/* landing.css - the public "about" page at "/". Same nss tokens as the app,
   laid out like the other nih.ar apps (Natlas, Arthik): brand + Sign in, big lead, cards. */
body>.about{max-width:62rem;padding:1.25rem 1rem 4rem}
.about nav{display:flex;align-items:center;gap:.6rem;padding:.25rem 0 2rem}
.about .brand{display:flex;align-items:center;gap:.6rem;flex:1;font:750 1.2rem var(--nss-mono);color:var(--nss-fg);text-decoration:none;letter-spacing:-.02em}
.about .brand img{width:34px;height:34px;border-radius:8px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-height:2.4rem;padding:.5rem 1rem;
  border:1px solid var(--nss-line);border-radius:10px;background:var(--nss-surface-2);color:var(--nss-fg);
  font:600 .92rem var(--nss-sans);text-decoration:none;transition:border-color .2s,filter .2s}
.btn:hover{border-color:var(--nss-accent);color:var(--nss-fg)}
.btn.primary{background:var(--nss-accent);border-color:var(--nss-accent);color:var(--nss-on-accent)}
.btn.primary:hover{filter:brightness(1.1);color:var(--nss-on-accent)}

.lead{margin:.5rem 0 1rem;font-size:clamp(1.9rem,6vw,3.1rem);font-weight:800;line-height:1.1;letter-spacing:-.03em}
.lead em{font-style:normal;color:var(--nss-ink)}
.intro{max-width:44rem;font-size:1.08rem;color:var(--nss-muted)}
.cta{display:flex;flex-wrap:wrap;gap:.6rem;margin:1.4rem 0 .8rem}
.muted{color:var(--nss-muted);font-size:.92rem}

.about h2{margin:2.6rem 0 .7rem;font-size:1.35rem}
.about h3{margin:0 0 .4rem;font-size:1rem}

.card{padding:1rem 1.1rem;background:var(--nss-surface);border:1px solid var(--nss-line);border-radius:var(--nss-radius)}
.feat{display:grid;gap:.75rem;grid-template-columns:minmax(0,1fr);margin-top:1.8rem}
@media (min-width:640px){.feat{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:900px){.feat{grid-template-columns:repeat(3,minmax(0,1fr))}}
.feat .card h2{margin:0 0 .35rem;font-size:1.02rem;letter-spacing:-.01em}
.feat .card p{margin:0;color:var(--nss-muted);font-size:.92rem;line-height:1.55}

.two{display:grid;gap:.75rem;grid-template-columns:minmax(0,1fr)}
@media (min-width:760px){.two{grid-template-columns:repeat(2,minmax(0,1fr))}}
.two dl{display:grid;grid-template-columns:auto 1fr;gap:.3rem .8rem;margin:0;font-size:.88rem}
.two dt{font:600 .78rem var(--nss-mono);color:var(--nss-ink);padding-top:.15rem}
.two dd{margin:0;color:var(--nss-muted)}
.two pre{margin:0}

.table{overflow-x:auto}
.table table{display:table;width:100%}
.table td:first-child{white-space:nowrap;font-weight:600}
.table td:nth-child(2){white-space:nowrap}
.table td:last-child{color:var(--nss-muted)}

/* code blocks keep nss's terminal-window look; just no bleed on phones */
.about pre{margin:.4rem 0 1rem;font-size:.82rem;border:1px solid var(--nss-line);border-radius:10px}

.steps{list-style:none;counter-reset:step;padding:0;margin:1rem 0;display:grid;gap:.9rem}
.steps>li{counter-increment:step;position:relative;margin:0;padding:1rem 1.1rem 1rem 3.4rem;background:var(--nss-surface);border:1px solid var(--nss-line);border-radius:var(--nss-radius)}
.steps>li::before{content:counter(step);position:absolute;left:1rem;top:1rem;display:grid;place-items:center;width:1.7rem;height:1.7rem;border-radius:50%;
  background:var(--nss-accent);color:var(--nss-on-accent);font:700 .85rem var(--nss-mono)}
.steps p{margin:.3rem 0 0;color:var(--nss-muted);font-size:.92rem}
.steps pre{margin:.5rem 0 0}
@media (max-width:480px){.steps>li{padding-left:1rem;padding-top:3.1rem}}

.checks{list-style:none;padding:0;display:grid;gap:.4rem}
.checks li{margin:0;padding-left:1.6rem;position:relative;color:var(--nss-muted)}
.checks li::before{content:"✓";position:absolute;left:0;color:var(--nss-ok);font-weight:700}

