/* Iksir School — identity from the IKSIR logo: graphite ground, ivory type, one red accent (the K),
   thin rectangular frames cut by a label on their top edge.
   Layout: editorial single column; lesson pages = vertical video on top, full written lesson below,
   sticky lesson list beside it on wide screens. Deliberately single dark theme (brand look). */

:root {
  --bg: #23252B;          /* graphite ground */
  --bg-alt: #1C1E23;      /* charcoal bands, header */
  --card: #2A2D34;        /* panels */
  --fg: #F2EFE9;          /* ivory type */
  --fg-soft: #D7D3CB;
  --muted: #A8A49B;
  --line: #3B3E46;
  --line-strong: rgba(242, 239, 233, .55); /* the logo frame */
  --accent: #EE2233;      /* the red K */
  --accent-deep: #C41A2A;
  --accent-ink: #FFFFFF;
  --ok: #7FD1A8;
  --warn-bg: #3A2026;
  --tip-bg: #1F2F28;
  --note-bg: #30333B;
  --code-bg: #17181C;
  --code-fg: #F2EFE9;
  --shadow: 0 14px 34px rgba(0, 0, 0, .35);
  --font-ar: "IBM Plex Sans Arabic", "Segoe UI", Tahoma, system-ui, sans-serif;
  --font-display: "Barlow Semi Condensed", "Arial Narrow", Impact, sans-serif;
  --radius: 4px;
  --wrap: 1120px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font-ar); font-size: 17px; line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img, video, iframe { max-width: 100%; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
h1, h2, h3, h4 { line-height: 1.3; margin: 0; text-wrap: balance; font-weight: 700; }
h1 { font-size: clamp(1.9rem, 4.5vw, 3rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.9rem); }
h3 { font-size: 1.15rem; }
p { margin: 0; }
.muted { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.wrap {
  max-width: var(--wrap); margin-inline: auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.narrow { max-width: 760px; }
.eyebrow { font-family: var(--font-display); letter-spacing: .12em; text-transform: uppercase; font-size: .85rem; color: var(--accent); font-weight: 600; }
.lead { font-size: 1.1rem; color: var(--fg-soft); max-width: 62ch; }

/* ---------- buttons & tags ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .7rem 1.3rem; border: 2px solid var(--line-strong); border-radius: var(--radius);
  font: inherit; font-weight: 600; cursor: pointer; background: transparent; color: var(--fg);
  transition: transform .15s ease, background .15s ease, color .15s ease;
  min-height: 44px;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--fg); border-color: var(--fg); color: var(--bg); }
.btn.ghost:hover { background: var(--fg); color: var(--bg); }
.btn[disabled] { opacity: .5; cursor: wait; transform: none; }
.cta-row { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.25rem; }
.tag { font-family: var(--font-display); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; padding: .1rem .45rem; border: 1.5px solid currentColor; border-radius: 3px; line-height: 1.5; white-space: nowrap; }
.tag.free { color: var(--ok); }
.tag.pro { color: var(--accent); }
.tag.lv { color: var(--muted); }

/* ---------- header ---------- */
.site-head { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1.5px solid var(--line-strong); }
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; }
.brand .mark { display: inline-flex; color: var(--fg); }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-ar { font-weight: 700; font-size: 1.05rem; }
.brand-la { font-family: var(--font-display); letter-spacing: .18em; font-size: .7rem; color: var(--muted); }
.site-nav { display: flex; gap: 1.4rem; font-weight: 600; }
.site-nav a { padding: .35rem 0; border-bottom: 2px solid transparent; }
.site-nav a[aria-current="page"] { border-color: var(--accent); }
.nav-toggle { display: none; background: none; border: 2px solid var(--line-strong); border-radius: var(--radius); width: 44px; height: 40px; padding: 8px 9px; cursor: pointer; flex-direction: column; justify-content: space-between; }
.nav-toggle span { display: block; height: 2px; background: var(--fg); }
@media (max-width: 720px) {
  .nav-toggle { display: flex; }
  .site-nav { position: absolute; inset-inline: 0; top: 100%; background: var(--bg); border-bottom: 1.5px solid var(--line-strong); flex-direction: column; gap: 0; padding: .5rem max(16px, env(safe-area-inset-left, 0px)); display: none; }
  .site-nav a { padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .site-nav.open { display: flex; }
}

