/* CNC Cube – shared styles for the home page and the tools page.
   Legal pages (terms/privacy/contact) still use style.css. */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --ink:#0d151e;          /* deep blue-steel base */
  --panel:#15212c;        /* raised surfaces */
  --panel-2:#1c2a37;      /* inputs, rows */
  --line:#2a3a4a;         /* borders */
  --steel:#c4ced8;        /* primary text, brushed-steel tone */
  --muted:#8796a5;        /* secondary text */
  --edge:#5adcf0;         /* cyan edge light from the icon */
  --edge-dim:rgba(90,220,240,.14);
  --signal:#f2b544;       /* amber machine light, warnings only */
  --white:#f3f6f9;
  --display:'Chakra Petch',system-ui,sans-serif;
  --body:'IBM Plex Sans',system-ui,-apple-system,sans-serif;
  --wrap:1120px;
  --r-lg:22px;
  --r-md:12px;
  --r-sm:8px;
}

html{scroll-behavior:smooth;scroll-padding-top:84px;-webkit-text-size-adjust:100%}
body{
  font-family:var(--body);
  font-size:1.0625rem;
  line-height:1.6;
  color:var(--steel);
  background:var(--ink);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
a{color:var(--edge)}
:focus-visible{outline:2px solid var(--edge);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}

h1,h2,h3{font-family:var(--display);color:var(--white);font-weight:600;letter-spacing:-.01em}
h1{font-size:clamp(2.4rem,5.6vw,4.1rem);line-height:1.04}
h2{font-size:clamp(1.8rem,3.6vw,2.6rem);line-height:1.1}
h3{font-size:1.2rem;line-height:1.25}
.lede{font-size:1.2rem;color:var(--muted);max-width:34em}
.num{font-variant-numeric:tabular-nums}

/* ---------- Nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(13,21,30,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:600;font-size:1.15rem;color:var(--white);text-decoration:none}
.brand img{width:30px;height:30px;border-radius:8px}
.nav-links{display:flex;gap:28px;list-style:none;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;font-size:.95rem}
.nav-links a:hover{color:var(--white)}
.nav-cta{color:var(--ink)!important;background:var(--edge);padding:8px 16px;border-radius:999px;font-weight:600}
.nav-cta:hover{background:var(--white)}

/* ---------- App Store button ---------- */
.store{display:inline-flex;align-items:center;gap:12px;background:#000;color:#fff;border:1px solid #6b7682;border-radius:12px;padding:10px 22px 10px 16px;text-decoration:none;transition:border-color .15s,transform .15s}
.store:hover{border-color:var(--edge);transform:translateY(-1px)}
.store svg{width:30px;height:30px}
.store span{display:flex;flex-direction:column;line-height:1.1;font-family:-apple-system,'SF Pro Text',var(--body)}
.store small{font-size:.72rem;letter-spacing:.02em}
.store b{font-size:1.35rem;font-weight:600;letter-spacing:-.01em}

/* ---------- Hero ---------- */
.hero{position:relative;padding:72px 0 56px;overflow:hidden}
.hero::before{ /* machined-surface light falloff behind the cube */
  content:"";position:absolute;right:-10%;top:-20%;width:70%;height:140%;
  background:radial-gradient(closest-side,rgba(90,220,240,.10),transparent 70%);
  pointer-events:none;
}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center;position:relative}
.hero h1{margin-bottom:22px}
.hero .lede{margin-bottom:34px}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px 22px;align-items:center}
.hero-actions .ghost{color:var(--steel);text-decoration:none;font-weight:500;border-bottom:1px solid var(--line);padding-bottom:2px}
.hero-actions .ghost:hover{color:var(--white);border-color:var(--edge)}
.proof{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:34px;color:var(--muted);font-size:.95rem;list-style:none}
.proof li{display:flex;align-items:center;gap:8px}
.proof li::before{content:"";width:7px;height:7px;border-radius:2px;background:var(--edge);box-shadow:0 0 10px var(--edge)}

