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

        body {
            font-family: 'IBM Plex Sans', sans-serif;
            background-color: #f1f1f1;
            color: #1a1a1a;
            line-height: 1.6;
        }

        html, body {
            height: 100%;
            }

            body {
            display: flex;
            flex-direction: column;
            }

            .page-wrapper {
            flex: 1;
            }
        
        .header-image {
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 0;
            margin: 0;
        }

        .header-image img {
            width: 100%;
            max-width: 100%;
            height: auto;
            display: block;
        }

        .navbar {
            background-color: #f1f1f1;
            padding: 20px 0;
            border-bottom: 1px solid #ddd;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 20px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        .nav-item {
            position: relative;
        }

        .nav-link {
            text-decoration: none;
            color: #1a1a1a;
            font-weight: 500;
            font-size: 16px;
            padding-bottom: 5px;
            border-bottom: 3px solid #53a484;
            transition: all 0.3s ease;
        }

        .nav-link:hover {
            opacity: 0.8;
        }

        .language-selector {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .language-selector a {
            color: #1a1a1a;
            text-decoration: none;
            font-weight: 400;
            font-size: 14px;
            transition: opacity 0.3s ease;
        }

        .language-selector a:hover {
            opacity: 0.7;
        }

        .language-separator {
            color: #53a484;
            font-weight: bold;
        }

        a {
            color: #53a484;
            text-decoration: underline;
        }

        .separator-line {
            width: 100%;
            height: 4px;
            background-color: #53a484;
            border: none;
            margin: 40px 0;
        }

        hr.separator {
            width: 100%;
            height: 4px;
            background-color: #53a484;
            border: none;
            margin: 40px 0;
        }

        .accordion {
            width: 100%;
            margin: 20px 0;
        }

        .accordion-item {
            border-bottom: 1px solid #ddd;
        }

        .accordion-header {
            background-color: #f1f1f1;
            border: none;
            width: 100%;
            padding: 20px;
            text-align: left;
            cursor: pointer;
            font-family: 'IBM Plex Sans', sans-serif;
            font-size: 18px;
            font-weight: bold;
            color: #1a1a1a;
            transition: background-color 0.3s ease;
            position: relative;
        }

        .accordion-header:hover {
            background-color: #e8e8e8;
        }

        .accordion-header:focus {
            outline: 2px solid #53a484;
            outline-offset: -2px;
        }

        /* Icona de fletxa */
        .accordion-header::after {
            content: '+';
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 24px;
            font-weight: bold;
            color:#1a1a1a ;
            transition: transform 0.3s ease;
        }

        .accordion-header.active::after {
            content: '−';
            transform: translateY(-50%);
        }

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            background-color: #53a484;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            padding: 0 20px;
        }

        .accordion-content.active {
            padding: 5px 20px 15px 20px;
        }

        .accordion-content p {
            color: #f1f1f1;
            font-size: 16px;
            line-height: 1.6;
            margin-bottom: 15px;
        }

        .accordion-content p:last-child {
            margin-bottom: 0;
        }

        .sub-accordion .accordion-header.sub {
            background-color: #53a484;
            font-size: 16px;
            padding: 15px;
            margin-top: 10px;
            color: #fff;
        }

        .sub-accordion .accordion-header.sub:hover {
            background-color: #489573;
        }

        .sub-accordion .accordion-header.sub::after {
            content: '+';
            position: absolute;
            right: 20px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 20px;
            font-weight: bold;
            color: #fff;
            transition: transform 0.3s ease;
        }

        .sub-accordion .accordion-header.sub.active::after {
            content: '−';
        }

        .sub-accordion .accordion-item:first-child .accordion-header.sub {
            margin-top: 0; /* treu espai superior */
        }

        .sub-accordion .accordion-content {
            background-color: #53a484;
            padding: 0 20px;
            transition: max-height 0.3s ease-out, padding 0.3s ease-out;
            overflow: hidden;
        }

        .sub-accordion .accordion-content.active {
            padding: 15px 20px;
        }

        .text-centered {
            max-width: 1200px;
            margin: 40px auto;
            padding: 0 20px;
            text-align: center;
            background-color: #f1f1f1;
            color: #1a1a1a;
        }

        .text-centered h2 {
            font-size: 32px;
            font-weight: 600;
            margin-bottom: 20px;
            color: #1a1a1a;
        }

        .text-centered h3 {
            font-size: 24px;
            font-weight: 500;
            margin-bottom: 15px;
            color: #1a1a1a;
        }

        .text-centered p {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 20px;
            color: #1a1a1a;
        }

        .text-centered p:last-child {
            margin-bottom: 0;
        }

        .text-centered-spacious {
            max-width: 1200px;
            margin: 60px auto;
            padding: 0 20px;
            text-align: center;
            background-color: #f1f1f1;
            color: #1a1a1a;
        }

        .text-centered-spacious h2 {
            font-size: 36px;
            font-weight: 600;
            margin-bottom: 30px;
            color: #1a1a1a;
        }

        .text-centered-spacious p {
            font-size: 18px;
            line-height: 1.8;
            margin-bottom: 25px;
            color: #1a1a1a;
        }

        .text-centered-compact {
            max-width: 800px;
            margin: 20px auto;
            padding: 0 20px;
            text-align: center;
            background-color: #f1f1f1;
            color: #1a1a1a;
        }

