/* ============================================================
   3H LOCAÇÕES — design tokens
   ============================================================ */
:root{
  --navy-deepest: #050b16;
  --navy-deep:    #081226;
  --navy:         #0d1d36;
  --navy-light:   #142b4a;
  --blue-electric:#2f8ff0;
  --blue-bright:  #57b4ff;
  --blue-glow:    #93d6ff;
  --white:        #f3f7fb;
  --chrome-1:     #eef2f6;
  --chrome-2:     #aebdcc;
  --gray:         #8694a8;
  --gray-dim:     #5b6a80;

  --font-display: 'Big Shoulders Display', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'IBM Plex Mono', monospace;

  --container: 1180px;
  --radius: 4px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin:0;
  background: var(--navy-deepest);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; }
h1,h2,h3{ margin:0; font-family: var(--font-display); font-weight:800; letter-spacing:.01em; }
p{ margin:0; }
button{ font-family: inherit; cursor:pointer; }
:focus-visible{ outline: 2px solid var(--blue-bright); outline-offset: 3px; border-radius: 2px; }

.grain{
  position: fixed; inset:0; pointer-events:none; z-index: 999;
  opacity:.035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.eyebrow{
  display:inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin: 0 0 14px;
}
.eyebrow-light{ color: var(--blue-glow); }

.section-title{
  font-size: clamp(2rem, 4.2vw, 3.4rem);
  line-height: 1.05;
  color: var(--white);
  text-transform: uppercase;
}
.section-title.light{ color: var(--white); }

.section-head{ max-width: 720px; margin: 0 auto 56px; text-align:center; }

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding: 14px 30px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease);
}
.btn-primary{
  background: linear-gradient(180deg, var(--blue-bright), var(--blue-electric));
  color: #04101f;
  box-shadow: 0 0 0 1px rgba(87,180,255,.4), 0 12px 30px -10px rgba(47,143,240,.7);
}
.btn-primary:hover{ transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(87,180,255,.6), 0 16px 36px -8px rgba(47,143,240,.85); }
.btn-ghost{
  border-color: rgba(87,180,255,.5);
  color: #ffffff !important;
  text-shadow: 0 1px 3px rgba(0,0,0,.6) !important;
  background: rgba(92, 93, 95, 0.08);
  box-shadow: 0 0 0 1px rgba(87,180,255,.25), 0 10px 26px -8px rgba(47,143,240,.55);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.btn-ghost:active{
  transform: translateY(0px) scale(.97);
  background: var(--blue-electric);
  box-shadow: 0 0 0 1px rgba(87,180,255,.9), 0 6px 16px -4px rgba(47,143,240,.7);
}
/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position: fixed; top:0; left:0; right:0; z-index: 200;
  background: rgba(5,11,22,.78);
  backdrop-filter: blur(10px) saturate(140%);
  transition: background .3s var(--ease);
}
.header-inner{
  max-width: var(--container); margin: 0 auto;
  display:flex; align-items:center; justify-content:space-between;
  padding: 12px 24px;
}
.brand{ display:flex; align-items:center; gap:12px; }
.brand-mark{ width:42px; height:42px; object-fit:cover; border-radius: 6px; }
.brand-text{ display:flex; flex-direction:column; line-height:1.1; }
.brand-name{ font-family: var(--font-display); font-weight:800; font-size:17px; letter-spacing:.04em; }
.brand-tag{ font-family: var(--font-mono); font-size:10px; letter-spacing:.1em; color: var(--gray); text-transform:uppercase; }

.main-nav{ display:flex; align-items:center; gap: 30px; }
.main-nav a{
  text-decoration: none !important;
  font-family: var(--font-mono); font-size:13px; letter-spacing:.04em;
  color: var(--chrome-2);
  position:relative; padding: 6px 0;
  transition: color .2s var(--ease);
}
.main-nav a:not(.nav-cta)::after{
  content:''; position:absolute; left:0; right:100%; bottom:0; height:1px;
  background: var(--blue-bright); transition: right .25s var(--ease);
}
.main-nav a:not(.nav-cta):hover{ color: var(--white); }
.main-nav a:not(.nav-cta):hover::after{ right:0; }
.nav-cta{
  background: var(--blue-electric); color:#04101f;
  padding: 9px 18px; border-radius: var(--radius);
  font-weight:600;
}
.nav-cta:hover{ background: var(--blue-bright); }


