/* 
   OathIA - Estilo Corporativo "Big Tech" (Referência IBM)
   Foco em design plano, bordas retas, sem sombras, altíssima seriedade.
*/

:root {
    /* Cores Corporativas */
    --color-primary: #0f62fe; /* Azul destaque */
    --color-primary-hover: #0353e9;
    --color-secondary: #0a1930; /* Azul escuro corporativo para títulos */
    
    --color-bg-white: #ffffff;
    --color-bg-light: #f4f4f4; /* Fundo cinza claro clássico */
    --color-bg-dark: #0a1930; /* Fundo escuro azulado para o rodapé */
    
    --color-border: #e0e0e0; /* Borda fina cinza */
    
    --color-text-main: #0b1f40; /* Azul escuro (quase preto) para os textos da página */
    --color-text-muted: #3a4b66; /* Azul acinzentado para textos de apoio */
    --color-text-light: #ffffff;
    
    /* Tipografia */
    --font-main: 'Inter', sans-serif;
    
    /* Espaçamento e Estrutura */
    --container-width: 1200px; /* Um pouco mais largo */
}

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

body {
    font-family: var(--font-main);
    color: var(--color-text-main);
    background-color: var(--color-bg-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s ease;
}

ul {
    list-style: none;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 5%;
}

/* Typography */
h1, h2, h3 {
    font-weight: 400; /* Reduzindo o peso para ficar mais sofisticado/sério */
    line-height: 1.2;
    color: var(--color-text-main);
}

h1 {
    font-size: 3rem;
    font-weight: 300; /* Estilo IBM Hero */
    letter-spacing: -1px;
    margin-bottom: 24px;
}

h2 {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 16px;
}

p {
    color: var(--color-text-muted);
    font-size: 1rem;
}

/* Botões */
.btn-primary, .btn-secondary, .btn-primary-small {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 400;
    border-radius: 0; /* SEM BORDAS ARREDONDADAS */
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    color: var(--color-text-light);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-primary-small {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 10px 20px;
    font-size: 0.875rem;
}

.btn-primary-small:hover {
    background-color: var(--color-primary-hover);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Navbar */
.navbar {
    background-color: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    height: 64px; /* Navbar mais baixa, corporativa */
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

/* Logo em Texto */
.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #000000; /* Todo em preto como solicitado */
    letter-spacing: 1px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a:not(.btn-primary-small) {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-text-main);
}

.nav-links a:not(.btn-primary-small):hover {
    color: var(--color-primary);
}

/* Hero Section */
.hero {
    padding: 160px 0 100px;
    background-color: var(--color-bg-white);
}

.hero-content {
    max-width: 900px;
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: 40px;
    max-width: 700px;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

/* Soluções Section - O Estilo IBM */
.solutions-section {
    padding: 80px 0 120px;
    background-color: var(--color-bg-light); /* Fundo cinza claro ajuda a destacar os cards brancos */
}

.section-header {
    margin-bottom: 40px;
}

.section-header p {
    max-width: 600px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 16px; /* Espaçamento menor, grade rígida */
}

/* Estilo do Card idêntico à Referência 2 */
.card {
    background-color: var(--color-bg-white);
    padding: 24px;
    border-radius: 0; /* Reto */
    box-shadow: none; /* Sem sombra! */
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    min-height: 280px; /* Formato retangular alto */
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    border-color: var(--color-primary);
    /* IBM as vezes usa uma sombra MUITO sutil apenas no hover, ou apenas borda azul. Vamos de borda e sombra sutil */
    box-shadow: 0 4px 16px rgba(0,0,0,0.05);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 400; /* Título leve */
    color: var(--color-text-main);
    margin-bottom: 12px;
}

.card-desc {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* Parte de baixo do card (Icone esquerda, Seta direita) */
.card-bottom {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.card-icon svg {
    stroke-width: 1; /* Linha extremamente fina */
    stroke: var(--color-text-main);
}

.card-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.card-arrow svg {
    stroke: var(--color-primary);
    stroke-width: 1.5;
}

.card:hover .card-arrow {
    transform: translateX(4px); /* Seta move para direita no hover */
}

/* News Section (Últimas Atualizações) */
.news-section {
    padding: 100px 0;
    background-color: var(--color-bg-white);
}

.news-container {
    display: grid;
    grid-template-columns: 1fr 360px; /* Layout assimétrico: Imagem na esquerda, lista na direita */
    gap: 80px;
    align-items: flex-start;
}

.news-image {
    width: 100%;
    height: 100%;
    min-height: 500px;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border: 1px solid var(--color-border);
}

.news-header {
    font-size: 1.125rem;
    font-weight: 600;
    color: #000000;
    margin-bottom: 40px;
}

.news-item {
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.news-item a {
    display: block;
    text-decoration: none;
}

.news-item h3 {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-primary);
    line-height: 1.5;
    margin-bottom: 16px;
    transition: color 0.2s ease;
}

.news-item a:hover h3 {
    color: var(--color-primary-hover);
}

.news-arrow {
    stroke: var(--color-primary);
    stroke-width: 1.5;
    transition: transform 0.2s ease;
}

.news-item a:hover .news-arrow {
    transform: translateX(4px);
}

.news-pagination {
    display: flex;
    gap: 24px;
    align-items: center;
    margin-top: 8px;
}

.news-pagination span {
    font-size: 1rem;
    color: var(--color-text-main);
    cursor: pointer;
    padding-bottom: 4px;
}

.news-pagination .page-active {
    font-weight: 600;
    color: var(--color-primary);
    border-bottom: 3px solid var(--color-primary);
}

/* About Section */
.about-section {
    padding: 100px 0;
    background-color: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
}

.about-content {
    max-width: 800px;
}

.about-text p {
    margin-bottom: 24px;
}

.slogan-block {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-main);
    border-left: 2px solid var(--color-primary); /* Borda fina */
    padding-left: 24px;
    margin-top: 40px;
}

/* Footer / Contato */
.footer {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    padding: 80px 0 40px;
}

.footer h2 {
    color: var(--color-text-light);
}

.footer p {
    color: #a8a8a8;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    margin-bottom: 80px;
}

.footer-cta h2 {
    margin-bottom: 16px;
}

.form-corporate {
    background-color: #262626; /* Fundo limpo no dark mode */
    padding: 32px;
    border: 1px solid #393939; /* Borda reta */
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 400;
    color: #f4f4f4;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    background-color: transparent;
    border: 1px solid #525252;
    color: var(--color-text-light);
    border-radius: 0; /* Sem borda arredondada no input também */
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #393939;
    padding-top: 32px;
}

.logo-footer {
    color: var(--color-text-light);
}

/* Responsivo */
@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .nav-links {
        display: none;
    }
}