/* ==========================================================
   INTERSISA - site institucional
   Paleta extraída da logomarca
   ========================================================== */
:root {
    --grafite: #333638;
    --grafite-900: #232527;
    --ambar: #F5B21A;
    --oliva: #B0A53F;
    --ciano: #1EB4E6;
    --ciano-700: #0B86B5;
    --verde: #6CC04A;
    --cinza-50: #F5F5F5;
    --cinza-200: #E3E5E6;
    --cinza-600: #62676B;
    --branco: #FFFFFF;

    --fonte: 'Montserrat', 'Segoe UI', Arial, sans-serif;
    --raio: 14px;
    --topo-altura: 76px;
    --sombra: 0 10px 30px rgba(35, 37, 39, .10);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: var(--topo-altura); }

body {
    margin: 0;
    font-family: var(--fonte);
    font-size: 16px;
    line-height: 1.6;
    color: var(--grafite);
    background: var(--branco);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
svg { display: block; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.pular {
    position: absolute; left: -9999px; top: 0; z-index: 200;
    background: var(--ambar); color: var(--grafite-900); padding: 10px 16px; font-weight: 700;
}
.pular:focus { left: 8px; top: 8px; }

:focus-visible { outline: 3px solid var(--ambar); outline-offset: 3px; }

/* ---------- Botões ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 11px 22px; border: 2px solid transparent; border-radius: 999px;
    font: 700 13px/1 var(--fonte); letter-spacing: .06em; text-transform: uppercase;
    cursor: pointer; transition: transform .15s, background-color .15s, color .15s, border-color .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn__icone { width: 18px; height: 18px; margin: -3px 8px -3px 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn--grande { padding: 16px 30px; font-size: 14px; }
.btn--ambar { background: var(--ambar); color: var(--grafite-900); }
.btn--ambar:hover { background: #FFC43A; }
.btn--ciano { background: var(--ciano-700); color: var(--branco); }
.btn--ciano:hover { background: #0A769F; }
.btn--grafite { background: var(--grafite-900); color: var(--branco); }
.btn--grafite:hover { background: #000; }
.btn--contorno { border-color: var(--grafite); color: var(--grafite); }
.btn--contorno:hover { background: var(--grafite); color: var(--branco); }

/* ---------- Logo ---------- */
.logo { position: relative; display: inline-block; padding-top: 16px; line-height: 1; }
.logo__arcos { position: absolute; left: -2px; top: 0; width: 44px; height: 22px; }
.logo__nome { position: relative; font-weight: 900; font-size: 27px; letter-spacing: -.01em; color: var(--grafite); }
.logo--claro .logo__nome { color: var(--branco); }

/* ---------- Topo ---------- */
.topo {
    position: sticky; top: 0; z-index: 100; height: var(--topo-altura);
    background: var(--branco); border-bottom: 1px solid transparent;
    transition: box-shadow .2s, border-color .2s;
}
.topo.rolou { box-shadow: 0 4px 20px rgba(35, 37, 39, .08); border-color: var(--cinza-200); }
.topo__linha { height: 100%; display: flex; align-items: center; gap: 40px; }

.nav { flex: 1; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__lista { display: flex; gap: 6px; }
.nav__item { position: relative; }
.nav__item > a {
    display: block; padding: 10px 14px; border-radius: 8px;
    font-weight: 600; font-size: 15px;
}
.nav__item > a:hover { color: var(--ciano-700); }
.nav__item--sub > a::after {
    content: ''; display: inline-block; margin-left: 8px; width: 6px; height: 6px;
    border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
    transform: translateY(-3px) rotate(45deg);
}
.nav__sub {
    position: absolute; left: 0; top: 100%; min-width: 250px; padding: 10px;
    background: var(--branco); border-radius: var(--raio); box-shadow: var(--sombra);
    border-top: 4px solid var(--ambar);
    opacity: 0; visibility: hidden; transform: translateY(8px);
    transition: opacity .18s, transform .18s, visibility .18s;
}
.nav__item--sub:hover .nav__sub,
.nav__item--sub:focus-within .nav__sub { opacity: 1; visibility: visible; transform: none; }
.nav__sub a { display: block; padding: 10px 12px; border-radius: 8px; font-size: 14px; font-weight: 500; }
.nav__sub a:hover { background: var(--cinza-50); color: var(--ciano-700); }
.nav__acoes { display: flex; gap: 8px; }
.nav__acoes .btn { padding-left: 16px; padding-right: 16px; white-space: nowrap; }