/* ============================================================
   HERO
   ============================================================ */
.hero{
  position: relative;
  min-height: 100vh;
  display:flex; align-items:center;
  padding: 140px 24px 80px;
  overflow:hidden;
  background:
    radial-gradient(circle at 18% 18%, rgba(47,143,240,.22), transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(87,180,255,.12), transparent 50%),
    var(--navy-deepest);

}
.hero-carousel{
  position: absolute !important;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  margin: 0;
  padding: 0;
}
.hero-carousel .carousel-inner{
  width: 100%;
  height: 100%;
}
.hero-carousel .carousel-item{
  width: 100%;
  height: 100%;
}
.hero-carousel .carousel-item img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay{
  position: absolute !important;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  background: linear-gradient(180deg,
    rgba(5,11,22,.78) 0%,
    rgba(5,11,22,.5) 45%,
    rgba(5,11,22,.85) 100%);
}

.hero-glow{
  position:absolute; top:-20%; left:50%; translate: -50% 0;
  width: 900px; height: 900px;
  background: radial-gradient(circle, rgba(47,143,240,.18), transparent 60%);
  filter: blur(40px);
  pointer-events:none;
}
.hero-frame{ position:absolute; inset: 24px; pointer-events:none; }
.corner{ position:absolute; width:34px; height:34px; border: 2px solid rgba(147,214,255,.55); }
.corner.tl{ top:0; left:0; border-right:none; border-bottom:none; }
.corner.tr{ top:0; right:0; border-left:none; border-bottom:none; }
.corner.bl{ bottom:0; left:0; border-right:none; border-top:none; }
.corner.br{ bottom:0; right:0; border-left:none; border-top:none; }
.rec-dot{
  position:absolute; top:6px; left:48px;
  width:8px; height:8px; border-radius:50%; background:#ff4d4d;
  box-shadow: 0 0 8px 2px rgba(255,77,77,.7);
  animation: blink 1.6s infinite;
}
@keyframes blink{ 50%{ opacity:.25; } }
.rec-label{
  position:absolute; top:0; left:66px;
  font-family: var(--font-mono); font-size:11px; letter-spacing:.12em;
  color: var(--gray); text-transform:uppercase;
}
.frame-counter{
  position:absolute; top:0; right:0;
  font-family: var(--font-mono); font-size:11px; letter-spacing:.06em;
  color: var(--blue-glow);
}

.hero-content{ position:relative; z-index:3; max-width: 760px; margin: 0 auto; text-align:center; }
.hero-title{
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 24px;
}
.hero-title-accent{
  background: linear-gradient(180deg, var(--blue-glow), var(--blue-electric));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.hero-sub{
  font-size: 1.1rem; color: var(--chrome-2);
  max-width: 540px; margin: 0 auto 36px;
}
.hero-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

.hero-skyline{
  position:absolute; bottom:0; left:0; width:100%; height:30%;
  fill: var(--navy); opacity:.9; z-index:1;
}
.hero-sweep{
  position:absolute; left:-30%; bottom:8%; width:160%; height:2px;
  background: linear-gradient(90deg, transparent, var(--blue-bright), transparent);
  filter: blur(1px);
  animation: sweep 7s var(--ease) infinite;
  z-index:2;
}

@keyframes sweep{
  0%{ transform: translateX(-20%) scaleX(.6); opacity:0; }
  10%{ opacity:.8; }
  50%{ transform: translateX(20%) scaleX(1); opacity:.5; }
  90%{ opacity:0; }
  100%{ transform: translateX(40%) scaleX(.6); opacity:0; }
}

/* ============================================================
   MANIFESTO
   ============================================================ */
.manifesto{
  background: var(--white);
  color: var(--navy-deep);
  padding: 120px 24px;
}
.manifesto .section-title{ color: var(--navy-deep); }
.manifesto-lead{
  max-width: 760px; margin: 0 auto 28px;
  font-size: 1.3rem; line-height:1.5; font-weight:500;
  text-align:center; color: var(--navy);
}
.manifesto-body{
  max-width: 700px; margin: 0 auto; color: var(--gray-dim);
  font-size: 1.02rem; text-align:center;
}
.manifesto-close{ margin-top: 56px; }

