/* ============================================================
   ESTILO COMPARTIDO — Artículos técnicos NVA
   Usado por: index.html y cada página individual de artículo.
   Reutiliza la paleta oficial NVA definida en la página principal.
   ============================================================ */
:root {
    --verde-profundo: #1F4D3A;
    --verde-primario: #5F9448;
    --verde-oscuro:   #1F4D3A;
    --arena:          #FFFFFF;
    --gris-texto:     #5A5A5A;
    --gris-suave:     #8F9095;
    --gris-borde:     #E8E4DB;
    --grafito:        #2E2E2E;
    --cobre:          #B88746;
    --blanco:         #FFFFFF;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--arena);
    color: var(--grafito);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-family: 'Merriweather', Georgia, serif;
    font-weight: 700;
    color: var(--verde-profundo);
}

a { color: var(--verde-primario); }

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

/* ===== HEADER SIMPLE ===== */
.art-header {
    background: var(--arena);
    border-bottom: 2px solid #E4D9BE;
    padding: 16px 40px;
}

.art-header-inner {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.art-header img.logo { height: 44px; }

.art-header .volver {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--verde-profundo);
    text-decoration: none;
}

/* ===== BREADCRUMB ===== */
.art-breadcrumb {
    max-width: 860px;
    margin: 20px auto 0;
    padding: 0 20px;
    font-size: 0.8rem;
    color: var(--gris-suave);
}

.art-breadcrumb a { color: var(--gris-suave); text-decoration: none; }
.art-breadcrumb a:hover { color: var(--verde-primario); }

/* ===== CONTENEDOR ARTÍCULO ===== */
.art-container {
    max-width: 860px;
    margin: 0 auto;
    padding: 24px 20px 80px;
}

.art-tag {
    display: inline-block;
    background: rgba(184,135,70,0.12);
    color: var(--cobre);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.art-container h1 {
    font-size: 2.1rem;
    line-height: 1.2;
    margin-bottom: 14px;
}

.art-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gris-suave);
    font-size: 0.85rem;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.art-meta strong { color: var(--grafito); font-weight: 600; }

.art-hero-img {
    width: 100%;
    height: 360px;
    object-fit: cover;
    border-radius: 14px;
    margin-bottom: 32px;
    background: #E8E5DE;
}

.art-hero-placeholder {
    width: 100%;
    height: 360px;
    border-radius: 14px;
    margin-bottom: 32px;
    background: linear-gradient(135deg, #EAF3E3, #F3EFE5);
    border: 1.5px dashed var(--gris-borde);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gris-suave);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    padding: 20px;
}

.art-body h2 {
    font-size: 1.4rem;
    margin: 36px 0 14px;
}

.art-body h3 {
    font-size: 1.15rem;
    margin: 26px 0 10px;
    color: var(--grafito);
}

.art-body p {
    font-size: 1rem;
    color: var(--gris-texto);
    margin-bottom: 16px;
}

.art-body a { font-weight: 600; text-decoration: underline; }

.art-pending {
    background: #FFF6D9;
    border: 1.5px dashed var(--cobre);
    border-radius: 10px;
    padding: 16px 18px;
    font-size: 0.88rem;
    color: #5A4A2A;
    margin-bottom: 24px;
}

.art-pending strong { color: var(--cobre); }

/* ===== BAJADA (subtítulo bajo el H1) ===== */
.art-bajada {
    font-size: 1.08rem;
    line-height: 1.5;
    color: var(--gris-suave);
    margin: -4px 0 18px;
}

/* ===== LEAD / DESTACADO ===== */
.art-lead {
    font-family: 'Merriweather', Georgia, serif;
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.5;
    color: var(--verde-profundo);
    background: #EAF3E3;
    border-left: 4px solid var(--verde-primario);
    border-radius: 4px;
    padding: 18px 22px;
    margin: 0 0 28px;
}

/* ===== CALLOUT (nota informativa dentro del cuerpo) ===== */
.art-callout {
    background: #FAFAF7;
    border: 1px solid var(--gris-borde);
    border-left: 4px solid var(--cobre);
    border-radius: 8px;
    padding: 16px 20px;
    margin: 8px 0 24px;
}

