/* ============================================
   Herliss Briceño - Blog de Ciberseguridad
   Estilos Profesionales con Enfoque en Seguridad
   ============================================ */

/* === Variables CSS === */
:root {
    --primary-color: #0066cc;
    --secondary-color: #00a86b;
    --dark-bg: #1a1a2e;
    --darker-bg: #16213e;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #ffffff;
    --accent-red: #e74c3c;
    --accent-blue: #3498db;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* === Reset y Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: #f8f9fa;
}

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* === Header y Navegación === */
.main-header {
    background: var(--dark-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.nav-brand a {
    text-decoration: none;
    color: var(--text-light);
}

.nav-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.nav-brand .tagline {
    font-size: 0.875rem;
    color: var(--secondary-color);
    font-weight: 300;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: var(--primary-color);
    color: var(--text-light);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-light);
    margin: 3px 0;
    transition: var(--transition);
}

/* === Hero Section === */
.hero {
    background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
    color: var(--text-light);
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: #b0b0b0;
}

.hero-badges {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.badge {
    background: var(--secondary-color);
    color: var(--text-light);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* === Main Content === */
.main-content {
    padding: 3rem 0;
}

.main-content .container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

/* === Articles Section === */
.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    border-bottom: 3px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.article-card {
    background: white;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.article-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.article-meta .category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
}

.article-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.article-card h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.article-card h3 a:hover {
    color: var(--primary-color);
}

.article-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.read-more {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* === Sidebar === */
.sidebar section {
    background: white;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.sidebar h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.categories-widget ul {
    list-style: none;
}

.categories-widget li {
    margin-bottom: 0.75rem;
}

.categories-widget a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    display: block;
    padding: 0.5rem;
    border-radius: 4px;
}

.categories-widget a:hover {
    background: var(--primary-color);
    color: white;
    padding-left: 1rem;
}

.about-widget p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.btn-secondary {
    display: inline-block;
    background: var(--secondary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    transition: var(--transition);
    font-weight: 600;
}

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* === Footer === */
.main-footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #b0b0b0;
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--text-light);
    padding-left: 5px;
}

.security-link {
    color: var(--accent-red) !important;
    font-weight: 600;
}

.security-link:hover {
    color: var(--text-light) !important;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    color: #888;
    font-size: 0.875rem;
}

.footer-tech {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    color: #666;
}

/* === Responsive Design === */
@media (max-width: 968px) {
    .main-content .container {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--darker-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.3);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-content h2 {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* === Accesibilidad === */
a:focus,
button:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* === Animaciones === */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.article-card {
    animation: fadeIn 0.5s ease-out;
}

/* === Modo Oscuro (opcional - preparado para futuro) === */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #e0e0e0;
        --text-secondary: #b0b0b0;
    }
    
    body {
        background-color: #1a1a1a;
    }
    
    .article-card,
    .sidebar section {
        background: #2a2a2a;
        color: var(--text-primary);
    }
}