/* ============================================
    VARIABLES & RESET
    ============================================ */
    :root {
        /* Colores principales */
        --accent: #f97316;
        --accent-hover: #ea580c;
        --accent-light: #fed7aa;
        
        /* Fondos */
        --bg: #f7f7f7;
        --card: #ffffff;
        --overlay: rgba(0, 0, 0, 0.05);
        
        /* Textos */
        --text: #222;
        --text-light: #fff;
        --muted: #666;
        
        /* Bordes y sombras */
        --border: #e5e5e5;
        --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
        --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.06);
        --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.08);
        
        /* Espaciado */
        --spacing-xs: 0.5rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        
        /* Bordes redondeados */
        --radius-sm: 6px;
        --radius-md: 8px;
        --radius-lg: 10px;
        
        /* Transiciones */
        --transition-fast: 0.2s ease;
        --transition-base: 0.3s ease;
    }

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

    html, body {
        height: 100%;
        font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, Helvetica, sans-serif;
        background: var(--bg);
        color: var(--text);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }

    /* ============================================
    UTILIDADES
    ============================================ */
    .wrap {
        max-width: 1200px;
        margin: 0 auto;
        padding: var(--spacing-md);
    }

    /* ============================================
    HEADER
    ============================================ */
    .site-header {
        background: var(--accent);
        color: var(--text-light);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: var(--shadow-md);
        transition: box-shadow var(--transition-base);
    }

    .site-header.scrolled {
        box-shadow: var(--shadow-lg);
    }

    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: var(--spacing-md);
        padding: var(--spacing-sm) 0;
    }

    .brand {
        font-weight: 700;
        color: var(--text-light);
        text-decoration: none;
        font-size: 1.25rem;
        transition: opacity var(--transition-fast);
        letter-spacing: -0.02em;
    }

    .brand:hover {
        opacity: 0.85;
    }

    /* Navegación */
    .main-nav {
        position: relative;
    }

    #menuToggle {
        display: none;
        background: transparent;
        border: none;
        color: var(--text-light);
        font-size: 1.5rem;
        cursor: pointer;
        padding: var(--spacing-xs);
        transition: transform var(--transition-fast);
    }

    #menuToggle:hover {
        transform: scale(1.1);
    }

    #menuToggle:active {
        transform: scale(0.95);
    }

    .menu {
        display: flex;
        gap: var(--spacing-lg);
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .menu a {
        color: var(--text-light);
        text-decoration: none;
        font-weight: 600;
        font-size: 0.95rem;
        position: relative;
        padding: var(--spacing-xs) 0;
        transition: opacity var(--transition-fast);
    }

    .menu a::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: 2px;
        background: var(--text-light);
        transition: width var(--transition-base);
    }

    .menu a:hover {
        opacity: 0.9;
    }

    .menu a:hover::after {
        width: 100%;
    }

    /* ============================================
    LAYOUT PRINCIPAL
    ============================================ */
    .grid {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 1.5rem;
        padding: var(--spacing-xl) var(--spacing-md);
        max-width: 1200px;
        margin: 0 auto;
    }

    /* ============================================
    ARTÍCULOS Y TARJETAS
    ============================================ */
    .article,
    article.single {
        background: var(--card);
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-md);
        transition: transform var(--transition-base), box-shadow var(--transition-base);
    }

    .article:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }

    .sidebar {
        align-self: start;
        position: sticky;
        top: 100px;
    }

    .card {
        background: var(--card);
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
        margin-bottom: var(--spacing-md);
        box-shadow: var(--shadow-sm);
        transition: box-shadow var(--transition-base), transform var(--transition-base);
    }

    .card:hover {
        box-shadow: var(--shadow-md);
    }

    /* ============================================
    TIPOGRAFÍA
    ============================================ */
    .lead {
        font-size: 1.1rem;
        color: var(--muted);
        line-height: 1.7;
    }

    h1, h2, h3, h4, h5, h6 {
        color: var(--accent);
        margin-top: 0;
        margin-bottom: var(--spacing-sm);
        font-weight: 700;
        line-height: 1.3;
    }

    h1 {
        font-size: 1.75rem;
        letter-spacing: -0.02em;
    }

    h2 {
        font-size: 1.35rem;
    }

    h3 {
        font-size: 1.15rem;
    }

    p {
        margin: var(--spacing-sm) 0;
    }

    a {
        color: var(--accent);
        transition: color var(--transition-fast);
    }

    a:hover {
        color: var(--accent-hover);
    }

    /* Tarjetas con enlace */
    a.card {
        display: block;
        text-decoration: none;
        color: inherit;
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: transform var(--transition-base), box-shadow var(--transition-base);
    }

