/* ════════════════════════════════════════════
   INSPHERE IDEAS — Shared Stylesheet
   Design system: Syne + Instrument Sans + JetBrains Mono
   Palette: warm parchment / charcoal / gold
════════════════════════════════════════════ */

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}

/* ── Tokens ── */
:root{
  --bg:#f4f3ef;
  --surface:#ffffff;
  --ink:#1a1917;
  --ink-2:#3d3c39;
  --ink-3:#7a7875;
  --ink-4:#b5b3af;
  --rule:#e0deda;
  --gold:#b08d4e;
  --gold-dim:#f5efe3;
  --gold-mid:#ddd0b8;
  --dark:#111110;
  --dark-2:#1e1e1c;
  --dark-3:#2a2a28;
  --f-display:'Syne',sans-serif;
  --f-body:'Instrument Sans',sans-serif;
  --f-mono:'JetBrains Mono',monospace;
  --max:1160px;
  --gutter:clamp(1.5rem,5vw,4rem);
  --nav-h:68px;
  --shadow-sm:0 1px 4px rgba(26,25,23,.06),0 1px 2px rgba(26,25,23,.04);
  --shadow-md:0 4px 20px rgba(26,25,23,.08),0 2px 6px rgba(26,25,23,.04);
  --shadow-lg:0 12px 48px rgba(26,25,23,.1),0 4px 16px rgba(26,25,23,.06);
  --ease:cubic-bezier(.4,0,.2,1);
  --t:.24s;
  --radius:2px;
}

/* ── Base ── */
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:1rem;
  line-height:1.7;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{cursor:pointer;font-family:inherit}

/* ── Layout ── */
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(5rem,9vw,9rem) var(--gutter)}

/* ── Type helpers ── */
.mono{font-family:var(--f-mono);font-size:.65rem;letter-spacing:.14em;text-transform:uppercase}
.eyebrow{
  font-family:var(--f-mono);
  font-size:.62rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
  display:flex;
  align-items:center;
  gap:.8rem;
  margin-bottom:1.2rem;
}
.eyebrow::before{
  content:'';
  width:24px;height:1px;
  background:var(--gold);
  flex-shrink:0;
}
.eyebrow.light{color:rgba(176,141,78,.75)}
.eyebrow.light::before{background:var(--gold);opacity:.6}

.display{
  font-family:var(--f-display);
  font-weight:700;
  letter-spacing:-.025em;
  line-height:1.05;
  color:var(--ink);
}
.display em{font-style:italic;font-weight:400;color:var(--ink-3)}
.display.light{color:#f4f3ef}
.display.light em{color:rgba(244,243,239,.35)}

/* ── Section label ── */
.s-label{
  font-family:var(--f-mono);
  font-size:.62rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--gold);
  margin-bottom:1rem;
  display:flex;
  align-items:center;
  gap:.8rem;
}
.s-label::after{
  content:'';
  flex:1;max-width:44px;height:1px;
  background:var(--gold);opacity:.4;
}

/* ── Divider ── */
.gold-rule{
  width:52px;height:3px;
  background:var(--gold);
  margin:2.2rem 0;
}

/* ── Buttons ── */
.btn{
  font-family:var(--f-mono);
  font-size:.68rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  padding:.8rem 2rem;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.btn svg{transition:transform var(--t)}
.btn:hover svg{transform:translateX(3px)}
.btn-dark{color:var(--surface);background:var(--ink)}
.btn-dark:hover{background:var(--gold);transform:translateY(-1px)}
.btn-gold{color:var(--dark);background:var(--gold)}
.btn-gold:hover{background:#c9a460;transform:translateY(-1px)}
.btn-outline{color:var(--ink);border:1px solid var(--rule);background:transparent}
.btn-outline:hover{border-color:var(--ink);background:var(--surface)}
.btn-outline-light{color:#f4f3ef;border:1px solid rgba(244,243,239,.2);background:transparent}
.btn-outline-light:hover{border-color:rgba(244,243,239,.5)}
.btn-outline-gold{color:var(--gold);border:1px solid var(--gold-mid);background:transparent}
.btn-outline-gold:hover{background:var(--gold-dim)}

/* ── Tag ── */
.tag{
  font-family:var(--f-mono);
  font-size:.58rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ink-4);
  border:1px solid var(--rule);
  padding:.22rem .65rem;
  background:var(--surface);
  display:inline-block;
}

/* ── Reveal ── */
.rv{
  opacity:0;
  transform:translateY(22px);
  transition:opacity .72s var(--ease),transform .72s var(--ease);
}
.rv.in{opacity:1;transform:translateY(0)}

