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

        :root {
            --primary-blue: #2C5F7C;
            --secondary-blue: #4A90A4;
            --accent-green: #5FA876;
            --light-green: #A8D5BA;
            --dark-gray: #34495E;
            --medium-gray: #5D6D7E;
            --light-gray: #ECF0F1;
            --bg-white: #FFFFFF;
            --text-dark: #2C3E50;
        }

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

        /* Barra de navegación */
        .navbar {
            background-color: var(--primary-blue);
            color: white;
            padding: 1rem;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .navbar h1 {
            font-size: 1.2rem;
            text-align: center;
            flex: 1;
        }

        .navbar-buttons {
            display: flex;
            gap: 0.5rem;
        }

        .navbar button {
            background-color: var(--accent-green);
            color: white;
            border: none;
            padding: 0.5rem 1rem;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.9rem;
            transition: background-color 0.3s;
        }

        .navbar button:hover {
            background-color: var(--light-green);
        }

        /* Contenedor principal */
        .container {
            display: grid;
            grid-template-columns: 1fr;
            min-height: calc(100vh - 70px);
        }

        .btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;

    width: 100%;
    max-width: 320px;

    padding: 0.75rem 1.5rem 0.75rem 1.5rem;
    margin-bottom: 0.75rem;
    border: none;
    border-radius: 8px;

    font-size: 1rem;
    font-weight: 600;

    color: #ffffff;
    text-decoration: none;
    cursor: pointer;

    transition: background-color 0.2s ease, transform 0.1s ease;
}



/* Verde menta */
.btn-mint {
    background-color: #3eb489; /* mint green */
}

.btn-mint:hover {
    background-color: #34a27a;
}

/* Azul rey */
.btn-royal {
    background-color: #1f3cff; /* royal blue */
}

.btn-royal:hover {
    background-color: #162fd1;
}
.btn-royal,
.btn-mint,
.btn-royal:visited,
.btn-mint:visited {
    color: white;
    text-decoration: none;
}

/* Feedback al hacer clic */
.btn:active {
    transform: scale(0.97);
}
.btn:focus-visible {
    outline: 3px solid rgba(0, 0, 0, 0.2);
    outline-offset: 2px;
}


        /* Barra lateral */
        .sidebar {
            display: none;
            background-color: var(--bg-white);
            padding: 1.5rem;
            box-shadow: 2px 0 5px rgba(0,0,0,0.05);
        }

        .sidebar h2 {
            color: var(--primary-blue);
            font-size: 1.3rem;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--accent-green);
            padding-bottom: 0.5rem;
        }

        .sidebar nav ul {
            list-style: none;
        }

        .sidebar nav a {
            display: block;
            color: var(--text-dark);
            text-decoration: none;
            padding: 0.75rem 1rem;
            margin-bottom: 0.5rem;
            border-radius: 5px;
            transition: all 0.3s;
            border-left: 3px solid transparent;
        }

        .sidebar nav a:hover {
            background-color: var(--light-gray);
            border-left-color: var(--accent-green);
            padding-left: 1.5rem;
        }

        /* Contenido principal */
        .main-content {
            padding: 1.5rem;
        }

        .topic {
            background-color: var(--bg-white);
            margin-bottom: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
            overflow: hidden;
        }

        .topic-header {
            background-color: var(--secondary-blue);
            color: white;
            padding: 1rem 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s;
        }

        .topic-header:hover {
            background-color: var(--primary-blue);
        }

        .topic-header h3 {
            font-size: 1.1rem;
        }

        .topic-header::after {
            content: '▼';
            font-size: 0.8rem;
            transition: transform 0.3s;
        }

        .topic-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease-out;
        }

        .topic:target .topic-content {
            max-height: 2000rem;
            transition: max-height 0.5s ease-in;
        }

        .topic:target .topic-header::after {
            transform: rotate(180deg);
        }

       
        .resources {
            padding: 1.5rem;
        }

        .resource-item {
            padding: 1rem;
            margin-bottom: 0.75rem;
            background-color: var(--light-gray);
            border-left: 4px solid var(--accent-green);
            border-radius: 4px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .resource-item:hover {
            background-color: #D5DBDB;
        }

        .resource-type {
            display: inline-block;
            background-color: var(--accent-green);
            color: white;
            padding: 0.25rem 0.75rem;
            border-radius: 15px;
            font-size: 0.8rem;
            margin-left: 0.5rem;
        }

        .resource-info {
            flex: 1;
        }

        .resource-title {
            font-weight: 600;
            color: var(--primary-blue);
            margin-bottom: 0.25rem;
        }

        .resource-description {
            font-size: 0.9rem;
            color: var(--medium-gray);
        }

        /* Modal para recomendar recursos */
.modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--bg-white);
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 8px;
}

.modal:target {
    display: block;
}

/* Overlay oscuro detrás del modal */
.modal:target::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    
    z-index: -1;
}

.cerrar-modal {
    position: absolute;
    top: 15px;
    right: 15px;
    text-decoration: none;
    font-size: 28px;
    color: var(--light-gray);
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s;
}

.cerrar-modal:hover {
    color: var(--accent-green);
}

/* Estilos del formulario */
.formulario-recursos {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.formulario-recursos h2 {
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.formulario-recursos p {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.formulario-recursos label {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.formulario-recursos input,
.formulario-recursos select,
.formulario-recursos textarea {
    padding: 0.75rem;
    border: 2px solid var(--light-gray);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.formulario-recursos input:focus,
.formulario-recursos select:focus,
.formulario-recursos textarea:focus {
    outline: none;
    border-color: var(--accent-green);
}

.formulario-recursos textarea {
    resize: vertical;
    min-height: 100px;
}

.formulario-recursos button[type="submit"] {
    background-color: var(--accent-green);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 0.5rem;
}

.formulario-recursos button[type="submit"]:hover {
    background-color: var(--secondary-blue);
}

/* Responsive */
@media (max-width: 768px) {
    .modal {
        padding: 1.5rem;
        width: 95%;
    }
    
    .formulario-recursos h2 {
        font-size: 1.3rem;
    }
}

        /* Tablet y desktop */
        @media (min-width: 768px) {
            .navbar h1 {
                font-size: 1.5rem;
            }

            .container {
                grid-template-columns: 280px 1fr;
            }

            .sidebar {
                display: block;
            }

            .main-content {
                padding: 2rem;
            }

            .topic-header h3 {
                font-size: 1.3rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                grid-template-columns: 320px 1fr;
            }

            .main-content {
                max-width: 1200px;
                margin: 0 auto;
                padding: 2.5rem;
            }
        }
        a,
a:visited,
a:hover,
a:active {
    text-decoration: none;
    color: inherit;
}