.topo__menu {
    display: none; margin-left: auto; width: 44px; height: 44px; padding: 10px;
    background: none; border: 0; cursor: pointer;
}
.topo__menu span { display: block; height: 3px; margin: 4px 0; border-radius: 2px; background: var(--grafite); transition: transform .2s, opacity .2s; }
.topo__menu[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.topo__menu[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.topo__menu[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; height: calc(100vh - var(--topo-altura)); min-height: 520px; max-height: 760px; overflow: hidden; }
.hero__slides { position: relative; height: 100%; }
.slide {
    position: absolute; inset: 0; display: flex; align-items: center; overflow: hidden;
    opacity: 0; visibility: hidden; transition: opacity .7s, visibility .7s;
}
.slide.ativo { opacity: 1; visibility: visible; }
.slide--ciano { background: var(--ciano-700); color: var(--branco); }
.slide--grafite { background: var(--grafite-900); color: var(--branco); }
.slide--ambar { background: var(--ambar); color: var(--grafite-900); }

.slide__conteudo { position: relative; z-index: 2; }
.slide h1, .slide h2 {
    max-width: 680px; font-size: clamp(30px, 4.6vw, 56px); line-height: 1.08;
    font-weight: 900; text-transform: uppercase; letter-spacing: -.01em;
}
.slide p { max-width: 520px; margin: 22px 0 32px; font-size: clamp(16px, 1.5vw, 19px); font-weight: 500; }
.slide.ativo .slide__conteudo > * { animation: subir .7s both; }
.slide.ativo .slide__conteudo > *:nth-child(2) { animation-delay: .12s; }
.slide.ativo .slide__conteudo > *:nth-child(3) { animation-delay: .24s; }
@keyframes subir { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: none; } }

/* arco gigante da marca saindo da base, à direita */
.slide__arcos { position: absolute; right: -6%; bottom: 0; width: min(62vw, 900px); height: auto; aspect-ratio: 2 / 1; z-index: 1; }
.slide--ambar .slide__arcos { filter: brightness(0) invert(1); opacity: .35; }
.slide__formas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 1; color: rgba(255, 255, 255, .55); }
.slide--grafite .slide__formas { color: var(--ciano); }
.slide--ambar .slide__formas { color: var(--grafite); }

.hero__controles {
    position: absolute; left: 0; right: 0; bottom: 26px; z-index: 3;
    display: flex; align-items: center; justify-content: center; gap: 14px;
}
.hero__seta {
    width: 38px; height: 38px; border-radius: 50%; border: 2px solid currentColor;
    background: rgba(35, 37, 39, .35); color: var(--branco); font-size: 22px; line-height: 1; cursor: pointer;
}
.hero__seta:hover { background: var(--grafite-900); }
.hero__pontos { display: flex; gap: 8px; padding: 8px 12px; border-radius: 999px; background: rgba(35, 37, 39, .35); }
.hero__pontos button {
    width: 12px; height: 12px; padding: 0; border: 0; border-radius: 999px;
    background: rgba(255, 255, 255, .6); cursor: pointer; transition: width .25s, background-color .25s;
}
.hero__pontos button[aria-current="true"] { width: 34px; background: var(--branco); }

/* ---------- Seções ---------- */
.secao { position: relative; padding: 96px 0; overflow: hidden; }
.secao--cinza { background: var(--cinza-50); }
.secao--grafite { background: var(--grafite-900); color: var(--branco); }

.rotulo {
    display: inline-block; margin-bottom: 14px; padding-left: 40px; position: relative;
    font-size: 13px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--ciano-700);
}
.rotulo::before { content: ''; position: absolute; left: 0; top: 50%; width: 28px; height: 4px; margin-top: -2px; border-radius: 2px; background: var(--ambar); }
.rotulo--ambar { color: var(--ambar); }

.titulo { font-size: clamp(26px, 3vw, 38px); line-height: 1.15; font-weight: 800; text-transform: uppercase; letter-spacing: -.005em; }
.cabecalho { max-width: 720px; margin-bottom: 52px; }
.cabecalho p { margin-top: 14px; font-size: 18px; color: var(--cinza-600); }

/* ---------- Sobre ---------- */
.sobre { display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }
.sobre__texto p { margin-top: 18px; color: var(--cinza-600); }
.sobre__texto .destaque { font-size: 19px; font-weight: 600; color: var(--grafite); }
.sobre__texto .btn { margin-top: 30px; }
.sobre__arte {
    position: relative; aspect-ratio: 1; max-width: 440px; width: 100%; margin: 0 auto;
    border-radius: 50%; background: var(--cinza-50);
}
.sobre__arcos { position: absolute; left: 14%; top: 22%; width: 72%; height: auto; aspect-ratio: 2 / 1; }
.sobre__arte::after {
    content: 'INTERSISA'; position: absolute; left: 0; right: 0; top: 54%;
    text-align: center; font-weight: 900; font-size: clamp(34px, 5vw, 56px); line-height: 1; color: var(--grafite);
}
.sobre__formas { position: absolute; inset: -8%; width: 116%; height: 116%; color: var(--ciano); }

