/* =========================================================
   NeuralGate — tema LOUSA (quadro-negro + giz branco)
   Sem framework. Mobile-first.
   Tipografia: TrashHand (títulos grandes) + Manrope (corpo/legível), ambas auto-hospedadas
   ========================================================= */

@font-face {
    font-family: "TrashHand";
    src: url("/static/fonts/TrashHand.TTF?v=2-tilde") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: "Manrope";
    src: url("/static/fonts/Manrope-Variable.ttf") format("truetype");
    font-weight: 200 800;   /* fonte variável cobre todos os pesos */
    font-style: normal;
    font-display: swap;
}

:root {
    /* Lousa */
    --c-board:     #0a0a0a;   /* preto do quadro */
    --c-board-2:   #121212;   /* leve variação */
    --c-chalk:     #f4f2ea;   /* giz branco (levemente quente) */
    --c-chalk-dim: #c7c4b8;   /* giz apagado / texto secundário */
    --c-chalk-faint:#8f8d84;
    --c-line:      rgba(244,242,234,.16);
    --c-red:       #ff5a4d;   /* giz vermelho — alertas/fraude */
    --c-yellow:    #CE1141;   /* destaque — vermelho "Chicago Bulls" */

    --font-marker: "TrashHand", "Permanent Marker", cursive;   /* títulos */
    --font-rough:  "TrashHand", "Permanent Marker", cursive;   /* rótulos rabiscados */
    --font-hand:   "Manrope", system-ui, -apple-system, sans-serif;  /* corpo legível */

    --radius: 4px;
    --maxw: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: var(--font-hand);
    font-weight: 300;
    color: var(--c-chalk);
    background-color: var(--c-board);
    line-height: 1.7;
    letter-spacing: .01em;
    -webkit-font-smoothing: antialiased;
    position: relative;
    overflow-x: hidden;
}

/* Textura de giz: leve poeira + vinheta, dá o ar de lousa sem exagero */
.chalk-dust {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image:
        radial-gradient(circle at 18% 22%, rgba(244,242,234,.05), transparent 42%),
        radial-gradient(circle at 82% 12%, rgba(244,242,234,.045), transparent 40%),
        radial-gradient(circle at 65% 85%, rgba(244,242,234,.04), transparent 45%),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
    /* vinheta escura nas bordas */
    box-shadow: inset 0 0 240px 60px rgba(0,0,0,.9);
    mix-blend-mode: screen;
}
body > *:not(.chalk-dust) { position: relative; z-index: 1; }

h1, h2, h3 { font-family: var(--font-marker); font-weight: 400; line-height: 1.45; margin: 0 0 .5em; letter-spacing: .11em; }

a { color: inherit; text-decoration: none; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.skip-link { position: absolute; left: -999px; top: 0; z-index: 100; background: var(--c-chalk); color: var(--c-board); padding: .6rem 1rem; }
.skip-link:focus { left: 0; }

/* ---------- Eyebrow (giz rabiscado) ---------- */
.eyebrow {
    display: inline-block; font-family: var(--font-rough); font-size: clamp(1.5rem, 3.4vw, 2.1rem);
    line-height: 1.3; letter-spacing: .05em; color: var(--c-yellow); margin-bottom: 1.1rem; opacity: 1;
}

/* ---------- Palavra destacada + sublinhado de giz ---------- */
.mark-word { position: relative; white-space: nowrap; color: var(--c-chalk); }
.scribble { position: absolute; left: -2%; bottom: -.35em; width: 104%; height: .5em; color: var(--c-yellow); overflow: visible; }

/* ---------- Botões (giz) ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
    font-family: var(--font-hand); font-weight: 700; font-size: 1.1rem; letter-spacing: .01em; cursor: pointer;
    padding: .7rem 1.4rem; transition: transform .12s ease, background .15s ease, color .15s ease;
}
.btn:active { transform: translateY(1px) rotate(-.3deg); }
/* moldura de giz desenhada à mão (borda irregular via SVG) */
.btn--chalk {
    color: var(--c-chalk); background: transparent;
    border: 0; position: relative; padding: .75rem 1.6rem;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 60' preserveAspectRatio='none'%3E%3Crect x='3' y='3' width='194' height='54' rx='6' fill='none' stroke='%23f4f2ea' stroke-width='2.2' stroke-linejoin='round' stroke-dasharray='2 0'/%3E%3C/svg%3E");
    background-size: 100% 100%; background-repeat: no-repeat;
}
.btn--chalk:hover { color: var(--c-board); background-color: var(--c-chalk); }
.btn--lg { font-size: 1.4rem; padding: .95rem 2rem; }
.btn--link { font-family: var(--font-hand); font-weight: 700; color: var(--c-chalk-dim); border-bottom: 2px dashed var(--c-line); padding: .4rem .2rem; }
.btn--link:hover { color: var(--c-chalk); border-color: var(--c-chalk); }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(10,10,10,.82); backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--c-line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: inline-flex; align-items: center; }
.brand__logo { display: block; height: 30px; width: auto; }
.brand--sm .brand__logo { height: 24px; }
.nav { display: flex; align-items: center; gap: 1.6rem; }
.nav a { font-family: var(--font-hand); font-weight: 400; color: var(--c-chalk-dim); }
.nav a:hover { color: var(--c-chalk); }
.nav .btn--chalk { padding: .5rem 1.1rem; font-size: .92rem; }

