/* ============================================================================
   Byrdie.AI — Premium homepage design system
   Black paper · white type · thin blueprint lines · editorial layout
   Self-hosted, no build step. Pairs with index.html.
   ========================================================================== */

:root {
  --black:#000000;
  --white:#ffffff;
  --panel:#0b0b0b;
  --panel-2:#101010;
  --line:rgba(255,255,255,.18);
  --line-strong:rgba(255,255,255,.45);
  --muted:rgba(255,255,255,.66);
  --soft:rgba(255,255,255,.06);
  --ink2:rgba(255,255,255,.82);
  --ink3:rgba(255,255,255,.5);
  --blue:#1D35FF;
  --green:#00D64F;
  --serif:"Instrument Serif", Georgia, serif;
  --sans:"Plus Jakarta Sans", system-ui, -apple-system, sans-serif;
  --maxw:1200px;
  --r:16px;
  --r-lg:22px;
}

* { box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }
body {
  margin:0;
  background:var(--black);
  color:var(--white);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a { color:inherit; text-decoration:none; }
img { max-width:100%; display:block; }
h1,h2,h3 { margin:0; font-weight:400; letter-spacing:-.01em; text-wrap:balance; }
p { margin:0; }
.hero-body, .sec-head p, .band p, .founder p, .final p { text-wrap:pretty; }

/* Keyboard focus — visible on a dark surface, never removed without replacement */
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline:2px solid var(--white); outline-offset:3px; border-radius:4px;
}
.btn:focus-visible { outline-offset:4px; border-radius:999px; }

/* Skip link */
.skip { position:absolute; left:-999px; top:8px; z-index:100; }
.skip:focus { left:16px; background:var(--white); color:#000; padding:10px 16px; border-radius:8px; font-weight:700; font-size:14px; }

/* First-load + scroll reveal. Enhancement only: without JS the body has no
   `.js` class, so everything renders fully visible (no blank sections on
   headless/SSR). Reduced-motion users get the visible default with no transform. */
body.js [data-reveal]{ opacity:0; transform:translateY(18px); transition:opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
body.js [data-reveal].in{ opacity:1; transform:none; }
body.js [data-reveal][data-reveal-delay="1"]{ transition-delay:.07s; }
body.js [data-reveal][data-reveal-delay="2"]{ transition-delay:.14s; }
body.js [data-reveal][data-reveal-delay="3"]{ transition-delay:.21s; }
@media (prefers-reduced-motion:reduce){
  body.js [data-reveal]{ opacity:1 !important; transform:none !important; transition:none !important; }
}

/* faint blueprint grid behind the whole page */
body::before {
  content:"";
  position:fixed; inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
  z-index:0;
}

.wrap { width:100%; max-width:var(--maxw); margin:0 auto; padding:0 28px; position:relative; z-index:1; }
.eyebrow {
  font-size:11.5px; font-weight:700; letter-spacing:.22em; text-transform:uppercase;
  color:var(--muted);
}
.serif { font-family:var(--serif); }

/* ───────────────── Buttons ───────────────── */
.btn {
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--sans); font-weight:700; font-size:15px; line-height:1;
  padding:15px 26px; border-radius:999px; border:1px solid transparent;
  cursor:pointer; transition:transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
  white-space:nowrap;
}
.btn:active { transform:translateY(1px); }
.btn-green { background:var(--green); color:#000; }
.btn-green:hover { background:#16e85c; transform:translateY(-2px); }
.btn-outline { background:transparent; color:var(--white); border-color:var(--line-strong); }
.btn-outline:hover { border-color:var(--white); background:var(--soft); }
.btn-ghost { background:transparent; color:var(--white); border-color:var(--line); padding:13px 22px; font-size:14px; }
.btn-ghost:hover { border-color:var(--line-strong); }
.btn-lg { padding:18px 34px; font-size:16px; }