/* ---------- Cards de soluções ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
    position: relative; padding: 34px 30px; border-radius: var(--raio);
    background: var(--branco); border: 1px solid var(--cinza-200); overflow: hidden;
    transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card::before {
    content: ''; position: absolute; left: 0; top: 0; height: 5px; width: 100%;
    background: var(--ambar); transform: scaleX(0); transform-origin: left; transition: transform .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--sombra); border-color: transparent; }
.card:hover::before { transform: scaleX(1); }
.card__icone {
    display: inline-flex; align-items: center; justify-content: center;
    width: 58px; height: 58px; margin-bottom: 22px; border-radius: 50%;
    background: var(--cinza-50); color: var(--ciano-700);
}
.card__icone svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 19px; font-weight: 800; margin-bottom: 10px; }
.card p { color: var(--cinza-600); font-size: 15px; }

/* ---------- Faixa de destaques ---------- */
.faixa { position: relative; padding: 84px 0; background: var(--ciano); color: var(--grafite-900); overflow: hidden; }
.faixa__arcos { position: absolute; right: -80px; top: -40px; width: 520px; height: 260px; transform: rotate(180deg); filter: brightness(0) invert(1); opacity: .22; }
.faixa .container { position: relative; }
.numeros { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 48px; }
.numeros li { padding-left: 20px; border-left: 5px solid var(--grafite-900); }
.numeros strong { display: block; font-size: clamp(28px, 3vw, 40px); line-height: 1.1; font-weight: 900; }
.numeros span { display: block; margin-top: 8px; font-weight: 600; font-size: 15px; }

/* ---------- Segmentos ---------- */
.secao--segmentos {
    background:
        radial-gradient(60% 90% at 100% 100%, rgba(245, 178, 26, .30), transparent 70%),
        radial-gradient(40% 60% at 0% 0%, rgba(30, 180, 230, .14), transparent 70%),
        var(--branco);
}
.cabecalho--centro { margin-left: auto; margin-right: auto; text-align: center; max-width: 860px; }
.cabecalho--centro .titulo span { color: var(--ciano-700); }

.trilho { position: relative; max-width: 1440px; margin: 0 auto; }
.trilho__lista {
    display: flex; gap: 20px; padding: 12px 64px 28px; overflow-x: auto;
    scroll-snap-type: x mandatory; scroll-padding: 0 64px; scrollbar-width: none;
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 64px, #000 calc(100% - 64px), transparent);
    mask-image: linear-gradient(90deg, transparent, #000 64px, #000 calc(100% - 64px), transparent);
}
.trilho__lista::-webkit-scrollbar { display: none; }
.trilho__seta {
    position: absolute; top: 50%; z-index: 2; width: 46px; height: 46px; margin-top: -31px;
    border: 0; border-radius: 50%; background: var(--grafite-900); color: var(--branco);
    font-size: 28px; line-height: 1; cursor: pointer; box-shadow: var(--sombra); transition: opacity .2s, background-color .2s;
}
.trilho__seta:hover { background: var(--ciano-700); }
.trilho__seta:disabled { opacity: .25; cursor: default; background: var(--grafite-900); }
.trilho__seta--ant { left: 10px; }
.trilho__seta--prox { right: 10px; }

.seg {
    flex: 0 0 224px; scroll-snap-align: start; display: flex; flex-direction: column; align-items: center;
    padding-bottom: 22px; border-radius: var(--raio); background: var(--branco); overflow: hidden;
    box-shadow: 0 6px 20px rgba(35, 37, 39, .09); text-align: center; transition: transform .2s, box-shadow .2s;
}
.seg:hover { transform: translateY(-6px); box-shadow: 0 14px 30px rgba(35, 37, 39, .16); }
.seg__topo { position: relative; width: 100%; height: 104px; background: var(--ciano-700); border-bottom: 5px solid var(--ambar); overflow: hidden; }
.seg__topo svg { position: absolute; right: -30px; bottom: -6px; width: 190px; height: 95px; filter: brightness(0) invert(1); opacity: .22; }
.seg:nth-child(4n+2) .seg__topo { background: var(--ambar); border-color: var(--grafite-900); }
.seg:nth-child(4n+3) .seg__topo { background: var(--grafite-900); }
.seg:nth-child(4n+3) .seg__topo svg { filter: none; opacity: .9; }
.seg:nth-child(4n+4) .seg__topo { background: var(--oliva); border-color: var(--grafite-900); }
.seg__icone {
    position: relative; display: flex; align-items: center; justify-content: center;
    width: 96px; height: 96px; margin-top: -52px; border-radius: 50%;
    background: var(--branco); box-shadow: 0 4px 14px rgba(35, 37, 39, .14); color: var(--grafite);
}
.seg__icone svg { width: 46px; height: 46px; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linecap: round; stroke-linejoin: round; }
.seg:hover .seg__icone { color: var(--ciano-700); }
.seg h3 { flex: 1; display: flex; flex-direction: column; justify-content: center; min-height: 66px; margin: 14px 0 16px; padding: 0 16px; font-size: 17px; line-height: 1.25; font-weight: 800; }
.seg h3 small { font-size: 13px; font-weight: 600; color: var(--cinza-600); }
.seg .btn { width: calc(100% - 40px); }

