/* ===================================================
   DELTA — Shared design system (used by all pages)
   v2.1 · 2026-05 · Mobile fixes: FAB visibility, hero overflow, theme icon
   =================================================== */
:root{
  /* Brand colors (per visual identity guide) */
  --delta-orange:#B35609;
  --delta-orange-deep:#8F3E00;
  --delta-orange-soft:#FFD8A8;
  --delta-gray:#5F5A54;
  --delta-gray-light:#9E9993;
  --delta-charcoal:#2A2826;
  --delta-ink:#15140F;

  /* Surface tokens */
  --bg:#FAF8F5;
  --bg-elev:#FFFFFF;
  --bg-soft:#F1ECE6;
  --bg-tonal:#EAE4DC;
  --fg:#1A1815;
  --fg-muted:#52493C;
  --fg-soft:#5F5A54;
  --line:rgba(26,24,21,0.10);
  --line-strong:rgba(26,24,21,0.22);
  --accent:var(--delta-orange);
  --accent-hover:var(--delta-orange-deep);
  --accent-fg:#FFFFFF;

  /* Stable web fonts. Avoid Windows-only fallbacks that render too thin in Chrome. */
  --font-display:"Manrope","Carlito","Segoe UI",-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --font-sans:"Manrope","Carlito","Segoe UI",-apple-system,BlinkMacSystemFont,system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Cascadia Mono","Consolas",ui-monospace,monospace;

  /* Motion */
  --ease-out:cubic-bezier(0.22,1,0.36,1);
  --ease-in-out:cubic-bezier(0.65,0,0.35,1);

  /* Layout */
  --container:1480px;
  --gutter:40px;
}
[data-theme="dark"]{
  --bg:#15140F;
  --bg-elev:#1E1C18;
  --bg-soft:#25221E;
  --bg-tonal:#2D2A25;
  --fg:#F4F1EB;
  --fg-muted:#C4C0BF;
  --fg-soft:#A8A29A;
  --line:rgba(244,241,235,0.08);
  --line-strong:rgba(244,241,235,0.18);
  --accent:#F18918;
  --accent-hover:#FFD8A8;
  --accent-fg:#15140F;
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  background:var(--bg);color:var(--fg);
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
  font-size:16px;
  transition:background 400ms var(--ease-out),color 400ms var(--ease-out);
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img,svg{display:block;max-width:100%}
::selection{background:var(--accent);color:var(--accent-fg)}
p a:not(.btn),
li a:not(.btn),
.faq__a a:not(.btn),
.sec__sub a:not(.btn),
.pagehead__lede a:not(.btn){
  color:var(--accent);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:3px;
}
:focus:not(:focus-visible){outline:none}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
}
.skip-link{position:fixed;top:12px;left:12px;z-index:9999;transform:translateY(-140%);background:var(--accent);color:var(--accent-fg);padding:10px 16px;border-radius:4px;font-weight:700;box-shadow:0 16px 32px -18px rgba(21,20,15,0.55);transition:transform 180ms var(--ease-out)}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0);outline:2px solid var(--fg);outline-offset:3px}

/* ========== TYPOGRAPHY UTILITIES ========== */
.display{font-family:var(--font-display);font-weight:400;letter-spacing:-0.02em;line-height:0.96;text-wrap:balance}
.display em{font-style:normal;color:var(--accent);font-weight:400}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:0.18em;text-transform:uppercase;color:var(--fg-muted);display:inline-flex;align-items:center;gap:10px;font-weight:500}
.eyebrow .dot{display:inline-block;width:7px;height:7px;background:var(--accent);border-radius:50%}
.eyebrow .dot--sq{border-radius:0}
.mono{font-family:var(--font-mono);font-size:11px;letter-spacing:0.14em;text-transform:uppercase}
.mono--dim{color:var(--fg-muted)}
.accent{color:var(--accent)}

/* ========== REVEAL ========== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 900ms var(--ease-out),transform 900ms var(--ease-out)}
.reveal.is-shown{opacity:1;transform:none}
.reveal--right{transform:translateX(28px)}
.reveal--scale{transform:scale(0.94)}

