/* GM Sistemas em Vidro (Gonçalo Machado, Unipessoal Lda) — conceito de landing page (Acessa)
   Identidade: caixilho em PVC grafite, vidro azul-claro e o azul da marca GM. */
:root{
  --ink:#1c252c;
  --ink-2:#2c3a44;
  --alu:#5f6e78;
  --alu-200:#d6dde1;
  --blue:#136fa9;
  --blue-700:#0e5683;
  --cyan:#35b8e6;
  --glass:#9fd3ea;
  --glass-50:#eaf5fa;
  --bg:#f6f8f9;
  --white:#fff;
  --radius:6px;
  --shadow:0 1px 2px rgba(28,37,44,.06),0 14px 34px -16px rgba(28,37,44,.35);
  --font-display:"Barlow Condensed","Arial Narrow",system-ui,sans-serif;
  --font-body:"Barlow",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bar-h:68px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-body);font-size:1.0625rem;line-height:1.6;color:var(--ink);background:var(--bg);padding-bottom:calc(var(--bar-h) + env(safe-area-inset-bottom));overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
svg{flex-shrink:0}
a{color:inherit}
h1,h2,h3{font-family:var(--font-display);line-height:1.02;letter-spacing:-.005em;margin:0 0 .45em;color:var(--ink);text-transform:uppercase}
h1{font-size:clamp(2.6rem,12vw,4.8rem);font-weight:800}
h2{font-size:clamp(2rem,7.4vw,3rem);font-weight:800}
h3{font-size:1.5rem;font-weight:700;letter-spacing:.01em}
p{margin:0 0 1em}
.wrap{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.muted{color:var(--alu)}
.small{font-size:.94rem}
.skip{position:absolute;left:-999px;top:8px;background:var(--blue);color:var(--white);padding:8px 14px;border-radius:4px;z-index:100;font-weight:700}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--cyan);outline-offset:3px}

/* Barra superior */
.topbar{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);backdrop-filter:saturate(1.3) blur(10px);border-bottom:1px solid rgba(28,37,44,.1)}
.topbar__in{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:64px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:0}
.brand__logo{height:44px;width:auto}
.brand__sub{font-size:.72rem;font-weight:600;color:var(--alu);letter-spacing:.06em;text-transform:uppercase;line-height:1.2;border-left:1px solid var(--alu-200);padding-left:12px}
.nav{display:none;gap:30px}
.nav a{text-decoration:none;font-weight:600;color:var(--ink-2);font-size:.98rem}
.nav a:hover{color:var(--blue)}
.topbar__call{display:inline-flex;align-items:center;gap:8px;text-decoration:none;font-weight:700;color:var(--white);background:var(--ink);padding:9px 14px;border-radius:4px;font-size:.95rem;white-space:nowrap}
.topbar__call svg{width:18px;height:18px;color:var(--cyan)}
@media (max-width:420px){.brand__sub{display:none}.topbar__call span{display:none}.topbar__call{padding:10px}}
.hide-sm{display:none}
@media (min-width:640px){.hide-sm{display:inline}}