        .text-centered-compact h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #1a1a1a;
        }

        .text-centered-compact p {
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 15px;
            color: #1a1a1a;
        }

        .responsive-img {
            display: block;
            margin: 0 auto;
            max-width: 100%;
            width: 100%;
            max-width: 800px; /* límit superior en pantalles grans */
            height: auto;
        }

        html {scroll-behavior: smooth;}

        @media (max-width: 768px) {
            .nav-container {
                flex-direction: column;
                gap: 20px;
            }

            .nav-menu {
                flex-wrap: wrap;
                justify-content: center;
                gap: 20px;
            }

            .language-selector {
                order: -1;
            }

            .accordion-header {
                padding: 15px;
                font-size: 16px;
            }
            
            .accordion-content {
                padding: 0 15px;
            }
            
            .accordion-content.active {
                padding: 15px;
            }

            .text-centered,
            .text-centered-spacious,
            .text-centered-compact {
                margin: 20px;
                padding: 0 15px;
            }

            .text-centered h2,
            .text-centered-spacious h2 {
                font-size: 24px;
            }

            .text-centered-spacious {
                margin: 30px 20px;
            }

            .text-centered p,
            .text-centered-spacious p {
                font-size: 16px;
            }
        }

        .text-section {
            max-width: 1200px;
            margin: 40px auto;
            padding: 30px;
            border: 4px solid #53a484;
            background-color: #f1f1f1;
        }
        .section-wrapper {
            padding-inline: clamp(16px, 5vw, 40px); /* marges laterals flexibles */
        }

        .text-section p {
            margin-bottom: 20px;
            font-size: 16px;
            line-height: 1.8;
        }

        .form-section {
            max-width: 800px;
            margin: 40px auto;
            padding: 30px;
            background-color: #f1f1f1;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: #1a1a1a;
        }

        .form-input {
            width: 100%;
            padding: 12px;
            border: 2px solid #53a484;
            background-color: #f1f1f1;
            color: #1a1a1a;
            font-family: 'IBM Plex Sans', sans-serif;
            font-size: 16px;
            transition: border-color 0.3s ease;
        }

        .form-input:focus {
            outline: none;
            border-color: #1a1a1a;
        }

        .form-textarea {
            resize: vertical;
            min-height: 120px;
        }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .custom-amount-wrapper {
            display: inline-block;
            min-width: 60px;
            white-space: nowrap;
            outline: none;
            }

        .custom-amount-wrapper:empty:before {
            content: attr(data-placeholder);
            color: #ccc;
            pointer-events: none;
        }
        #custom-amount.active {
            background-color: #3b7963;
            color: white;
            border-radius: 6px;
            }

        @media (min-width: 768px) {
            .form-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 15px;
        }

        .custom-checkbox {
            display: flex;
            align-items: center;
            position: relative;
            cursor: pointer;
            user-select: none;
            gap: 8px;
        }

        .custom-checkbox input[type="checkbox"] {
            position: absolute;
            opacity: 0;
            height: 0;
            width: 0;
        }

        .checkmark {
            width: 20px;
            height: 20px;
            background-color: #f1f1f1;
            border: 2px solid #53a484;
            position: relative;
        }

        .custom-checkbox input:checked + .checkmark {     
            background-color: #53a484;
        }

        .checkmark:after {
            content: "";
            position: absolute;
            display: none;
            left: 5px;
            top: 2px;
            width: 6px;
            height: 10px;
            border: solid #f1f1f1;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }

        .custom-checkbox input:checked + .checkmark:after {
            display: block;
        }

        .btn {
            background-color: #53a484;
            color: #f1f1f1;
            border: none;
            padding: 12px 30px;
            font-family: 'IBM Plex Sans', sans-serif;
            font-size: 16px;
            font-weight: 500;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 10px;
        }

        .btn:hover {
            background-color: #4a9275;
            transform: translateY(-2px);
        }

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

        .btn.active {
            background-color: #3b7963; /* un verd més fosc com a indicador actiu */
            color: #ffffff;
            }

        .green-block {
            width: 100%;
            background-color: #53a484;
            padding: 60px 0;
            margin: 40px 0;
        }

        .green-block-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .green-block h2 {
            font-size: 32px;
            margin-bottom: 20px;
            font-weight: 600;
        }

        .green-block p {
            font-size: 18px;
            line-height: 1.8;
            margin-bottom: 15px;
        }

        .share-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            margin-top: 20px;
        }

        .share-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: bold;
            color: white;
            font-size: 14px;
            transition: background-color 0.3s ease;
        }
        .share-btn i {
            font-size: 16px;
        }

        .share-btn.whatsapp { background-color: #25D366; }
        .share-btn.telegram { background-color: #0088cc; }
        .share-btn.twitter { background-color: #000000; }
        .share-btn.facebook { background-color: #3b5998; }
        .share-btn.linkedin { background-color: #0077b5; }

        .share-btn:hover {
            opacity: 0.9;
        }

        @media (max-width: 768px) {
            .text-section,
            .form-section {
                margin: 20px;
                padding: 20px;
            }

            .green-block {
                padding: 40px 0;
            }

            .green-block h2 {
                font-size: 24px;
            }

            .green-block p {
                font-size: 16px;
            }
        }