/* =====================
           RESET & BASE
           ===================== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            /* NNEXA Brand Colors */
            --color-primary: #4DB8B8;
            --color-primary-dark: #3A9999;
            --color-secondary: #FFD633;
            --color-secondary-dark: #E6C02E;
            --color-text: #1a1a1a;
            --color-text-light: #555555;
            --color-bg: #ffffff;
            --color-bg-alt: #f9fafb;
            --color-border: #e5e7eb;

            /* Typography */
            --font-base: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --font-size-base: 16px;
            --line-height-base: 1.6;

            /* Spacing */
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --spacing-xl: 4rem;
            --spacing-xxl: 6rem;

            /* Containers */
            --container-max: 1200px;
            --container-narrow: 800px;

            /* Border radius */
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;

            /* Shadows */
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);

            /* Transitions */
            --transition-base: 0.3s ease;
        }

        body {
            font-family: var(--font-base);
            font-size: var(--font-size-base);
            line-height: var(--line-height-base);
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        a:hover {
            color: var(--color-primary-dark);
        }

        /* =====================
           TYPOGRAPHY
           ===================== */
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            color: var(--color-text);
        }

        h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            margin-bottom: var(--spacing-md);
        }

        h2 {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            margin-bottom: var(--spacing-md);
        }

        h3 {
            font-size: clamp(1.25rem, 3vw, 1.75rem);
        }

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

        .lead {
            font-size: clamp(1.1rem, 2vw, 1.3rem);
            line-height: 1.7;
            color: var(--color-text-light);
        }

        strong {
            font-weight: 700;
            color: var(--color-text);
        }

        em {
            font-style: italic;
        }

        /* =====================
           LAYOUT UTILITIES
           ===================== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .container-narrow {
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .section {
            padding: var(--spacing-xl) 0;
        }

        .section-lg {
            padding: var(--spacing-xxl) 0;
        }

        .section-alt {
            background-color: var(--color-bg-alt);
        }

        /* Watercolor background effect (NNEXA style) */
        .section-watercolor {
            background: linear-gradient(135deg, rgba(77, 184, 184, 0.08) 0%, rgba(77, 184, 184, 0.02) 100%);
            position: relative;
            overflow: hidden;
        }

        .section-watercolor::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 60%;
            height: 150%;
            background: radial-gradient(ellipse, rgba(255, 214, 51, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        /* Grid utilities */
        .grid {
            display: grid;
            gap: var(--spacing-md);
        }

        .grid-2 {
            grid-template-columns: 1fr;
        }

        .grid-3 {
            grid-template-columns: 1fr;
        }

        @media (min-width: 768px) {
            .grid-2 {
                grid-template-columns: repeat(2, 1fr);
            }

            .grid-3 {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        /* Text utilities */
        .text-center {
            text-align: center;
        }

        .text-primary {
            color: var(--color-primary);
        }

        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }

        .mt-xl {
            margin-top: var(--spacing-xl);
        }

        .mt-xxl {
            margin-top: var(--spacing-xxl);
        }

        .section-spacer {
            margin-top: 10rem;
            margin-bottom: var(--spacing-lg);
        }

        /* =====================
           COMPONENTS: BUTTONS
           ===================== */
        .btn {
            display: inline-block;
            padding: 1rem 2rem;
            font-size: 1rem;
            font-weight: 700;
            text-align: center;
            text-decoration: none;
            border-radius: var(--radius-md);
            border: 2px solid transparent;
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .btn-primary {
            background-color: var(--color-secondary);
            color: var(--color-text);
            border-color: var(--color-secondary);
        }

        .btn-primary:hover {
            background-color: var(--color-secondary-dark);
            border-color: var(--color-secondary-dark);
            color: var(--color-text);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-outline:hover {
            background-color: var(--color-primary);
            color: white;
        }

        .btn-lg {
            padding: 1.2rem 2.5rem;
            font-size: 1.1rem;
        }

        .btn-full {
            width: 100%;
        }

        .btn-group {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            justify-content: center;
        }

        /* =====================
           COMPONENTS: HEADER
           ===================== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: white;
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-sm) 0;
            transition: all var(--transition-base);
        }

        .header.sticky {
            padding: 0.5rem 0;
            background-color: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-md);
        }

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

        .header .logo {
            max-width: 140px;
            z-index: 1001;
        }

        .header .logo img {
            width: 100%;
            height: auto;
        }

        /* Navegación */
        .main-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }

        .nav-list {
            list-style: none;
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            margin: 0;
            padding: 0;
        }

        .nav-list a {
            color: var(--color-text);
            font-weight: 600;
            font-size: 0.95rem;
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-primary);
            transition: width var(--transition-base);
        }

        .nav-list a:hover::after {
            width: 100%;
        }

        .btn-nav {
            padding: 0.6rem 1.2rem;
        }

        /* Menú Hamburguesa */
        .menu-toggle {
            display: none;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            z-index: 1001;
        }