/* Hero */
.hero{position:relative;padding:34px 0 56px;overflow:hidden;background:
  linear-gradient(120deg,rgba(53,184,230,.10) 0 22%,transparent 22% 100%),
  linear-gradient(90deg,rgba(28,37,44,.04) 1px,transparent 1px) 0 0/48px 48px,
  linear-gradient(rgba(28,37,44,.04) 1px,transparent 1px) 0 0/48px 48px,var(--bg)}
.hero__grid{display:grid;gap:32px;position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.84rem;letter-spacing:.08em;text-transform:uppercase;color:var(--blue);border-left:4px solid var(--cyan);padding:4px 0 4px 10px;margin-bottom:16px}
.eyebrow svg{width:17px;height:17px}
.glassline{display:inline;color:var(--blue);background:linear-gradient(transparent 0 70%,rgba(53,184,230,.28) 70% 92%,transparent 92%)}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:34em}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 22px}
.cta-row .btn{flex:1 1 100%}
.btn{display:inline-flex;align-items:center;gap:14px;text-decoration:none;border-radius:var(--radius);padding:14px 18px;font-weight:700;transition:transform .15s ease,box-shadow .15s ease,background .15s}
.btn svg{width:24px;height:24px}
.btn:hover{transform:translateY(-1px)}
.btn__main{display:block;font-size:1.06rem;line-height:1.25}
.btn__sub{display:block;font-weight:500;font-size:.92rem;opacity:.9;overflow-wrap:anywhere}
.btn--primary{background:var(--blue);color:var(--white);box-shadow:0 12px 24px -12px rgba(14,86,131,.85)}
.btn--primary:hover{background:var(--blue-700)}
.btn--ghost{background:var(--white);color:var(--ink);border:2px solid var(--ink)}
.btn--ghost svg{color:var(--blue)}
.btn--dark{background:var(--ink);color:var(--white);margin:6px 0 14px}
.btn--dark svg{color:var(--cyan)}
.hero__tags{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.hero__tags li{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:.95rem;color:var(--ink-2);background:var(--white);border:1px solid var(--alu-200);padding:6px 12px 6px 8px;border-radius:4px}
.hero__tags svg{width:22px;height:22px;color:var(--blue)}

/* Foto do hero num "caixilho" grafite */
.hero__media{margin:0;position:relative}
.frame{position:relative;padding:10px;background:linear-gradient(145deg,#3a4852,var(--ink) 55%,#11181d);border-radius:4px;box-shadow:var(--shadow)}
.frame img{width:100%;aspect-ratio:4/3;object-fit:cover;object-position:50% 40%}
.photo-cap{margin-top:10px;font-size:.88rem;color:var(--alu);border-left:3px solid var(--cyan);padding-left:10px}

/* Secções */
.section{padding:64px 0}
.section--tint{background:var(--glass-50);border-top:1px solid rgba(19,111,169,.12);border-bottom:1px solid rgba(19,111,169,.12)}
.kicker{display:inline-flex;align-items:center;gap:10px;font-weight:700;text-transform:uppercase;letter-spacing:.14em;font-size:.8rem;color:var(--blue);margin-bottom:8px}
.kicker::before{content:"";width:28px;height:4px;border-radius:2px;background:var(--cyan)}
.section__intro{color:var(--ink-2);max-width:40em;margin-bottom:28px}

/* Cartões de serviços */
.cards{display:grid;gap:16px}
.card{position:relative;display:flex;flex-direction:column;background:var(--white);border:1px solid rgba(28,37,44,.1);border-top:6px solid var(--accent);border-radius:var(--radius);padding:22px 22px 20px;box-shadow:var(--shadow)}
.card--pvc{--accent:var(--ink);--tint:#edf0f2}
.card--rail{--accent:var(--blue);--tint:var(--glass-50)}
.card--inside{--accent:var(--cyan);--tint:#e3f5fc}
.card__head{display:flex;align-items:center;gap:14px;margin-bottom:14px}
.card__head h3{margin:0}
.card__icon{width:56px;height:56px;border-radius:4px;display:grid;place-items:center;background:var(--tint);color:var(--blue)}
.card--pvc .card__icon{color:var(--ink)}
.card__icon svg{width:32px;height:32px}
.ticks{list-style:none;margin:0 0 18px;padding:0;display:grid;gap:7px}
.ticks li{display:flex;align-items:flex-start;gap:8px;font-weight:600;color:var(--ink);line-height:1.35}
.ticks svg{width:18px;height:18px;color:var(--blue);margin-top:2px}
.card__link{margin-top:auto;align-self:flex-start;display:inline-flex;align-items:center;gap:6px;font-weight:700;color:var(--ink);text-decoration:none;border-bottom:3px solid var(--accent);padding-bottom:2px}
.card__link svg{width:18px;height:18px}
.card__link:hover{color:var(--blue)}
.advice{display:flex;align-items:flex-start;gap:10px;margin:20px 0 0;color:var(--ink-2)}
.advice svg{width:20px;height:20px;color:var(--blue);margin-top:3px}