/* ───────────────── Nav ───────────────── */
.nav {
  position:sticky; top:0; z-index:50;
  background:rgba(0,0,0,.72); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav-inner { display:flex; align-items:center; gap:28px; height:68px; }
.brand { font-family:var(--serif); font-size:26px; letter-spacing:-.02em; }
.brand b { font-weight:400; }
.brand .dot { color:var(--blue); }
.nav-links { display:flex; align-items:center; gap:26px; margin-left:18px; }
.nav-links a { font-size:14.5px; color:var(--muted); transition:color .15s ease; }
.nav-links a:hover { color:var(--white); }
.nav-cta { margin-left:auto; display:flex; align-items:center; gap:14px; }
.nav-login { font-size:14.5px; color:var(--muted); }
.nav-login:hover { color:var(--white); }
.nav-toggle { display:none; background:none; border:1px solid var(--line); border-radius:10px; padding:8px 10px; cursor:pointer; }
.nav-toggle span { display:block; width:20px; height:2px; background:var(--white); margin:4px 0; }

/* ───────────────── Section scaffold ───────────────── */
section { position:relative; z-index:1; }
.sec { padding:96px 0; border-top:1px solid var(--line); }
.sec-head { max-width:760px; margin-bottom:48px; }
.sec-head h2 { font-family:var(--serif); font-size:clamp(30px,4.6vw,52px); line-height:1.04; }
.sec-head p { color:var(--muted); font-size:16px; margin-top:16px; max-width:620px; }

/* ───────────────── Hero ───────────────── */
.hero { padding:clamp(70px,11vw,140px) 0 clamp(60px,8vw,110px); border-top:none; }
.hero .eyebrow { margin-bottom:22px; }
.hero h1 {
  font-family:var(--serif); font-size:clamp(46px,7.4vw,94px); line-height:1.0; letter-spacing:-.03em;
  max-width:15ch;
}
.hero-sub { font-size:clamp(17px,2.2vw,22px); color:var(--white); margin-top:26px; max-width:30ch; font-weight:500; }
.hero-body { font-size:16.5px; color:var(--muted); margin-top:18px; max-width:56ch; line-height:1.7; }
.hero-actions { display:flex; flex-wrap:wrap; gap:14px; margin-top:38px; }
.hero-meta { display:flex; flex-wrap:wrap; gap:28px; margin-top:48px; padding-top:30px; border-top:1px solid var(--line); }
.hero-meta div { display:flex; flex-direction:column; gap:4px; }
.hero-meta b { font-family:var(--serif); font-size:28px; }
.hero-meta span { font-size:12.5px; color:var(--muted); letter-spacing:.04em; }

/* ───────────────── Channel cards (Learn / Build / Scale) ───────────────── */
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
.card {
  background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:32px 28px; transition:transform .18s ease, border-color .18s ease, background .18s ease;
}
.card:hover { transform:translateY(-4px); border-color:var(--line-strong); background:var(--panel-2); }
.card .num { font-family:var(--serif); font-size:15px; color:var(--muted); letter-spacing:.1em; }
.card h3 { font-family:var(--serif); font-size:30px; margin:14px 0 10px; }
.card p { color:var(--muted); font-size:14.5px; line-height:1.65; }
.card .arrow { margin-top:22px; font-size:14px; color:var(--white); display:inline-flex; gap:8px; align-items:center; }
.card:hover .arrow { color:var(--green); }

/* ───────────────── Build list ───────────────── */
.build-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; }
.build-item { background:var(--black); padding:30px 26px; min-height:158px; display:flex; flex-direction:column; gap:10px; position:relative; transition:background .18s ease; }
.build-item::before { content:""; position:absolute; left:0; top:0; height:2px; width:0; background:var(--white); transition:width .25s cubic-bezier(.16,1,.3,1); }
.build-item:hover { background:var(--panel); }
.build-item:hover::before { width:46px; }
.build-item h4 { font-size:18.5px; font-weight:600; margin:0; letter-spacing:-.01em; line-height:1.25; }
.build-item p { font-size:13.5px; color:var(--muted); margin:0; line-height:1.55; }
.build-item .tail { margin-top:auto; font-size:13px; color:var(--muted); opacity:0; transform:translateX(-4px); transition:opacity .2s ease, transform .2s ease; }
.build-item:hover .tail { opacity:1; transform:none; }

