display: flex; align-items: center; gap: .6rem; color: var(--muted); font-size: .95rem; margin-bottom: 1.6rem; flex-wrap: wrap; }
.hero-sub .dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }
.hero-links { display: flex; gap: 1rem; margin-top: 1.4rem; flex-wrap: wrap; }
.hero-links a { color: var(--muted); font-weight: 600; font-size: .92rem; display: inline-flex; gap: .4rem; align-items: center; }
.hero-links a:hover { color: var(--text); }
.hero-panel { background: var(--surface); border: 1px solid var(--border); border-radius: 18px; padding: 1.3rem; box-shadow: var(--shadow); }
.hero-panel .hp-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: .8rem; gap: .5rem; flex-wrap: wrap; }
.hero-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; margin-bottom: .8rem; }
.hero-kpis div { background: var(--surface-2); border-radius: 10px; padding: .6rem .7rem; }
.hero-kpis small { color: var(--muted); font-size: .72rem; display: block; }
.hero-kpis b { font-size: .98rem; display: block; white-space: nowrap; }
.hero-chart { min-height: 150px; }
.journey { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; margin-top: .9rem; }
.journey span { background: var(--surface-2); border: 1px solid var(--border); padding: .25rem .7rem; border-radius: 999px; font-size: .8rem; color: var(--text-2); }
.journey b { color: var(--accent-text); }
html[dir="rtl"] .flip { display: inline-block; transform: scaleX(-1); }

/* ---------- Pillars ---------- */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.pillar {
  position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.6rem; display: flex; flex-direction: column; gap: .7rem; transition: transform .25s var(--ease), border-color .25s;
  overflow: hidden;
}
.pillar:hover { transform: translateY(-4px); border-color: var(--pc, var(--accent)); }
.pillar::after { content: ""; position: absolute; inset-block-start: 0; inset-inline: 0; height: 4px; background: var(--pc, var(--accent)); }
.pillar .p-tag { font-family: var(--mono); font-size: .78rem; color: var(--muted); }
.pillar .p-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--surface-2); color: var(--pc, var(--accent)); }
.pillar ul { list-style: none; display: grid; gap: .3rem; margin-block: .2rem .6rem; }
.pillar li { color: var(--text-2); font-size: .92rem; padding-inline-start: 1rem; position: relative; }
.pillar li::before { content: ""; position: absolute; inset-inline-start: 0; top: .7em; width: 6px; height: 6px; border-radius: 2px; background: var(--pc, var(--accent)); }
.pillar .btn { margin-top: auto; align-self: flex-start; }
.p-portfolio { --pc: var(--c1); }
.p-lab { --pc: var(--c2); }
.p-academy { --pc: var(--good); }

/* ---------- Generic cards & grids ---------- */
.grid { display: grid; gap: var(--gap); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.35rem;
  transition: border-color .2s, transform .2s var(--ease);
}
a.card:hover, .card.hover:hover { border-color: var(--accent); transform: translateY(-3px); }
.card .c-ico { width: 42px; height: 42px; border-radius: 11px; background: var(--accent-soft); display: grid; place-items: center; margin-bottom: .8rem; color: var(--accent-text); }
:root[data-theme="dark"] .card .c-ico { color: var(--accent); }
.card p { font-size: .94rem; }
.card-foot { display: flex; justify-content: space-between; align-items: center; gap: .5rem; margin-top: .9rem; flex-wrap: wrap; }
.link-arrow { color: var(--accent-text); font-weight: 700; font-size: .9rem; display: inline-flex; gap: .3rem; align-items: center; }
:root[data-theme="dark"] .link-arrow { color: var(--accent); }

.notice {
  display: flex; gap: .7rem; align-items: flex-start; background: var(--accent-soft); border: 1px dashed var(--accent);
  padding: .8rem 1rem; border-radius: 12px; font-size: .92rem; color: var(--text);
}
.notice b { font-weight: 800; }