        .menu-toggle-icon,
        .menu-toggle-icon::before,
        .menu-toggle-icon::after {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-text);
            transition: all var(--transition-base);
            position: relative;
        }

        .menu-toggle-icon::before,
        .menu-toggle-icon::after {
            content: '';
            position: absolute;
            left: 0;
        }

        .menu-toggle-icon::before { top: -8px; }
        .menu-toggle-icon::after { bottom: -8px; }

        .menu-toggle[aria-expanded="true"] .menu-toggle-icon {
            background-color: transparent;
        }

        .menu-toggle[aria-expanded="true"] .menu-toggle-icon::before {
            top: 0;
            transform: rotate(45deg);
        }

        .menu-toggle[aria-expanded="true"] .menu-toggle-icon::after {
            bottom: 0;
            transform: rotate(-45deg);
        }

        /* =====================
           COMPONENTS: HERO
           ===================== */
        .hero {
            background: linear-gradient(135deg, rgba(77, 184, 184, 0.12) 0%, rgba(77, 184, 184, 0.03) 100%);
            padding: var(--spacing-xxl) 0;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -10%;
            width: 50%;
            height: 120%;
            background: radial-gradient(ellipse, rgba(255, 214, 51, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 10;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .hero h1 {
            margin-bottom: var(--spacing-md);
        }

        .hero .lead {
            margin-bottom: var(--spacing-lg);
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            justify-content: center;
            margin: var(--spacing-lg) 0;
        }

        .badge {
            background-color: white;
            padding: var(--spacing-sm) var(--spacing-md);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.95rem;
        }

        .badge-icon {
            font-size: 1.3rem;
        }

        .hero-image {
            margin-top: var(--spacing-lg);
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
        }

        .hero-image img {
            width: 100%;
            height: auto;
        }

        /* =====================
           COMPONENTS: CARDS
           ===================== */
        .card {
            background-color: white;
            padding: var(--spacing-md);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .card-icon {
            font-size: 2.5rem;
            margin-bottom: var(--spacing-sm);
        }

        .card h3 {
            margin-bottom: var(--spacing-sm);
            font-size: 1.3rem;
        }

        .card p {
            color: var(--color-text-light);
            margin-bottom: 0;
        }

        /* =====================
           COMPONENTS: LIST
           ===================== */
        .check-list {
            list-style: none;
            padding: 0;
        }

        .check-list li {
            padding: var(--spacing-sm) 0;
            padding-left: 2rem;
            position: relative;
            line-height: 1.7;
        }

        .check-list li::before {
            content: '✅';
            position: absolute;
            left: 0;
            font-size: 1.2rem;
        }

        .cross-list {
            list-style: none;
            padding: 0;
        }

        .cross-list li {
            padding: var(--spacing-sm) 0;
            padding-left: 2rem;
            position: relative;
            line-height: 1.7;
        }

        .cross-list li::before {
            content: '❌';
            position: absolute;
            left: 0;
            font-size: 1.2rem;
        }

        /* =====================
           COMPONENTS: TABLE
           ===================== */
        .table-responsive {
            overflow-x: auto;
            margin: var(--spacing-md) 0;
        }

        .schedule-table {
            width: 100%;
            border-collapse: collapse;
            background-color: white;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .schedule-table thead {
            background-color: var(--color-primary);
            color: white;
        }

        .schedule-table th,
        .schedule-table td {
            padding: var(--spacing-sm) var(--spacing-md);
            text-align: left;
            border-bottom: 1px solid var(--color-border);
        }

        .schedule-table tbody tr:hover {
            background-color: var(--color-bg-alt);
        }

        .schedule-table tbody tr:last-child td {
            border-bottom: none;
        }

        /* =====================
           COMPONENTS: AUTHOR BIO
           ===================== */
        .author-bio {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-lg);
            align-items: center;
        }

        @media (min-width: 768px) {
            .author-bio {
                grid-template-columns: 300px 1fr;
            }
        }

        .author-photo {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

        .author-photo img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .author-details h2 {
            margin-bottom: var(--spacing-xs);
        }

        .author-details .subtitle {
            color: var(--color-text-light);
            font-style: italic;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-md);
        }

        .author-details p {
            margin-bottom: var(--spacing-sm);
            line-height: 1.7;
        }

        .author-details ul {
            margin-left: 1.5rem;
            margin-bottom: var(--spacing-sm);
        }

        /* =====================
           COMPONENTS: FOR WHO
           ===================== */
        .for-who-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: var(--spacing-md);
        }

        @media (min-width: 768px) {
            .for-who-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .for-who-card {
            background-color: white;
            padding: var(--spacing-md);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
        }

        .for-who-card.is-for {
            border-top: 4px solid var(--color-primary);
        }

        .for-who-card.not-for {
            border-top: 4px solid #ef4444;
        }

        .for-who-card h3 {
            margin-bottom: var(--spacing-md);
            font-size: 1.5rem;
        }