/* ───────────────── Community band ───────────────── */
.band { background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg); padding:clamp(40px,6vw,72px); }
.band h2 { font-family:var(--serif); font-size:clamp(30px,4.6vw,50px); line-height:1.05; max-width:18ch; }
.band p { color:var(--muted); font-size:16px; margin-top:20px; max-width:60ch; line-height:1.7; }
.band .hero-actions { margin-top:32px; }

/* ───────────────── Pricing ───────────────── */
.price-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:18px; align-items:stretch; }
.price {
  background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg);
  padding:34px 28px; display:flex; flex-direction:column;
}
.price.featured { border-color:var(--white); background:linear-gradient(180deg,#141414,#0a0a0a); box-shadow:0 0 0 1px rgba(255,255,255,.06); }
.price .tag { font-size:11px; font-weight:700; letter-spacing:.18em; text-transform:uppercase; color:var(--blue); margin-bottom:14px; min-height:14px; }
.price.featured .tag { color:var(--green); }
.price h3 { font-family:var(--serif); font-size:26px; }
.price .amt { font-family:var(--serif); font-size:46px; margin:14px 0 2px; line-height:1; }
.price .per { font-size:13px; color:var(--muted); }
.price ul { list-style:none; padding:0; margin:22px 0 28px; display:flex; flex-direction:column; gap:11px; }
.price li { font-size:13.5px; color:var(--muted); display:flex; gap:10px; line-height:1.4; }
.price li::before { content:"—"; color:var(--line-strong); }
.price .btn { width:100%; justify-content:center; margin-top:auto; }
.price-consult {
  margin-top:18px; border:1px solid var(--line); border-radius:var(--r);
  padding:22px 26px; display:flex; align-items:center; gap:18px; flex-wrap:wrap; background:var(--soft);
}
.price-consult p { color:var(--muted); font-size:14.5px; }
.price-consult b { color:var(--white); font-weight:600; }
.price-consult .btn { margin-left:auto; }

/* ───────────────── Founder ───────────────── */
.founder { display:grid; grid-template-columns:.85fr 1.15fr; gap:clamp(28px,5vw,64px); align-items:stretch; }
/* Intentional monogram tile (brand object), not a placeholder for a missing photo.
   To use a real photo: replace .founder-portrait's inner with <img src="images/terell.jpg" alt="…"> */
.founder-portrait {
  aspect-ratio:4/5; border:1px solid var(--line); border-radius:var(--r-lg);
  background:linear-gradient(180deg,#0e0e0e,#050505);
  display:flex; flex-direction:column; justify-content:space-between; padding:26px; overflow:hidden;
}
.founder-portrait .mono { font-family:var(--serif); font-size:clamp(72px,12vw,128px); line-height:.9; letter-spacing:-.03em; }
.founder-portrait .mono .dot { color:var(--blue); }
.founder-portrait .cap { font-size:12.5px; color:var(--muted); letter-spacing:.04em; }
.founder-portrait img { width:100%; height:100%; object-fit:cover; border-radius:calc(var(--r-lg) - 1px); }
.founder h2 { font-family:var(--serif); font-size:clamp(28px,4vw,46px); line-height:1.05; }
.founder p { color:var(--muted); font-size:16px; margin-top:20px; line-height:1.75; }

/* ───────────────── Final CTA ───────────────── */
.final { text-align:center; padding:clamp(80px,12vw,150px) 0; }
.final h2 { font-family:var(--serif); font-size:clamp(38px,7vw,86px); line-height:1; letter-spacing:-.025em; max-width:16ch; margin:0 auto; }
.final p { color:var(--muted); font-size:17px; margin:22px auto 0; max-width:46ch; }
.final .hero-actions { justify-content:center; margin-top:36px; }