/* ---------- hero ---------- */
.hero { padding-block: clamp(2.5rem, 7vw, 5rem); border-bottom: 1.5px solid var(--line-strong); }
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 2.5rem; align-items: center; }
.hero h1 { margin-block: .4rem .9rem; }
.hero-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.stat { border: 2px solid var(--line-strong); padding: 1rem 1.1rem; position: relative; background: var(--card); }
.stat::after { content: ""; position: absolute; inset-inline-start: 10px; top: 10px; width: 10px; height: 10px; background: var(--accent); }
.stat .n { display: block; font-family: var(--font-display); font-size: 2.8rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
.stat .l { color: var(--muted); font-size: .95rem; }
.continue { margin-top: 1.25rem; padding: .7rem 1rem; border-inline-start: 4px solid var(--accent); background: var(--card); }
.continue a { font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
@media (max-width: 820px) { .hero-grid { grid-template-columns: 1fr; } }

/* ---------- sections ---------- */
.section { padding-block: clamp(2.2rem, 6vw, 4rem); }
.section.alt { background: var(--bg-alt); }
.sec-title { margin-bottom: 1.4rem; position: relative; padding-inline-start: 1rem; }
.sec-title::before { content: ""; position: absolute; inset-inline-start: 0; top: .25em; bottom: .25em; width: 4px; background: var(--accent); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.step { border: 1.5px solid var(--line-strong); padding: 1.4rem; background: var(--card); display: flex; flex-direction: column; gap: .4rem; }
.step-n { font-family: var(--font-display); font-size: 2.4rem; font-weight: 700; color: var(--accent); line-height: 1; }
.levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.level-card { border: 2px solid var(--line-strong); background: var(--card); padding: 1.5rem; display: flex; flex-direction: column; gap: .6rem; position: relative; transition: transform .15s ease; }
.level-card:hover { transform: translateY(-3px); color: inherit; }
.level-card:hover .lv-more { color: var(--accent); }
.lv-count { font-family: var(--font-display); letter-spacing: .1em; font-size: .85rem; color: var(--accent); font-weight: 600; }
.lv-outcome { font-size: .92rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: .6rem; }
.lv-more { font-weight: 700; margin-top: auto; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: .55rem; }
.checks li { padding-inline-start: 1.7rem; position: relative; }
.checks li::before { content: "✓"; position: absolute; inset-inline-start: 0; color: var(--accent); font-weight: 700; }
.benefits { list-style: none; padding: 0; margin: 0; display: grid; gap: .45rem; }
.benefits li { padding-inline-start: 1.5rem; position: relative; }
.benefits li::before { content: ""; position: absolute; inset-inline-start: 0; top: .6em; width: 9px; height: 9px; background: var(--accent); }
details { border-top: 1px solid var(--line); padding-block: .9rem; }
details:last-of-type { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; font-weight: 700; list-style: none; display: flex; justify-content: space-between; gap: 1rem; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-family: var(--font-display); font-size: 1.4rem; color: var(--accent); line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin-top: .6rem; color: var(--fg-soft); }
@media (max-width: 820px) { .steps, .levels, .two-col { grid-template-columns: 1fr; } }

