/* =========================================================
   RSFB Informática - Site Premium
   Código organizado, responsivo e comentado para manutenção.
   ========================================================= */

:root {
    --color-black: #050505;
    --color-dark: #0b0b0d;
    --color-card: rgba(255, 255, 255, 0.06);
    --color-card-border: rgba(255, 204, 51, 0.25);
    --color-gold: #f5c542;
    --color-gold-strong: #ffd24a;
    --color-text: #f5f5f5;
    --color-muted: #c7c7c7;
    --container-width: 1180px;
    --radius-large: 28px;
    --radius-medium: 18px;
    --shadow-gold: 0 0 35px rgba(245, 197, 66, 0.22);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    background: var(--color-black);
    color: var(--color-text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

img {
    display: block;
    max-width: 100%;
}

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

.container {
    width: min(100% - 32px, var(--container-width));
    margin-inline: auto;
}

/* Cabeçalho */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(0, 0, 0, 0.82);
    border-bottom: 1px solid rgba(245, 197, 66, 0.18);
    backdrop-filter: blur(16px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 78px;
    gap: 24px;
}

.brand img {
    width: 168px;
    height: auto;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 0.95rem;
    color: var(--color-muted);
}

.main-nav a:hover {
    color: var(--color-gold);
}

.nav-whatsapp {
    padding: 12px 18px;
    border: 1px solid rgba(245, 197, 66, 0.75);
    border-radius: 8px;
    color: var(--color-gold) !important;
    font-weight: 800;
}

.hero-content h1 strong {
    color: var(--color-gold);
    font-weight: 900;
}

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(245, 197, 66, 0.3);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.05);
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px auto;
    background: var(--color-gold);
}

/* Hero principal */
.hero {
    position: relative;
    display: grid;
    min-height: 760px;
    place-items: center;
    overflow: hidden;
    background: url("assets/hero-rsfb-premium.png") center / cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.96), rgba(0, 0, 0, 0.68), rgba(0, 0, 0, 0.28));
}

.hero-content {
    position: relative;
    z-index: 1;
    padding-block: 120px;
}

.hero-content h1,
.service-hero h1 {
    max-width: 780px;
    margin-top: 16px;
    font-size: clamp(2.4rem, 6vw, 5.5rem);
    line-height: 0.98;
    letter-spacing: -0.05em;
}

.hero-content p,
.service-hero p {
    max-width: 620px;
    margin-top: 24px;
    color: var(--color-muted);
    font-size: clamp(1rem, 2vw, 1.25rem);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 36px;
}

.tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--color-gold);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.tag::before {
    content: "";
    width: 34px;
    height: 1px;
    background: var(--color-gold);
}

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 13px 22px;
    border-radius: 8px;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold), #b8860b);
    color: #111;
    box-shadow: var(--shadow-gold);
}

.btn-outline {
    border: 1px solid rgba(245, 197, 66, 0.45);
    color: var(--color-text);
}

.btn-outline:hover {
    border-color: var(--color-gold);
}

.text-link {
    display: inline-block;
    margin-top: 18px;
    color: var(--color-gold);
    font-weight: 700;
}

/* Seções */
.section {
    padding-block: 92px;
}

.section-header {
    max-width: 760px;
    margin-bottom: 38px;
    text-align: center;
    margin-inline: auto;
}

.section-header h2,
.split-layout h2,
.contact-box h2,
.detail-card h2 {
    margin-top: 14px;
    font-size: clamp(2rem, 4vw, 3.4rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.section-header p,
.contact-box p,
.detail-card p,
.split-layout p {
    margin-top: 16px;
    color: var(--color-muted);
}

/* Cards de destaque */
.highlights {
    background: linear-gradient(180deg, #060606, #0d0d10);
}

.feature-grid,
.services-grid,
.detail-grid {
    display: grid;
    gap: 22px;
}

.feature-grid {
    grid-template-columns: repeat(3, 1fr);
}

.feature-card,
.service-card,
.detail-card,
.contact-box {
    border: 1px solid var(--color-card-border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025));
    border-radius: var(--radius-large);
    box-shadow: 0 24px 70px rgba(0, 0, 0, 0.28);
}

.feature-card,
.service-card,
.detail-card {
    padding: 28px;
}

.feature-card h2,
.service-card h3 {
    color: var(--color-text);
    font-size: 1.35rem;
}

.feature-card p,
.service-card p {
    margin-top: 12px;
    color: var(--color-muted);
}

/* Serviços com ícones no estilo da referência */
.services-section {
    background:
        radial-gradient(circle at top right, rgba(245, 197, 66, 0.13), transparent 34%),
        var(--color-black);
}