/* ───────────────── Footer ───────────────── */
.foot { border-top:1px solid var(--line); padding:64px 0 40px; }
.foot-top { display:flex; justify-content:space-between; gap:40px; flex-wrap:wrap; }
.foot .brand { margin-bottom:10px; }
.foot-tag { color:var(--muted); font-size:14px; }
.foot-cols { display:flex; gap:64px; flex-wrap:wrap; }
.foot-col h5 { font-size:12px; letter-spacing:.14em; text-transform:uppercase; color:var(--muted); margin:0 0 14px; font-weight:700; }
.foot-col a { display:block; font-size:14px; color:var(--white); opacity:.8; margin-bottom:10px; transition:opacity .15s ease; }
.foot-col a:hover { opacity:1; }
.foot-bottom { margin-top:48px; padding-top:24px; border-top:1px solid var(--line); display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap; font-size:12.5px; color:var(--muted); }

/* ───────────────── Responsive ───────────────── */
@media (max-width:960px){
  .grid-3, .build-grid, .price-grid { grid-template-columns:1fr 1fr; }
  .founder { grid-template-columns:1fr; gap:28px; }
}
@media (max-width:760px){
  .wrap { padding:0 20px; }
  .sec { padding:72px 0; }
  .nav-links, .nav-login { display:none; }
  .nav-toggle { display:block; }
  .nav.open .nav-links {
    display:flex; flex-direction:column; align-items:flex-start; gap:18px;
    position:absolute; top:68px; left:0; right:0; margin:0; padding:22px 24px;
    background:#000; border-bottom:1px solid var(--line);
  }
  .nav.open .nav-links a { font-size:18px; color:var(--white); }
  .grid-3, .build-grid, .price-grid { grid-template-columns:1fr; }
  .build-grid { gap:1px; }
  .hero-meta { gap:20px; }
  .price-consult .btn { margin-left:0; width:100%; justify-content:center; }
}
@media (prefers-reduced-motion:reduce){
  *, *::before, *::after { transition:none !important; scroll-behavior:auto !important; }
}

/* ============================================================================
   Subpages — About, Contact, Packages
   ========================================================================== */
.page-hero { padding:clamp(80px,11vw,140px) 0 clamp(36px,5vw,60px); border-top:none; }
.page-hero h1 { font-family:var(--serif); font-size:clamp(40px,7vw,82px); line-height:1; letter-spacing:-.03em; max-width:16ch; }
.page-hero p { color:var(--muted); font-size:17px; margin-top:20px; max-width:60ch; line-height:1.7; }

/* Stats / numbers */
.stats { display:grid; grid-template-columns:repeat(2,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--r-lg); overflow:hidden; max-width:560px; }
.stat { background:var(--black); padding:30px 26px; }
.stat b { font-family:var(--serif); font-size:clamp(40px,6vw,64px); line-height:1; display:block; }
.stat span { font-size:12.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--muted); margin-top:8px; display:block; }

/* Prose */
.prose { max-width:64ch; }
.prose p { color:var(--ink2); font-size:16.5px; line-height:1.8; margin-bottom:18px; }
.prose p strong { color:var(--white); font-weight:600; }

/* Client logos (placeholders until real assets dropped in) */
.clients-row { display:flex; flex-wrap:wrap; gap:14px; }
.client { flex:1 1 150px; min-height:78px; border:1px solid var(--line); border-radius:var(--r); display:flex; align-items:center; justify-content:center; color:var(--ink3); font-size:13px; font-weight:600; letter-spacing:.04em; background:var(--panel); }