/* ════════════════════
   NAVIGATION
════════════════════ */
.nav{
  position:fixed;top:0;left:0;right:0;
  z-index:300;
  height:var(--nav-h);
}
.nav-bg{
  position:absolute;inset:0;
  background:rgba(244,243,239,.94);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid transparent;
  transition:border-color var(--t);
}
.nav-bg.on{border-color:var(--rule)}
.nav-inner{
  position:relative;
  height:var(--nav-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem;
}
/* Logo */
.nav-logo{display:flex;align-items:center;gap:.85rem}
.nav-logo-wm{
  font-family:var(--f-display);
  font-size:1.05rem;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ink);
  line-height:1;
}
.nav-logo-wm span{
  display:block;
  font-size:.52rem;
  font-weight:400;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--ink-3);
  margin-top:2px;
}
/* Links */
.nav-links{display:flex;align-items:center;gap:2rem}
.nav-link{
  font-family:var(--f-mono);
  font-size:.62rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--ink-3);
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color var(--t),border-color var(--t);
}
.nav-link:hover,.nav-link.active{color:var(--ink);border-color:var(--ink)}
.nav-cta{
  font-family:var(--f-mono);
  font-size:.62rem;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--surface);
  background:var(--ink);
  padding:.5rem 1.3rem;
  transition:background var(--t);
}
.nav-cta:hover{background:var(--gold)}
/* Mobile */
.nav-mob-btn{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;border:none;
  padding:4px;
}
.nav-mob-btn span{
  display:block;width:22px;height:1.5px;
  background:var(--ink);
  transition:transform .3s,opacity .3s;
}
.nav-mob-menu{
  display:none;
  position:fixed;inset:0;
  background:var(--bg);
  z-index:299;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2.2rem;
}
.nav-mob-menu.open{display:flex}
.nav-mob-link{
  font-family:var(--f-display);
  font-size:2.2rem;
  font-weight:700;
  color:var(--ink);
}
.nav-mob-link:hover,.nav-mob-link.active{color:var(--gold)}
.nav-mob-close{
  position:absolute;top:1.4rem;right:var(--gutter);
  font-family:var(--f-mono);font-size:.62rem;
  letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-3);background:none;border:none;
}

/* ════════════════════
   PAGE HERO (inner pages)
════════════════════ */
.page-hero{
  padding:clamp(8rem,13vw,12rem) var(--gutter) clamp(4rem,6vw,6rem);
  border-bottom:1px solid var(--rule);
  position:relative;
  overflow:hidden;
}
.page-hero.dark{background:var(--dark);border-bottom-color:rgba(255,255,255,.06)}
.ph-grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(var(--rule) 1px,transparent 1px),
    linear-gradient(90deg,var(--rule) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.3;
  mask-image:radial-gradient(ellipse 90% 80% at 50% 0%,black 30%,transparent 100%);
  -webkit-mask-image:radial-gradient(ellipse 90% 80% at 50% 0%,black 30%,transparent 100%);
}
.page-hero.dark .ph-grid{
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
  opacity:1;
}
.ph-inner{
  position:relative;
  max-width:var(--max);
  margin:0 auto;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:4rem;
  align-items:end;
}
.ph-h1{font-size:clamp(3rem,6vw,5.5rem)}
.ph-sub{
  font-size:1.05rem;
  color:var(--ink-3);
  line-height:1.82;
  max-width:420px;
  align-self:end;
}
.ph-sub.light{color:rgba(244,243,239,.45)}

/* ════════════════════
   FOOTER
════════════════════ */
footer{
  border-top:1px solid var(--rule);
  padding:2.6rem var(--gutter);
  background:var(--surface);
}
.footer-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:2rem;
  flex-wrap:wrap;
}
.f-brand{display:flex;align-items:center;gap:1.2rem}
.f-wordmark{
  font-family:var(--f-display);
  font-size:.95rem;font-weight:700;
  letter-spacing:.04em;color:var(--ink);
}
.f-sep{width:1px;height:14px;background:var(--rule)}
.f-sub{
  font-family:var(--f-mono);
  font-size:.56rem;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-4);
}
.f-links{display:flex;align-items:center;gap:1.8rem;flex-wrap:wrap}
.f-link{
  font-family:var(--f-mono);font-size:.58rem;
  letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-3);transition:color var(--t);
}
.f-link:hover{color:var(--gold)}
.f-copy{
  font-family:var(--f-mono);font-size:.56rem;
  letter-spacing:.04em;color:var(--ink-4);
}

