/* ========================================
   VITRUM-PETRA — Landing Page Institucional
   Paleta: Navy #1A1A2E | Dourado #B8860B | Marfim #FAF8F5
   Fonte: Montserrat
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --azul: #1A1A2E;
    --azul-light: #16213E;
    --azul-mid: #0F3460;
    --dourado: #B8860B;
    --dourado-light: #D4A842;
    --dourado-dark: #8B6508;
    --branco: #FFFFFF;
    --marfim: #FAF8F5;
    --cinza-50: #F8F9FA;
    --cinza-100: #F1F3F5;
    --cinza-200: #E9ECEF;
    --cinza-300: #DEE2E6;
    --cinza-400: #ADB5BD;
    --cinza-500: #6C757D;
    --cinza-600: #495057;
    --cinza-700: #343A40;
    --texto: #2D2D2D;
    --sombra: 0 4px 30px rgba(0, 0, 0, 0.08);
    --sombra-hover: 0 8px 40px rgba(0, 0, 0, 0.14);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Montserrat', sans-serif;
    color: var(--texto);
    background: var(--marfim);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* Foco visível para navegação por teclado */
:focus-visible {
    outline: 3px solid var(--dourado);
    outline-offset: 3px;
    border-radius: 4px;
}

/* --- Botões --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.3px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn--primary {
    background: var(--dourado);
    color: var(--branco);
    border-color: var(--dourado);
}

.btn--primary:hover {
    background: var(--dourado-dark);
    border-color: var(--dourado-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(184, 134, 11, 0.35);
}

.btn--outline {
    background: transparent;
    color: var(--branco);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn--outline:hover {
    background: var(--branco);
    color: var(--azul);
    border-color: var(--branco);
    transform: translateY(-2px);
}

.hero .btn--outline {
    color: var(--azul);
    border-color: var(--azul);
}

.hero .btn--outline:hover {
    background: var(--azul);
    color: var(--branco);
    border-color: var(--azul);
}

.btn--full { width: 100%; justify-content: center; }

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 6px 0;
    background: var(--azul);
    transition: var(--transition);
}

.header--scrolled {
    background: rgba(26, 26, 46, 0.97);
    backdrop-filter: blur(12px);
    padding: 6px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

/* Logo invisível no topo, visível ao rolar — escopo restrito ao header */
.header .logo {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.header--scrolled .logo {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
}

.logo__composition {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo__emblema {
    height: 54px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.logo__texto {
    height: 72px;
    width: auto;
    display: block;
    transition: var(--transition);
}

.logo--footer .logo__emblema { height: 64px; }
.logo--footer .logo__texto { height: 84px; }

/* --- Nav --- */
.nav__list {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav__link {
    color: var(--branco);
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 50px;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

.nav__link:hover,
.nav__link.active {
    color: var(--branco);
    background: var(--dourado);
}

.nav__link--cta {
    background: var(--dourado) !important;
    color: var(--branco) !important;
    margin-left: 8px;
}

.nav__link--cta:hover {
    background: var(--dourado-dark) !important;
    transform: translateY(-1px);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--branco);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Hero --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    background: linear-gradient(135deg, var(--marfim) 0%, var(--branco) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(184, 134, 11, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(184, 134, 11, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 0h60v60H0z' fill='none'/%3E%3Cpath d='M30 0v60M0 30h60' stroke='rgba(26,26,46,0.04)' stroke-width='1'/%3E%3C/svg%3E");
}

.hero__grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 48px;
    align-items: center;
    padding: 96px 0 60px;
}

.hero__content {
    max-width: 720px;
    align-self: start;
}

.hero__tag {
    display: inline-block;
    color: var(--dourado);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 14px;
    padding: 8px 20px;
    border: 1px solid var(--dourado);
    border-radius: 50px;
    background: var(--azul);
}

.hero__title {
    color: var(--azul);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.hero__highlight {
    color: var(--dourado-dark);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 600;
    font-style: italic;
    letter-spacing: 0.3px;
    margin-bottom: 16px;
}

.hero__subtitle {
    color: rgba(26, 26, 46, 0.65);
    font-size: 1.1rem;
    line-height: 1.65;
    margin-bottom: 28px;
    max-width: 560px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero__image {
    display: flex;
    align-items: center;
    align-self: center;
    justify-content: center;
}

.hero__img {
    width: 100%;
    max-width: 360px;
    height: auto;
    object-fit: contain;
    display: block;
    border-radius: var(--radius);
}