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

    a.card img {
        width: 100%;
        height: auto;
        display: block;
        transition: transform var(--transition-base);
    }

    a.card:hover img {
        transform: scale(1.05);
    }

    /* ============================================
    FORMULARIOS
    ============================================ */
    .card.small input[type="search"],
    input[type="text"],
    input[type="email"],
    textarea {
        width: 100%;
        padding: var(--spacing-xs) var(--spacing-sm);
        border: 1px solid var(--border);
        border-radius: var(--radius-sm);
        font-family: inherit;
        font-size: 0.95rem;
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    }

    input:focus,
    textarea:focus {
        outline: none;
        border-color: var(--accent);
        box-shadow: 0 0 0 3px var(--accent-light);
    }

    button,
    .btn {
        background: var(--accent);
        color: var(--text-light);
        border: none;
        padding: var(--spacing-xs) var(--spacing-md);
        border-radius: var(--radius-sm);
        font-weight: 600;
        cursor: pointer;
        transition: background var(--transition-fast), transform var(--transition-fast);
    }

    button:hover,
    .btn:hover {
        background: var(--accent-hover);
        transform: translateY(-1px);
    }

    button:active,
    .btn:active {
        transform: translateY(0);
    }

    /* ============================================
    FOOTER
    ============================================ */
    .site-footer {
        background: #222;
        color: var(--text-light);
        padding: var(--spacing-xl) 0;
        margin-top: var(--spacing-xl);
        text-align: center;
    }

    .site-footer a {
        color: var(--accent-light);
    }

    .site-footer a:hover {
        color: var(--text-light);
    }

    /* ============================================
    VIDEO RESPONSIVE
    ============================================ */
    .video-wrap {
        position: relative;
        padding-bottom: 56.25%;
        height: 0;
        overflow: hidden;
        border-radius: var(--radius-md);
        margin-top: var(--spacing-sm);
        box-shadow: var(--shadow-md);
    }

    .video-wrap iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: none;
    }

    /* ============================================
    RESPONSIVE - MOBILE
    ============================================ */
    @media (max-width: 900px) {
        .grid {
            grid-template-columns: 1fr;
            padding: var(--spacing-md);
            gap: var(--spacing-md);
        }
        
        .sidebar {
            position: static;
        }
        
        #menuToggle {
            display: inline-block;
        }
        
        .menu {
            display: none;
            flex-direction: column;
            position: absolute;
            right: 0;
            top: 52px;
            background: var(--card);
            padding: var(--spacing-sm);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            min-width: 200px;
            animation: slideDown var(--transition-base);
        }
        
        .menu.open {
            display: flex;
        }
        
        .menu a {
            color: var(--text);
            padding: var(--spacing-xs) var(--spacing-md);
            border-radius: var(--radius-sm);
        }
        
        .menu a:hover {
            background: var(--bg);
        }
        
        .menu a::after {
            display: none;
        }
        
        .header-inner {
            flex-direction: row;
            align-items: center;
        }
        
        h1 {
            font-size: 1.5rem;
        }
        
        h2 {
            font-size: 1.2rem;
        }
    }

    /* ============================================
    ANIMACIONES
    ============================================ */
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
        }
        to {
            opacity: 1;
        }
    }

    .fade-in {
        animation: fadeIn 0.5s ease;
    }

    /* ============================================
    UTILIDADES ADICIONALES
    ============================================ */
    .text-center {
        text-align: center;
    }

    .mt-0 { margin-top: 0; }
    .mt-1 { margin-top: var(--spacing-xs); }
    .mt-2 { margin-top: var(--spacing-md); }
    .mt-3 { margin-top: var(--spacing-lg); }

    .mb-0 { margin-bottom: 0; }
    .mb-1 { margin-bottom: var(--spacing-xs); }
    .mb-2 { margin-bottom: var(--spacing-md); }
    .mb-3 { margin-bottom: var(--spacing-lg); }

    /* Modo oscuro (opcional) */
    @media (prefers-color-scheme: dark) {
        :root {
            --bg: #1a1a1a;
            --card: #2d2d2d;
            --text: #e5e5e5;
            --muted: #a0a0a0;
            --border: #404040;
        }
    }