/* ---------- page head / curriculum ---------- */
.page-head { padding-block: clamp(2rem, 6vw, 3.5rem) 1.5rem; border-bottom: 1.5px solid var(--line-strong); }
.page-head h1 { margin-block: .3rem .6rem; }
.progress-all { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: center; margin-top: 1.2rem; max-width: 560px; }
.progress-all .bar { height: 10px; border: 1.5px solid var(--line-strong); background: var(--card); }
.progress-all .bar span { display: block; height: 100%; background: var(--accent); transition: width .3s ease; }
.progress-all .label { font-size: .95rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.search { display: block; margin-top: 1.2rem; max-width: 560px; }
.search input, .account input {
  width: 100%; font: inherit; padding: .75rem 1rem; border: 2px solid var(--line-strong); border-radius: var(--radius);
  background: var(--card); color: var(--fg); min-height: 48px;
}
.level-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; margin-bottom: 1.2rem; }
.level-progress { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; white-space: nowrap; border: 2px solid var(--line-strong); padding: .3rem .8rem; background: var(--card); font-variant-numeric: tabular-nums; }
.level-progress .of { color: var(--muted); font-size: 1rem; margin-inline-start: .3rem; }
.lesson-list { display: grid; gap: .7rem; }
.lesson-card {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1rem; align-items: center;
  border: 1.5px solid var(--line); background: var(--card); padding: .9rem 1rem; transition: border-color .15s ease, transform .15s ease;
}
.lesson-card:hover { border-color: var(--line-strong); transform: translateX(-3px); color: inherit; }
.lc-num { font-family: var(--font-display); font-size: 1.9rem; font-weight: 700; color: var(--accent); line-height: 1; min-width: 2.2ch; text-align: center; font-variant-numeric: tabular-nums; }
.lc-body { display: flex; flex-direction: column; min-width: 0; }
.lc-title { font-weight: 700; }
.lc-sum { color: var(--muted); font-size: .92rem; }
.lc-tags { display: flex; align-items: center; gap: .5rem; }
.lc-done { color: var(--ok); font-weight: 700; visibility: hidden; }
.lesson-card.done .lc-done { visibility: visible; }
.lesson-card.done .lc-num { color: var(--ok); }
.lesson-card.hidden { display: none; }
.outcome { margin-top: 1.2rem; padding: .8rem 1rem; background: var(--card); border-inline-start: 4px solid var(--accent); }
.no-results { padding-block: 2rem; color: var(--muted); }
@media (max-width: 560px) { .lesson-card { grid-template-columns: auto 1fr; } .lc-tags { grid-column: 2; } .level-head { flex-direction: column; } }