.pillars{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
  max-width: 980px; margin: 64px auto;
}
.pillar{
  position:relative;
  text-align:center;
  padding: 38px 22px 30px;
  border: 1px solid #e1e8f0;
  border-radius: var(--radius);
  background: linear-gradient(180deg, #ffffff, #f4f8fc);
}
.pillar-glyph{
  display:inline-flex; align-items:center; justify-content:center;
  width:56px; height:56px; margin-bottom:18px;
  font-family: var(--font-display); font-size: 30px; font-weight:900;
  color: #fff;
  background: linear-gradient(160deg, var(--blue-bright), var(--blue-electric) 60%, var(--navy));
  border-radius: 50%;
  box-shadow: 0 8px 20px -6px rgba(47,143,240,.55);
}
.pillar h3{
  font-size: 1.3rem; text-transform:uppercase; color: var(--navy-deep); margin-bottom: 10px;
}
.pillar p{ color: var(--gray-dim); font-size: .96rem; }

/* ============================================================
   FOUNDERS
   ============================================================ */
.founders{ background: var(--navy-deep); padding: 120px 24px; }
.founders-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  max-width: 1040px; margin: 0 auto;
}
.founder-card{
  position:relative;
  padding: 30px 26px 28px;
  background: linear-gradient(160deg, var(--navy-light), var(--navy));
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.founder-card:hover{ transform: translateY(-6px); border-color: rgba(87,180,255,.4); }
.founder-frame{
  display:block; width: 100%; height: 4px; margin-bottom: 22px;
  background: linear-gradient(90deg, var(--blue-electric), transparent);
}
.founder-role{
  font-family: var(--font-mono); font-size: 11px; letter-spacing:.14em;
  color: var(--blue-bright); text-transform:uppercase;
}
.founder-card h3{
  font-size: 1.6rem; text-transform:uppercase; margin: 10px 0 12px; color: var(--white);
}
.founder-card p{ color: var(--gray); font-size: .95rem; }

/* ============================================================
   SERVICES
   ============================================================ */
.services{ background: var(--white); color: var(--navy-deep); padding: 120px 24px; }
.services .section-title{ color: var(--navy-deep); }
.services-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
  max-width: 1040px; margin: 0 auto;
}
.service-card{
  padding: 26px 24px;
  border-left: 3px solid var(--blue-electric);
  background: #f4f8fc;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.service-card:hover{ background: #eaf3fc; border-color: var(--blue-bright); }
.service-card h3{ font-size: 1.15rem; text-transform:uppercase; color: var(--navy-deep); margin-bottom: 10px; }
.service-card p{ color: var(--gray-dim); font-size: .94rem; }

/* ============================================================
   ACERVO
   ============================================================ */
.archive{ background: var(--navy-deepest); padding: 120px 24px 80px; }
.archive-grid{
  display:grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: 160px;
  gap: 16px; max-width: 1180px; margin: 0 auto;
}
.archive-card{
  position:relative; margin:0;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--navy-light), var(--navy-deep));
  overflow:hidden;
  display:flex; align-items:flex-end;
  transition: transform .3s var(--ease);
}
.archive-card:hover{ transform: scale(1.02); }
.archive-card::before{
  content:''; position:absolute; inset:0;
  background: linear-gradient(0deg, rgba(0,0,0,.65), transparent 60%);
}
.archive-card--big{ grid-column: span 2; grid-row: span 2; }
.frame-tag{
  position:absolute; top:12px; left:12px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing:.1em;
  color: var(--blue-glow); z-index:2;
}
.archive-card figcaption{
  position:relative; z-index:2; padding: 14px 16px;
  font-family: var(--font-display); font-weight:700; text-transform:uppercase;
  font-size: 1rem; color: var(--white);
}
.archive-note{
  text-align:center; margin-top: 40px;
  font-family: var(--font-mono); font-size: 12px; letter-spacing:.04em;
  color: var(--gray);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact{ background: var(--navy-deep); padding: 120px 24px; }
.contact-inner{
  max-width: 1040px; margin:0 auto;
  display:grid; grid-template-columns: 1fr 1fr; gap: 64px;
}
.contact-text{ color: var(--gray); margin: 18px 0 32px; max-width: 420px; }
.contact-info{ list-style:none; display:flex; flex-direction:column; gap:14px; }
.contact-info li{ font-size: .95rem; color: var(--chrome-1); }
.contact-info span{
  display:block; font-family: var(--font-mono); font-size: 11px;
  letter-spacing:.1em; color: var(--blue-bright); text-transform:uppercase; margin-bottom: 2px;
}

