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

:root {
    --color-primary: #1e40af;
    /* Azul fuerte para acentos */
    --color-primary-dark: #1e3a8a;
    /* Azul más oscuro */
    --color-secondary: #dc2626;
    /* Rojo vino para contrastes */
    --color-accent: #d97706;
    /* Ámbar dorado */
    --color-success: #059669;
    /* Verde oliva */
    --color-warning: #d97706;
    /* Ámbar */
    --color-text: #1f2937;
    /* Negro suave */
    --color-text-light: #6b7280;
    /* Gris medio */
    --color-bg: #fef7ed;
    /* Beige crema claro */
    --color-border: #d1d5db;
    /* Gris claro */
    --color-white: #ffffff;
    /* Blanco puro */
    --color-coffee: #92400e;
    /* Marrón café */
    --color-coffee-light: #a16207;
    /* Marrón café claro */
    --color-library-brown: #78350f;
    /* Marrón biblioteca */
    --color-cream: #fef3c7;
    /* Crema suave */
    --color-paper: #f9fafb;
    /* Blanco papel */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.2);
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    opacity: 0;
    transition: opacity 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

body.page-loaded {
    opacity: 1;
}

.page-loader {
    position: fixed;
    inset: 0;
    background: rgba(254, 247, 237, 0.96);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.4s ease;
}

.page-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    margin: auto;
    width: 60px;
    height: 60px;
    border: 6px solid rgba(146, 64, 14, 0.18);
    border-top-color: var(--color-coffee);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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


/* ============================================
   HEADER
   ============================================ */
.header {
    background: linear-gradient(135deg, rgba(146, 64, 14, 0.85) 0%, rgba(120, 53, 15, 0.85) 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

@media (max-width: 1024px) {
    .header-content {
        padding: 0 1.5rem;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
        gap: 0.5rem;
    }
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
}

@media (max-width: 768px) {
    .logo {
        gap: 10px;
    }
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
    border-radius: 700px
}

@media (min-width: 768px) {
    .logo-img {
        height: 95px;
    }
}

.desktop-nav {
    display: none;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

@media (max-width: 1024px) {
    .desktop-nav {
        gap: 0.5rem;
    }

    .desktop-nav a {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
}



.mobile-menu {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    right: 0;
    width: 250px;
    background: rgba(146, 64, 14, 0.9);
    box-shadow: var(--shadow-xl);
    padding: 1rem 0;
    z-index: 1000;
    border-radius: 0 0 0.5rem 0.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu.active {
    display: flex;
}

@media (max-width: 1024px) {
    .mobile-menu {
        width: 280px;
    }
}

@media (max-width: 768px) {
    .mobile-menu {
        width: 100%;
        left: 0;
        right: auto;
        border-radius: 0;
    }
}

.mobile-menu a {
    color: rgba(255, 255, 255, 0.92);
    text-decoration: none;
    padding: 0.75rem 2rem;
    border-radius: 999px;
    font-weight: 600;
    transition: all 0.25s ease;
}

.mobile-menu a:hover,
.mobile-menu a.active {
    background: rgba(255, 255, 255, 0.18);
}

.desktop-nav a {
    color: rgba(255, 255, 255, 0.92);
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 999px;
    font-weight: 600;
    transition: all 0.25s ease;
}

.desktop-nav a:hover,
.desktop-nav a.active {
    background: rgba(255, 255, 255, 0.18);
}

.btn-nav {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cart-toggle {
    position: relative;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.cart-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: var(--color-secondary);
    color: white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.menu-toggle {
    display: block;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.menu-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.btn-nav:hover {
    background: rgba(255, 255, 255, 0.28);
}


.logo i {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
}

.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
}

.logo .tagline {
    font-size: 0.85rem;
    opacity: 0.9;
    margin-top: 0.25rem;
}

.header-stats {
    display: baseline;
    gap: 1rem;
    font-size: 1.15rem;
    margin-top: 50px;

}

.stat {
    display: baseline;
    align-items: center;
    gap: 1.5rem;
    background: rgba(254, 243, 199, 0.9);
    padding: 0.5rem 5rem;
    border-radius: 5.5rem;
    color: var(--color-text);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-coffee-light) 100%);
    color: var(--color-text);
    padding: 4rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: var(--color-text);
}

.hero-content p {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
    color: var(--color-text-light);
}