/* ---------- lesson ---------- */
.lesson-layout { display: grid; grid-template-columns: minmax(0, 1fr) 280px; gap: 3rem; padding-block: 2rem 4rem; align-items: start; }
.lesson { min-width: 0; max-width: 760px; }
.crumb { font-size: .92rem; color: var(--muted); font-weight: 600; }
.lesson-title-row { display: flex; align-items: flex-start; gap: 1rem; margin-top: .6rem; }
.big-num { font-family: var(--font-display); font-size: clamp(3rem, 8vw, 4.6rem); font-weight: 700; color: var(--accent); line-height: .9; font-variant-numeric: tabular-nums; }
.lesson-head .lead { margin-top: .8rem; }
.meta { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: .6rem 1.2rem; color: var(--muted); font-size: .92rem; align-items: center; }
.done-flag { color: var(--ok); font-weight: 700; }
.video { margin-top: 1.5rem; border: 2px solid var(--line-strong); background: var(--code-bg); aspect-ratio: 16 / 9; max-width: 100%; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.video iframe, .video video { width: 100%; height: 100%; border: 0; display: block; }
.toc { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; margin-block: 1.6rem 0; padding: .8rem 1rem; border: 1.5px solid var(--line); background: var(--card); }
.toc-label { font-weight: 700; margin-inline-end: .4rem; color: var(--muted); font-size: .9rem; }
.toc a { font-size: .9rem; padding: .15rem .6rem; border: 1px solid var(--line); border-radius: 999px; }
.toc a:hover { border-color: var(--accent); }
.lesson-body { margin-top: .5rem; }
.lesson-body > * + * { margin-top: 1rem; }
.lesson-body h2 { margin-top: 2.4rem; padding-top: .6rem; border-top: 2px solid var(--line-strong); font-size: 1.45rem; }
.lesson-body h3 { margin-top: 1.6rem; font-size: 1.12rem; color: var(--fg); }
.lesson-body h3::before { content: "■ "; color: var(--accent); font-size: .7em; }
.lesson-body p { max-width: 68ch; }
.lesson-body ul, .lesson-body ol { padding-inline-start: 1.4rem; display: grid; gap: .35rem; max-width: 68ch; }
.lesson-body li::marker { color: var(--accent); font-weight: 700; }
.lesson-body code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .9em; background: var(--note-bg); padding: .1em .4em; border-radius: 3px; }
.lesson-body strong { font-weight: 700; }
.prompt { margin: 1.2rem 0 0; border: 2px solid var(--line-strong); background: var(--code-bg); color: var(--code-fg); }
.prompt figcaption { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .45rem .9rem; border-bottom: 1px solid rgba(255,255,255,.14); font-size: .85rem; font-weight: 600; letter-spacing: .02em; color: var(--code-fg); }
.prompt figcaption span::before { content: "❝ "; color: var(--accent); }
.prompt .copy { font: inherit; font-weight: 700; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 3px; padding: .25rem .75rem; cursor: pointer; min-height: 32px; }
.prompt .copy.ok { background: var(--ok); }
.prompt pre { margin: 0; padding: 1rem; overflow-x: auto; white-space: pre-wrap; word-break: break-word; font-size: .98rem; line-height: 1.8; font-family: var(--font-ar); }
.prompt pre code { background: none; padding: 0; font-family: inherit; font-size: inherit; color: inherit; }
.prompt[data-kind="bash"] pre, .prompt[data-kind="file"] pre, .prompt[data-kind="json"] pre, .prompt[data-kind="js"] pre, .prompt[data-kind="python"] pre { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; direction: ltr; text-align: left; white-space: pre; }
.callout { padding: 1rem 1.1rem; border-inline-start: 4px solid var(--accent); background: var(--note-bg); }
.callout.warn { background: var(--warn-bg); }
.callout.tip { background: var(--tip-bg); border-inline-start-color: var(--ok); }
.callout > * + * { margin-top: .5rem; }
.table-wrap { overflow-x: auto; border: 1.5px solid var(--line); }
table { border-collapse: collapse; width: 100%; font-size: .95rem; min-width: 480px; }
th, td { padding: .6rem .8rem; border-bottom: 1px solid var(--line); text-align: start; vertical-align: top; }
th { background: var(--bg-alt); font-weight: 700; }
.lesson-foot { margin-top: 3rem; padding-top: 1.5rem; border-top: 2px solid var(--line-strong); display: grid; gap: 1.2rem; }
.lesson-foot [data-mark-done].done { background: var(--ok); border-color: var(--ok); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.pg { border: 1.5px solid var(--line); padding: .8rem 1rem; display: flex; flex-direction: column; min-width: 0; background: var(--card); }
.pg.next { text-align: end; border-color: var(--line-strong); }
.pg:hover { border-color: var(--accent); color: inherit; }
.pg-l { font-size: .8rem; color: var(--muted); }
.pg-t { font-weight: 700; }
.pg.empty { border: 0; background: none; }
.lesson-side { position: sticky; top: 84px; border: 1.5px solid var(--line); background: var(--card); padding: 1rem; max-height: calc(100vh - 100px); overflow: auto; }
.side-title { font-weight: 700; margin-bottom: .6rem; }
.side-list { list-style: none; padding: 0; margin: 0; display: grid; gap: .15rem; }
.side-list a { display: grid; grid-template-columns: auto 1fr auto; gap: .6rem; align-items: center; padding: .4rem .5rem; font-size: .92rem; border-radius: 3px; }
.side-list .sn { font-family: var(--font-display); font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.side-list .sd { color: var(--ok); visibility: hidden; }
.side-list li.done .sd { visibility: visible; }
.side-list li.current a { background: var(--bg-alt); font-weight: 700; }
.side-list li.current .sn { color: var(--accent); }
@media (max-width: 980px) { .lesson-layout { grid-template-columns: 1fr; } .lesson-side { position: static; max-height: none; } }
@media (max-width: 560px) { .pager { grid-template-columns: 1fr; } .pg.empty { display: none; } }