.about footer{margin-top:3rem;padding-top:1.2rem;border-top:1px solid var(--nss-line);color:var(--nss-muted);font-size:.85rem}
.about footer a{color:inherit}
/* phones: each table row becomes a small stacked card */
@media (max-width:640px){
  .table table,.table tbody,.table tr,.table td{display:block;width:auto}
  .table thead{display:none}
  .table tr{padding:.7rem .2rem;border-bottom:1px solid var(--nss-line)}
  .table tr:last-child{border-bottom:0}
  .table td{border:0;padding:.1rem .8rem}
  .table td:nth-child(2){font-size:.85rem}
}
/* grid children must be allowed to shrink, so long code lines scroll inside
   their block instead of widening the page */
.steps>li,.two>*,.feat>*{min-width:0}
.about pre{max-width:100%}
@media (max-width:440px){.two dl{grid-template-columns:minmax(0,1fr)}.two dd{margin-bottom:.45rem}}
/* mnemos extras */
.about kbd{font:.78rem var(--nss-mono);padding:.05em .45em;border:1px solid var(--nss-line);border-bottom-width:2px;border-radius:5px;background:var(--nss-surface)}
.shot{margin:2rem 0 0;border:1px solid var(--nss-line);border-radius:var(--nss-radius);overflow:hidden;background:var(--nss-surface)}
.shot .bar{display:flex;gap:.4rem;align-items:center;padding:.55rem .8rem;border-bottom:1px solid var(--nss-line);font:.78rem var(--nss-mono);color:var(--nss-muted)}
.shot .bar i{width:.6rem;height:.6rem;border-radius:50%;background:var(--nss-line)}
.shot .bar b{margin-left:auto;color:var(--nss-ok);font-weight:500}
.shot .split{display:grid;grid-template-columns:minmax(0,1fr)}
@media (min-width:700px){.shot .split{grid-template-columns:repeat(2,minmax(0,1fr))}.shot .split>pre{border-right:1px solid var(--nss-line)}}
.shot .split>pre{margin:0;padding:1rem 1.2rem;border:0;border-radius:0;background:transparent;background-image:none;font-size:.8rem;line-height:1.65;white-space:pre-wrap}
.shot .out{padding:1rem 1.2rem;font-size:.92rem}
.shot .out h3{font-size:1.15rem;margin:0 0 .5rem}
.shot .out p{margin:0 0 .6rem}
.shot .out ul{margin:0 0 .6rem;padding-left:1.2rem}
.shot .out li.done{color:var(--nss-muted);text-decoration:line-through}
.not{display:grid;gap:.4rem;padding:0;list-style:none}
.not li{margin:0;padding-left:1.6rem;position:relative;color:var(--nss-muted)}
.not li::before{content:"–";position:absolute;left:.3rem;color:var(--nss-muted)}
/* brand: the nss "~/name_" logo */
.about .brand span::before{content:"~/";color:var(--nss-muted);font-weight:500}
.about .brand span::after{content:"_";color:var(--nss-accent);animation:blink 1.2s steps(1) infinite}
@keyframes blink{50%{opacity:0}}
@media (max-width:520px){.hide-sm{display:none}}
.shot .out .props{font:.74rem var(--nss-mono);color:var(--nss-muted);border:1px dashed var(--nss-line);border-radius:8px;padding:.35rem .6rem}
.shot .out ul.tasks{list-style:none;padding-left:0}
.shot .out ul.tasks li::before{content:"☐ ";color:var(--nss-accent)}
.shot .out ul.tasks li.done::before{content:"☑ "}

/* Android section */
.android{margin-top:3rem;padding:1.4rem 1.2rem;border:1px solid color-mix(in srgb,var(--nss-accent) 45%,var(--nss-line));border-radius:calc(var(--nss-radius) + 6px);
  background:radial-gradient(40rem 20rem at 100% 0,var(--nss-glow),transparent 70%),var(--nss-surface)}
.android h2{margin:.2rem 0 .7rem;font-size:clamp(1.4rem,4.4vw,2rem);line-height:1.15;letter-spacing:-.02em}
.android h2 em{font-style:normal;color:var(--nss-ink)}
.android .kicker{margin:0;font:700 .72rem var(--nss-mono);text-transform:uppercase;letter-spacing:.16em;color:var(--nss-ink)}
.a-head{display:grid;gap:1.5rem;grid-template-columns:minmax(0,1fr);align-items:center}
@media (min-width:820px){.a-head{grid-template-columns:minmax(0,1fr) 15rem}}
.a-head p{color:var(--nss-muted)}
.phone{position:relative;justify-self:center;width:14rem;height:24rem;padding:1rem .8rem;border-radius:2rem;background:var(--nss-bg);
  border:6px solid var(--nss-surface-2);box-shadow:0 20px 50px -20px var(--nss-glow),0 0 0 1px var(--nss-line);display:flex;flex-direction:column;gap:.55rem}
.ph-bar{display:flex;justify-content:space-between;align-items:center;padding:.2rem .3rem .4rem;font:700 .85rem var(--nss-mono);color:var(--nss-fg)}
.ph-bar i{font-style:normal;color:var(--nss-muted)}
.ph-card{display:flex;flex-direction:column;gap:.2rem;padding:.65rem .7rem;border-radius:14px;background:var(--nss-surface);border:1px solid var(--nss-line);font-size:.74rem;color:var(--nss-muted)}
.ph-card b{font-size:.82rem;color:var(--nss-fg)}
.ph-card.warn b{color:var(--nss-warn)}
.ph-fab{position:absolute;right:1rem;bottom:1rem;display:grid;place-items:center;width:3rem;height:3rem;border-radius:1rem;background:var(--nss-accent);color:var(--nss-on-accent);font:600 1.5rem/1 var(--nss-sans);box-shadow:var(--nss-shadow,0 8px 20px -8px #000)}
.feat.small{margin-top:1.2rem}
.feat.small .card{background:var(--nss-bg)}
.feat.small h3{margin:0 0 .3rem;font-size:.95rem}
.feat.small p{margin:0;color:var(--nss-muted);font-size:.88rem}
.android .sub{margin:1.8rem 0 .4rem;font-size:1.1rem}
.android .steps>li{background:var(--nss-bg)}
.build{margin-top:1rem;padding:.8rem 1rem;border:1px solid var(--nss-line);border-radius:var(--nss-radius);background:var(--nss-bg)}
.build summary{cursor:pointer;font-weight:600}
.build pre{margin-bottom:0}