/* ========== NAV ========== */
.nav{position:fixed;top:0;left:0;right:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:32px;padding:18px 40px;transition:all 350ms var(--ease-out)}
.nav.is-scrolled{background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--line);padding-top:12px;padding-bottom:12px}
/* LOGO — minimum visual size of 3cm width per brand book (≈113px@96dpi) */
.nav__brand{display:flex;align-items:center;height:52px}
.nav__brand img{height:46px;width:auto;min-width:120px;object-fit:contain;object-position:left center;transition:transform 250ms var(--ease-out)}
.nav__brand:hover img{transform:scale(1.02)}
.nav__links{display:flex;gap:32px;font-size:14px}
.nav__links a{position:relative;padding:6px 0;color:var(--fg-muted);transition:color 200ms;font-weight:500}
.nav__links a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width 300ms var(--ease-out)}
.nav__links a:hover,.nav__links a.is-active,.nav__links .nav__drop.is-active > .nav__drop-trigger{color:var(--fg)}
.nav__links a:hover::after,.nav__links a.is-active::after,.nav__links .nav__drop.is-active > .nav__drop-trigger::after{width:100%}

/* Dropdown menus */
.nav__drop{position:relative;display:inline-block}
.nav__drop-trigger{position:relative;padding:6px 0;color:var(--fg-muted);transition:color 200ms;font-weight:500;font-size:14px;display:inline-flex;align-items:center;gap:6px;cursor:pointer}
.nav__drop-trigger::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--accent);transition:width 300ms var(--ease-out)}
.nav__drop-trigger:hover{color:var(--fg)}
.nav__drop-trigger .caret{font-size:9px;transition:transform 220ms var(--ease-out);opacity:0.7}
.nav__drop.is-open .nav__drop-trigger .caret,.nav__drop-trigger[aria-expanded="true"] .caret{transform:rotate(180deg)}
.nav__drop-menu{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%) translateY(-8px);min-width:520px;background:var(--bg-elev);border:1px solid var(--line);box-shadow:0 24px 60px -20px rgba(0,0,0,0.18);padding:24px;display:grid;grid-template-columns:1fr 1fr;gap:32px;opacity:0;visibility:hidden;transition:all 220ms var(--ease-out);z-index:50}
.nav__drop-menu--single{grid-template-columns:1fr 1fr;min-width:540px}
.nav__drop-menu--portfolio{grid-template-columns:repeat(4,1fr);min-width:min(920px,calc(100vw - 48px))}
body[data-page="portfolio"] .nav:not(.is-scrolled) .nav__brand{padding:6px 10px;border-radius:6px;background:rgba(244,241,235,0.86);box-shadow:0 12px 28px -22px rgba(21,20,15,0.6);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
body[data-page="portfolio"] .nav:not(.is-scrolled) .nav__brand img{filter:none}
.nav__drop.is-open .nav__drop-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.nav__drop-col h5{font-family:var(--font-mono);font-size:10px;letter-spacing:0.18em;text-transform:uppercase;color:var(--fg-muted);margin:0 0 10px;font-weight:500;padding-bottom:8px;border-bottom:1px solid var(--line)}
.nav__drop-col a{display:block;padding:8px 0;color:var(--fg);font-size:14px;font-family:var(--font-sans);transition:color 180ms,padding-left 180ms;text-decoration:none;position:relative;font-weight:400}
.nav__drop-col a::after{display:none}
.nav__drop-col a:hover{color:var(--accent);padding-left:6px}

