/* OP-SYNTH website — palette and type mirror App/Theme.swift.
   System fonts only: no third-party requests (privacy). */
:root{
  --bg:#D8D8D8; --surface:#E8E8E8; --surface2:#F2F2F2; --white:#FFFFFF;
  --display:#1A1A1A; --darker:#0F0F0F; --display-fg:#F5F5F5; --amber:#FFC003; --dim:#9A9A9A; --display-green:#3DDC97;
  --ink:#0F0F0F; --ink2:#5E5E5E; --line:rgba(15,15,15,.12);
  --green:#1AA167; --blue:#1270B8; --red:#CE2021;
  --k-cutoff:#E84D2A; --k-reso:#2A3550; --k-env:#E9A86A; --k-lfo:#B8BCC0;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",system-ui,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html,body{background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body{overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
::selection{background:var(--ink);color:var(--bg)}

.label{font-family:var(--mono);text-transform:uppercase;letter-spacing:.14em;font-size:12px;font-weight:500;color:var(--ink2)}
.led{display:inline-block;width:8px;height:8px;border-radius:50%;vertical-align:middle;margin-right:10px}

/* NAV */
nav.top{position:fixed;inset:0 0 auto 0;z-index:100;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 40px;
  background:rgba(216,216,216,.78);backdrop-filter:saturate(140%) blur(20px);-webkit-backdrop-filter:saturate(140%) blur(20px);border-bottom:1px solid var(--line)}
.brand{font-family:var(--mono);font-weight:700;font-size:14px;letter-spacing:.16em;display:flex;align-items:center;gap:10px}
.brand img{width:26px;height:26px;border-radius:6px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2);transition:color .2s}
.nav-links a:hover{color:var(--ink)}
.nav-links a.nav-cta{color:var(--blue);font-weight:600}

section{padding:120px 40px;position:relative}
.wrap{max-width:1200px;margin:0 auto}
.narrow{max-width:760px;margin:0 auto}

h1,h2,h3{font-family:var(--sans);font-weight:700;letter-spacing:-.025em;line-height:1.04}
h2{font-size:clamp(34px,4.6vw,56px);margin:18px 0 24px}
h3{font-size:20px;letter-spacing:-.01em;line-height:1.2}
.lede{font-size:19px;line-height:1.6;color:var(--ink2);max-width:620px}
.lede strong{color:var(--ink);font-weight:600}

/* HERO */
.hero{padding:150px 40px 90px;text-align:center}
.hero h1{font-size:clamp(46px,8vw,104px);margin:22px 0 22px}
.hero .lede{margin:0 auto 40px;font-size:clamp(17px,1.7vw,21px)}
.hero-cta{display:flex;gap:22px;align-items:center;justify-content:center;flex-wrap:wrap;margin-bottom:70px}
.platforms{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2)}

/* Device frames */
.device{background:var(--darker);border-radius:28px;padding:12px;box-shadow:0 0 0 1px rgba(0,0,0,.1),0 40px 80px -30px rgba(0,0,0,.45),0 20px 40px -20px rgba(0,0,0,.2)}
.device img{border-radius:18px;width:100%;height:auto}
.device.phone{border-radius:34px;padding:10px}
.device.phone img{border-radius:26px}
.hero .device{max-width:1040px;margin:0 auto}
/* Mac screenshots already include the window chrome */
.window{border-radius:12px;overflow:hidden;box-shadow:0 0 0 1px rgba(0,0,0,.14),0 40px 80px -30px rgba(0,0,0,.5),0 20px 40px -20px rgba(0,0,0,.25)}
.window img{width:100%;height:auto}

/* Store badge */
.badge{display:inline-flex;align-items:center;gap:12px;background:var(--darker);color:#fff;padding:12px 22px;border-radius:12px;min-width:200px;transition:opacity .2s}
.badge:hover{opacity:.86}
.badge svg{width:22px;height:26px;fill:currentColor;flex-shrink:0}
.badge span{display:flex;flex-direction:column;text-align:left;line-height:1.1}
.badge small{font-size:10.5px;opacity:.85}
.badge strong{font-size:19px;font-weight:500;letter-spacing:-.01em}
.badge.light{background:#fff;color:var(--ink)}

/* Intro */
.intro{background:var(--white);padding:150px 40px}
.intro h2{font-size:clamp(30px,3.8vw,46px);line-height:1.15}

/* Two-column module */
.split{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.split.rev > .media{order:-1}
.media{display:flex;justify-content:center}
.media.portrait .device{max-width:460px}

.features{list-style:none;border-top:1px solid var(--line);margin-top:34px}
.features li{font-size:15.5px;line-height:1.5;padding:13px 0 13px 26px;border-bottom:1px solid var(--line);position:relative;color:var(--ink)}
.features li::before{content:"—";position:absolute;left:0;color:var(--ink2)}
.features li b{font-weight:600}

/* Dark sections (display panel look) */
.dark{background:var(--display);color:var(--display-fg)}
.dark .label{color:var(--amber)}
.dark .lede{color:var(--dim)}
.dark .lede strong{color:var(--display-fg)}
.dark .features{border-top-color:rgba(255,255,255,.1)}
.dark .features li{color:#D8D8D8;border-bottom-color:rgba(255,255,255,.1)}
.dark .features li::before{color:var(--dim)}