/* Package cards */
.pkg-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(290px,1fr)); gap:16px; }
.pkg { display:flex; flex-direction:column; background:var(--panel); border:1px solid var(--line); border-radius:var(--r-lg); padding:30px 26px; transition:border-color .18s ease, transform .18s ease; }
.pkg:hover { border-color:var(--line-strong); transform:translateY(-3px); }
.pkg.featured { border-color:var(--white); }
.pkg .tag { font-size:10.5px; font-weight:700; letter-spacing:.16em; text-transform:uppercase; color:var(--blue); min-height:13px; margin-bottom:12px; }
.pkg.featured .tag { color:var(--green); }
.pkg h3 { font-family:var(--serif); font-size:27px; }
.pkg .blurb { color:var(--muted); font-size:13.5px; margin-top:8px; line-height:1.55; min-height:38px; }
.pkg .price { font-family:var(--serif); font-size:38px; margin:16px 0 2px; line-height:1; }
.pkg .price small { font-family:var(--sans); font-size:12px; font-weight:600; color:var(--muted); }
.pkg .term { font-size:11.5px; letter-spacing:.06em; text-transform:uppercase; color:var(--ink3); margin-bottom:18px; }
.pkg ul { list-style:none; padding:0; margin:0 0 24px; display:flex; flex-direction:column; gap:10px; }
.pkg li { font-size:13px; color:var(--ink2); display:flex; gap:10px; line-height:1.45; }
.pkg li::before { content:"—"; color:var(--line-strong); flex-shrink:0; }
.pkg .btn { width:100%; justify-content:center; margin-top:auto; }

/* Contact */
.contact-grid { display:grid; grid-template-columns:300px 1fr; gap:clamp(32px,6vw,80px); align-items:start; }
.contact-aside h4 { font-size:13px; letter-spacing:.06em; color:var(--muted); margin:0 0 14px; font-weight:700; }
.contact-aside ul { list-style:none; padding:0; margin:0 0 36px; display:flex; flex-direction:column; gap:7px; }
.contact-aside li { font-size:15px; font-weight:600; }
.contact-aside .big { font-family:var(--sans); font-size:clamp(20px,2.4vw,26px); font-weight:700; margin:0 0 10px; letter-spacing:-.01em; }
.contact-aside .big a:hover { color:var(--blue); }
.field { margin-bottom:30px; }
.field > label { display:block; font-size:11px; font-weight:700; letter-spacing:.14em; text-transform:uppercase; color:var(--ink2); margin-bottom:12px; }
.field > label sup { color:var(--ink3); font-weight:600; margin-left:4px; letter-spacing:0; }
.field input, .field textarea { width:100%; background:transparent; border:none; border-bottom:1px solid var(--line-strong); color:var(--white); font-family:var(--sans); font-size:15px; padding:8px 0 12px; transition:border-color .18s ease; }
.field input::placeholder, .field textarea::placeholder { color:var(--ink3); text-transform:uppercase; font-size:13px; letter-spacing:.03em; }
.field input:focus, .field textarea:focus { outline:none; border-bottom-color:var(--white); }
.field textarea { resize:vertical; min-height:80px; }
.svc-checks { display:grid; gap:12px; }
.svc-checks label { display:flex; align-items:center; gap:12px; font-size:12.5px; font-weight:700; letter-spacing:.08em; text-transform:uppercase; color:var(--ink2); cursor:pointer; }
.svc-checks input { appearance:none; -webkit-appearance:none; width:18px; height:18px; border:1px solid var(--line-strong); border-radius:4px; cursor:pointer; flex-shrink:0; position:relative; transition:all .15s ease; }
.svc-checks input:checked { background:var(--blue); border-color:var(--blue); }
.svc-checks input:checked::after { content:"✓"; position:absolute; inset:0; display:flex; align-items:center; justify-content:center; color:#fff; font-size:12px; font-weight:800; }
.svc-checks input:focus-visible { outline:2px solid var(--white); outline-offset:2px; }
.submit-btn { width:100%; background:var(--blue); color:#fff; border:none; padding:18px; border-radius:8px; font-family:var(--sans); font-size:14px; font-weight:800; letter-spacing:.12em; text-transform:uppercase; cursor:pointer; margin-top:12px; transition:filter .15s ease, transform .15s ease; }
.submit-btn:hover { filter:brightness(1.12); transform:translateY(-1px); }
@media (max-width:760px){
  .stats { grid-template-columns:1fr 1fr; }
  .contact-grid { grid-template-columns:1fr; }
}