/* ============================================================
   Serewebe Ventures — shared stylesheet
   Desktop: fluid marketing layout. Mobile (<=768px): native-app layout
   with bottom navigation, bottom sheets, segmented controls, FAB.
   ============================================================ */

:root{
  --bg:#FBF9F6; --surface:#FFFFFF; --surface-2:#F5EFE8; --line:#E9E1D8;
  --ink:#160F10; --ink-soft:#6B5F59; --ink-faint:#9C8F87;
  --wine-900:#2A0709; --wine-800:#3D0C10; --wine-700:#551019;
  --red:#C8102E; --red-dark:#9E0B22; --red-bright:#E8546C;
  --brass:#C9A66B; --brass-dim:#B08D57;
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{margin:0;font-family:'IBM Plex Sans',sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3{font-family:'Fraunces',serif;margin:0;letter-spacing:-0.02em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
.mono{font-family:'IBM Plex Mono',monospace}
.wrap{max-width:1180px;margin:0 auto;padding:0 32px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 26px;border-radius:12px;font-size:14.5px;font-weight:600;border:none;transition:transform .15s ease, opacity .15s ease}
.btn:active{transform:scale(0.97)}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-dark)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn-brass{background:var(--brass);color:var(--wine-900)}

/* ---------- Desktop top nav ---------- */
.nav{position:sticky;top:0;z-index:100;background:rgba(251,249,246,0.86);backdrop-filter:blur(20px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:1180px;margin:0 auto;padding:16px 32px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-family:'Fraunces',serif;font-size:19px;font-weight:600}
.nav-logo img{height:26px;width:auto}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{font-size:14px;font-weight:500;color:var(--ink-soft)}
.nav-links a.active,.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;align-items:center;gap:14px}

/* ---------- Mobile top bar & hamburger (hidden on desktop) ---------- */
.m-topbar{display:none}
.m-menu-panel{display:none}

/* ---------- Footer ---------- */
.footer{background:var(--wine-900);color:rgba(255,255,255,0.6);padding:56px 32px 100px 32px}
.footer-inner{max-width:1180px;margin:0 auto;display:flex;justify-content:space-between;flex-wrap:wrap;gap:32px}
.footer h4{color:#fff;font-family:'Fraunces',serif;font-weight:500;font-size:18px;margin-bottom:14px}
.footer a{display:block;font-size:13.5px;padding:4px 0;color:rgba(255,255,255,0.55)}
.footer a:hover{color:#fff}
.footer-bottom{max-width:1180px;margin:40px auto 0 auto;padding-top:24px;border-top:1px solid rgba(255,255,255,0.12);font-size:12px;color:rgba(255,255,255,0.4)}

/* ---------- Cards / sections generic ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px}
.section{padding:88px 32px}
.section-2{background:var(--surface-2)}
.eyebrow{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:0.08em;text-transform:uppercase;color:var(--red-dark);font-weight:600;margin-bottom:14px}

/* ---------- Bottom nav (mobile only) ---------- */
.bottom-nav{display:none}
.fab-wa{display:none}

/* ---------- Segmented control (used both) ---------- */
.seg{display:flex;gap:6px;background:var(--surface-2);padding:5px;border-radius:14px}
.seg-btn{flex:1;padding:10px 4px;border:none;background:transparent;border-radius:10px;font-size:13.5px;font-weight:600;color:var(--ink-soft)}
.seg-btn.active{background:var(--surface);color:var(--ink);box-shadow:0 2px 8px rgba(22,15,16,0.08)}

/* ---------- Material grid + expandable cards ---------- */
.materials-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:14px}
.row-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;transition:box-shadow .15s ease;display:flex;flex-direction:column}
.row-card:hover{box-shadow:0 6px 18px rgba(22,15,16,0.08)}
.row-card [data-row-toggle]{display:flex;flex-direction:column;width:100%;background:none;border:none;padding:0;text-align:left}
.row-card .row-thumb{width:100%;aspect-ratio:1;object-fit:cover;background:var(--surface-2)}
.row-card .row-body{padding:12px 13px 13px 13px;display:flex;flex-direction:column;gap:4px}
.row-card .row-name{font-size:13.5px;font-weight:600;line-height:1.25;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;min-height:2.4em}
.row-card .row-type{font-size:11px;color:var(--ink-soft)}
.row-card .row-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:4px}
.row-card .row-price{font-size:13.5px;font-weight:700;color:var(--red-dark)}
.row-detail{max-height:0;overflow:hidden;transition:max-height .25s ease}
.row-card.open .row-detail{max-height:120px}
.row-card.open .chevron{transform:rotate(180deg)}
.chevron{transition:transform .2s ease; flex-shrink:0}

