/* Variables de color actualizadas - Paleta más moderna y vibrante */
:root {
    --primary-color: #1a237e; /* Azul oscuro más profundo */
    --secondary-color: #5c6bc0; /* Azul medio más suave */
    --accent-color: #f44336; /* Rojo más brillante */
    --accent-hover: #d32f2f; /* Rojo más oscuro para hover */
    --gradient-start: #303f9f; /* Para gradientes modernos */
    --gradient-end: #1a237e; /* Para gradientes modernos */
    --light-bg: #f5f7fa; /* Fondo más claro y moderno */
    --card-bg: #ffffff; /* Fondo para tarjetas */
    --dark-text: #263238; /* Texto principal más oscuro */
    --medium-text: #455a64; /* Texto secundario */
    --light-text: #ffffff; /* Texto claro */
    --subtle-accent: #e8eaf6; /* Color de acento sutil */
    --shadow-color: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.15);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-sm: 4px;
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
    --transition-slow: 0.5s;
    --font-primary: 'Open Sans', sans-serif;
    --font-secondary: 'Roboto Slab', serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
}

/* Estilos generales mejorados */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    color: var(--dark-text);
    background-color: var(--light-bg);
    font-family: var(--font-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

/* --- Header Mejorado con Efecto Parallax --- */
.site-header {
    background-image: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)), 
                        url('https://images.unsplash.com/photo-1509228468518-180dd4864904?q=80&w=2670&auto=format&fit=crop');
    background-blend-mode: multiply;
    background-size: cover;
    background-position: center;
    color: var(--light-text);
    padding: 6rem 2rem 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.site-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 35, 126, 0.7);
    z-index: 1;
}

.header-content {
    position: relative;
    z-index: 2;
}

.site-header h1 {
    font-family: var(--font-secondary);
    font-size: 3.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: fadeInDown 1s ease-out;
}

.site-header p {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 300;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1.2s ease-out;
}

.header-cta {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--light-text);
    padding: 0.8rem 2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform var(--transition-fast) ease, 
                    background-color var(--transition-fast) ease,
                    box-shadow var(--transition-fast) ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: fadeInUp 1.4s ease-out;
}

.header-cta:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

/* --- Navegación Moderna con Sticky --- */
.main-navigation {
    background-color: var(--light-text);
    padding: 0;
    box-shadow: 0 2px 10px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all var(--transition-normal);
}

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

.nav-logo {
    font-family: var(--font-secondary);
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--primary-color);
    text-decoration: none;
    padding: var(--spacing-sm) 0;
    display: flex;
    align-items: center;
}

.nav-logo-img {
    height: 70px;
    width: auto;
    object-fit: contain;
}

.nav-list {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
    margin: 0;
    height: 100%;
}

.nav-item {
    margin: 0;
    height: 100%;
}

.nav-link {
    color: var(--dark-text);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-normal);
    display: inline-block;
    padding: 1.5rem var(--spacing-md);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
}

/* Línea de hover moderna */
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background-color: var(--primary-color);
    transition: width var(--transition-normal), left var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
    left: 0;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--dark-text);
}

/* --- Contenido Principal Mejorado --- */
.main-content {
    max-width: 1200px;
    margin: var(--spacing-xl) auto;
    padding: 0 var(--spacing-md);
}

.section {
    background-color: var(--card-bg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: transform var(--transition-normal), 
                   box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 0;
    background-color: var(--primary-color);
    transition: height var(--transition-slow) ease;
}

.section:hover::before {
    height: 100%;
}

.section:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px var(--shadow-color);
}

.section-title {
    font-family: var(--font-secondary);
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--subtle-accent);
    letter-spacing: -0.02em;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 80px;
    height: 3px;
    background-color: var(--secondary-color);
}

.section h3 {
    color: var(--primary-color);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    font-size: 1.8rem;
    font-weight: 600;
}

.section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--medium-text);
}

.section ul {
    list-style: none;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.section li {
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.section li::before {
    content: '•';
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: -1.5rem;
    top: -0.2rem;
}

/* --- Botón de Llamada a la Acción Moderno --- */
.button-cta {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--light-text);
    padding: 1rem 2.2rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: transform var(--transition-fast), 
                    background-color var(--transition-fast),
                    box-shadow var(--transition-fast);
    box-shadow: 0 4px 12px rgba(244, 67, 54, 0.3);
    margin-top: var(--spacing-md);
}

.button-cta:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 6px 18px rgba(244, 67, 54, 0.4);
}

/* Universidades asociadas */

.universidades-container {
    margin-top: 2rem;
}

/* Estilos para el slider de universidades */
.universidades-slider-container {
    position: relative;
    margin: 2rem 0;
    padding: 0 50px;
}