.contact-form{ display:flex; flex-direction:column; gap: 18px; }
.field{ display:flex; flex-direction:column; gap:6px; }
.field label{
  font-family: var(--font-mono); font-size: 11px; letter-spacing:.08em;
  text-transform:uppercase; color: var(--gray);
}
.field input, .field select, .field textarea{
  background: rgba(62, 134, 230, 0.04);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius);
  padding: 12px 14px;
  color: var(--white);
  font-family: var(--font-body); font-size: .95rem;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.field select{
  width: 100%;
  max-width: 100%;
  background-color: #58b2f7;
  color: #0d1d36;
  font-weight: 600;
}
.field select option{
  background-color: #58b2f7;
  color: #0d1d36;
}
.field input:focus, .field select:focus, .field textarea:focus{
  border-color: var(--blue-bright); background: rgba(255,255,255,.07);
}
.field select:focus{
  background-color: #dceefc !important;
  color: #0d1d36 !important;
  border-color: var(--blue-bright);
}
.field textarea{ resize: vertical; min-height: 90px; }
.form-feedback{
  min-height: 18px; font-family: var(--font-mono); font-size: 12px; color: var(--blue-glow);
}
/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  background: var(--navy-deepest);
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 56px 24px 30px;
}
.footer-top{
  max-width: var(--container);
  margin: 0 auto 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand{ display:flex; align-items:center; gap:14px; }
.footer-mark{ width:42px; height:42px; border-radius:6px; object-fit:cover; }
.footer-name{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: .04em;
  color: var(--white);
  display: block;
}
.footer-tag{ font-family: var(--font-mono); font-size:11px; letter-spacing:.1em; color: var(--gray); text-transform:uppercase; }
.footer-social{ display:flex; align-items: center; gap: 12px; }
/* ============================================================
   FOOTER — Ícones de redes sociais (círculos com ícone SVG)
   ============================================================ */
.social-icon{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.18);
  background: rgba(255,255,255,.04);
  color: var(--chrome-1);
  transition: transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), color .25s var(--ease);
}
.social-icon svg{
  width: 20px;
  height: 20px;
}
.social-icon:hover{
  transform: translateY(-3px);
  background: var(--blue-electric);
  border-color: var(--blue-bright);
  color: #04101f;
}


.footer-columns{
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.footer-col h4{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--blue-bright);
  margin-bottom: 18px;
  font-weight: 600;
}
.footer-col{ display:flex; flex-direction:column; }
.footer-col a{
  display:block;
  font-size: 13.5px;
  color: var(--chrome-2);
  padding: 6px 0;
  transition: color .2s var(--ease);
}
.footer-col a:hover{ color: var(--blue-bright); }