/* ---------- Page header ---------- */
.page-head { padding: 3.2rem 0 2rem; border-bottom: 1px solid var(--border); background: linear-gradient(180deg, var(--page-alt), var(--page)); }
.page-head p.lead { margin-top: .6rem; }
.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: .8rem; display: flex; gap: .4rem; flex-wrap: wrap; }
.crumbs a:hover { color: var(--text); }

/* ---------- Stats / counters ---------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: .8rem; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1rem 1.1rem; }
.stat b { display: block; font-size: 1.9rem; color: var(--accent-text); line-height: 1.1; }
:root[data-theme="dark"] .stat b { color: var(--accent); }
.stat small { color: var(--muted); font-size: .82rem; display: block; margin-top: .3rem; line-height: 1.35; }

/* ---------- KPI cards (lab) ---------- */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: .75rem; }
.kpi {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: .85rem 1rem;
  display: flex; flex-direction: column; gap: .15rem; position: relative; cursor: default;
}
.kpi .k-label { color: var(--muted); font-size: .8rem; font-weight: 600; display: flex; justify-content: space-between; gap: .3rem; }
.kpi .k-val { font-size: 1.45rem; color: var(--text); }
.kpi .k-prev { font-size: .76rem; color: var(--muted); }
.delta { display: inline-flex; align-items: center; gap: .25rem; font-family: var(--mono); font-size: .8rem; padding: .05rem .45rem; border-radius: 6px; width: fit-content; direction: ltr; }
.delta.good { color: var(--good); background: var(--good-soft); }
.delta.bad { color: var(--bad); background: var(--bad-soft); }
.delta.neutral { color: var(--neutral); background: var(--surface-2); }

/* ---------- Panels & charts ---------- */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.2rem; min-width: 0; }
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: .8rem; margin-bottom: .6rem; flex-wrap: wrap; }
.panel-head h3 { font-size: 1rem; margin: 0; }
.panel-head .why { font-size: .8rem; color: var(--muted); margin-top: .15rem; max-width: 520px; }
.panel-tools { display: flex; gap: .4rem; align-items: center; flex-wrap: wrap; }
.chart { position: relative; width: 100%; min-height: 220px; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart text { font-family: var(--mono); font-size: 11px; fill: var(--muted); }
.chart .lbl { font-family: inherit; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .axisline { stroke: var(--axis); stroke-width: 1; }
.chart .hit { cursor: pointer; }
.chart .hit:not(.mark) { fill: transparent; }
.chart .clickable { cursor: pointer; }
.chart .mark { transition: opacity .15s; }
.chart .dim { opacity: .3; }
.chart .val { fill: var(--text-2); font-weight: 500; }
.legend { display: flex; flex-wrap: wrap; gap: .3rem .9rem; margin-top: .5rem; font-size: .82rem; color: var(--text-2); }
.legend button { background: none; border: 0; display: inline-flex; align-items: center; gap: .35rem; cursor: pointer; color: var(--text-2); padding: .1rem 0; }
.legend button.off { opacity: .4; text-decoration: line-through; }
.legend i { width: 12px; height: 12px; border-radius: 3px; display: inline-block; flex-shrink: 0; }
.legend i.line { height: 3px; border-radius: 2px; }
.legend i.dash { height: 0; border-top: 2px dashed; background: none !important; }
.tooltip {
  position: fixed; z-index: 300; pointer-events: none; background: var(--surface-3); color: var(--text);
  border: 1px solid var(--border-strong); border-radius: 10px; padding: .55rem .75rem; font-size: .83rem; box-shadow: var(--shadow);
  max-width: 280px; line-height: 1.45;
}
.tooltip .tt-title { font-weight: 700; margin-bottom: .2rem; }
.tooltip .tt-row { display: flex; justify-content: space-between; gap: 1rem; }
.tooltip .tt-row span:first-child { color: var(--muted); }
.tooltip .tt-row span:last-child { font-family: var(--mono); direction: ltr; }
.tooltip .tt-hint { color: var(--accent-text); font-size: .75rem; margin-top: .3rem; }
:root[data-theme="dark"] .tooltip .tt-hint { color: var(--accent); }