/* ---------- The cube ---------- */
.stage{height:440px;display:grid;place-items:center;perspective:1100px}
.cube{--s:230px;width:var(--s);height:var(--s);position:relative;transform-style:preserve-3d;transform:rotateX(-24deg) rotateY(38deg);animation:turn 26s linear infinite}
.face{
  position:absolute;inset:0;border-radius:18px;
  background:
    repeating-radial-gradient(circle at 50% 50%,rgba(255,255,255,.07) 0 1px,transparent 1px 4px),
    radial-gradient(circle at 50% 50%,#dfe6ec 0%,#a9b5c1 38%,#7d8c9b 70%,#5c6b7a 100%);
  box-shadow:inset 0 0 0 2px rgba(90,220,240,.9),inset 0 0 22px rgba(90,220,240,.45),0 0 34px rgba(90,220,240,.25);
}
.face::after{ /* center bore, like the icon */
  content:"";position:absolute;inset:34%;border-radius:50%;
  background:repeating-radial-gradient(circle,rgba(0,0,0,.18) 0 1px,transparent 1px 5px);
  box-shadow:inset 0 0 0 1px rgba(13,21,30,.25);
}
.f1{transform:translateZ(calc(var(--s)/2))}
.f2{transform:rotateY(180deg) translateZ(calc(var(--s)/2));filter:brightness(.75)}
.f3{transform:rotateY(90deg) translateZ(calc(var(--s)/2));filter:brightness(.82)}
.f4{transform:rotateY(-90deg) translateZ(calc(var(--s)/2));filter:brightness(.92)}
.f5{transform:rotateX(90deg) translateZ(calc(var(--s)/2));filter:brightness(1.08)}
.f6{transform:rotateX(-90deg) translateZ(calc(var(--s)/2));filter:brightness(.6)}
.shadow{position:absolute;width:260px;height:40px;border-radius:50%;background:radial-gradient(closest-side,rgba(90,220,240,.28),transparent);transform:translateY(200px);filter:blur(6px)}
@keyframes turn{to{transform:rotateX(-24deg) rotateY(398deg)}}

/* ---------- Sections ---------- */
.section{padding:96px 0}
.section-head{max-width:40em;margin-bottom:44px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--muted);font-size:1.15rem}
.band{background:var(--panel);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

/* ---------- Live demo ---------- */
.demo{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:var(--ink)}
.demo-in{padding:32px;display:grid;gap:18px;align-content:start}
.demo-out{padding:32px;background:linear-gradient(160deg,#122330,#0f1b25);border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:space-between;gap:24px}
.units{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;width:max-content}
.units button{font:inherit;font-size:.9rem;background:none;border:0;color:var(--muted);padding:6px 16px;border-radius:999px;cursor:pointer}
.units button[aria-pressed="true"]{background:var(--edge);color:var(--ink);font-weight:600}
.field{display:grid;gap:6px}
.field label{font-size:.92rem;color:var(--muted)}
.field .row{display:flex;align-items:stretch;background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r-sm)}
.field .row:focus-within{border-color:var(--edge)}
.field input,.field select{font:inherit;font-variant-numeric:tabular-nums;color:var(--white);background:transparent;border:0;padding:11px 12px;width:100%;min-width:0;outline:none}
.field select{appearance:none;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 52%,calc(100% - 13px) 52%;background-size:5px 5px;background-repeat:no-repeat;padding-right:36px}
.field select option{background:var(--panel)}
.field .unit{display:flex;align-items:center;padding:0 12px;color:var(--muted);font-size:.9rem;border-left:1px solid var(--line);white-space:nowrap}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.readout{display:grid;gap:22px}
.readout dt{color:var(--muted);font-size:.95rem;margin-bottom:2px}
.readout dd{font-family:var(--display);font-size:clamp(2.4rem,5vw,3.4rem);line-height:1;color:var(--white);font-variant-numeric:tabular-nums}
.readout dd small{font-family:var(--body);font-size:1rem;color:var(--edge);margin-left:8px}
.demo-note{font-size:.9rem;color:var(--muted)}
.demo-cta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding-top:22px;border-top:1px solid var(--line)}
.demo-cta p{color:var(--steel);font-size:.98rem;flex:1 1 200px}
.warn{color:var(--signal);font-size:.9rem;min-height:1.4em}