        /* =====================
           COMPONENTS: FAQ
           ===================== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background-color: white;
            margin-bottom: var(--spacing-sm);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: var(--spacing-md);
            background-color: transparent;
            border: none;
            font-size: 1.1rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color var(--transition-base);
            font-family: var(--font-base);
        }

        .faq-question:hover {
            background-color: var(--color-bg-alt);
        }

        .faq-icon {
            font-size: 1.5rem;
            transition: transform var(--transition-base);
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 var(--spacing-md);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 var(--spacing-md) var(--spacing-md);
        }

        .faq-answer p {
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* =====================
           COMPONENTS: FORM
           ===================== */
        .form {
            max-width: 600px;
            margin: 0 auto;
            background-color: white;
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
        }

        .form-group {
            margin-bottom: var(--spacing-md);
        }

        .form-label {
            display: block;
            margin-bottom: var(--spacing-xs);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .form-label .required {
            color: #ef4444;
        }

        .form-input {
            width: 100%;
            padding: 0.875rem 1rem;
            font-size: 1rem;
            border: 2px solid var(--color-border);
            border-radius: var(--radius-md);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            font-family: var(--font-base);
        }

        .form-input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(77, 184, 184, 0.1);
        }

        .form-checkbox {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-xs);
        }

        .form-checkbox input[type="checkbox"] {
            margin-top: 0.25rem;
            width: 18px;
            height: 18px;
            flex-shrink: 0;
        }

        .form-checkbox label {
            font-size: 0.9rem;
            line-height: 1.5;
            color: var(--color-text-light);
        }

        .form-checkbox label a {
            text-decoration: underline;
        }

        .form-footer {
            margin-top: var(--spacing-md);
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--color-border);
        }

        .form-security-notes {
            list-style: none;
            padding: 0;
            margin: var(--spacing-md) 0 0;
        }

        .form-security-notes li {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: var(--spacing-xs);
            padding-left: 1.5rem;
            position: relative;
        }

        .form-security-notes li::before {
            position: absolute;
            left: 0;
            font-size: 1rem;
        }

        .form-security-notes li:nth-child(1)::before {
            content: '🔒';
        }

        .form-security-notes li:nth-child(2)::before {
            content: '✅';
        }

        .form-security-notes li:nth-child(3)::before {
            content: '📩';
        }

        /* =====================
           COMPONENTS: FOOTER
           ===================== */
        .footer {
            background-color: var(--color-text);
            color: white;
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

        .footer-grid {
            display: grid;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-xl);
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }

        .footer-brand .logo {
            max-width: 140px;
            margin-bottom: var(--spacing-sm);
        }

        .footer-brand .logo img {
            width: 100%;
            /* Sin filtros para que se vea a color original */
        }
        .footer-brand .logo {
            max-width: 140px;
            margin-bottom: var(--spacing-sm);
            /* Opcional: si las letras oscuras no se leen bien, podríamos añadir un fondo aquí */
            /* background: rgba(255,255,255,0.9); padding: 5px; border-radius: 8px; */
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
            max-width: 300px;
        }

        .footer-heading {
            color: white;
            font-size: 1.1rem;
            margin-bottom: var(--spacing-sm);
        }

        .footer-contact ul,
        .footer-links-col {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .footer-contact a,
        .footer-links-col a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .footer-contact a:hover,
        .footer-links-col a:hover {
            color: var(--color-primary);
        }

        .footer-bottom {
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
        }

        .footer-copyright p {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            margin: 0;
        }

        /* =====================
           COMPONENTS: HIGHLIGHT BOX
           ===================== */
        .highlight-box {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            color: white;
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            text-align: center;
            box-shadow: var(--shadow-md);
            margin: var(--spacing-lg) 0;
        }

        .highlight-box h3 {
            color: white;
            margin-bottom: var(--spacing-sm);
        }

        .highlight-box p {
            font-size: 1.1rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* =====================
           RESPONSIVE ADJUSTMENTS
           ===================== */
        @media (max-width: 900px) {
            .menu-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background-color: white;
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: var(--spacing-xl);
                transform: translateY(-100%);
                transition: transform var(--transition-base) ease-in-out;
            }

            .header.menu-open .main-nav {
                transform: translateY(0);
            }

            .nav-list {
                flex-direction: column;
                gap: var(--spacing-lg);
                text-align: center;
            }

            .nav-list a {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 767px) {
            .hero-badges {
                flex-direction: column;
                align-items: center;
            }

            .btn-group {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-group .btn {
                width: 100%;
            }

            .schedule-table {
                font-size: 0.9rem;
            }

            .schedule-table th,
            .schedule-table td {
                padding: var(--spacing-xs) var(--spacing-sm);
            }
        }


        /* =====================
           ACCESSIBILITY
           ===================== */
        *:focus-visible {
            outline: 3px solid var(--color-secondary);
            outline-offset: 2px;
        }

        @media (prefers-reduced-motion: reduce) {

            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
        }