/* ---------- Tables ---------- */
.table-wrap { overflow: auto; max-height: 460px; border: 1px solid var(--border); border-radius: 10px; }
table.data { width: 100%; border-collapse: collapse; font-size: .85rem; }
table.data th, table.data td { padding: .5rem .65rem; border-bottom: 1px solid var(--grid); text-align: start; white-space: nowrap; }
table.data th { position: sticky; top: 0; background: var(--surface-2); color: var(--muted); font-weight: 700; font-size: .78rem; cursor: pointer; user-select: none; z-index: 1; }
table.data th.sorted::after { content: " ▾"; color: var(--accent-text); }
table.data th.sorted.asc::after { content: " ▴"; }
table.data td.n { font-family: var(--mono); text-align: end; direction: ltr; }
table.data th.n { text-align: end; }
table.data tr:hover td { background: var(--surface-2); }
table.data tr.clickable { cursor: pointer; }
.bar-cell { position: relative; }
.bar-cell .bc { position: absolute; inset-block: 6px; inset-inline-end: 4px; background: var(--accent-soft); border-radius: 3px; z-index: 0; }
.bar-cell span { position: relative; z-index: 1; }
.cf-good { color: var(--good); }
.cf-bad { color: var(--bad); }
.tag { font-size: .72rem; padding: .08rem .5rem; border-radius: 999px; font-weight: 700; display: inline-block; }
.tag.fast { background: var(--good-soft); color: var(--good); }
.tag.normal { background: var(--surface-3); color: var(--text-2); }
.tag.slow { background: var(--accent-soft); color: var(--accent-text); }
:root[data-theme="dark"] .tag.slow { color: var(--accent); }
.tag.dead { background: var(--bad-soft); color: var(--bad); }

/* ---------- Lab layout ---------- */
.lab-bar { position: sticky; top: var(--nav-h); z-index: 50; background: color-mix(in srgb, var(--page) 94%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.lab-bar-inner { display: flex; align-items: center; gap: .8rem; padding: .6rem 0; flex-wrap: wrap; }
.lab-sections { display: flex; gap: .2rem; overflow-x: auto; scrollbar-width: none; flex: 1; }
.lab-sections a { padding: .35rem .7rem; border-radius: 8px; color: var(--muted); font-size: .85rem; font-weight: 600; white-space: nowrap; }
.lab-sections a:hover, .lab-sections a.on { color: var(--text); background: var(--surface-2); }
.filters { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: .6rem; }
.field { display: flex; flex-direction: column; gap: .25rem; min-width: 0; }
.field label { font-size: .75rem; color: var(--muted); font-weight: 700; }
select, input[type="text"], input[type="search"], input[type="month"], input[type="number"], textarea {
  width: 100%; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: 9px;
  padding: .5rem .65rem; font: inherit; font-size: .88rem; min-width: 0;
}
select:focus, input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
.active-filters { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; margin-top: .7rem; min-height: 28px; }
.active-filters .chip button { background: none; border: 0; cursor: pointer; color: var(--muted); font-size: .9rem; line-height: 1; }
.lab-section { padding: 2.2rem 0 .5rem; scroll-margin-top: calc(var(--nav-h) + 64px); }
.lab-section > .sec-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; margin-bottom: 1rem; flex-wrap: wrap; }
.sec-head h2 { font-size: 1.35rem; margin: 0; }
.sec-head p { font-size: .9rem; max-width: 640px; }
.collapse-btn { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: .3rem .7rem; cursor: pointer; font-size: .82rem; color: var(--text-2); }
.lab-section.collapsed .sec-body { display: none; }
.view-switch { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.persona { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.persona .card { position: relative; cursor: pointer; }
.persona .card.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.persona .card .q { font-style: italic; color: var(--text); margin-top: .5rem; font-weight: 600; }
.insights { list-style: none; display: grid; gap: .6rem; }
.insights li { background: var(--surface-2); border-inline-start: 3px solid var(--accent); padding: .6rem .8rem; border-radius: 8px; font-size: .9rem; color: var(--text-2); }
.insights li.good { border-color: var(--good); }
.insights li.bad { border-color: var(--bad); }
.insights li b { color: var(--text); }
.drill-crumbs { display: flex; gap: .3rem; align-items: center; font-size: .82rem; flex-wrap: wrap; }
.drill-crumbs button { background: none; border: 0; color: var(--accent-text); cursor: pointer; font-weight: 700; padding: 0; }
:root[data-theme="dark"] .drill-crumbs button { color: var(--accent); }
.span2 { grid-column: span 2; }
.corr-stats { display: flex; gap: .6rem; flex-wrap: wrap; margin-bottom: .6rem; }
.corr-stats div { background: var(--surface-2); border-radius: 8px; padding: .35rem .7rem; font-size: .82rem; }