/* ---------- Hero ---------- */
.hero { padding: clamp(2.5rem, 7vw, 5.5rem) 0 clamp(2rem, 5vw, 3.5rem); }
.hero__inner { display: grid; grid-template-columns: 1.1fr .9fr; gap: 3rem; align-items: center; }
.hero__title { font-size: clamp(2.9rem, 6.8vw, 5rem); line-height: 1.5; }
.hero__title .mark-word { color: var(--c-yellow); }
.hero__aside { max-width: 46ch; }
.hero__lead { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-dim); font-size: 1.2rem; margin: 0; }
.hero__cta { display: flex; flex-wrap: wrap; align-items: center; gap: 1.2rem; margin: 1.8rem 0 1rem; }
.hero__note { font-family: var(--font-hand); font-weight: 400; font-size: 1.02rem; color: var(--c-chalk-dim); letter-spacing: .01em; }

/* ---------- Sections ---------- */
.section { padding: clamp(3rem, 7vw, 5rem) 0; }
.section--alt { border-block: 1px solid var(--c-line); background: linear-gradient(180deg, transparent, rgba(255,255,255,.015)); }
.section__head { max-width: 660px; margin-bottom: 2.6rem; }
.section__head h2 { font-size: clamp(2.1rem, 4.6vw, 3.2rem); }
.section__head h2 .mark-word { color: var(--c-yellow); }
.section__head p { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-dim); font-size: 1.12rem; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
.step { padding: 1.6rem 1.4rem; border: 1px solid var(--c-line); border-radius: var(--radius); position: relative; text-align: center; }
.step:nth-child(2) { transform: rotate(-.4deg); }
.step:nth-child(3) { transform: rotate(.3deg); }
.step__num {
    display: block; width: fit-content; margin: 0 auto 1rem; padding: 0 .18em .05em;
    font-family: var(--font-marker); font-size: 3.4rem; line-height: 1; letter-spacing: .06em;
    text-align: center; color: var(--c-yellow); border-bottom: 5px solid var(--c-yellow);
}
.step h3 { font-family: var(--font-hand); font-weight: 700; letter-spacing: .01em; font-size: 1.4rem; }
.step p { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-dim); margin: 0; }

/* Features / benefícios */
.features { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; }
.feature { padding: 1.4rem; border: 1px dashed var(--c-line); border-radius: var(--radius); text-align: center; transition: border-color .18s ease, transform .18s ease; }
.feature:hover { border-color: var(--c-chalk-dim); transform: translateY(-3px); }
.feature__icon {
    display: block; width: 64px; height: 64px; margin: 0 auto 1rem;
    object-fit: contain;
}
.feature h3 { font-family: var(--font-hand); font-weight: 700; letter-spacing: .01em; font-size: 1.3rem; }
.feature p { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-dim); margin: 0; font-size: 1rem; }

/* Diferenciais */
.diffs { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.diff { padding: 2rem; border: 1px solid var(--c-line); border-radius: var(--radius); }
.diff__kicker {
    display: inline-block; font-family: var(--font-hand); font-weight: 700;
    font-size: .78rem; letter-spacing: .16em; text-transform: uppercase;
    color: var(--c-yellow); margin-bottom: .9rem;
}
.diff h3 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
.diff p { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-dim); font-size: 1.08rem; line-height: 1.75; margin: 0; }

/* CTA / contato */
.cta { text-align: center; }
.cta__inner { max-width: 640px; margin: 0 auto; padding: clamp(2rem, 5vw, 3rem); border: 2px solid var(--c-line); border-radius: 8px; }
.cta h2 { font-size: clamp(2.1rem, 4.6vw, 3.2rem); }
.cta p { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-dim); font-size: 1.15rem; }
.cta .btn { margin-top: 1rem; }
.cta__hint { font-family: var(--font-rough); font-size: .72rem; color: var(--c-chalk-faint); margin-top: 1.2rem; }

/* Nota de rodapé (asterisco) */
.fn { color: var(--c-yellow); font-weight: 700; }
.footnote {
    font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-faint);
    font-size: .9rem; text-align: center; margin: 0 0 2rem;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--c-line); padding: 2.2rem 0; margin-top: 2rem; }
.site-footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.site-footer__legal { font-family: var(--font-hand); font-weight: 300; color: var(--c-chalk-faint); font-size: .9rem; text-align: right; margin: 0; }

/* ---------- Responsivo ---------- */
@media (max-width: 900px) {
    .hero__inner { grid-template-columns: 1fr; }
    .hero__aside { max-width: none; }
    .steps { grid-template-columns: 1fr; }
    .features { grid-template-columns: repeat(2, 1fr); }
    .diffs { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
    .nav a:not(.btn) { display: none; }
    .features { grid-template-columns: 1fr; }
    .site-footer__inner { flex-direction: column; text-align: center; }
    .site-footer__legal { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation: none !important; transition: none !important; }
}