/* ---------- Bottom sheet (used both; acts as centered modal on desktop) ---------- */
.sheet-backdrop{position:fixed;inset:0;background:rgba(22,15,16,0.4);z-index:80;opacity:0;pointer-events:none;transition:opacity .2s ease}
.sheet-backdrop.open{opacity:1;pointer-events:auto}
.sheet{position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-radius:22px 22px 0 0;padding:10px 18px calc(20px + env(safe-area-inset-bottom,0px)) 18px;z-index:81;transform:translateY(100%);transition:transform .25s cubic-bezier(.32,.72,0,1);display:flex;flex-direction:column;gap:4px}
.sheet.open{transform:translateY(0)}
.sheet-handle{width:36px;height:4px;border-radius:2px;background:var(--line);margin:8px auto 14px auto}
.sheet-opt{text-align:left;padding:13px 10px;border-radius:12px;border:none;background:transparent;font-size:14.5px;font-weight:500;color:var(--ink)}
.sheet-opt.active{background:rgba(200,16,46,0.08);color:var(--red-dark);font-weight:600}
@media (min-width:769px){
  .sheet{left:50%;right:auto;bottom:auto;top:50%;transform:translate(-50%,-46%);width:340px;border-radius:18px;opacity:0;pointer-events:none;transition:opacity .18s ease, transform .18s ease}
  .sheet.open{opacity:1;pointer-events:auto;transform:translate(-50%,-50%)}
  .sheet-handle{display:none}
}

/* ---------- Form / pill selector (used both) ---------- */
.field{display:flex; flex-direction:column; gap:6px}
.field label{font-size:12.5px; font-weight:600; color:var(--ink-soft)}
.field input, .field textarea{font-family:inherit; font-size:14.5px; padding:13px 14px; border-radius:12px; border:1px solid var(--line); background:var(--surface); color:var(--ink)}
.field input:focus, .field textarea:focus{outline:none; border-color:var(--red)}
.pill{padding:10px 18px; border-radius:20px; border:1px solid var(--line); background:var(--surface); font-size:13.5px; font-weight:600; color:var(--ink-soft)}
.pill.active{background:var(--red); border-color:var(--red); color:#fff}

/* ---------- Carousel (used both) ---------- */
.carousel{display:flex;overflow-x:auto;gap:14px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.carousel::-webkit-scrollbar{display:none}
.snap{scroll-snap-align:start;flex-shrink:0}

/* ============================================================
   MOBILE (<=768px) — native-app experience
   ============================================================ */
@media (max-width: 768px){
  .wrap{padding:0 20px}
  .section{padding:32px 0}

  /* Hide desktop nav, show mobile topbar */
  .nav{display:none}
  .m-topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;background:rgba(251,249,246,0.9);backdrop-filter:blur(20px);position:sticky;top:0;z-index:60;border-bottom:1px solid var(--line)}
  .m-topbar .brand{display:flex;align-items:center;gap:8px;font-family:'Fraunces',serif;font-weight:600;font-size:16px}
  .m-topbar .brand img{height:22px;width:auto}
  .m-topbar .m-actions{display:flex;align-items:center;gap:8px}
  .icon-btn{width:38px;height:38px;border-radius:50%;background:var(--surface);border:1px solid var(--line);display:flex;align-items:center;justify-content:center}
  .icon-btn:active{transform:scale(0.92)}

  /* Bottom nav */
  .bottom-nav{display:flex;position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,0.94);backdrop-filter:blur(24px);border-top:1px solid var(--line);justify-content:space-around;align-items:center;padding:9px 4px calc(9px + env(safe-area-inset-bottom,0px)) 4px;z-index:70;box-shadow:0 -6px 20px rgba(22,15,16,0.05)}
  .bn-item{display:flex;flex-direction:column;align-items:center;gap:3px;padding:6px 4px;border-radius:12px;color:var(--ink-faint);flex:1}
  .bn-item.active{color:var(--red-dark)}
  .bn-label{font-size:10px;font-weight:600}
  body{padding-bottom:78px}

  /* FAB */
  .fab-wa{display:flex;position:fixed;right:18px;bottom:82px;width:54px;height:54px;border-radius:50%;background:#25D366;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(37,211,102,0.4);z-index:65}

  /* Carousel mobile spacing */
  .carousel{padding:4px 20px 8px 20px;margin:0 -20px}

  /* Materials grid: 2 columns on phones */
  .materials-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .row-card .row-name{font-size:13px}
  .row-card .row-body{padding:10px 11px 11px 11px}

  /* Force a clean 2-up grid on mobile for stat/benefit rows (auto-fit collapses to 1 col at this width) */
  .grid-2-mobile{grid-template-columns:repeat(2,1fr) !important; gap:12px !important}
  .grid-2-mobile .card{padding:18px !important}
  .grid-2-mobile .card h3{font-size:15px !important}
  .grid-2-mobile .card div{font-size:12.5px !important}

  .sticky-cta{position:fixed;left:0;right:0;bottom:78px;padding:10px 20px;z-index:55;background:linear-gradient(to top, var(--bg) 60%, rgba(251,249,246,0))}
}
@media (min-width: 769px){
  .m-only{display:none !important}
}
@media (max-width: 768px){
  .d-only{display:none !important}
}