.art-callout p { margin-bottom: 0; font-size: 0.95rem; }
.art-callout p + p { margin-top: 10px; }
.art-callout strong { color: var(--grafito); }

/* ===== LISTAS DENTRO DEL CUERPO ===== */
.art-body ul, .art-body ol {
    margin: 0 0 20px 22px;
}

.art-body li {
    font-size: 1rem;
    color: var(--gris-texto);
    margin-bottom: 10px;
}

/* ===== REFERENCIAS ===== */
.art-referencias {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--gris-borde);
}

.art-referencias h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--gris-suave);
    margin: 0 0 12px;
}

.art-referencias ol {
    margin: 0 0 0 18px;
    padding: 0;
}

.art-referencias li {
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--gris-suave);
    margin-bottom: 8px;
}

.art-referencias a { color: var(--gris-suave); }

/* ===== CTA ===== */
.art-cta {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--verde-primario);
    color: var(--blanco);
    padding: 13px 26px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.92rem;
    margin: 20px 0 8px;
    transition: background 0.2s;
}

.art-cta:hover { background: var(--verde-oscuro); }

/* ===== RELACIONADOS ===== */
.art-relacionados {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--gris-borde);
}

.art-relacionados h3 {
    font-size: 1.05rem;
    margin-bottom: 18px;
}

.art-relacionados-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.art-rel-card {
    display: block;
    background: #FAFAF7;
    border: 1px solid var(--gris-borde);
    border-radius: 10px;
    padding: 16px;
    text-decoration: none;
    transition: all 0.2s;
}

.art-rel-card:hover {
    border-color: var(--verde-primario);
    transform: translateY(-2px);
}

.art-rel-card span.cat {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--verde-primario);
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 6px;
}

.art-rel-card span.titulo {
    display: block;
    font-family: 'Merriweather', serif;
    font-weight: 700;
    color: var(--grafito);
    font-size: 0.95rem;
}

/* ===== ÍNDICE DE ARTÍCULOS (index.html) ===== */
.art-index-header {
    max-width: 860px;
    margin: 40px auto 8px;
    padding: 0 20px;
    text-align: center;
}

.art-index-header h1 { font-size: 2rem; margin-bottom: 10px; }
.art-index-header p { color: var(--gris-suave); font-size: 1rem; }

.art-index-grid {
    max-width: 1080px;
    margin: 40px auto 80px;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.art-card {
    background: var(--blanco);
    border: 1px solid var(--gris-borde);
    border-radius: 14px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    transition: all 0.3s ease;
}

.art-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 14px 34px rgba(0,0,0,0.08);
    border-color: var(--verde-primario);
}

.art-card-img {
    width: 100%;
    height: 190px;
    object-fit: cover;
    background: #E8E5DE;
}

.art-card-img-placeholder {
    width: 100%;
    height: 190px;
    background: linear-gradient(135deg, #EAF3E3, #F3EFE5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gris-suave);
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    padding: 10px;
}

.art-card-body {
    padding: 20px 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.art-card-body h4 {
    font-size: 1.05rem;
    color: var(--grafito);
    line-height: 1.35;
}

.art-card-body p {
    color: var(--gris-suave);
    font-size: 0.85rem;
    line-height: 1.5;
    flex: 1;
}

.art-card-leer {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--verde-primario);
    font-weight: 600;
    font-size: 0.85rem;
    margin-top: 6px;
}

/* ===== FOOTER (idéntico al del sitio principal) ===== */
.footer-info {
    background-color: var(--verde-primario);
    padding: 28px 40px;
}

.footer-info-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--blanco);
    font-size: 0.82rem;
    opacity: 0.9;
}

.footer-info-item svg { width: 18px; height: 18px; opacity: 0.7; flex-shrink: 0; }

@media (max-width: 768px) {
    .art-header { padding: 14px 20px; }
    .art-container h1 { font-size: 1.6rem; }
    .art-hero-img, .art-hero-placeholder { height: 220px; }
    .art-index-header { margin-top: 24px; }
    .footer-info-container { flex-direction: column; text-align: center; }
}