.universidades-slider {
    overflow: hidden;
    position: relative;
    margin: 0 auto;
}

.universidades-track {
    display: flex;
    transition: transform 0.5s ease;
    gap: 20px;
}

.universidad-card {
    flex: 0 0 280px;
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.universidad-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.universidad-logo {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #fff;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.universidad-logo img {
    max-width: 80%;
    max-height: 80%;
    object-fit: contain;
}

.universidad-card h4 {
    font-family: 'Roboto Slab', serif;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: #333;
}

.universidad-card p {
    font-size: 0.9rem;
    color: #666;
    margin: 0.3rem 0;
}

/* Estilos para los botones de navegación del slider */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #fff;
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    color: #333;
    transition: all 0.3s ease;
}

.slider-arrow:hover {
    background-color: #3366cc;
    color: white;
}

.slider-prev {
    left: 0;
}

.slider-next {
    right: 0;
}

/* Estilos para los indicadores del slider */
.slider-indicators {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
    gap: 8px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #ddd;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.indicator.active {
    background-color: #3366cc;
}

/* Estilos para el colaborador principal */
.colaborador-principal {
    margin: 3rem 0;
}

.colaborador-card {
    display: flex;
    flex-direction: column;
    background-color: #f0f5ff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
    margin-top: 1.5rem;
}

@media (min-width: 768px) {
    .colaborador-card {
        flex-direction: row;
        align-items: center;
    }
}

.colaborador-logo {
    flex-shrink: 0;
    width: 200px;
    height: 150px;
    margin: 0 auto 2rem;
    background-color: #fff;
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

@media (min-width: 768px) {
    .colaborador-logo {
        margin: 0 2rem 0 0;
    }
}

.colaborador-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.colaborador-info {
    flex-grow: 1;
}

.colaborador-info h4 {
    font-family: 'Roboto Slab', serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    color: #205080;
}

.colaborador-nombre {
    font-size: 1.1rem;
    color: #4a4a4a;
    margin-bottom: 1rem;
    font-weight: 500;
}

.colaborador-info p {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.button-link {
    display: inline-block;
    background-color: #3366cc;
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    margin-top: 0.5rem;
    transition: background-color 0.3s ease;
}

.button-link:hover {
    background-color: #254e9c;
}

/* --- Libros Destacados Mejorados --- */
.featured-books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.book-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--border-radius);
    background-color: var(--card-bg);
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform var(--transition-normal), 
                    box-shadow var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.03);
}

.book-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.book-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 12px 24px var(--shadow-hover);
}

.book-card:hover::before {
    transform: scaleX(1);
}

.book-cover {
    width: 160px;
    height: 220px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
    font-size: 0.9rem;
    font-family: var(--font-secondary);
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: all var(--transition-normal);
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-card:hover .book-cover {
    transform: scale(1.05);
    box-shadow: 0 6px 15px rgba(0,0,0,0.15);
}

.book-card h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: 600;
    transition: color var(--transition-normal);
}

.book-card:hover h4 {
    color: var(--secondary-color);
}

.book-card p {
    font-size: 0.95rem;
    color: var(--medium-text);
    line-height: 1.6;
}

/* --- Reuniones Mejoradas --- */
.schedule-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.meeting-card {
    background-color: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 5px solid var(--secondary-color);
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    margin: 1rem;
}

/* .meeting-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(92, 107, 192, 0.05), rgba(92, 107, 192, 0));
    z-index: 0;
} */

.meeting-card:hover {
    transform: translateY(-5px) scale(1.01);
    box-shadow: 0 10px 20px var(--shadow-hover);
}

.meeting-card h4 {
    font-family: var(--font-secondary);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 600;
}

.meeting-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    align-items: baseline;
    position: relative;
    z-index: 1;
}

.meeting-title {
    color: var(--primary-color);
    font-size: 1.4rem;
    font-weight: 600;

}

.meeting-date {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.meeting-info {
    margin-bottom: var(--spacing-sm);
    color: var(--medium-text);
    font-size: 1rem;
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
}

.meeting-info strong {
    color: var(--dark-text);
    min-width: 90px;
    display: inline-block;
}
.button-cta {
    display: inline-block;
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: transform var(--transition-fast), 
                    background-color var(--transition-fast),
                    box-shadow var(--transition-fast);
}

/* Estilos para el formulario de contacto */
.contact-form {
    max-width: 700px;
    margin: 2rem auto;
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #3a5a96;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-family: 'Open Sans', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus,
.form-textarea:focus {
    border-color: #3a5a96;
    box-shadow: 0 0 0 3px rgba(58, 90, 150, 0.2);
    outline: none;
}