/* Mobile nav adjustments */
.navmob__group{border-bottom:1px solid var(--line);padding:8px 0}
.navmob__group summary{font-family:var(--font-display);font-size:22px;font-weight:400;cursor:pointer;list-style:none;padding:12px 0;display:flex;justify-content:space-between;align-items:center}
.navmob__group summary::after{content:"+";color:var(--accent);font-family:var(--font-mono);transition:transform 250ms}
.navmob__group[open] summary::after{transform:rotate(45deg)}
.navmob__group summary::-webkit-details-marker{display:none}
.navmob__group a{padding:8px 0 8px 16px;font-size:15px;font-family:var(--font-sans);border-bottom:0;color:var(--fg-muted)}
.navmob__group a:hover{color:var(--accent)}
.navmob__contact{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:18px}
.navmob__contact a{min-height:46px;border-radius:999px;display:flex;align-items:center;justify-content:center;padding:0 14px;border:1px solid var(--line-strong);font-size:14px;font-weight:700;color:var(--fg)}
.navmob__contact a:first-child{background:#25D366;border-color:#25D366;color:#fff}
.navmob__contact a:last-child{background:var(--accent);border-color:var(--accent);color:#fff}
.nav__actions{display:flex;align-items:center;gap:12px}
.nav__theme{width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);font-size:16px;display:grid;place-items:center;transition:transform 400ms var(--ease-out),background 200ms,border-color 200ms}
.nav__theme:hover{transform:rotate(180deg);background:var(--bg-soft);border-color:var(--accent)}
.nav__phone{font-family:var(--font-mono);font-size:13px;letter-spacing:0.05em;color:var(--fg);padding:8px 14px;border:1px solid var(--line-strong);border-radius:999px;display:none;align-items:center;gap:8px;transition:all 200ms}
.nav__phone:hover{background:var(--fg);color:var(--bg);border-color:var(--fg)}
@media (min-width:880px){.nav__phone{display:inline-flex}}
.nav__wa{height:36px;padding:0 14px;border-radius:999px;background:#25D366;color:#fff;display:none;align-items:center;gap:8px;font-size:13px;font-weight:700;box-shadow:0 8px 18px -10px rgba(37,211,102,0.7);transition:transform 220ms var(--ease-out),background 200ms}
.nav__wa:hover{background:#1DAE51;transform:translateY(-1px)}
@media (min-width:1180px){.nav__wa{display:inline-flex}}
.nav__menu-toggle{display:none;width:40px;height:40px;border:1px solid var(--line-strong);border-radius:999px;align-items:center;justify-content:center}
.nav__menu-toggle span{display:block;width:16px;height:1.5px;background:currentColor;position:relative}
.nav__menu-toggle span::before,.nav__menu-toggle span::after{content:"";position:absolute;left:0;width:16px;height:1.5px;background:currentColor}
.nav__menu-toggle span::before{top:-5px}
.nav__menu-toggle span::after{top:5px}

/* ========== BUTTONS ========== */
.btn{display:inline-flex;align-items:center;gap:10px;padding:13px 24px;border-radius:999px;font-size:14px;font-weight:600;font-family:var(--font-sans);transition:all 280ms var(--ease-out);white-space:nowrap;line-height:1}
.btn--sm{padding:9px 16px;font-size:13px}
.btn--lg{padding:18px 32px;font-size:16px}
.btn--primary{background:var(--accent);color:var(--accent-fg);box-shadow:0 8px 20px -8px color-mix(in srgb,var(--accent) 50%,transparent)}
.btn--primary:hover{background:var(--accent-hover);color:var(--accent-fg);transform:translateY(-2px);box-shadow:0 14px 30px -10px color-mix(in srgb,var(--accent) 70%,transparent)}
.btn--ghost{border:1px solid var(--line-strong);color:var(--fg);background:transparent}
.btn--ghost:hover{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.btn--ink{background:var(--fg);color:var(--bg)}
.btn--ink:hover{background:var(--delta-orange-deep);color:#fff}
.btn--wa{background:#25D366;color:#fff;box-shadow:0 8px 20px -8px rgba(37,211,102,0.55)}
.btn--wa:hover{background:#1DAE51;transform:translateY(-2px);box-shadow:0 14px 30px -10px rgba(37,211,102,0.7)}
.btn__arrow{display:inline-block;transition:transform 280ms var(--ease-out)}
.btn:hover .btn__arrow{transform:translateX(5px)}
.btn__icon{width:18px;height:18px}