/* ---------- Case study / project pages ---------- */
.cs-grid { display: grid; grid-template-columns: 260px 1fr; gap: 2rem; align-items: start; }
.cs-toc { position: sticky; top: calc(var(--nav-h) + 16px); display: grid; gap: .2rem; }
.cs-toc a { padding: .4rem .7rem; border-radius: 8px; color: var(--muted); font-size: .88rem; font-weight: 600; border-inline-start: 2px solid var(--border); }
.cs-toc a:hover { color: var(--text); border-color: var(--accent); }
.cs-block { margin-bottom: 1.8rem; }
.cs-block h3 { display: flex; align-items: center; gap: .5rem; font-size: 1.1rem; }
.cs-block h3 .n { font-size: .8rem; background: var(--accent); color: var(--on-accent); border-radius: 6px; padding: .05rem .45rem; }
.cs-block ul { padding-inline-start: 1.2rem; display: grid; gap: .35rem; color: var(--text-2); }
.project-card { display: flex; flex-direction: column; gap: .6rem; }
.project-card .pc-top { display: flex; justify-content: space-between; gap: .5rem; align-items: center; flex-wrap: wrap; }
.project-card .pc-cat { font-size: .75rem; color: var(--muted); font-weight: 700; }
.project-card .pc-q { background: var(--surface-2); border-radius: 10px; padding: .6rem .8rem; font-size: .88rem; color: var(--text-2); border-inline-start: 3px solid var(--accent); }
.filter-tabs { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: 1.4rem; }
.filter-tabs button { background: var(--surface); border: 1px solid var(--border); color: var(--text-2); padding: .42rem .9rem; border-radius: 999px; cursor: pointer; font-weight: 600; font-size: .86rem; }
.filter-tabs button.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.filter-tabs button .num { opacity: .7; font-size: .75rem; margin-inline-start: .25rem; }

/* ---------- Journey / timeline / impact ---------- */
.flow-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: .6rem; counter-reset: step; }
.flow-steps .fs { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1rem; }
.flow-steps .fs::before { counter-increment: step; content: counter(step); font-family: var(--mono); width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-size: .85rem; margin-bottom: .6rem; }
.flow-steps .fs h4 { margin-bottom: .2rem; }
.flow-steps .fs p { font-size: .85rem; }
.impact-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: .9rem; }
.impact { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem; position: relative; overflow: hidden; }
.impact .i-num { font-family: var(--mono); font-size: .8rem; color: var(--muted); }
.impact h4 { margin: .2rem 0 .4rem; }
.impact p { font-size: .88rem; }
.skill-groups { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: .9rem; }
.skill-group { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 1.1rem; }
.skill-group h4 { margin-bottom: .7rem; display: flex; align-items: center; gap: .5rem; }
.skill-group h4 i { width: 10px; height: 10px; border-radius: 3px; background: var(--accent); display: inline-block; }