.footer-copy{
  font-size:12px; color: var(--gray-dim);
  text-align:center; margin-top: 40px;
}
/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-top{
  position: fixed; bottom: 24px; right: 24px; z-index: 150;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--blue-electric); color:#04101f; border:none;
  font-size: 18px; opacity:0; pointer-events:none;
  transition: opacity .3s var(--ease), transform .3s var(--ease);
}
.back-top.show{ opacity:1; pointer-events:auto; }
.back-top:hover{ transform: translateY(-3px); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
/* ============================================================
   NAV-TOGGLE (botão hambúrguer) — versão animada em "X"
   ------------------------------------------------------------
   Estrutura esperada no HTML:
     <button class="nav-toggle" id="navToggle">
       <span></span><span></span><span></span>
     </button>
   O JS adiciona a classe .open no botão quando o menu abre.
   As 3 <span> viram as 2 linhas do "X" via rotação/translação.
   ============================================================ */
.nav-toggle{
  position: relative;
  z-index: 260; /* fica acima do painel do menu e do backdrop */
  display: none; /* só aparece em telas pequenas, ver @media abaixo */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  padding: 6px;
}
.nav-toggle span{
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 1px;
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
/* Quando aberto: 1ª linha vira diagonal \, 2ª some, 3ª vira diagonal / */
.nav-toggle.open span:nth-child(1){
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2){
  opacity: 0;
}
.nav-toggle.open span:nth-child(3){
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   NAV-BACKDROP — camada escura atrás do painel do menu
   ------------------------------------------------------------
   Fica escondida (opacity:0 + pointer-events:none) até o JS
   adicionar a classe .show, junto com a abertura do menu.
   ============================================================ */
.nav-backdrop{
  display: none; /* só existe/some em telas pequenas */
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s var(--ease);
  z-index: 240; /* abaixo do painel (250) e do botão (260) */
}
.nav-backdrop.show{
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   BREAKPOINT PRINCIPAL — tablets e celulares (até 880px)
   ============================================================ */
@media (max-width: 880px){

  .nav-toggle{ display: flex; }
  .nav-backdrop{ display: block; }

  /* ----------------------------------------------------------
     PAINEL LATERAL DO MENU (#mainNav)
     Desliza a partir da esquerda, ocupa até 320px de largura
     (ou 82% da tela em celulares bem estreitos) e a altura
     inteira da tela. Some via translateX quando fechado.
     ---------------------------------------------------------- */
  .main-nav{
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: min(82vw, 320px);

    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 4px;

    background: var(--navy-deep);
    border-right: 1px solid rgba(255,255,255,.08);
    padding: 32px 32px;

    max-height: none;      /* sobrescreve o max-height usado no desktop */
    overflow-y: auto;

    transform: translateX(-100%); /* escondido fora da tela, à esquerda */
    transition: transform .35s var(--ease);
    z-index: 250;
  }
  .main-nav.open{
    transform: translateX(0); /* desliza para dentro da tela */
  }

  /* Itens do menu, na mesma ordem do HTML (Manifesto, Fundadores,
     Serviços, Acervo, Solicitar locação) */
  .main-nav a{
    width: 100%;
    padding: 16px 0;
    font-size: 17px;
    border-bottom: 1px solid rgba(255,255,255,.06);
  }
  .main-nav a:not(.nav-cta)::after{
    display: none; /* remove o sublinhado animado do modo desktop */
  }

  .nav-cta{
    margin-top: 18px;
    width: 100%;
    text-align: center;
  }

  /* ----------------------------------------------------------
     TRAVAR O SCROLL DO FUNDO QUANDO O MENU ESTÁ ABERTO
     O JS adiciona/remove a classe .nav-open no <body>.
     ---------------------------------------------------------- */
  body.nav-open{
    overflow: hidden;
  }

  /* ----------------------------------------------------------
     GRIDS QUE VIRAM 1 COLUNA EM TELAS MENORES
     ---------------------------------------------------------- */
  .pillars, .founders-grid, .services-grid{ grid-template-columns: 1fr; }
 .archive-grid{
  grid-template-columns: repeat(2,1fr);
  grid-auto-rows: 210px;
  gap: 14px;
}
.archive-card--big{ grid-column: span 2; grid-row: span 1; }
.archive-card figcaption{
  font-size: .9rem;
  line-height: 1.3;
}
  .contact-inner{ grid-template-columns: 1fr; }
  .footer-columns{ grid-template-columns: repeat(2, 1fr); }

  /* footer-top no mobile: vira coluna, mantendo o alinhamento centralizado */
.footer-top{
  flex-direction: column;
  gap: 24px;

}
}

/* ============================================================
   BREAKPOINT — celulares médios (até 600px)
   Ajusta espaçamentos e tamanhos de fonte para não ficar
   apertado em telas de ~360-600px de largura.
   ============================================================ */
@media (max-width: 600px){
  .hero{ padding: 110px 18px 64px; }
  .hero-sub{ font-size: 1rem; }
  .hero-actions{ flex-direction: column; width: 100%; }
  .hero-actions .btn{ width: 100%; }