/* ════════════════════
   CARD PATTERNS
════════════════════ */
/* Grid of equal cards */
.card-grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
.card-grid-2{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:1px;
  background:var(--rule);
  border:1px solid var(--rule);
}
/* Standard card */
.card{
  background:var(--bg);
  padding:2.4rem 2rem;
  position:relative;
  overflow:hidden;
  transition:background var(--t),box-shadow var(--t),transform var(--t);
}
.card:hover{
  background:var(--surface);
  box-shadow:var(--shadow-md);
  z-index:1;
  transform:translateY(-2px);
}
.card-accent{
  position:absolute;top:0;left:0;
  width:3px;height:0;
  background:var(--gold);
  transition:height .5s var(--ease);
}
.card:hover .card-accent{height:100%}

/* Dark card */
.card-dark{
  background:var(--dark);
  padding:2.4rem 2rem;
  transition:background var(--t);
}
.card-dark:hover{background:var(--dark-2)}

/* ════════════════════
   STAT STRIP
════════════════════ */
.stat-strip{
  display:flex;
  align-items:center;
  gap:clamp(2rem,4vw,4rem);
  flex-wrap:wrap;
  padding:2rem 0;
  border-top:1px solid var(--rule);
}
.stat-item{display:flex;flex-direction:column;gap:.2rem}
.stat-num{
  font-family:var(--f-display);
  font-size:2.2rem;font-weight:700;
  color:var(--ink);line-height:1;
  letter-spacing:-.03em;
}
.stat-label{
  font-family:var(--f-mono);
  font-size:.58rem;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-4);
}
.stat-sep{width:1px;height:36px;background:var(--rule);flex-shrink:0}

/* ════════════════════
   FORM
════════════════════ */
.cf-row{margin-bottom:1.3rem}
.cf-row.half{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.cf-label{
  font-family:var(--f-mono);font-size:.58rem;
  letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-4);margin-bottom:.45rem;display:block;
}
.cf-input,.cf-select,.cf-textarea{
  width:100%;
  border:1px solid var(--rule);
  background:var(--bg);
  padding:.78rem 1rem;
  font-family:var(--f-body);
  font-size:.92rem;color:var(--ink);
  outline:none;border-radius:var(--radius);
  transition:border-color var(--t),box-shadow var(--t);
  -webkit-appearance:none;appearance:none;
}
.cf-input::placeholder,.cf-textarea::placeholder{color:var(--ink-4)}
.cf-input:focus,.cf-select:focus,.cf-textarea:focus{
  border-color:var(--ink);
  box-shadow:0 0 0 3px rgba(176,141,78,.1);
}
.cf-textarea{resize:vertical;min-height:120px;line-height:1.65}
.cf-select{
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23b5b3af' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;
  background-position:right 1rem center;
}
.cf-submit{
  width:100%;
  background:var(--ink);color:var(--surface);
  border:none;padding:1rem;
  font-family:var(--f-mono);font-size:.7rem;
  letter-spacing:.14em;text-transform:uppercase;
  transition:background var(--t);margin-top:.4rem;
}
.cf-submit:hover{background:var(--gold)}
.cf-submit:disabled{opacity:.5;cursor:not-allowed}
.cf-note{
  font-family:var(--f-mono);font-size:.58rem;
  letter-spacing:.06em;color:var(--ink-4);
  margin-top:.9rem;line-height:1.6;
}
.form-success{
  display:none;
  padding:3rem 2.5rem;
  border:1px solid var(--gold-mid);
  background:var(--gold-dim);
  text-align:center;
}
.fs-check{
  width:50px;height:50px;
  border:2px solid var(--gold);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 1.2rem;
}
.fs-h{
  font-family:var(--f-display);
  font-size:1.5rem;font-weight:700;
  color:var(--ink);margin-bottom:.5rem;
}
.fs-p{font-size:.9rem;color:var(--ink-3);line-height:1.7}

/* ════════════════════
   ANIMATIONS
════════════════════ */
@keyframes fadeUp{to{opacity:1;transform:translateY(0)}}
@keyframes slideIn{to{opacity:1;transform:scaleX(1)}}
@keyframes fadeIn{to{opacity:1}}

/* ════════════════════
   RESPONSIVE
════════════════════ */
@media(max-width:960px){
  .ph-inner{grid-template-columns:1fr;gap:2rem}
  .ph-sub{max-width:100%;align-self:auto}
  .nav-links,.nav-cta{display:none}
  .nav-mob-btn{display:flex}
  .card-grid-3{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .card-grid-3,.card-grid-2{grid-template-columns:1fr}
  .cf-row.half{grid-template-columns:1fr}
  .f-links{flex-direction:column;align-items:flex-start;gap:.6rem}
}