/* ========== PAGE HEADER (inner pages) ========== */
.pagehead{padding:160px 40px 80px;max-width:var(--container);margin:0 auto;border-bottom:1px solid var(--line);position:relative;overflow:hidden}
.pagehead__crumb{margin-bottom:24px}
.pagehead__title{font-size:clamp(56px,8vw,128px);margin:8px 0 28px;line-height:0.96}
.pagehead__lede{font-size:18px;color:var(--fg-muted);max-width:680px;line-height:1.6}
.pagehead__bg{position:absolute;right:-100px;top:-50px;width:520px;height:520px;background:radial-gradient(circle at center,color-mix(in srgb,var(--accent) 22%,transparent),transparent 70%);filter:blur(20px);pointer-events:none;z-index:0}
.pagehead > *:not(.pagehead__bg){position:relative;z-index:1}

/* ========== CROP MARKS ========== */
.crop{position:absolute;width:12px;height:12px;border-color:var(--accent);border-style:solid;border-width:0;z-index:3;pointer-events:none}
.crop--tl{top:8px;left:8px;border-top-width:1.5px;border-left-width:1.5px}
.crop--tr{top:8px;right:8px;border-top-width:1.5px;border-right-width:1.5px}
.crop--bl{bottom:8px;left:8px;border-bottom-width:1.5px;border-left-width:1.5px}
.crop--br{bottom:8px;right:8px;border-bottom-width:1.5px;border-right-width:1.5px}

/* ========== GLOBAL CONTACT ACTIONS ========== */
.contact-fab{position:fixed;right:24px;bottom:24px;z-index:60;display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.contact-fab__item{position:relative;min-height:48px;padding:0 18px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;gap:10px;color:#fff;font-size:13px;font-weight:800;box-shadow:0 14px 32px -12px rgba(21,20,15,0.42);transition:transform 240ms var(--ease-out),box-shadow 240ms var(--ease-out),background 200ms}
.contact-fab__item:hover{transform:translateY(-2px);box-shadow:0 18px 38px -14px rgba(21,20,15,0.52)}
.contact-fab__wa{background:#25D366}
.contact-fab__wa:hover{background:#1DAE51}
.contact-fab__quote{background:var(--accent)}
.contact-fab__quote:hover{background:var(--accent-hover);color:var(--accent-fg)}
.contact-fab__wa::before{content:"";position:absolute;width:48px;height:48px;border-radius:999px;background:#25D366;animation:pulse 2.4s ease-out infinite;z-index:-1;opacity:0.35}
@keyframes pulse{0%{transform:scale(1);opacity:0.6}100%{transform:scale(1.6);opacity:0}}

.backtop{position:fixed;right:24px;bottom:146px;z-index:59;min-height:42px;padding:0 14px;border:1px solid var(--line-strong);border-radius:999px;background:color-mix(in srgb,var(--bg-elev) 92%,transparent);color:var(--fg);box-shadow:0 14px 32px -18px rgba(21,20,15,0.38);display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:800;letter-spacing:0.02em;opacity:0;visibility:hidden;pointer-events:none;transform:translateY(10px);transition:opacity 220ms var(--ease-out),visibility 220ms var(--ease-out),transform 220ms var(--ease-out),background 180ms,border-color 180ms;color-scheme:light dark}
.backtop strong{font-family:var(--font-mono);font-size:14px;color:var(--accent);line-height:1}
.backtop:hover{background:var(--fg);border-color:var(--fg);color:var(--bg);transform:translateY(6px)}
.backtop:hover strong{color:var(--bg)}
.backtop.is-visible{opacity:1;visibility:visible;pointer-events:auto;transform:translateY(0)}

