:root {
    --primaria: #0f172a;
    --detalhe: #991b1b;
    --fundo: #f8fafc;
    --texto: #334155;
    --branco: #ffffff;
    --muted: #64748b;
    --border: #e2e8f0;
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--fundo);
    color: var(--texto);
    line-height: 1.8;
}

h1, h2, h3 {
    font-family: 'Playfair Display', serif;
    color: var(--primaria);
    line-height: 1.2;
}

p { margin-bottom: 1rem; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--primaria);
    color: var(--branco);
    padding: 12px;
    z-index: 2000;
}

.skip-link:focus { left: 12px; top: 12px; }

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

.nav-wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.logo { font-size: 1.1rem; font-weight: 700; color: var(--primaria); text-transform: uppercase; letter-spacing: 1.2px; }

.nav-toggle {
    display: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    background: var(--branco);
    color: var(--primaria);
    font-weight: 600;
    cursor: pointer;
}

.nav-menu { display: flex; list-style: none; gap: 24px; align-items: center; }

nav a {
    text-decoration: none;
    color: var(--primaria);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    transition: 0.2s;
    letter-spacing: 0.5px;
}

nav a:hover,
nav a:focus-visible,
nav a.active { color: var(--detalhe); }

a:focus-visible,
button:focus-visible {
    outline: 3px solid #bfdbfe;
    outline-offset: 2px;
}

.hero {
    background: var(--primaria);
    color: var(--branco);
    padding: 96px 0 150px;
    text-align: center;
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}

.hero h1 { color: var(--branco); font-size: clamp(2rem, 6vw, 3.2rem); margin-bottom: 16px; }
.hero p { font-size: 1.08rem; opacity: 0.9; max-width: 640px; margin: 0 auto; }

.tag {
    display: inline-block;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.35);
    color: #e2e8f0;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: .75rem;
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 18px;
}

.destaque { color: #fecaca; }

.hero-btns {
    display: flex;
    gap: 14px;
    justify-content: center;
    margin-top: 30px;
    flex-wrap: wrap;
}

.section-block { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 40px; }

.card {
    background: var(--branco);
    padding: 42px;
    border-radius: 14px;
    box-shadow: var(--shadow);
    border: 1px solid #f1f5f9;
}

.artigo-card {
    background: var(--branco);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.04);
    border: 1px solid #f1f5f9;
}

.article-highlight { border-top: 6px solid var(--detalhe); }
.muted { color: var(--muted); }
.meta { color: var(--muted); font-weight: 700; margin-bottom: 22px; }

.content-text {
    line-height: 1.85;
    color: var(--texto);
    font-size: 1.05rem;
    white-space: pre-wrap;
}

.ref-box {
    margin-top: 32px;
    padding-top: 18px;
    border-top: 1px solid #f1f5f9;
    font-style: italic;
    color: var(--muted);
    font-size: .95rem;
}

.btn-moderno,
.btn-secundario {
    padding: 14px 30px;
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    display: inline-block;
    transition: 0.2s;
    text-transform: uppercase;
    letter-spacing: .5px;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-moderno { background: var(--detalhe); color: white; }
.btn-moderno:hover { background: #7f1d1d; transform: translateY(-2px); }
.btn-secundario { border-color: rgba(255,255,255,.5); color: white; }
.btn-secundario:hover { background: rgba(255,255,255,.1); }

.btn-cta-nav {
    background: var(--detalhe);
    color: white;
    padding: 10px 14px;
    border-radius: 8px;
}

.grid-about { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 48px; align-items: start; }
.about-aside { background: #f1f5f9; padding: 32px; border-radius: 12px; border: 1px solid var(--border); position: sticky; top: 110px; }
.about-title { margin-bottom: 24px; border-bottom: 2px solid var(--detalhe); display: inline-block; font-size: 1.1rem; }
.about-list { list-style: none; }
.about-list li { margin-bottom: 14px; }
.quote { font-size: 0.9rem; color: var(--muted); font-style: italic; }

.layout-artigos { display: grid; grid-template-columns: 320px 1fr; gap: 32px; }
.sidebar { background: #f8fafc; padding: 24px; border-radius: 12px; position: sticky; top: 94px; height: 82vh; overflow-y: auto; border: 1px solid var(--border); }
.sidebar-item { display: block; width: 100%; text-align: left; padding: 12px; margin-bottom: 10px; color: #475569; background: transparent; border: 0; border-left: 3px solid transparent; border-radius: 8px; cursor: pointer; font-size: .9rem; }
.sidebar-item:hover { background: #f1f5f9; }
.sidebar-item.active { background: #fff; border-left-color: var(--detalhe); font-weight: bold; color: #1e293b; box-shadow: 0 4px 10px rgba(0,0,0,.05); }
.main-content { background: #fff; padding: 42px; border-radius: 15px; box-shadow: 0 4px 20px rgba(0,0,0,.03); min-height: 600px; border: 1px solid var(--border); }

.footer-inner { display: grid; gap: 8px; justify-items: center; }
footer {
    background: #020617;
    color: #94a3b8;
    padding: 48px 0;
    text-align: center;
    margin-top: 80px;
}

footer a { color: #cbd5e1; text-decoration: underline; }

.simple-main { padding: 90px 0; }

@media (max-width: 950px) {
    .layout-artigos,
    .grid-about { grid-template-columns: 1fr; }

    .sidebar,
    .about-aside { position: static; height: auto; }
}

@media (max-width: 800px) {
    .nav-toggle { display: inline-flex; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 16px;
        right: 16px;
        flex-direction: column;
        align-items: flex-start;
        background: white;
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 14px;
        box-shadow: var(--shadow);
        gap: 14px;
    }

    .nav-menu.open { display: flex; }

    .hero { clip-path: none; padding: 72px 0 90px; }
    .card,
    .artigo-card,
    .main-content { padding: 24px; }
}

.about-main {
    min-height: 70vh;
}

.about-content-card {
    background: #ffffff;
    border: 1px solid var(--border);
}