/* ---------- Lifecycle ---------- */
.lifecycle { display: grid; grid-template-columns: repeat(7, 1fr); gap: .5rem; position: relative; }
.lc-node {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: .9rem .6rem; text-align: center; cursor: pointer;
  transition: border-color .2s, transform .2s var(--ease), background .2s; position: relative;
}
.lc-node:hover { transform: translateY(-3px); border-color: var(--accent); }
.lc-node.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.lc-node.on small { color: var(--on-accent); opacity: .75; }
.lc-node .lc-i { font-size: 1.4rem; display: block; margin-bottom: .3rem; }
.lc-node b { display: block; font-size: .88rem; line-height: 1.3; }
.lc-node small { font-family: var(--mono); font-size: .7rem; color: var(--muted); }
.lc-node:not(:last-child)::after { content: "→"; position: absolute; inset-inline-end: -.55rem; top: 50%; transform: translateY(-50%); color: var(--accent-text); font-weight: 800; z-index: 1; }
html[dir="rtl"] .lc-node:not(:last-child)::after { content: "←"; }
.lc-detail { margin-top: 1.2rem; display: grid; grid-template-columns: 1.3fr 1fr; gap: 1rem; }

/* ---------- KPI library & knowledge ---------- */
.lib-tools { display: flex; gap: .8rem; flex-wrap: wrap; align-items: center; margin-bottom: 1rem; }
.lib-tools .search { flex: 1; min-width: 220px; position: relative; }
.lib-tools .search input { padding-inline-start: 2.2rem; height: 44px; font-size: .95rem; }
.lib-tools .search::before { content: "⌕"; position: absolute; inset-inline-start: .8rem; top: 50%; transform: translateY(-52%); color: var(--muted); font-size: 1.1rem; }
.kpi-list { display: grid; gap: .6rem; }
.kcard { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.kcard > button { width: 100%; background: none; border: 0; cursor: pointer; display: grid; grid-template-columns: auto 1fr auto; gap: .9rem; align-items: center; padding: .85rem 1rem; text-align: start; }
.kcard .k-abbr { font-family: var(--mono); background: var(--accent-soft); color: var(--text); border-radius: 8px; padding: .25rem .55rem; font-size: .82rem; min-width: 64px; text-align: center; }
.kcard .k-names b { display: block; font-size: .98rem; }
.kcard .k-names small { color: var(--muted); font-size: .82rem; }
.kcard .k-dir { font-size: .76rem; color: var(--muted); display: flex; gap: .5rem; align-items: center; }
.kcard .chev { transition: transform .2s; color: var(--muted); }
.kcard.open .chev { transform: rotate(180deg); }
.kcard .k-body { display: none; padding: 0 1rem 1.1rem; border-top: 1px solid var(--border); }
.kcard.open .k-body { display: block; }
.k-body-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 1rem; }
.k-field small { display: block; color: var(--muted); font-size: .74rem; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; margin-bottom: .2rem; }
html[lang="ar"] .k-field small { text-transform: none; letter-spacing: 0; font-size: .8rem; }
.k-field p { font-size: .9rem; }
.formula { font-family: var(--mono); background: var(--surface-2); border: 1px solid var(--border); border-inline-start: 3px solid var(--accent); padding: .6rem .8rem; border-radius: 8px; font-size: .86rem; direction: ltr; text-align: left; color: var(--text); white-space: pre-wrap; }
.k-related { display: flex; gap: .4rem; flex-wrap: wrap; }
.k-related button { background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; padding: .15rem .65rem; font-family: var(--mono); font-size: .78rem; cursor: pointer; color: var(--text-2); }
.k-related button:hover { border-color: var(--accent); }
.dir-up { color: var(--good); } .dir-down { color: var(--good); } .dir-range { color: var(--neutral); }
.topic-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: .9rem; }
.vs { display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; }
.vs .x { font-size: .75rem; color: var(--muted); font-family: var(--mono); }
.topic-body { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1.5rem; align-items: start; }
.mistake { border-inline-start: 3px solid var(--bad); background: var(--bad-soft); padding: .5rem .8rem; border-radius: 8px; font-size: .9rem; color: var(--text); }
.mistakes { display: grid; gap: .5rem; }
.ex-box { background: var(--surface-2); border-radius: 12px; padding: 1rem; }
.ex-box .row { display: flex; justify-content: space-between; gap: 1rem; padding: .3rem 0; border-bottom: 1px dashed var(--border); font-size: .9rem; }
.ex-box .row:last-child { border: 0; font-weight: 700; color: var(--text); }
.ex-box .row span:last-child { font-family: var(--mono); direction: ltr; }