/* ---------- Contato ---------- */
.contato { position: relative; z-index: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.contato__texto p { margin-top: 18px; font-size: 18px; color: #C9CDD0; }
.contato__formas { position: absolute; inset: 0; width: 100%; height: 100%; color: rgba(30, 180, 230, .22); }
.form { display: grid; gap: 16px; padding: 34px; border-radius: var(--raio); background: var(--branco); color: var(--grafite); }
.form label { display: grid; gap: 6px; font-size: 13px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; }
.form input, .form textarea {
    width: 100%; padding: 12px 14px; border: 2px solid var(--cinza-200); border-radius: 10px;
    font: 500 16px/1.4 var(--fonte); color: var(--grafite); background: var(--branco); resize: vertical;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--ciano-700); }
.form__fone { justify-self: center; font-size: 20px; font-weight: 800; letter-spacing: .02em; color: var(--grafite); }
.form__fone:hover { color: var(--ciano-700); }

/* ---------- Rodapé ---------- */
.rodape { background: #1A1C1D; color: #B9BEC2; padding: 64px 0 0; font-size: 15px; }
.rodape__linha { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 48px; }
.rodape p { margin-top: 16px; }
.rodape h4 { margin-bottom: 14px; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; color: var(--branco); }
.rodape nav a { display: block; padding: 5px 0; }
.rodape nav a:hover { color: var(--ambar); }
.rodape__base { padding-top: 22px; padding-bottom: 22px; border-top: 1px solid #2E3133; font-size: 13px; }

/* ---------- WhatsApp flutuante ---------- */
.whats {
    position: fixed; right: 20px; bottom: 20px; z-index: 90;
    display: inline-flex; align-items: center; gap: 10px; padding: 12px 18px 12px 14px;
    border-radius: 999px; background: #1F8F4E; color: var(--branco);
    font-weight: 700; font-size: 14px; box-shadow: 0 8px 24px rgba(0, 0, 0, .25); transition: transform .15s;
}
.whats:hover { transform: translateY(-3px); }
.whats svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linejoin: round; }

/* ---------- Revelar ao rolar (só com JS ativo) ---------- */
.js .revelar { opacity: 0; transform: translateY(28px); transition: opacity .6s, transform .6s; }
.js .revelar.visivel { opacity: 1; transform: none; }

/* ---------- Responsivo ---------- */
@media (max-width: 1260px) {
    .topo__menu { display: block; }
    .nav {
        position: absolute; left: 0; right: 0; top: var(--topo-altura);
        flex-direction: column; align-items: stretch; gap: 16px; padding: 16px 24px 24px;
        background: var(--branco); box-shadow: 0 20px 30px rgba(35, 37, 39, .12);
        max-height: calc(100vh - var(--topo-altura)); overflow-y: auto;
        display: none;
    }
    .nav.aberto { display: flex; }
    .nav__lista { flex-direction: column; gap: 0; }
    .nav__item > a { padding: 14px 4px; border-bottom: 1px solid var(--cinza-200); border-radius: 0; }
    .nav__sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border-top: 0; padding: 4px 0 4px 12px; }
    .nav__acoes { flex-direction: column; }

    .cards { grid-template-columns: repeat(2, 1fr); }
    .numeros { grid-template-columns: repeat(2, 1fr); }
    .sobre, .contato { grid-template-columns: 1fr; gap: 44px; }
    .sobre__arte { max-width: 320px; }
}

@media (max-width: 640px) {
    :root { --topo-altura: 66px; }
    .container { padding: 0 16px; }
    .secao { padding: 64px 0; }
    .faixa { padding: 60px 0; }
    .cards, .numeros { grid-template-columns: 1fr; }
    .trilho__lista { padding-left: 16px; padding-right: 16px; scroll-padding: 0 16px; -webkit-mask-image: none; mask-image: none; }
    .trilho__seta { display: none; }
    .seg { flex-basis: 200px; }
    .rodape__linha { grid-template-columns: 1fr; }
    .hero { min-height: 480px; }
    .slide__arcos { width: 110vw; right: -30%; opacity: .5; }
    .slide--ambar .slide__arcos { opacity: .25; }
    .form { padding: 22px; }
    .whats span { display: none; }
    .whats { padding: 14px; }
}

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