/* ---------- footer ---------- */
.site-foot { border-top: 1.5px solid var(--line-strong); padding-block: 2rem; margin-top: 2rem; color: var(--muted); font-size: .92rem; }
.site-foot .wrap { display: grid; gap: .8rem; }
.foot-brand { display: flex; gap: .6rem; align-items: baseline; color: var(--fg); }
.foot-social { display: flex; flex-wrap: wrap; gap: 1rem; font-family: var(--font-display); letter-spacing: .1em; text-transform: uppercase; font-size: .8rem; }
.foot-note { font-size: .82rem; }

/* ================================================================ IKSIR overrides */
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--bg-alt); }
.site-head { top: env(safe-area-inset-top, 0px); background: var(--bg-alt); border-bottom: 1px solid var(--line); }
.site-head .wrap { min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 14px; color: var(--fg); }
.brand:hover { color: var(--fg); }
.brand svg { height: 48px; width: auto; display: block; --knock: var(--bg-alt); }
.brand-ar { font-weight: 600; font-size: .9rem; color: var(--muted); border-inline-start: 1px solid var(--line); padding-inline-start: 14px; }
.site-nav { gap: .2rem; margin-inline-start: auto; }
.site-nav a { color: var(--muted); padding: .5rem .8rem; font-weight: 500; }
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--fg); border-bottom-color: var(--accent); }
.head-cta { min-height: 42px; padding: .55rem 1.1rem; }
.btn { border-width: 1.5px; }
.btn.primary:hover { background: var(--accent-deep); border-color: var(--accent-deep); color: var(--accent-ink); }
.btn.ghost { border-color: var(--line-strong); }
.btn.ghost:hover { background: transparent; border-color: var(--fg); color: var(--fg); }
@media (max-width: 760px) {
  .brand-ar { display: none; }
  .brand svg { height: 42px; }
  .head-cta { display: none; }
  .site-nav { background: var(--bg-alt); border-bottom: 1px solid var(--line); }
}

/* framed block: the logo rectangle cut by a label */
.framed { position: relative; border: 1.5px solid var(--line-strong); padding: 1.8rem 1.4rem 1.4rem; }
.framed > .cap { position: absolute; top: -.85em; inset-inline-start: 1rem; background: var(--bg); padding-inline: .6rem; font-size: .82rem; font-weight: 600; letter-spacing: .06em; color: var(--muted); line-height: 1.6; }
.alt .framed > .cap, .section.alt .framed > .cap { background: var(--bg-alt); }
.eyebrow { display: flex; align-items: center; gap: .75rem; color: var(--muted); }
.eyebrow::before { content: ""; width: 28px; height: 1.5px; background: var(--fg); flex: none; }
.hero h1 em, .page-head h1 em { font-style: normal; color: var(--accent); }
.sec-title { padding-inline-start: 0; }
.sec-title::before { display: none; }
.sec-head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; flex-wrap: wrap; margin-bottom: 1.6rem; }
.sec-head .sec-title { margin: 0; }
.sec-head p { color: var(--muted); max-width: 58ch; }