/* ---------- Academy ---------- */
.paths { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: .9rem; }
.path { display: flex; flex-direction: column; gap: .6rem; }
.path ol { padding-inline-start: 1.2rem; color: var(--text-2); font-size: .88rem; display: grid; gap: .15rem; }
.level { font-size: .72rem; font-weight: 700; padding: .1rem .55rem; border-radius: 999px; }
.level.l1 { background: var(--good-soft); color: var(--good); }
.level.l2 { background: var(--accent-soft); color: var(--accent-text); }
:root[data-theme="dark"] .level.l2 { color: var(--accent); }
.level.l3 { background: var(--bad-soft); color: var(--bad); }
.lesson-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: .8rem; }
.lesson { display: flex; flex-direction: column; gap: .45rem; }
.lesson .thumb { aspect-ratio: 16/9; border-radius: 10px; background: linear-gradient(135deg, var(--surface-3), var(--surface-2)); display: grid; place-items: center; position: relative; overflow: hidden; }
.lesson .thumb img { width: 100%; height: 100%; object-fit: cover; }
.lesson .thumb .cat-mark { font-family: var(--mono); font-weight: 500; font-size: 1.4rem; color: var(--accent-text); }
:root[data-theme="dark"] .lesson .thumb .cat-mark { color: var(--accent); }
.lesson .thumb .soon { position: absolute; bottom: 8px; inset-inline-start: 8px; font-size: .7rem; }
.video-box { aspect-ratio: 16/9; border-radius: 14px; overflow: hidden; background: var(--surface-2); border: 1px solid var(--border); position: relative; display: grid; place-items: center; }
.video-box iframe { width: 100%; height: 100%; border: 0; }
.video-box .play { width: 76px; height: 76px; border-radius: 50%; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-size: 1.8rem; border: 0; cursor: pointer; }
.video-box img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.video-box .play { position: relative; z-index: 1; }
.video-box .vb-msg { text-align: center; padding: 1.5rem; }
.objectives { list-style: none; display: grid; gap: .45rem; }
.objectives li { padding-inline-start: 1.6rem; position: relative; color: var(--text-2); }
.objectives li::before { content: "✓"; position: absolute; inset-inline-start: 0; color: var(--good); font-weight: 800; }
.cat-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: .7rem; }
.cat-tile { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: .9rem 1rem; cursor: pointer; text-align: start; transition: border-color .2s; }
.cat-tile:hover, .cat-tile.on { border-color: var(--accent); }
.cat-tile.on { background: var(--accent-soft); }
.cat-tile b { display: block; }
.cat-tile small { color: var(--muted); }

/* ---------- Calculator ---------- */
.calc { display: grid; grid-template-columns: 1.3fr 1fr; gap: 1.6rem; align-items: center; }
.calc-inputs { display: grid; gap: 1.1rem; }
.calc-inputs label { display: grid; gap: .3rem; font-size: .92rem; color: var(--text-2); }
.calc-inputs strong { color: var(--text); }
.calc-out { text-align: center; background: var(--surface-2); border-radius: 14px; padding: 1.6rem 1.2rem; }
.calc-out .big { font-size: clamp(1.8rem, 4vw, 2.6rem); color: var(--good); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 1.5rem; align-items: start; }
.channel { display: flex; gap: 1rem; align-items: center; }
.channel .ch-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--surface-2); flex-shrink: 0; }
.channel b { display: block; }
.channel small { color: var(--muted); word-break: break-all; }

