/* ==========================================================================
   CÔNCAVO ARQUITETURA — sistema compartilhado
   Identidade da marca preservada: paper/grafite/azul + Fahkwang & Jost.
   ========================================================================== */

:root{
  --paper:#F1F0EC;
  --paper-2:#F7F6F2;
  --ink:#282828;
  --umber-2:#1f1f1f;
  --taupe:#656565;
  --taupe-light:#BFBFBD;
  --hair:#DAD8D1;
  --hair-dark:#3a3a3a;
  --blue:#607E9A;         /* acento primário da marca */
  --blue-soft:#A9C0D4;
  --brown:#72544A;        /* acento quente */
  --amber:#607E9A;        /* alias herdado do site original */
  --amber-soft:#A9C0D4;

  --font-display:"Fahkwang",Georgia,serif;
  --font-sans:"Jost",system-ui,-apple-system,sans-serif;

  --ease-out:cubic-bezier(0.23,1,0.32,1);
  --ease-io:cubic-bezier(0.77,0,0.175,1);

  --pad:clamp(20px,5vw,64px);
  --dock-h:56px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--blue);color:var(--paper)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:2px}

.wrap{max-width:1240px;margin:0 auto;padding:0 var(--pad)}
.eyebrow{font-size:12px;letter-spacing:.28em;text-transform:uppercase;font-weight:600;color:var(--taupe)}
.dark .eyebrow{color:var(--blue-soft)}
.serif{font-family:var(--font-display);font-weight:400}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(34px);transition:opacity 1s var(--ease-out),transform 1s var(--ease-out)}
.reveal.in{opacity:1;transform:none}

/* ---------- botões ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font-sans);font-size:14px;font-weight:500;letter-spacing:.04em;
  padding:13px 26px;border-radius:100px;border:1px solid var(--ink);
  cursor:pointer;transition:all .3s var(--ease-out);
}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--umber-2)}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-amber{background:var(--brown);border-color:var(--brown);color:#F1F0EC}
.btn-amber:hover{background:#866256;border-color:#866256}
.btn:active{transform:scale(.97)}
.dark .btn-ghost{border-color:var(--taupe);color:var(--paper)}
.dark .btn-ghost:hover{background:var(--paper);color:var(--ink)}

/* ---------- topo: marca + 3 palitos ---------- */
.top{
  position:fixed;top:0;left:0;right:0;z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--pad);
  transition:background .4s var(--ease-out),border-color .4s var(--ease-out);
  border-bottom:1px solid transparent;
}
.top.scrolled{background:rgba(241,240,236,.82);backdrop-filter:blur(14px);border-bottom-color:var(--hair)}
.top.on-dark{color:var(--paper)}
.top.on-dark.scrolled{background:rgba(31,31,31,.72);border-bottom-color:var(--hair-dark)}
.top .mark{display:flex;align-items:center;gap:11px}
.top .mark .sym{height:26px;width:auto}
.top .mark .wm{height:16px;width:auto}
.top.on-dark .mark .sym,.top.on-dark .mark .wm{filter:invert(1) brightness(1.7)}

/* 3 palitos */
.burger{width:44px;height:44px;display:grid;place-content:center;gap:5px;border-radius:50%;transition:background .3s}
.burger:hover{background:rgba(40,40,40,.07)}
.top.on-dark .burger:hover{background:rgba(241,240,236,.12)}
.burger i{display:block;width:22px;height:1.5px;background:currentColor;transition:transform .4s var(--ease-io),opacity .3s}
.burger.x i:nth-child(1){transform:translateY(6.5px) rotate(45deg)}
.burger.x i:nth-child(2){opacity:0}
.burger.x i:nth-child(3){transform:translateY(-6.5px) rotate(-45deg)}

/* ---------- menu overlay ---------- */
.menu{
  position:fixed;inset:0;z-index:55;background:var(--ink);color:var(--paper);
  display:flex;flex-direction:column;justify-content:center;padding:0 var(--pad);
  clip-path:circle(0% at calc(100% - 44px) 40px);
  transition:clip-path .8s var(--ease-io);pointer-events:none;
}
.menu.open{clip-path:circle(150% at calc(100% - 44px) 40px);pointer-events:auto}
.menu nav{display:flex;flex-direction:column;gap:6px;max-width:1240px;margin:0 auto;width:100%}
.menu nav a{
  font-family:var(--font-display);font-weight:300;
  font-size:clamp(2rem,6.5vw,4.4rem);line-height:1.1;letter-spacing:-.01em;
  color:var(--paper);opacity:0;transform:translateY(26px);
  transition:opacity .6s var(--ease-out),transform .6s var(--ease-out),color .3s;
  display:flex;align-items:baseline;gap:18px;
}
.menu.open nav a{opacity:1;transform:none}
.menu nav a:hover{color:var(--blue-soft)}
.menu nav a .n{font-family:var(--font-sans);font-size:12px;font-weight:600;letter-spacing:.2em;color:var(--taupe)}
.menu nav a[aria-current="page"]{color:var(--blue-soft)}
.menu .m-foot{
  max-width:1240px;margin:56px auto 0;width:100%;
  display:flex;flex-wrap:wrap;gap:10px 28px;
  font-size:13px;letter-spacing:.06em;color:var(--taupe-light);
  opacity:0;transition:opacity .6s .35s;
}
.menu.open .m-foot{opacity:1}
.menu .m-foot a:hover{color:var(--paper)}

