/* AI Joy Labs — shared styles for /labs/ experiment pages.
   Mirrors the main site design system (paper / ink / tangerine, Fraunces + Hanken Grotesk). */

:root{
  --paper:#FBF3E6;
  --paper-2:#F3E7D2;
  --ink:#211710;
  --ink-soft:#6A5847;
  --tangerine:#FF5A2C;
  --sunshine:#FFC033;
  --teal:#157A6A;
  --sky:#2E6CC4;
  --android:#3DDC84;
  --line:rgba(33,23,16,.16);
  --line-soft:rgba(33,23,16,.08);
  --shadow-soft:0 24px 60px -28px rgba(33,23,16,.5);
  --r:22px;
  --serif:"Fraunces",Georgia,serif;
  --sans:"Hanken Grotesk",-apple-system,sans-serif;
  --mono:"JetBrains Mono",monospace;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::after{
  content:"";
  position:fixed;inset:0;
  pointer-events:none;z-index:9999;
  opacity:.45;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}
::selection{background:var(--tangerine);color:var(--paper)}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
.wrap{width:min(1080px,92vw);margin-inline:auto}
.mono{font-family:var(--mono);font-size:.72rem;letter-spacing:.18em;text-transform:uppercase}

/* ---------- nav ---------- */
nav{
  position:sticky;top:0;z-index:100;
  background:rgba(251,243,230,.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:900;font-size:1.2rem;letter-spacing:-.02em}
.labs-chip{
  font-family:var(--mono);font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;
  background:var(--ink);color:var(--sunshine);border-radius:100px;padding:5px 12px;
}
.nav-back{font-weight:600;font-size:.9rem;color:var(--ink-soft)}
.nav-back:hover{color:var(--tangerine)}

/* ---------- hero ---------- */
.hero{padding:64px 0 48px;text-align:left}
.hero .eyebrow{
  display:inline-block;font-family:var(--mono);font-size:.7rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--tangerine);border:1.5px solid var(--tangerine);
  border-radius:100px;padding:6px 14px;margin-bottom:22px;
}
.hero h1{
  font-family:var(--serif);font-weight:900;
  font-size:clamp(2.3rem,5.6vw,3.8rem);line-height:1.05;letter-spacing:-.025em;
  max-width:18ch;
}
.hero h1 em{font-style:italic;font-weight:500;color:var(--tangerine)}
.hero .sub{
  font-size:clamp(1.02rem,2vw,1.2rem);color:var(--ink-soft);
  max-width:56ch;margin-top:18px;
}
.status-row{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:20px;font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft)}
.status-row b{color:var(--ink)}

/* ---------- CTA buttons ---------- */
.cta-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-weight:700;font-size:1rem;border-radius:100px;padding:15px 26px;
  border:2px solid var(--ink);cursor:pointer;font-family:var(--sans);
  transition:transform .18s ease,background .2s,color .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn svg{width:20px;height:20px;flex:none}
.btn-ios{background:var(--ink);color:var(--paper)}
.btn-ios:hover{background:var(--tangerine);border-color:var(--tangerine)}
.btn-android{background:transparent;color:var(--ink)}
.btn-android:hover{background:var(--ink);color:var(--paper)}
.cta-note{font-size:.82rem;color:var(--ink-soft);margin-top:12px}

/* ---------- sections ---------- */
section{padding:44px 0}
h2{
  font-family:var(--serif);font-weight:900;font-size:clamp(1.5rem,3.4vw,2.1rem);
  letter-spacing:-.02em;margin-bottom:10px;
}
.section-sub{color:var(--ink-soft);max-width:60ch;margin-bottom:26px}

/* feature cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.card{
  background:var(--paper-2);border:1.5px solid var(--line);border-radius:var(--r);
  padding:24px 22px;
}
.card .glyph{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  background:var(--ink);color:var(--sunshine);margin-bottom:14px;
  font-family:var(--serif);font-weight:900;font-size:1.2rem;
}
.card h3{font-weight:800;font-size:1.02rem;margin-bottom:6px}
.card p{font-size:.9rem;color:var(--ink-soft)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;counter-reset:step}
.step{
  background:transparent;border:1.5px dashed var(--line);border-radius:var(--r);
  padding:22px;position:relative;
}
.step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;color:var(--tangerine);
  display:block;margin-bottom:10px;
}
.step h3{font-weight:800;font-size:.98rem;margin-bottom:5px}
.step p{font-size:.88rem;color:var(--ink-soft)}