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

.form-button {
    display: inline-block;
    background-color: #3a5a96;
    color: white;
    border: none;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: center;
    width: 100%;
}

.form-button:hover {
    background-color: #2c4575;
    transform: translateY(-2px);
}

.form-button:active {
    transform: translateY(0);
}

/* Mensajes de validación */
.form-input:invalid:not(:placeholder-shown),
.form-textarea:invalid:not(:placeholder-shown) {
    border-color: #e63946;
}

.form-input:valid:not(:placeholder-shown),
.form-textarea:valid:not(:placeholder-shown) {
    border-color: #2a9d8f;
}

/* Estilo para campo obligatorio */
.form-label::after {
    content: "*";
    color: #e63946;
    margin-left: 4px;
    display: inline-block;
}

.form-label.optional::after {
    content: "";
    display: none;
}

/* Diseño responsivo para el formulario */
@media (max-width: 768px) {
    .contact-form {
        padding: 1.5rem;
        margin: 1rem 0;
    }
    
    .form-button {
        padding: 0.75rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .contact-form {
        padding: 1.25rem;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
    
    .form-input,
    .form-textarea {
        padding: 0.6rem 0.8rem;
    }
}

/* Efectos de feedback al enviar */
.form-button.sending {
    background-color: #718096;
    cursor: not-allowed;
    position: relative;
}

.form-button.sending::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
    right: 20px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Mensaje de éxito y error */
.form-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 6px;
    font-weight: 500;
    display: none;
}

.form-message.success {
    background-color: rgba(42, 157, 143, 0.15);
    color: #2a9d8f;
    border-left: 4px solid #2a9d8f;
    display: block;
}

.form-message.error {
    background-color: rgba(230, 57, 70, 0.15);
    color: #e63946;
    border-left: 4px solid #e63946;
    display: block;
}

/* Estilo adicional para el enlace de correo electrónico */
.contact-email {
    margin-top: 2rem;
    text-align: center;
    font-size: 1.1rem;
}

.contact-email a {
    color: #3a5a96;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px dotted #3a5a96;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.contact-email a:hover {
    color: #e63946;
    border-color: #e63946;
}

/* --- Footer Mejorado --- */
footer {
    background: linear-gradient(135deg, var(--gradient-end), var(--gradient-start));
    color: var(--light-text);
    text-align: center;
    padding: 2rem var(--spacing-md);
    margin-top: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.footer-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: 1rem;
    text-align: center;
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-xs);
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--accent-color);
}

.footer-info {
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    list-style: none;
    padding: 0;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    
}

.social-links a {
    color: var(--light-text);
    font-size: 1rem;
    text-decoration: none;
    opacity: 0.8;
    transition: all var(--transition-normal);
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255,255,255,0.1);
    width: 40px;
    height: 40px;
}

.social-link:hover {
    opacity: 1;
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}

.footer-copyright {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 0.9rem;
    opacity: 0.7;
    text-align: center;
}

/* --- Animaciones --- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInDown {
    from { 
        opacity: 0; 
        transform: translateY(-20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

/* --- Media Queries --- */
@media (max-width: 1100px) {
    .site-header h1 {
        font-size: 3rem;
    }
    
    .section {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 992px) {
    .nav-container {
        flex-direction: column;
        padding: 0;
    }
    
    .nav-logo {
        padding: var(--spacing-sm) 0;
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    
    .nav-toggle {
        display: block;
        position: absolute;
        right: var(--spacing-md);
        top: var(--spacing-sm);
    }
    
    .nav-list {
        flex-direction: column;
        width: 100%;
        display: none;
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        width: 100%;
        text-align: center;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    
    .nav-link::after {
        display: none;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .featured-books-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .social-links-list {
        justify-content: center;
    }
}

@media (max-width: 600px) {
    .site-header {
        padding: 4rem 1rem 3rem;
    }
    
    .site-header h1 {
        font-size: 2.5rem;
    }
    
    .site-header p {
        font-size: 1.1rem;
    }
    
    .header-cta {
        padding: 0.7rem 1.5rem;
        font-size: 1rem;
    }
    
    .section {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-lg);
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .featured-books-grid {
        grid-template-columns: 1fr;
    }
    
    .book-cover {
        width: 140px;
        height: 190px;
    }
    
    .meeting-header {
        flex-direction: column;
    }
    
    .meeting-date {
        margin-top: var(--spacing-xs);
    }
    
    .button-cta, .form-button {
        padding: 0.9rem 1.8rem;
        font-size: 1rem;
        width: 100%;
        text-align: center;
    }
}