/* ---------- A ILHA (dock flutuante — orçamento + contato) ---------- */
.island{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
  z-index:70;width:min(452px,calc(100vw - 28px));
}
.island-shell{
  background:rgba(247,246,242,.78);
  backdrop-filter:blur(20px) saturate(1.4);
  border:1px solid rgba(40,40,40,.1);
  border-radius:21px;
  box-shadow:0 18px 50px -14px rgba(40,40,40,.3),0 2px 6px rgba(40,40,40,.06);
  overflow:hidden;
  transition:border-radius .5s var(--ease-io);
}
.island.open .island-shell{border-radius:18px}

/* painel que cresce pra cima */
.island-panel{
  display:grid;grid-template-rows:0fr;
  transition:grid-template-rows .55s var(--ease-io);
}
.island.open .island-panel{grid-template-rows:1fr}
.island-panel > div{overflow:hidden}
.island-inner{padding:16px 16px 4px}
.island-inner .lbl{
  font-size:10.5px;letter-spacing:.24em;text-transform:uppercase;
  color:var(--taupe);font-weight:600;margin-bottom:14px;
}
.island-links{display:flex;flex-direction:column;gap:2px}
.island-links a{
  display:flex;align-items:center;gap:11px;padding:8px 9px;border-radius:10px;
  transition:background .25s;
}
.island-links a:hover{background:rgba(96,126,154,.09)}
.island-links .ic{
  width:28px;height:28px;flex:none;border-radius:50%;
  display:grid;place-items:center;background:rgba(96,126,154,.12);color:var(--blue);
}
.island-links .ic svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:1.7}
.island-links .tx{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.island-links .tx b{font-size:13px;font-weight:500;color:var(--ink)}
.island-links .tx span{font-size:11px;color:var(--taupe);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* barra sempre visível */
.island-bar{display:flex;align-items:center;gap:8px;padding:7px 7px 7px 13px;height:var(--dock-h)}
.island-bar .sym{height:20px;width:auto;flex:none;opacity:.9}
.island-cta{
  flex:1;display:flex;align-items:center;justify-content:center;gap:7px;
  background:var(--ink);color:var(--paper);border-radius:15px;height:42px;
  font-size:13px;font-weight:500;letter-spacing:.03em;
  transition:background .3s var(--ease-out);
}
.island-cta:hover{background:var(--blue)}
.island-cta svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:1.8}
.island-toggle{
  width:42px;height:42px;flex:none;border-radius:13px;
  display:grid;place-items:center;background:rgba(40,40,40,.06);
  transition:background .3s;
}
.island-toggle:hover{background:rgba(40,40,40,.12)}
.island-toggle svg{width:15px;height:15px;stroke:var(--ink);fill:none;stroke-width:1.8;transition:transform .5s var(--ease-io)}
.island.open .island-toggle svg{transform:rotate(180deg)}

/* esconde a ilha ao rolar pra baixo, revela ao subir */
.island{transition:transform .5s var(--ease-io),opacity .4s}
.island.hide{transform:translateX(-50%) translateY(140%);opacity:0}

@media(max-width:560px){
  .island{bottom:10px;width:calc(100vw - 18px)}
  .island-bar{padding:6px 6px 6px 11px}
  .island-cta{font-size:13px}
}

/* ---------- rodapé ---------- */
.foot{background:var(--ink);color:var(--taupe-light);padding:76px 0 40px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px}
.foot .logo-foot{height:44px;width:auto;margin-bottom:20px}
.foot p{font-size:14px;color:var(--taupe-light);max-width:38ch;line-height:1.7}
.foot .foot-addr{margin-top:16px;font-size:12.5px;color:var(--taupe);letter-spacing:.03em}
.foot-col h4{font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--paper);font-weight:600;margin-bottom:18px}
.foot-col a{display:block;font-size:14px;color:var(--taupe-light);padding:5px 0;transition:color .25s}
.foot-col a:hover{color:var(--blue-soft)}
.foot-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  margin-top:56px;padding-top:26px;border-top:1px solid var(--hair-dark);
  font-size:12px;color:var(--taupe);letter-spacing:.04em;
}
.foot-bottom a{color:var(--taupe-light)}
.foot-bottom a:hover{color:var(--blue-soft)}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr;gap:34px}}

/* espaço pra ilha não cobrir o fim da página */
.foot{padding-bottom:calc(40px + var(--dock-h) + 22px)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}