/* FAQ */
.faq details{
  border-bottom:1px solid var(--line);padding:16px 0;max-width:72ch;
}
.faq summary{
  font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px;
}
.faq summary::after{content:"+";font-family:var(--serif);color:var(--tangerine);font-size:1.2rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{color:var(--ink-soft);font-size:.92rem;margin-top:10px;max-width:66ch}

/* final CTA band */
.cta-band{
  background:var(--ink);color:var(--paper);border-radius:var(--r);
  padding:44px 36px;margin:24px 0 8px;
}
.cta-band h2{color:var(--paper)}
.cta-band p{color:rgba(251,243,230,.75);max-width:54ch}
.cta-band .btn-ios{background:var(--sunshine);color:var(--ink);border-color:var(--sunshine)}
.cta-band .btn-ios:hover{background:var(--tangerine);border-color:var(--tangerine);color:var(--paper)}
.cta-band .btn-android{color:var(--paper);border-color:var(--paper)}
.cta-band .btn-android:hover{background:var(--paper);color:var(--ink)}

/* labs hub cards */
.lab-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.lab-card{
  background:var(--paper-2);border:1.5px solid var(--line);border-radius:var(--r);
  padding:26px 24px;display:flex;flex-direction:column;gap:10px;
  transition:transform .18s ease,box-shadow .2s;
}
.lab-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-soft)}
.lab-card .tagline{font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;text-transform:uppercase;color:var(--tangerine)}
.lab-card h3{font-family:var(--serif);font-weight:900;font-size:1.35rem;letter-spacing:-.01em}
.lab-card p{font-size:.9rem;color:var(--ink-soft);flex:1}
.lab-card .go{font-weight:700;font-size:.9rem;color:var(--tangerine)}

/* footer */
footer{border-top:1px solid var(--line);margin-top:48px;padding:32px 0 48px}
.foot{display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;color:var(--ink-soft);font-size:.85rem}
.foot a:hover{color:var(--tangerine)}

/* ---------- waitlist modal ---------- */
.wl-modal{
  display:none;position:fixed;inset:0;z-index:1000;
  background:rgba(33,23,16,.55);backdrop-filter:blur(4px);
  overflow-y:auto;padding:24px;
}
.wl-content{
  background:var(--paper);border-radius:26px;max-width:460px;margin:6vh auto;
  padding:36px 32px 30px;position:relative;border:2px solid var(--ink);
}
.wl-close{
  position:absolute;top:14px;right:20px;font-size:1.6rem;cursor:pointer;
  color:var(--ink-soft);line-height:1;
}
.wl-close:hover{color:var(--tangerine)}
.wl-head{text-align:center;margin-bottom:22px}
.wl-badge{
  display:inline-block;font-family:var(--mono);font-size:.64rem;letter-spacing:.16em;
  text-transform:uppercase;background:var(--paper-2);border:1px solid var(--line);
  border-radius:100px;padding:5px 12px;margin-bottom:12px;color:var(--ink-soft);
}
.wl-head h2{font-family:var(--serif);font-weight:900;font-size:1.5rem;margin-bottom:6px}
.wl-sub{font-size:.9rem;color:var(--ink-soft)}
.wl-field{display:block;margin-bottom:16px}
.wl-label{display:block;font-weight:700;font-size:.85rem;margin-bottom:6px}
.wl-optional{font-weight:400;color:var(--ink-soft)}
.wl-field input[type=email],.wl-field textarea{
  width:100%;font-family:var(--sans);font-size:1rem;color:var(--ink);
  background:#fff;border:1.5px solid var(--line);border-radius:14px;padding:12px 14px;
}
.wl-field input:focus,.wl-field textarea:focus{outline:2px solid var(--tangerine);border-color:transparent}
.wl-invalid{border-color:#c0392b!important}
.wl-error{color:#c0392b;font-size:.8rem;display:block;margin-top:4px;min-height:1em}
.wl-hp{position:absolute;left:-9999px;opacity:0;height:0}
.wl-submit{
  width:100%;justify-content:center;background:var(--tangerine);color:var(--paper);
  border-color:var(--tangerine);position:relative;
}
.wl-submit:hover{background:var(--ink);border-color:var(--ink)}
.wl-submit.is-loading .wl-submit-label{visibility:hidden}
.wl-spinner{
  display:none;position:absolute;width:20px;height:20px;border-radius:50%;
  border:3px solid rgba(251,243,230,.4);border-top-color:var(--paper);
  animation:wl-spin .7s linear infinite;
}
.wl-submit.is-loading .wl-spinner{display:block}
@keyframes wl-spin{to{transform:rotate(360deg)}}
.wl-form-error{color:#c0392b;font-size:.85rem;margin-top:10px;text-align:center}
.wl-privacy{font-size:.75rem;color:var(--ink-soft);text-align:center;margin-top:14px}
.wl-success{text-align:center;padding:12px 0}
.wl-success-icon{
  width:56px;height:56px;border-radius:50%;background:var(--teal);color:#fff;
  display:grid;place-items:center;font-size:1.6rem;margin:0 auto 16px;
}
.wl-success h3{font-family:var(--serif);font-weight:900;font-size:1.3rem;margin-bottom:8px}
.wl-success p{color:var(--ink-soft);font-size:.92rem;max-width:34ch;margin:0 auto}