.services-grid {
    grid-template-columns: repeat(3, 1fr);
}

.service-card {
    min-height: 230px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: rgba(245, 197, 66, 0.7);
}

/* Sobre */
.about-section {
    background: #09090b;
}

.split-layout {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 54px;
    align-items: start;
}

/* Contato */
.contact-section {
    background:
        linear-gradient(135deg, rgba(245, 197, 66, 0.1), transparent),
        #050505;
}

.contact-box {
    padding: 54px;
    text-align: center;
}

.contact-box .btn {
    margin-top: 28px;
}

/* Páginas de serviço */
.service-hero {
    display: grid;
    min-height: 560px;
    place-items: center;
    background:
        linear-gradient(90deg, rgba(0, 0, 0, 0.96), rgba(0, 0, 0, 0.72)),
        url("assets/hero-rsfb-premium.png") center / cover no-repeat;
}

.service-hero-content {
    padding-block: 110px;
}

.service-detail {
    background: #08080a;
}

.detail-grid {
    grid-template-columns: 1.4fr 0.8fr;
}

.side-detail ul {
    margin-top: 18px;
    padding-left: 20px;
    color: var(--color-muted);
}

.side-detail li + li {
    margin-top: 12px;
}

.compact-contact {
    padding-top: 40px;
}

/* Botão flutuante do WhatsApp */
.whatsapp-float {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 80;
    display: grid;
    width: 64px;
    height: 64px;
    place-items: center;
    border-radius: 50%;
    background: #25d366;
    box-shadow: 0 16px 40px rgba(37, 211, 102, 0.35);
    transition: transform 0.2s ease;
}

.whatsapp-float:hover {
    transform: translateY(-4px) scale(1.03);
}

.whatsapp-float svg {
    width: 36px;
    height: 36px;
    fill: #ffffff;
}

/* Rodapé */
.site-footer {
    border-top: 1px solid rgba(245, 197, 66, 0.18);
    background: #030303;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding-block: 26px;
    color: var(--color-muted);
    font-size: 0.95rem;
}

.footer-content a {
    color: var(--color-gold);
    font-weight: 700;
}

/* Responsividade */
@media (max-width: 980px) {
    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: absolute;
        top: 78px;
        left: 16px;
        right: 16px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 16px;
        border: 1px solid rgba(245, 197, 66, 0.25);
        border-radius: 18px;
        background: rgba(0, 0, 0, 0.95);
    }

    .main-nav.is-open {
        display: flex;
    }

    .main-nav a {
        padding: 14px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .main-nav a:last-child {
        border-bottom: 0;
    }

    .hero {
        min-height: 680px;
        background-position: center left;
    }

    .hero-overlay {
        background: rgba(0, 0, 0, 0.78);
    }

    .feature-grid,
    .services-grid,
    .split-layout,
    .detail-grid {
        grid-template-columns: 1fr;
    }

    .section {
        padding-block: 70px;
    }
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 24px, var(--container-width));
    }

    .brand img {
        width: 132px;
    }

    .header-content {
        min-height: 68px;
    }

    .main-nav {
        top: 68px;
    }

    .hero,
    .service-hero {
        min-height: 620px;
    }

    .hero-content,
    .service-hero-content {
        padding-block: 84px;
    }

    .hero-actions,
    .btn {
        width: 100%;
    }

    .btn {
        text-align: center;
    }

    .feature-card,
    .service-card,
    .detail-card,
    .contact-box {
        padding: 24px;
        border-radius: var(--radius-medium);
    }

    .contact-box {
        text-align: left;
    }

    .whatsapp-float {
        width: 58px;
        height: 58px;
        right: 16px;
        bottom: 16px;
    }

    .whatsapp-float svg {
        width: 32px;
        height: 32px;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
    }
}


/* Ícones dos serviços */
.service-card {
    display: flex;
    min-height: 260px;
    flex-direction: column;
    align-items: center;
    text-align: center;
}
.service-icon {
    display: grid;
    width: 76px;
    height: 76px;
    margin-bottom: 20px;
    place-items: center;
    color: var(--color-gold);
}
.service-icon svg {
    width: 76px;
    height: 76px;
    fill: none;
    stroke: currentColor;
    stroke-width: 3.2;
    stroke-linecap: round;
    stroke-linejoin: round;
    filter: drop-shadow(0 0 14px rgba(245, 197, 66, 0.26));
}

/* Faixa de segmentos */
.segment-section {
    background: linear-gradient(180deg, #050505, #09090b);
}

@media (min-width: 1180px) {
    .services-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 1179px) and (min-width: 760px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}