:root{
  --bg:#071a33; --panel:#0d2447; --panel-2:#1a3a6b; --term:#041226; --line:#24497d;
  --accent:#ffca1a; --accent-hover:#ffd84d; --accent-ink:#071a33;
  --text:#f6f9ff; --muted:#b3c3dc;
  --sans:"Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme:dark;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
*,*::before,*::after{box-sizing:inherit}
html{background:var(--bg);scroll-padding-top:env(safe-area-inset-top,0px);scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:400 1rem/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.wrap{width:100%;max-width:1120px;margin-inline:auto;padding-inline:clamp(1rem,4vw,2rem)}
.skip{position:absolute;left:1rem;top:-5rem;z-index:10;padding:.75rem 1rem;background:var(--accent);color:var(--accent-ink);font-weight:700;border-radius:6px;text-decoration:none}
.skip:focus{top:1rem}

/* monogram: logo, pengajian, and step markers share this one shape */
.mono{display:inline-grid;place-items:center;flex:none;width:2.25rem;height:2.25rem;border-radius:6px;background:var(--accent);color:var(--accent-ink);font:500 .95rem/1 var(--mono);letter-spacing:.02em}
.mono-lg{width:4rem;height:4rem;font-size:1.35rem;border-radius:8px}
.mono-off{background:transparent;color:var(--muted);border:1px dashed var(--muted)}
.mono-sm{width:1.75rem;height:1.75rem;font-size:.8rem;border-radius:5px}

/* header */
.site-head{display:flex;align-items:center;gap:1.5rem;padding-block:1rem}
.brand{display:inline-flex;align-items:center;gap:.7rem;min-height:44px;text-decoration:none;font-weight:800;font-size:1.05rem;letter-spacing:-.01em}
.site-nav{display:flex;gap:1.75rem;margin-left:auto}
.site-nav a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none;color:var(--muted);font-weight:600}
.site-nav a:hover{color:var(--text)}
.lang{display:inline-flex;gap:2px;padding:2px;border:1px solid var(--line);border-radius:8px}
.lang button{min-width:44px;min-height:40px;border:0;border-radius:6px;background:transparent;color:var(--muted);font:600 .85rem/1 var(--sans);cursor:pointer}
.lang button:hover{color:var(--text)}
.lang button[aria-pressed="true"]{background:var(--panel-2);color:var(--text)}
@media (max-width:640px){.site-nav{display:none}.lang{margin-left:auto}}

/* hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:clamp(2rem,5vw,4.5rem);align-items:center;padding-block:clamp(2.5rem,7vw,5rem) clamp(3.5rem,8vw,6rem)}
.hero h1{margin:0 0 1.25rem;max-width:12ch;font-size:clamp(2.4rem,5.4vw,4rem);line-height:1.04;letter-spacing:-.035em;font-weight:800}
.lead{margin:0 0 2rem;max-width:40ch;color:var(--muted);font-size:clamp(1.05rem,1.6vw,1.2rem)}
.actions{display:flex;flex-wrap:wrap;gap:.75rem}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:.75rem 1.25rem;border:1px solid transparent;border-radius:6px;font-weight:700;font-size:1rem;text-decoration:none}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{background:var(--accent-hover)}
.btn-ghost{border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--muted)}
@media (max-width:880px){.hero{grid-template-columns:minmax(0,1fr)}}

/* working terminal */
.term{overflow:hidden;background:var(--term);border:1px solid var(--line);border-radius:10px;box-shadow:0 28px 60px -28px rgba(0,0,0,.7)}
.term-bar{display:flex;justify-content:space-between;gap:1rem;padding:.65rem 1rem;border-bottom:1px solid var(--line);color:var(--muted);font:400 .8rem/1.4 var(--mono)}
.term-out{height:15.5rem;overflow-y:auto;padding:1rem 1rem .25rem;font:400 .9rem/1.65 var(--mono);white-space:pre-wrap;overflow-wrap:break-word}
.p{color:var(--accent)}
.dim{color:var(--muted)}
.term-out a{color:var(--accent);text-underline-offset:3px}
.term-row{display:flex;align-items:center;gap:.6rem;padding:.25rem 1rem .9rem;font:400 .9rem/1.65 var(--mono)}
.term-row input{flex:1;min-width:0;padding:.35rem .25rem;background:transparent;border:0;color:var(--text);font:inherit;caret-color:var(--accent)}
.term-try{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;padding:.75rem 1rem;border-top:1px solid var(--line);background:var(--panel)}
.term-try>span{margin-right:.25rem;color:var(--muted);font-size:.85rem}
.chip{min-height:44px;padding:.4rem .8rem;border:1px solid var(--line);border-radius:4px;background:var(--panel-2);color:var(--text);font:500 .85rem/1 var(--mono);cursor:pointer}
.chip:hover{border-color:var(--accent)}
@media (max-width:480px){.term-prompt-host{display:none}}
html:not(.js) .term-row,html:not(.js) .term-try{display:none}