/* --- Section Headers --- */
.section-header { margin-bottom: 56px; }
.section-header--center { text-align: center; }

.section-header__tag {
    display: inline-block;
    color: var(--dourado-dark);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-header__title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 800;
    color: var(--azul);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header__subtitle {
    color: var(--cinza-600);
    font-size: 1.05rem;
    max-width: 540px;
    line-height: 1.7;
}

.section-header--center .section-header__subtitle { margin: 0 auto; }

.destaque-dourado {
    color: var(--dourado-dark);
    font-weight: 700;
}

/* --- Serviços --- */
.servicos {
    padding: 64px 0 100px;
    background: var(--branco);
}

.servicos__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.servico-card {
    position: relative;
    background: linear-gradient(150deg, var(--azul) 0%, var(--azul-light) 100%);
    border-radius: var(--radius);
    padding: 36px 28px 32px;
    color: var(--branco);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.servico-card::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(184, 134, 11, 0.1), transparent 70%);
    border-radius: 50%;
    transition: var(--transition);
}

.servico-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(26, 26, 46, 0.35);
    border-color: rgba(184, 134, 11, 0.3);
}

.servico-card:hover::before {
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(184, 134, 11, 0.18), transparent 70%);
}

.servico-card:hover .servico-card__number { color: #B8860B; }

.servico-card__icon {
    width: 52px;
    height: 52px;
    background: rgba(184, 134, 11, 0.12);
    border: 1px solid rgba(184, 134, 11, 0.25);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.servico-card__icon svg {
    width: 26px;
    height: 26px;
    color: var(--dourado);
}

.servico-card__number {
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 2.8rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.04);
    line-height: 1;
    pointer-events: none;
    transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.servico-card h3 {
    font-size: 1.02rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.35;
    color: var(--branco);
}

.servico-card p {
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.65;
}

/* --- Contato --- */
.contato {
    padding: 64px 0 100px;
    background: var(--branco);
}

.contato__header {
    margin-bottom: 56px;
    text-align: center;
}

.contato__subtitle {
    color: var(--cinza-600);
    font-size: 0.95rem;
    margin-top: 12px;
}

.contato__canais {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 640px;
    margin: 0 auto;
}

.contato__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 12px;
    background: var(--branco);
    border: 1px solid var(--cinza-200);
    border-radius: var(--radius);
    padding: 40px 28px;
    transition: var(--transition);
}

.contato__item:hover {
    border-color: var(--dourado);
    box-shadow: var(--sombra-hover);
    transform: translateY(-4px);
}

.contato__item svg {
    width: 32px;
    height: 32px;
    color: var(--dourado);
    flex-shrink: 0;
}

.contato__item strong {
    display: block;
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--azul);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.contato__item p {
    font-size: 0.92rem;
    color: var(--cinza-600);
    line-height: 1.6;
    margin: 0;
}

.contato__link {
    color: var(--dourado-dark);
    font-weight: 600;
    transition: var(--transition);
}

.contato__link:hover {
    color: var(--dourado);
}

/* --- Rodapé --- */
.footer {
    background: var(--azul);
    color: rgba(255, 255, 255, 0.7);
    padding: 64px 0 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}

.footer__brand p {
    font-size: 0.88rem;
    margin-top: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.5);
}

.footer__tagline {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 2.5px;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    margin-top: 20px;
}

.footer__tagline .destaque-dourado {
    color: var(--dourado);
}

.footer__links h4 {
    color: var(--branco);
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.footer__links li { margin-bottom: 10px; }

.footer__links a {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    transition: var(--transition);
}

.footer__links a:hover {
    color: var(--dourado);
    padding-left: 4px;
}

.footer__links li:not(:has(a)) {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 24px 0;
    text-align: center;
}

.footer__bottom p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

/* --- Artigos --- */
.artigos {
    padding: 64px 0 100px;
    background: var(--marfim);
}

.artigos__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.blog-card {
    background: var(--branco);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--sombra);
    transition: var(--transition);
    border: 1px solid var(--cinza-200);
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sombra-hover);
}

.blog-card__image {
    height: 200px;
    background: linear-gradient(135deg, var(--azul), var(--azul-mid));
    overflow: hidden;
}

.blog-card__cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.blog-card__body {
    padding: 24px;
}