/* ---------- home hero ---------- */
.hero { border-bottom: 1px solid var(--line); }
.hero-grid { align-items: end; }
.prog .row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.prog .big { font-family: var(--font-display); font-weight: 700; font-size: 2.8rem; line-height: 1; font-variant-numeric: tabular-nums; }
.prog .big small { font-size: 1.1rem; color: var(--muted); font-weight: 600; }
.prog .track { height: 6px; background: var(--line); margin-top: 1rem; overflow: hidden; }
.prog .track span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .4s ease; }
.sbars { display: grid; gap: .55rem; margin-top: 1.1rem; }
.sbar { display: grid; grid-template-columns: 70px minmax(0, 1fr) 46px; gap: .7rem; align-items: center; font-size: .85rem; color: var(--muted); }
.sbar .tr { height: 4px; background: var(--line); }
.sbar .tr i { display: block; height: 100%; width: 0; background: var(--fg); transition: width .4s ease; }
.sbar b { font-weight: 600; text-align: end; font-variant-numeric: tabular-nums; }
.hero-figs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem; margin-top: 1.6rem; border-top: 1px solid var(--line); padding-top: 1.1rem; }
.hero-figs div { display: flex; flex-direction: column; }
.hero-figs .n { font-family: var(--font-display); font-weight: 700; font-size: 1.9rem; line-height: 1.05; font-variant-numeric: tabular-nums; }
.hero-figs .n.red { color: var(--accent); }
.hero-figs .l { font-size: .82rem; color: var(--muted); line-height: 1.45; }
.continue { background: var(--card); border-inline-start-color: var(--accent); }
@media (max-width: 560px) { .hero-figs { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 1rem; } }

/* ---------- home video strip ---------- */
.vstrip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(150px, 172px); gap: 1rem; overflow-x: auto; padding-bottom: .8rem; scroll-snap-type: x proximity; scrollbar-color: var(--line) transparent; }
.vcard { display: flex; flex-direction: column; gap: .35rem; scroll-snap-align: start; min-width: 0; }
.vcard:hover { color: var(--fg); }
.vc-img { position: relative; aspect-ratio: 9 / 16; border: 1.5px solid var(--line-strong); background: var(--code-bg); overflow: hidden; display: block; }
.vc-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .3s ease; }
.vcard:hover .vc-img img { transform: scale(1.04); }
.vcard:hover .vc-img { border-color: var(--accent); }
.vc-n { font-size: .78rem; color: var(--muted); font-weight: 600; }
.vc-t { font-weight: 700; font-size: .95rem; line-height: 1.45; }
.vc-done { font-size: .78rem; color: var(--ok); font-weight: 700; display: none; }
.vcard.done .vc-done { display: block; }
.vcard.done .vc-img { border-color: var(--ok); }

/* ---------- steps / levels in frames ---------- */
.step, .level-card { border: 1.5px solid var(--line-strong); background: transparent; }
.section.alt .level-card { background: var(--bg-alt); }
.level-card:hover { border-color: var(--fg); }
.level-card .lv-bars { margin-top: .2rem; }
.stat::after { display: none; }

/* ---------- lesson: video slot ---------- */
.video-slot { margin-top: 1.6rem; display: flex; flex-direction: column; gap: .6rem; width: 100%; max-width: 330px; }
.vs-frame { position: relative; aspect-ratio: 9 / 16; width: 100%; max-width: 100%; border: 1.5px solid var(--line-strong); background: var(--code-bg); overflow: hidden; }
.vs-frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.vs-poster { position: absolute; inset: 0; display: block; width: 100%; height: 100%; padding: 0; border: 0; background: var(--code-bg); cursor: pointer; color: var(--fg); font: inherit; }
.vs-poster img { width: 100%; height: 100%; object-fit: cover; display: block; transition: filter .2s ease; }
.vs-poster:hover img { filter: brightness(.82); }
.vs-play { position: absolute; top: 50%; left: 50%; width: 76px; height: 76px; margin: -38px 0 0 -38px; background: var(--accent); display: grid; place-items: center; box-shadow: var(--shadow); transition: transform .15s ease, background .15s ease; }
.vs-play::after { content: ""; border-style: solid; border-width: 13px 0 13px 21px; border-color: transparent transparent transparent var(--accent-ink); margin-left: 6px; }
.vs-poster:hover .vs-play { transform: scale(1.06); background: var(--accent-deep); }
.vs-play.sm { width: 44px; height: 44px; margin: -22px 0 0 -22px; }
.vs-play.sm::after { border-width: 8px 0 8px 13px; margin-left: 4px; }
.vs-hint { position: absolute; inset: auto 0 0 0; padding: .9rem 1rem; background: linear-gradient(to top, rgba(23, 24, 28, .92), rgba(23, 24, 28, 0)); font-weight: 600; font-size: .92rem; text-align: center; }
.vs-cap { display: flex; justify-content: space-between; gap: 1rem; font-size: .85rem; color: var(--muted); }
.vs-cap a { color: var(--fg); text-decoration: underline; text-underline-offset: 4px; text-decoration-color: var(--accent); }
.vs-soon { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .7rem; padding: 1.4rem; text-align: center; }
.vs-soon strong { font-size: 1.05rem; }
.vs-soon span { color: var(--muted); font-size: .9rem; line-height: 1.7; }
.vs-soon .btn { margin-top: .4rem; }
.vs-soon-mark { width: 54px; height: 54px; border: 1.5px solid var(--line-strong); position: relative; }
.vs-soon-mark::after { content: ""; position: absolute; inset: 15px; background: var(--accent); }
.read-below { display: flex; align-items: center; gap: .8rem; margin-top: 2rem; color: var(--muted); font-weight: 600; font-size: .92rem; }
.read-below::after { content: ""; flex: 1; height: 1px; background: var(--line); }