/* ---------- demo strip ---------- */
.demo-strip{display:flex;gap:14px;overflow-x:auto;padding-bottom:8px;-webkit-overflow-scrolling:touch}
.demo-strip video,.demo-strip img{height:440px;width:auto;border-radius:18px;border:1.5px solid var(--line);flex:none;background:var(--paper-2)}
.demo-wide img{width:100%;height:auto;border-radius:var(--r);border:1.5px solid var(--line)}
.demo-caption{font-family:var(--mono);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-top:10px}
@media(max-width:640px){.demo-strip video,.demo-strip img{height:340px}}

/* ---------- tutorial articles ---------- */
.crumb{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:18px;display:flex;gap:8px;flex-wrap:wrap}
.crumb a:hover{color:var(--tangerine)}
.article h2{margin-top:40px}
.article p{margin-bottom:14px;max-width:68ch}
.article ul,.article ol{margin:0 0 16px 22px;max-width:64ch}
.article li{margin-bottom:8px}
.tut-step{border-left:4px solid var(--tangerine);padding:6px 0 6px 20px;margin:24px 0}
.tut-step h3{font-weight:800;font-size:1.05rem;margin-bottom:6px}
.tut-step p{color:var(--ink-soft)}
.tip{background:var(--paper-2);border:1.5px solid var(--line);border-radius:14px;padding:16px 18px;margin:18px 0;font-size:.92rem;max-width:68ch}
.tip b{color:var(--tangerine)}
.tbl{overflow-x:auto;margin:18px 0;border:1.5px solid var(--line);border-radius:14px;background:var(--paper-2)}
.tbl table{border-collapse:collapse;width:100%;font-size:.88rem;min-width:420px}
.tbl th{font-family:var(--mono);font-size:.64rem;letter-spacing:.12em;text-transform:uppercase;text-align:left;color:var(--ink-soft);padding:12px 14px 8px;border-bottom:2px solid var(--ink);white-space:nowrap}
.tbl td{padding:10px 14px;border-bottom:1px solid var(--line)}
.tbl tr:last-child td{border-bottom:none}
.cta-inline{background:var(--paper-2);border:2px dashed var(--tangerine);border-radius:16px;padding:22px 24px;margin:28px 0;max-width:68ch}
.cta-inline h3{font-family:var(--serif);font-weight:900;font-size:1.15rem;margin-bottom:6px}
.cta-inline p{margin-bottom:14px;color:var(--ink-soft);font-size:.95rem}
.cta-note a{color:var(--tangerine);font-weight:700}

@media(max-width:640px){
  .hero{padding:44px 0 36px}
  .cta-row .btn{width:100%;justify-content:center}
  .cta-band{padding:32px 24px}
}