/* ========== FOOTER ========== */
.footer{background:var(--delta-ink);color:#F4F1EB;padding:56px 40px 32px;--fg-muted:#C4C0BF;--line:rgba(244,241,235,0.08);position:relative;overflow:hidden}
.footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--accent) 30%,var(--accent) 70%,transparent)}
.footer__row{display:grid;grid-template-columns:1.2fr 2fr;gap:64px;max-width:var(--container);margin:0 auto 48px}
.footer__brand{display:flex;flex-direction:column;gap:16px}
.footer__brand img{height:72px;width:auto;min-width:160px;object-fit:contain;object-position:left center;filter:brightness(1.4)}
.footer__brand-tag{font-family:var(--font-mono);font-size:12px;letter-spacing:0.18em;color:#C4C0BF;text-transform:uppercase;margin-top:4px}
.footer__brand-quote{font-family:var(--font-display);font-size:24px;font-weight:300;color:#F4F1EB;line-height:1.2;font-style:italic;margin-top:16px;max-width:280px}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.footer__col{display:flex;flex-direction:column;gap:12px;font-size:14px}
.footer__col h4{font-family:var(--font-mono);font-size:11px;letter-spacing:0.18em;text-transform:uppercase;color:#C4C0BF;margin:0 0 16px;font-weight:500}
.footer__col a,.footer__col span:not(h4){color:#C4C0BF;transition:color 200ms;display:inline-flex;align-items:center;gap:8px}
.footer__col a:hover{color:var(--accent)}
.footer__base{display:flex;justify-content:space-between;padding-top:28px;border-top:1px solid var(--line);max-width:var(--container);margin:0 auto;flex-wrap:wrap;gap:16px;font-size:13px;color:#A8A29A;align-items:center}
.footer__powered{font-family:var(--font-mono);font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:#A8A29A}
.footer__powered span{color:var(--accent)}
.footer__base a{color:#C4C0BF}
.footer__base a:hover{color:var(--accent)}
.footer__social{display:flex;gap:12px}
.footer__social a{min-height:36px;border:1px solid var(--line);border-radius:999px;display:inline-flex;align-items:center;justify-content:center;padding:0 14px;color:#C4C0BF;transition:all 200ms;font-size:13px}
.footer__social a:hover{background:var(--accent);border-color:var(--accent);color:#fff}

/* ========== TICKER ========== */
.ticker{overflow:hidden;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--bg);padding:18px 0}
.ticker__track{display:flex;gap:64px;white-space:nowrap;animation:ticker 36s linear infinite;font-family:var(--font-display);font-size:clamp(28px,3vw,48px);font-weight:300;letter-spacing:-0.01em}
.ticker__track span{display:inline-flex;align-items:center;gap:64px}
.ticker__sep{display:inline-block;width:10px;height:10px;background:var(--accent);border-radius:50%;flex:none}
@keyframes ticker{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* ========== RESPONSIVE ========== */
@media (max-width:1100px){
  .nav__links{display:none}
  .nav__menu-toggle{display:flex}
  .footer__row{grid-template-columns:1fr}
}
@media (max-width:640px){
  body{padding-bottom:78px}
  .nav{padding:14px 16px}
  .pagehead{padding:120px 16px 56px}
  .footer{padding:40px 16px 24px}
  .footer__cols{grid-template-columns:1fr 1fr}
  .footer__base{flex-direction:column}
  .contact-fab{left:12px;right:12px;bottom:calc(12px + env(safe-area-inset-bottom));display:grid;grid-template-columns:1fr 1fr;gap:10px;transition:opacity 300ms,visibility 300ms}
  .contact-fab.is-hidden{opacity:0;visibility:hidden;pointer-events:none}
  .contact-fab__item{min-height:52px;padding:0 12px;font-size:13px}
  .contact-fab__wa::before{display:none}
  .backtop{right:12px;bottom:calc(82px + env(safe-area-inset-bottom));min-height:38px;padding:0 12px}
  .hero__cta .btn--wa{display:none}
  :root{--gutter:16px}
}
@media (max-width:520px){
  .nav__actions .cta-orcamento{display:none}
  .nav__actions{gap:8px}
  .footer__brand,.footer__cols{min-width:0;max-width:100%}
  .footer__brand img{max-width:220px;width:100%;min-width:0}
  .footer__brand-tag{overflow-wrap:anywhere}
}