/* ---------- curriculum badges ---------- */
.tag.vid { color: var(--muted); border-color: var(--line); }
.tag.vid.has { color: var(--fg); border-color: var(--accent); }
.lesson-card { border-color: var(--line); }
.lesson-card:hover { border-color: var(--line-strong); }
.level-progress { border-width: 1.5px; border-color: var(--line-strong); }
.page-head, .hero { border-bottom-color: var(--line); }

/* ---------- lesson page tune-ups for the dark ground ---------- */
.lesson-body h2 { border-top: 1px solid var(--line-strong); }
.prompt { border: 1.5px solid var(--line-strong); }
.toc a { border-color: var(--line); }
.lesson-side { top: calc(env(safe-area-inset-top, 0px) + 88px); border-color: var(--line); }
.side-list li.current a { background: var(--bg-alt); box-shadow: inset -3px 0 0 var(--accent); }
.lesson-foot { border-top: 1px solid var(--line-strong); }
.pg.next { border-color: var(--line-strong); }
.site-foot { border-top: 1px solid var(--line); background: var(--bg-alt); padding-block: 2rem 2.6rem; color: var(--muted); font-size: .92rem; }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1rem 2rem; }
.foot-brand { display: flex; align-items: center; gap: 1rem; }
.foot-brand svg { height: 40px; width: auto; --knock: var(--bg-alt); }
.foot-brand a, .foot-social a { color: var(--fg); }
.foot-brand a:hover, .foot-social a:hover { color: var(--accent); }
.foot-social { display: flex; flex-wrap: wrap; gap: .4rem 1.1rem; font-family: var(--font-display); letter-spacing: .06em; }
.foot-note { flex-basis: 100%; font-size: .82rem; }
/* lessons without a video yet: compact notice instead of an empty 9:16 frame */
.video-slot.soon { max-width: 460px; }
.video-slot.soon .vs-frame { aspect-ratio: auto; }
.video-slot.soon .vs-soon { position: static; }

/* ================================================================ «جديد كلود» */
.nav-news { position: relative; }
.nav-news::after { content: ""; position: absolute; top: .45rem; inset-inline-end: .25rem; width: 7px; height: 7px; background: var(--accent); border-radius: 50%; }
.nk { display: inline-block; font-size: .74rem; font-weight: 600; padding: .05rem .5rem; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; line-height: 1.6; }
.nk-model { color: var(--accent); border-color: var(--accent); }
.nk-feature { color: var(--fg); border-color: var(--line-strong); }
.nk-dev { color: var(--ok); border-color: var(--ok); }