/* Beginner section */
.beginner{background:var(--white)}
.steps-row{display:flex;flex-wrap:wrap;gap:8px;margin:30px 0 6px}
.step{width:38px;height:38px;border-radius:50%;background:var(--darker);color:#fff;font-family:var(--mono);font-size:12px;font-weight:600;display:grid;place-items:center}
.step.done{background:var(--surface);color:var(--ink2);box-shadow:inset 0 0 0 1px var(--line)}
.step.next{background:var(--k-cutoff);box-shadow:0 0 0 6px rgba(232,77,42,.18)}
.how{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:80px}
.how .card{background:var(--surface2);border:1px solid var(--line);border-radius:16px;padding:26px}
.how .num{font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.12em;color:var(--k-cutoff);margin-bottom:28px;display:block}
.how p{font-size:14.5px;line-height:1.55;color:var(--ink2);margin-top:10px}
.picker{margin-top:80px}
.picker .window{max-width:960px;margin:0 auto}
.iphone-shot{margin-top:70px}
.iphone-shot .device{max-width:900px;margin:0 auto}
.caption{text-align:center;font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--ink2);margin-top:22px}

/* Bento */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:64px}
.cell{background:#242426;border:1px solid #333336;border-radius:16px;padding:30px;position:relative;overflow:hidden}
.cell.w2{grid-column:span 2}
.cell.w3{grid-column:1 / -1}
.cell .bar{position:absolute;left:0;top:0;bottom:0;width:3px}
.cell .label{display:block;margin-bottom:34px}
.cell h3{color:var(--display-fg);margin-bottom:12px}
.cell p{font-size:14.5px;line-height:1.55;color:var(--dim)}
.cell .giant{font-family:var(--mono);font-weight:700;font-size:clamp(64px,8vw,112px);letter-spacing:-.04em;line-height:.9;color:var(--display-fg);margin-bottom:12px}

/* MIDI */
.midi{background:var(--bg)}
.midi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:56px}
.midi-grid .card{background:var(--surface2);border:1px solid var(--line);border-radius:16px;padding:26px}
.midi-grid .card .label{display:block;margin-bottom:16px}
.midi-grid p{font-size:14.5px;line-height:1.55;color:var(--ink2)}
.midi-shot{margin-top:70px}
.midi-shot .device{max-width:1000px;margin:0 auto}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.06em;text-transform:uppercase;padding:6px 10px;border-radius:6px;background:var(--white);border:1px solid var(--line)}

/* Platforms */
.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:56px}
.platform-grid .card{background:var(--surface2);border:1px solid var(--line);border-radius:16px;padding:26px}
.platform-grid p{font-size:14.5px;line-height:1.55;color:var(--ink2);margin-top:10px}
kbd{font-family:var(--mono);font-size:12px;background:var(--white);border:1px solid var(--line);border-bottom-width:2px;border-radius:5px;padding:1px 6px}

/* CTA */
.cta{background:var(--darker);color:var(--display-fg);text-align:center;padding:160px 40px}
.cta h2{font-size:clamp(48px,8vw,100px)}
.cta .sub{color:var(--dim);font-size:18px;margin-bottom:44px}
.cta .label{color:var(--amber)}

/* Docs pages (support, privacy, impressum) */
.doc{padding:150px 40px 110px}
.doc h1{font-size:clamp(38px,5vw,58px);margin:16px 0 14px}
.doc .meta{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink2);margin-bottom:54px}
.doc h2{font-size:22px;letter-spacing:-.01em;margin:46px 0 12px}
.doc p,.doc li{font-size:16.5px;line-height:1.65;color:#2F2F2F}
.doc p + p{margin-top:12px}
.doc ul,.doc ol{padding-left:22px;margin-top:10px}
.doc li{margin:6px 0}
.doc a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.doc address{font-style:normal;font-size:16.5px;line-height:1.65}
details{background:var(--surface2);border:1px solid var(--line);border-radius:14px;padding:18px 22px;margin:12px 0}
details summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";font-family:var(--mono);color:var(--ink2)}
details[open] summary::after{content:"–"}
details > *:not(summary){margin-top:12px}
.contact-box{background:var(--display);color:var(--display-fg);border-radius:16px;padding:28px;margin-top:40px}
.contact-box p{color:var(--dim)}
.contact-box a{color:var(--amber)}

/* FOOTER */
footer{background:var(--darker);color:var(--dim);border-top:1px solid #2C2C2E;padding:30px 40px}
footer .row{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
footer span,footer a{font-family:var(--mono);text-transform:uppercase;letter-spacing:.12em;font-size:11px;font-weight:500}
footer nav{display:flex;gap:26px;flex-wrap:wrap}
footer a:hover{color:#fff}
footer .note{width:100%;text-transform:none;letter-spacing:0;font-family:var(--sans);font-size:12px;color:#6E6E6E;margin-top:6px}

/* Fade-in */
.fade{opacity:0;transform:translateY(22px);transition:opacity .9s cubic-bezier(.2,.7,.2,1),transform .9s cubic-bezier(.2,.7,.2,1)}
.fade.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.fade{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}
.no-js .fade{opacity:1;transform:none}

@media (max-width:960px){
  nav.top{padding:12px 20px}
  .nav-links{gap:16px}
  .nav-links a.hide-sm{display:none}
  section,.intro,.cta,.doc{padding-left:20px;padding-right:20px}
  section{padding-top:90px;padding-bottom:90px}
  .hero{padding-top:120px}
  .split{grid-template-columns:1fr;gap:50px}
  .split.rev > .media{order:0}
  .how,.midi-grid,.platform-grid{grid-template-columns:1fr 1fr}
  .bento{grid-template-columns:1fr}
  .cell.w2,.cell.w3{grid-column:span 1}
}
@media (max-width:600px){
  .how,.midi-grid,.platform-grid{grid-template-columns:1fr}
  .device{border-radius:18px;padding:7px}
  .device img{border-radius:12px}
}