.blog-card__date {
    display: block;
    font-size: 0.75rem;
    color: var(--dourado);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.blog-card__body h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--azul);
    margin-bottom: 12px;
    line-height: 1.4;
}

.blog-card__body p {
    font-size: 0.88rem;
    color: var(--cinza-600);
    line-height: 1.6;
    margin-bottom: 16px;
}

.blog-card__link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dourado);
    transition: var(--transition);
}

.blog-card__link:hover {
    color: var(--dourado-dark);
    letter-spacing: 0.5px;
}

/* --- Páginas de Artigos --- */
.article {
    padding: 120px 0 60px;
    background: var(--branco);
}

.article__back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--dourado);
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 32px;
    transition: var(--transition);
}

.article__back:hover {
    color: var(--dourado-dark);
    transform: translateX(-4px);
}

.article__hero {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 40px;
    max-height: 480px;
}

.article__cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.article__header {
    max-width: 780px;
    margin-bottom: 40px;
}

.article__meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 0.82rem;
    color: var(--cinza-400);
    font-weight: 500;
    flex-wrap: wrap;
}

.article__category {
    background: var(--dourado);
    color: var(--branco);
    padding: 3px 12px;
    border-radius: 50px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.article__title {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 800;
    color: var(--azul);
    line-height: 1.25;
}

.article__body {
    max-width: 780px;
    font-size: 1rem;
    line-height: 1.9;
    color: var(--cinza-600);
}

.article__body h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--azul);
    margin: 40px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--dourado);
    display: inline-block;
}

.article__body p {
    margin-bottom: 20px;
}

.article__body ul {
    margin: 16px 0 24px;
    padding-left: 0;
    list-style: none;
}

.article__body ul li {
    position: relative;
    padding: 10px 0 10px 20px;
    border-bottom: 1px solid var(--cinza-100);
    font-size: 0.95rem;
    line-height: 1.7;
}

.article__body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20px;
    width: 8px;
    height: 8px;
    background: var(--dourado);
    border-radius: 50%;
}

.article__body ul li:last-child {
    border-bottom: none;
}

.article__conclusion {
    background: var(--cinza-50);
    border-left: 4px solid var(--dourado);
    padding: 32px;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 40px 0;
}

.article__conclusion p {
    margin-bottom: 24px;
    font-size: 1rem;
    color: var(--cinza-700);
}

.article__sources {
    font-size: 0.78rem;
    color: var(--cinza-400);
    font-style: italic;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--cinza-200);
}

.article__note {
    font-size: 0.82rem;
    color: var(--cinza-500);
    border-left: 3px solid var(--cinza-300);
    padding-left: 16px;
    margin-top: 32px;
}

.article__note a {
    color: var(--dourado-dark);
    font-weight: 600;
}

.article__note a:hover {
    color: var(--dourado);
}

/* --- Animações de entrada --- */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsivo --- */
@media (max-width: 1024px) {
    .footer__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html { scroll-padding-top: 80px; }

    .header {
        padding: 6px 0;
        background: rgba(26, 26, 46, 0.97);
        backdrop-filter: blur(12px);
        box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
    }

    .header .logo__emblema { height: 42px; }
    .header .logo__texto   { height: 56px; }

    .hamburger { display: flex; }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--azul);
        padding: 80px 32px 32px;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -4px 0 30px rgba(0, 0, 0, 0.3);
        z-index: 1000;
    }

    .nav.open { right: 0; }

    .nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .nav__link {
        display: block;
        padding: 14px 16px;
        font-size: 0.95rem;
        border-radius: var(--radius-sm);
        color: var(--branco);
    }

    .nav__link--cta {
        text-align: center;
        margin-left: 0;
        margin-top: 12px;
    }

    .hero__grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: calc(130px + env(safe-area-inset-top)) 0 60px;
    }

    .hero__img {
        max-width: 180px;
    }

    .hero__actions { flex-direction: column; }
    .hero__actions .btn { justify-content: center; }

    .servicos__grid { grid-template-columns: 1fr; }
    .artigos__grid { grid-template-columns: 1fr; }

    .contato__canais { grid-template-columns: 1fr; }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero__title { font-size: 1.8rem; }
    .section-header__title { font-size: 1.5rem; }

    .hero__grid {
        padding-top: calc(90px + env(safe-area-inset-top, 0px));
        padding-bottom: 48px;
        padding-left: 16px;
        padding-right: 16px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
    .reveal { opacity: 1 !important; transform: none !important; }
}