  .manifesto, .founders, .services, .archive, .contact{
    padding-left: 18px;
    padding-right: 18px;
  }
  .manifesto{ padding-top: 80px; padding-bottom: 80px; }
  .founders{ padding-top: 80px; padding-bottom: 80px; }
  .services{ padding-top: 80px; padding-bottom: 80px; }
  .archive{ padding-top: 80px; padding-bottom: 60px; }
  .contact{ padding-top: 80px; padding-bottom: 80px; }

  .section-head{ margin-bottom: 36px; }
  .manifesto-lead{ font-size: 1.1rem; }

  .archive-grid{ grid-template-columns: 1fr; gap: 12px; }
  .archive-card--big{ grid-column: span 1; grid-row: span 1; }
  .archive-card{ height: 200px; }

  .footer-columns{ grid-template-columns: 1fr; gap: 26px; }
}

/* ============================================================
   BREAKPOINT — celulares pequenos (até 480px)
   ============================================================ */
@media (max-width: 480px){
  .hero{ padding-top: 100px; }
  .header-inner{ padding: 10px 16px; }
  .brand-tag{ display:none; }

  .main-nav{ width: 88vw; padding: 28px 24px; }

  .hero-title{ font-size: clamp(2.1rem, 9vw, 3rem); }
  .section-title{ font-size: clamp(1.7rem, 8vw, 2.4rem); }

  .pillar, .founder-card, .service-card{ padding: 26px 18px; }
  .contact-form{ gap: 14px; }
}

/* ============================================================
   BREAKPOINT — celulares bem estreitos (até 360px)
   Ex.: iPhone SE, modelos antigos de entrada
   ============================================================ */
@media (max-width: 360px){
  .hero-sub{ font-size: .92rem; }
  .btn{ padding: 12px 20px; font-size: 12px; }
  .main-nav{ width: 92vw; padding: 24px 18px; }
  .main-nav a{ font-size: 15.5px; padding: 13px 0; }
}
/* ============================================================
   BACK TO TOP — botão com anel de progresso de rolagem +
   rótulo deslizante explicativo
   ------------------------------------------------------------
   Estrutura: um <button> com 3 filhos:
     .back-top-ring   -> SVG com 2 círculos (fundo + progresso)
     .back-top-icon   -> seta ↑
     .back-top-label  -> texto "Voltar ao topo", oculto por
                          padrão, revelado no hover/focus
   O progresso do anel (stroke-dashoffset) é controlado via JS,
   proporcional ao quanto da página já foi rolada.
   ============================================================ */
.back-top{
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 150;

  display: flex;
  align-items: center;
  gap: 0;

  height: 52px;
  width: 52px;
  padding: 0;
  border: none;
  border-radius: 999px;

  background: var(--navy-deep);
  color: var(--white);
  box-shadow: 0 8px 22px -8px rgba(0,0,0,.5);

  opacity: 0;
  pointer-events: none;
  overflow: hidden;
  transition: opacity .3s var(--ease), transform .3s var(--ease), width .35s var(--ease);
}
.back-top.show{ opacity: 1; pointer-events: auto; }

.back-top:hover,
.back-top:focus-visible{
  width: 190px;
  transform: translateY(-3px);
}

.back-top-ring{
  position: absolute;
  left: 0; top: 0;
  width: 52px;
  height: 52px;
  transform: rotate(-90deg);
  flex-shrink: 0;
}
.back-top-ring-bg{
  fill: none;
  stroke: rgba(255,255,255,.12);
  stroke-width: 3;
}
.back-top-ring-fill{
  fill: none;
  stroke: var(--blue-bright);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-dasharray: 131.9;
  stroke-dashoffset: 131.9;
  transition: stroke-dashoffset .1s linear;
}

.back-top-icon{
  position: relative;
  z-index: 2;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.back-top-label{
  position: relative;
  z-index: 2;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding-right: 20px;

  opacity: 0;
  transform: translateX(-8px);
  transition: opacity .25s var(--ease) .05s, transform .25s var(--ease) .05s;
}
.back-top:hover .back-top-label,
.back-top:focus-visible .back-top-label{
  opacity: 1;
  transform: translateX(0);
}