/* Nota Vale Eficiência */
.vale{display:flex;gap:16px;align-items:flex-start;margin-top:22px;padding:18px 20px;background:var(--white);border:1px solid rgba(19,111,169,.28);border-left:6px solid var(--blue);border-radius:var(--radius)}
.vale__icon{width:44px;height:44px;border-radius:4px;display:grid;place-items:center;background:var(--glass-50);color:var(--blue)}
.vale__icon svg{width:24px;height:24px}
.vale h3{font-size:1.3rem;margin-bottom:4px}
.vale p{margin:0;color:var(--ink-2)}
.vale a{color:var(--blue);font-weight:600}

/* Trabalhos (fotos reais) */
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.shot{margin:0;background:var(--white);border-radius:4px;overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column}
.shot img{width:100%;aspect-ratio:4/5;object-fit:cover}
.shot figcaption{padding:9px 10px 11px;font-size:.84rem;font-weight:600;line-height:1.3;color:var(--ink-2)}
.gallery__more{margin:22px 0 0}
.gallery__more a{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--blue);text-decoration:none;border-bottom:2px solid currentColor;padding-bottom:2px}
.gallery__more svg{width:20px;height:20px}

/* Sobre */
.about{display:grid;gap:30px;align-items:center}
.about__text p{color:var(--ink-2);max-width:36em}
.facts{display:grid;gap:10px;margin:22px 0 0}
.facts div{display:flex;flex-direction:column;gap:2px;background:var(--white);border-radius:4px;padding:12px 16px;border:1px solid rgba(28,37,44,.08);border-left:4px solid var(--cyan)}
.facts dt{font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--alu)}
.facts dd{margin:0;font-weight:700;color:var(--ink)}
.about__media{position:relative;margin:0;padding:10px;background:var(--ink);border-radius:4px;box-shadow:var(--shadow)}
.about__media img{width:100%;aspect-ratio:3/2;object-fit:cover}

/* Localização */
.loc{display:grid;gap:26px;align-items:center}
.addr{display:flex;gap:12px;font-style:normal;font-size:1.14rem;font-weight:600;color:var(--ink);margin:6px 0 18px}
.addr svg{width:26px;height:26px;color:var(--blue);margin-top:3px}
.addr .muted{font-weight:500;font-size:1rem}
.mapcard{position:relative;aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(28,37,44,.12);background:
  radial-gradient(circle at 52% 50%,rgba(19,111,169,.18) 0 46px,transparent 47px),
  linear-gradient(28deg,transparent 0 47%,#fff 47% 49.5%,transparent 49.5%),
  linear-gradient(-62deg,transparent 0 58%,rgba(255,255,255,.85) 58% 59.5%,transparent 59.5%),
  linear-gradient(90deg,transparent 0 30%,rgba(255,255,255,.6) 30% 31%,transparent 31%),
  repeating-linear-gradient(0deg,transparent 0 44px,rgba(95,110,120,.08) 44px 45px),
  repeating-linear-gradient(90deg,transparent 0 44px,rgba(95,110,120,.08) 44px 45px),
  #e2ebe6}
.mapcard__pin{position:absolute;left:52%;top:50%;transform:translate(-50%,-92%);width:52px;height:52px;display:grid;place-items:center;color:var(--blue)}
.mapcard__pin svg{width:52px;height:52px;fill:var(--white)}
.mapcard__label{position:absolute;left:16px;bottom:16px;margin:0;background:var(--white);padding:10px 14px;border-radius:4px;box-shadow:var(--shadow);line-height:1.2}
.mapcard__label strong{display:block;font-family:var(--font-display);text-transform:uppercase;font-size:1.3rem}
.mapcard__label span{font-size:.9rem;color:var(--alu)}