/* home: core lessons + news side by side */
.home-split { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 2.5rem; align-items: start; }
.home-main { min-width: 0; }
.more-link { display: inline-block; margin-top: .6rem; font-weight: 700; color: var(--fg); text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--accent); }
.news-side { display: flex; flex-direction: column; gap: 1rem; }
.news-all { align-self: flex-start; }
@media (max-width: 980px) { .home-split { grid-template-columns: 1fr; } }

.news-mini { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; }
.news-mini .nm-item + .nm-item { border-top: 1px solid var(--line); }
.news-mini a { display: flex; flex-direction: column; gap: .3rem; padding-block: .8rem; color: var(--fg); }
.news-mini a:hover .nm-title { color: var(--accent); }
.nm-meta { display: flex; align-items: center; gap: .6rem; font-size: .8rem; color: var(--muted); }
.nm-title { font-weight: 700; line-height: 1.5; font-size: .98rem; }
.news-mini.row { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; }
.news-mini.row .nm-item + .nm-item { border-top: 0; }
.news-mini.row .nm-item { border-inline-start: 2px solid var(--accent); padding-inline-start: .9rem; }
@media (max-width: 760px) { .news-mini.row { grid-template-columns: 1fr; } }

/* curriculum band */
.news-band { background: var(--bg-alt); border-bottom: 1px solid var(--line); padding-block: 1.4rem; }
.nb-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .4rem 1rem; margin-bottom: .6rem; }
.nb-head strong { font-size: 1.1rem; }
.nb-head span { color: var(--muted); font-size: .92rem; }
.nb-head a { margin-inline-start: auto; font-weight: 700; font-size: .92rem; }

/* lesson sidebar */
.side-news { margin-top: 1.2rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.side-news .nm-title { font-size: .9rem; }
.side-more { font-weight: 700; font-size: .9rem; color: var(--fg); }

/* full page */
.news-updated { margin-top: .9rem; color: var(--muted); font-size: .92rem; }
.news-updated b { color: var(--fg); }
.news-page { max-width: 880px; }
.news-filter { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.8rem; }
.chip { font: inherit; font-size: .9rem; font-weight: 600; color: var(--muted); background: transparent; border: 1.5px solid var(--line); padding: .45rem 1rem; cursor: pointer; min-height: 40px; border-radius: var(--radius); }
.chip:hover { color: var(--fg); border-color: var(--line-strong); }
.chip[aria-pressed="true"] { color: var(--fg); border-color: var(--accent); background: var(--card); }
.news-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line-strong); }
.news-item { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 1.6rem; padding-block: 1.8rem; border-bottom: 1px solid var(--line); scroll-margin-top: calc(env(safe-area-inset-top, 0px) + 90px); }
.ni-meta { display: flex; flex-direction: column; align-items: flex-start; gap: .5rem; }
.ni-meta time { font-family: var(--font-ar); font-weight: 700; font-size: .95rem; }
.ni-body { min-width: 0; display: flex; flex-direction: column; gap: .9rem; }
.ni-body h2 { font-size: 1.3rem; }
.ni-body dl { margin: 0; display: grid; gap: .7rem; }
.ni-body dl > div { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 1rem; }
.ni-body dt { color: var(--muted); font-weight: 600; font-size: .9rem; padding-top: .15rem; }
.ni-body dd { margin: 0; max-width: 64ch; color: var(--fg-soft); }
.ni-links { display: flex; flex-wrap: wrap; gap: .6rem 1.4rem; font-size: .9rem; }
.ni-lesson { font-weight: 700; color: var(--fg); text-decoration: underline; text-underline-offset: 5px; text-decoration-color: var(--accent); }
.ni-src { color: var(--muted); }
.news-note { margin-top: 1.6rem; color: var(--muted); font-size: .88rem; max-width: 70ch; }
@media (max-width: 640px) {
  .news-item { grid-template-columns: 1fr; gap: .7rem; }
  .ni-meta { flex-direction: row; align-items: center; }
  .ni-body dl > div { grid-template-columns: 1fr; gap: .1rem; }
}