/* sections */
.section{padding-block:clamp(3.5rem,8vw,6rem);border-top:1px solid var(--line)}
.section h2{margin:0 0 .75rem;font-size:clamp(1.75rem,3.2vw,2.5rem);line-height:1.12;letter-spacing:-.025em;font-weight:800}
.section-lead{margin:0 0 2.5rem;max-width:52ch;color:var(--muted)}

/* pengajian */
.featured{display:grid;grid-template-columns:auto minmax(0,1fr);gap:1.25rem 1.75rem;padding:clamp(1.5rem,3vw,2.25rem);background:var(--panel);border:1px solid var(--line);border-radius:12px}
.featured-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:.35rem 1rem}
.featured h3{margin:0;font-size:1.65rem;letter-spacing:-.02em;font-weight:800}
.status{display:inline-flex;align-items:center;gap:.35rem;color:var(--accent);font-size:.9rem;font-weight:600}
.status svg,.upcoming small svg,.demo-toast svg{width:1rem;height:1rem}
.featured-body>p{margin:.75rem 0 0;max-width:62ch;color:var(--muted)}
.facts{display:flex;flex-wrap:wrap;gap:.5rem 2rem;margin:1.5rem 0 0;padding:0;list-style:none;color:var(--muted)}
.facts b{margin-right:.35rem;color:var(--text);font-size:1.3rem;font-weight:800}
.featured-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem 1.5rem;margin-top:1.75rem}
.text-link{display:inline-flex;align-items:center;min-height:44px;font-weight:600;text-underline-offset:4px}
.text-link:hover{color:var(--accent)}
.note{margin:.75rem 0 0;color:var(--muted);font-size:.9rem}
@media (max-width:560px){.featured{grid-template-columns:minmax(0,1fr)}}

.upcoming{margin-top:2.75rem}
.upcoming h3{margin:0 0 1rem;color:var(--muted);font-size:1rem;font-weight:700}
.upcoming ul{display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));gap:.75rem;margin:0;padding:0;list-style:none}
.upcoming li{display:flex;align-items:center;gap:.9rem;padding:1rem 1.1rem;border:1px dashed var(--line);border-radius:10px}
.upcoming strong{display:block;font-weight:700}
.upcoming small{display:inline-flex;align-items:center;gap:.35rem;color:var(--muted);font-size:.85rem}

/* one session, illustrated */
.demo{margin:0;padding:clamp(1rem,2.5vw,1.5rem);background:var(--panel);border:1px solid var(--line);border-radius:12px}
.demo-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:1.25rem}
.demo-lesson,.demo-term{position:relative;padding:1.4rem 1.25rem 1.25rem;border-radius:8px}
.demo-lesson{background:var(--panel-2)}
.demo-term{background:var(--term)}
.demo .marker{position:absolute;top:-.7rem;left:-.7rem}
.demo-room{color:var(--muted);font-size:.8rem;font-weight:600}
.demo-lesson h3{margin:.3rem 0 .5rem;font-size:1.1rem}
.demo-lesson p{margin:0;color:var(--muted);font-size:.92rem}
.demo-lesson code{padding:.1em .35em;border-radius:3px;background:var(--term);color:var(--text);font:400 .85em var(--mono)}
.demo-hint{display:inline-block;margin-top:1rem;padding:.3rem .6rem;border:1px solid var(--line);border-radius:4px;color:var(--muted);font-size:.85rem}
.demo-term pre{margin:0;font:400 .82rem/1.7 var(--mono);white-space:pre-wrap;overflow-wrap:anywhere}
.demo-toast{position:relative;display:inline-flex;align-items:center;gap:.45rem;margin-top:1.1rem;padding:.5rem .8rem .5rem 1.4rem;border:1px solid var(--accent);border-radius:6px;background:var(--panel-2);font-size:.88rem;font-weight:600}
.demo-toast svg{color:var(--accent)}
.demo figcaption{margin-top:1rem;color:var(--muted);font-size:.82rem}
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.75rem;margin:2.25rem 0 0;padding:0;list-style:none}
.steps li{display:grid;grid-template-columns:auto minmax(0,1fr);gap:.2rem .85rem;align-items:start}
.steps .mono{grid-row:span 2}
.steps h3{margin:0;font-size:1.05rem;line-height:1.75rem}
.steps p{margin:0;color:var(--muted);font-size:.95rem}
@media (max-width:820px){.demo-grid,.steps{grid-template-columns:minmax(0,1fr)}.demo-grid{gap:1.75rem}}

/* footer */
.site-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem 2rem;padding-block:2rem;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
.site-foot .brand{color:var(--text);font-size:.95rem}
.site-foot p{margin:0}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* 404 page (DESIGN.md section 12). Not present in the mockup, which has no 404 page. */
.notfound{padding-block:clamp(3.5rem,10vw,7rem)}
.notfound h1{margin:0 0 1.25rem;max-width:18ch;font-size:clamp(2rem,4.4vw,3rem);line-height:1.08;letter-spacing:-.03em;font-weight:800}
.nf-line{margin:0 0 2rem;padding:.85rem 1rem;background:var(--term);border:1px solid var(--line);border-radius:10px;color:var(--muted);font:400 .9rem/1.65 var(--mono);overflow-wrap:break-word}
html:not(.js) .nf-line{display:none}