/* Contacto */
.contact{background:var(--ink);color:var(--white);position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;right:-60px;top:-60px;width:300px;height:300px;border:14px solid rgba(53,184,230,.16);background:
  linear-gradient(90deg,transparent calc(50% - 7px),rgba(53,184,230,.16) calc(50% - 7px) calc(50% + 7px),transparent calc(50% + 7px))}
.contact__in{position:relative}
.contact h2{color:var(--white);max-width:18em}
.kicker--light{color:var(--glass)}
.contact__lead{color:#c9d5db;max-width:36em;margin-bottom:26px}
.contact__grid{display:grid;gap:14px}
.bigbtn{display:flex;align-items:center;gap:16px;text-decoration:none;padding:20px 22px;border-radius:var(--radius);transition:transform .15s;min-width:0}
.bigbtn:hover{transform:translateY(-2px)}
.bigbtn svg{width:30px;height:30px}
.bigbtn__label{display:block;font-weight:600;font-size:.95rem;opacity:.92}
.bigbtn__value{display:block;font-family:var(--font-display);font-weight:800;font-size:clamp(1.3rem,6vw,2rem);line-height:1.15;overflow-wrap:anywhere}
.bigbtn--call{background:var(--blue);color:var(--white)}
.bigbtn--mail{background:var(--white);color:var(--ink)}
.bigbtn--mail .bigbtn__value{font-size:clamp(1.1rem,5vw,1.8rem);text-transform:none}
.bigbtn--mail svg{color:var(--blue)}

/* Rodapé */
.footer{background:#11181d;color:#aebbc2;padding:28px 0 30px;font-size:.9rem}
.footer p{margin:0 0 6px}
.footer strong{color:var(--white)}
.footer__legal{font-size:.82rem}
.footer__fb{display:inline-flex;align-items:center;gap:6px;color:#cfe3ee;text-decoration:none}
.footer__fb svg{width:16px;height:16px}
.footer__credit{font-size:.8rem;opacity:.75;margin-top:10px !important}

/* Barra fixa de contacto (telemóvel) */
.actionbar{position:fixed;left:0;right:0;bottom:0;z-index:50;display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-top:1px solid rgba(28,37,44,.12);box-shadow:0 -8px 24px -12px rgba(28,37,44,.4)}
.actionbar__btn{display:flex;align-items:center;justify-content:center;gap:10px;height:48px;border-radius:var(--radius);text-decoration:none;font-weight:800;font-size:1.08rem}
.actionbar__btn svg{width:22px;height:22px}
.actionbar__btn--call{background:var(--blue);color:var(--white)}
.actionbar__btn--mail{background:var(--ink);color:var(--white)}
.actionbar__btn--mail svg{color:var(--cyan)}

/* Tablet */
@media (min-width:640px){
  .wrap{padding:0 28px}
  .cta-row .btn{flex:0 1 auto}
  .btn__sub{white-space:nowrap}
  .cards{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(3,1fr);gap:14px}
  .contact__grid{grid-template-columns:1fr 1fr}
  .facts{grid-template-columns:repeat(3,1fr)}
}
/* Desktop */
@media (min-width:960px){
  body{padding-bottom:0}
  .actionbar{display:none}
  .nav{display:flex}
  .hero{padding:68px 0 92px}
  .hero__grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:56px}
  .frame img{aspect-ratio:1/1}
  .section{padding:96px 0}
  .cards{grid-template-columns:repeat(3,1fr);gap:22px}
  .card{padding:28px 26px 24px}
  .gallery{grid-template-columns:repeat(4,1fr);gap:16px}
  .about{grid-template-columns:1.05fr .95fr;gap:60px}
  .loc{grid-template-columns:.9fr 1.1fr;gap:48px}
  .footer__in{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:6px 24px}
  .footer__credit{flex-basis:100%;margin-top:4px !important}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}