/* ---------- Modal ---------- */
.modal { position: fixed; inset: 0; z-index: 250; background: rgba(5, 7, 10, .65); display: grid; place-items: center; padding: 16px; }
.modal-box { background: var(--page); border: 1px solid var(--border-strong); border-radius: 18px; width: min(980px, 100%); max-height: calc(100vh - 32px); overflow: auto; padding: 1.5rem; position: relative; box-shadow: var(--shadow); }
.modal-close { position: absolute; top: 12px; inset-inline-end: 12px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 2.4rem 0 1.6rem; margin-top: 3rem; background: var(--page-alt); }
.footer-grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 1.5rem; }
.footer h4 { font-size: .9rem; margin-bottom: .6rem; }
.footer a { display: block; color: var(--muted); font-size: .88rem; padding: .15rem 0; }
.footer a:hover { color: var(--text); }
.footer-bottom { border-top: 1px solid var(--border); margin-top: 1.6rem; padding-top: 1rem; display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; color: var(--muted); font-size: .82rem; }

/* ---------- Home: hero tag, data journey, behind ---------- */
.hero-tag { font-family: var(--font-en); font-weight: 700; color: var(--accent-text); margin: -.3rem 0 1rem; letter-spacing: .2px; }
:root[data-theme="dark"] .hero-tag { color: var(--accent); }
.lead-2 { margin-top: -.5rem; font-size: 1.02rem; }
.hero-sub span { font-family: var(--font-en); font-size: .82rem; letter-spacing: .3px; color: var(--text-2); background: var(--surface); border: 1px solid var(--border); padding: .3rem .8rem; border-radius: 999px; }
.dj { display: flex; align-items: stretch; justify-content: center; gap: .35rem; margin-bottom: 2rem; flex-wrap: wrap; }
.dj-step { flex: 1 1 150px; max-width: 214px; background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 1.1rem .8rem; text-align: center; display: flex; flex-direction: column; gap: .2rem; align-items: center; }
.dj-ico { width: 54px; height: 54px; border-radius: 15px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent-text); margin-bottom: .3rem; }
:root[data-theme="dark"] .dj-ico { color: var(--accent); }
.dj-step b { font-family: var(--font-en); font-size: .95rem; }
.dj-ar { color: var(--text); font-size: .9rem; font-weight: 700; }
.dj-step small { color: var(--muted); font-size: .72rem; font-family: var(--mono); }
.dj-arrow { display: flex; align-items: center; justify-content: center; flex: 0 0 26px; }
.dj-arrow i::before { content: "→"; color: var(--accent-text); font-weight: 800; font-size: 1.3rem; font-style: normal; }
html[dir="rtl"] .dj-arrow i::before { content: "←"; }
.power-grid { margin-top: .4rem; }
.behind { max-width: 820px; margin-inline: auto; }

/* ---------- Interactive tools ---------- */
.tool-card { display: flex; flex-direction: column; gap: .6rem; }
.tool-card.is-soon { opacity: .8; border-style: dashed; }
.tool-card.is-soon:hover { transform: none; border-color: var(--border); }
.chip.status-on { background: var(--good-soft); color: var(--good); border-color: transparent; font-weight: 700; }
.chip.status-soon { background: var(--surface-3); color: var(--text-2); }
.tool-feature { display: grid; grid-template-columns: 1.3fr 1fr; gap: 2rem; align-items: center; padding: 1.8rem; border-color: var(--accent); background: linear-gradient(135deg, var(--accent-soft), transparent 55%), var(--surface); }
.tool-feature:hover { transform: none; }
.tf-visual { border-radius: 14px; overflow: hidden; border: 1px solid var(--border); }
.tool-host { display: block; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }

/* ---------- About ---------- */
.focus-card { display: flex; gap: .8rem; align-items: center; padding: 1rem 1.1rem; }
.focus-card .c-ico { margin: 0; flex-shrink: 0; }
.focus-card b { font-size: .96rem; }
.stack-card h4 { display: flex; align-items: center; gap: .5rem; margin-bottom: .35rem; }
.stack-card h4 i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.exp-list { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; }
.exp-list li { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: .8rem 1rem .8rem 1rem; display: flex; gap: .7rem; align-items: flex-start; color: var(--text-2); }
.exp-list li::before { content: ""; flex-shrink: 0; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); margin-top: .55em; }
.exp-chip { display: inline-flex; align-items: center; gap: .5rem; background: var(--accent-soft); border: 1px solid var(--accent); color: var(--text); padding: .35rem .9rem; border-radius: 999px; font-size: .9rem; font-weight: 700; }
.dev-card { display: flex; gap: .8rem; align-items: center; padding: 1rem 1.1rem; }

/* ---------- Academy: YouTube channel ---------- */
.yt-box { display: grid; grid-template-columns: 1.1fr 1fr; gap: 2rem; align-items: center; padding: 1.8rem; border-color: var(--bad); background: linear-gradient(135deg, var(--bad-soft), transparent 55%), var(--surface); }
.yt-box:hover { transform: none; }
.yt-latest { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: .8rem; }

@media (max-width: 900px) { .tool-feature, .yt-box { grid-template-columns: 1fr; } .exp-list { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .dj-arrow { display: none; } .dj-step { flex: 1 1 42%; max-width: none; } }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s var(--ease), transform .5s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.page-enter { animation: pageIn .35s var(--ease); }
@keyframes pageIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ---------- Responsive ---------- */
@media (max-width: 1240px) {
  .nav-links { position: fixed; top: var(--nav-h); inset-inline: 0; flex-direction: column; align-items: stretch; background: var(--page); border-bottom: 1px solid var(--border); padding: .8rem 16px 1.2rem; display: none; max-height: calc(100vh - var(--nav-h)); overflow: auto; margin: 0; }
  .nav-links.open { display: flex; }
  .nav-links > a, .nav-links .dd > button { width: 100%; justify-content: space-between; padding: .7rem .8rem; }
  .dd-menu { position: static; display: none; box-shadow: none; border: 0; padding: 0 .6rem .4rem; background: transparent; }
  .dd.open .dd-menu { display: block; }
  .dd:hover .dd-menu { display: none; }
  .dd.open:hover .dd-menu { display: block; }
  .nav-toggle { display: inline-grid; }
  .nav-tools { margin-inline-start: auto; }
  .lifecycle { grid-template-columns: repeat(4, 1fr); }
  .lc-node:nth-child(4)::after { display: none; }
}
@media (max-width: 900px) {
  .hero-grid, .g2, .calc, .contact-grid, .cs-grid, .lc-detail, .topic-body, .k-body-grid { grid-template-columns: 1fr; }
  .pillars, .g3 { grid-template-columns: 1fr; }
  .g4 { grid-template-columns: repeat(2, 1fr); }
  .span2 { grid-column: auto; }
  .flow-steps { grid-template-columns: repeat(2, 1fr); }
  .persona { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cs-toc { position: static; display: flex; flex-wrap: wrap; }
  .hero { padding: 3rem 0; }
}
@media (max-width: 560px) {
  .g4, .footer-grid { grid-template-columns: 1fr; }
  .flow-steps, .lifecycle { grid-template-columns: 1fr 1fr; }
  .lc-node::after { display: none; }
  .hero-kpis { grid-template-columns: 1fr 1fr; }
  .kcard > button { grid-template-columns: auto 1fr; }
  .kcard .k-dir { display: none; }
  .section { padding: 3rem 0; }
  .filters { grid-template-columns: 1fr 1fr; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
  .kpi .k-val { font-size: 1.15rem; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}
@media print {
  .nav, .footer, .lab-bar { display: none; }
}