/* ---------- Calculator list ---------- */
.spec{border-top:1px solid var(--line)}
.spec-row{display:grid;grid-template-columns:72px 1fr 1.1fr;gap:24px;align-items:start;padding:28px 0;border-bottom:1px solid var(--line)}
.spec-icon{width:56px;height:56px;border-radius:14px;display:grid;place-items:center;background:var(--panel);border:1px solid var(--line);color:var(--edge)}
.spec-icon svg{width:28px;height:28px}
.spec-row h3{margin-bottom:6px}
.spec-row p{color:var(--muted)}
.formula{font-variant-numeric:tabular-nums;color:var(--steel);background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 14px;font-size:.98rem;align-self:center}
.formula i{font-style:italic;font-family:Georgia,'Times New Roman',serif}

/* ---------- Maker ---------- */
.maker{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.path{list-style:none;display:grid;gap:0;border-left:2px solid var(--line);margin-left:6px}
.path li{position:relative;padding:0 0 22px 24px;color:var(--muted)}
.path li:last-child{padding-bottom:0}
.path li::before{content:"";position:absolute;left:-7px;top:.45em;width:12px;height:12px;border-radius:50%;background:var(--ink);border:2px solid var(--line)}
.path li:last-child::before{border-color:var(--edge);background:var(--edge);box-shadow:0 0 12px var(--edge)}
.path b{color:var(--white);font-weight:600;display:block;font-family:var(--display);font-size:1.1rem}
.maker-copy p{margin-bottom:16px;max-width:34em}
.maker-copy p:last-child{margin-bottom:0}
.quote{font-family:var(--display);font-size:1.5rem;line-height:1.3;color:var(--white);margin-bottom:22px}

/* ---------- FAQ ---------- */
.faq{max-width:46em}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;padding:22px 40px 22px 0;font-family:var(--display);font-size:1.15rem;color:var(--white);position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:6px;top:50%;width:10px;height:10px;border-right:2px solid var(--edge);border-bottom:2px solid var(--edge);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq details p{padding:0 0 22px;color:var(--muted);max-width:40em}

/* ---------- Final CTA ---------- */
.final{text-align:center;padding:110px 0}
.final img{width:96px;height:96px;border-radius:22px;margin:0 auto 26px;box-shadow:0 0 50px rgba(90,220,240,.35)}
.final h2{margin-bottom:14px}
.final p{color:var(--muted);margin:0 auto 32px;max-width:30em;font-size:1.15rem}

/* ---------- Footer ---------- */
.footer{border-top:1px solid var(--line);padding:30px 0;font-size:.9rem;color:var(--muted)}
.footer .wrap{display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;align-items:center}
.footer nav{display:flex;flex-wrap:wrap;gap:8px 22px}
.footer a{color:var(--muted);text-decoration:none}
.footer a:hover{color:var(--white)}

/* ---------- Mobile download bar ---------- */
.dock{position:fixed;left:12px;right:12px;bottom:12px;z-index:60;display:none;align-items:center;gap:12px;padding:10px 10px 10px 12px;background:rgba(21,33,44,.94);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:16px;box-shadow:0 10px 30px rgba(0,0,0,.4);transform:translateY(140%);transition:transform .25s ease}
.dock.show{transform:none}
.dock img{width:40px;height:40px;border-radius:10px}
.dock div{flex:1;line-height:1.2}
.dock b{display:block;color:var(--white);font-family:var(--display);font-weight:600}
.dock small{color:var(--muted);font-size:.82rem}
.dock a{background:var(--edge);color:var(--ink);font-weight:600;text-decoration:none;padding:10px 18px;border-radius:10px}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .hero{padding:40px 0 24px}
  .hero .wrap{grid-template-columns:1fr;gap:8px}
  .stage{height:300px;order:-1}
  .cube{--s:150px}
  .shadow{width:170px;transform:translateY(135px)}
  .demo{grid-template-columns:1fr}
  .demo-out{border-left:0;border-top:1px solid var(--line)}
  .spec-row{grid-template-columns:56px 1fr;gap:16px}
  .spec-icon{width:48px;height:48px}
  .formula{grid-column:2}
  .maker{grid-template-columns:1fr;gap:40px}
  .section{padding:72px 0}
}
@media (max-width:640px){
  .wrap{padding:0 16px}
  .nav-links li.hide-sm{display:none}
  .nav-links{gap:16px}
  .demo-in,.demo-out{padding:22px}
  .pair{grid-template-columns:1fr 1fr;gap:10px}
  .dock{display:flex}
  .final{padding:80px 0 120px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .cube{animation:none}
  .dock{transition:none}
}