/* ============================================
   FILTROS Y BÚSQUEDA
   ============================================ */
.filtros-section {
    background: var(--color-paper);
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-md);
    border-radius: 0.75rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid var(--color-border);
}

.filtros-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.categorias-filtro {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.cat-btn {
    padding: 0.6rem 1.2rem;
    background: var(--color-cream);
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.cat-btn:hover {
    background: var(--color-accent);
    color: white;
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.cat-btn.active {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

.busqueda {
    flex: 1;
}

.input-busqueda {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: var(--transition);
}

.input-busqueda:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.categorias-filtro {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.filtro-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--color-border);
    background: white;
    color: var(--color-text);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    font-weight: 500;
}

.filtro-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filtro-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-coffee));
    color: white;
    border-color: transparent;
}

/* ============================================
   INFO SECCIÓN
   ============================================ */
.info-seccion {
    max-width: 1200px;
    margin: 0 auto 2rem;
    padding: 0 2rem;
}

.container {
    margin: 0;
}

.resultados-texto {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* ============================================
   MAIN CONTENT Y GRID
   ============================================ */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 4rem;
}

.libros-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.libro-card {
    background: var(--color-white);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
}

.libro-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.libro-portada {
    position: relative;
    width: 100%;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-cream), var(--color-paper));
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px 8px 0 0;
}

.libro-portada img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    border-radius: 8px 8px 0 0;
}

.libro-card:hover .libro-portada img {
    transform: scale(1.05);
}

.libro-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-coffee), var(--color-library-brown));
    color: var(--color-paper);
    font-size: 3rem;
    border-radius: 8px 8px 0 0;
}

.libro-info {
    padding: 1rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.libro-titulo {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    line-height: 1.3;
    min-height: 2.6rem;
    overflow: hidden;
    display: -webkit-box;
    line-clamp: 2;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    -webkit-box-orient: vertical;
}

.libro-categoria {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    width: fit-content;
}

.libro-precio {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-top: auto;
    margin-bottom: 0.75rem;
}

.libro-acciones {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.btn-small {
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 0.4rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: var(--transition);
    width: 100%;
}

.btn-detalles {
    background: var(--color-coffee);
    color: white;
}

.btn-detalles:hover {
    background: var(--color-library-brown);
}

.btn-favorito {
    background: var(--color-cream);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-favorito:hover {
    background: var(--color-accent);
    color: white;
}

.btn-favorito.favorito {
    background: var(--color-accent);
    color: white;
}


/* ============================================
   PAGINACIÓN
   ============================================ */
.paginacion-section {
    padding: 2rem;
    background: var(--color-paper);
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
    border-radius: 0.75rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid var(--color-border);
}

.paginacion {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.pag-btn {
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pag-btn:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.pag-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pag-info {
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   SECCIONES ADICIONALES
   ============================================ */
.seccion {
    max-width: 1200px;
    margin: 0 auto 3rem;
    padding: 3rem 2rem;
    border-radius: 1rem;
    background: var(--color-paper);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.seccion+.seccion {
    margin-top: 1.5rem;
}

.seccion-intro {
    max-width: 720px;
    margin-bottom: 2rem;
}

.seccion-etiqueta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-primary);
    color: white;
    padding: 0.5rem 0.85rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.seccion-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.seccion-grid-2.reverse-grid {
    direction: rtl;
}

.seccion-grid-2.reverse-grid>* {
    direction: ltr;
}

.seccion-texto h2,
.seccion-intro h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.seccion-texto p,
.seccion-intro p {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.seccion-imagen {
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.seccion-imagen img {
    width: 100%;
    display: block;
    object-fit: cover;
    aspect-ratio: 4 / 3;
    transition: transform 0.4s ease;
}

.beneficios-lista {
    list-style: none;
    display: grid;
    gap: 1rem;
    margin: 1rem 0 0;
    padding: 0;
}

.beneficios-lista li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text);
}

.beneficios-lista li i {
    color: var(--color-primary);
}

.ofertas-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.oferta-card {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-cream) 100%);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--color-border);
}

.oferta-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.oferta-img {
    min-height: 220px;
    overflow: hidden;
}

.oferta-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

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

.oferta-body {
    padding: 1.5rem;
}

.oferta-body h3 {
    margin-bottom: 0.75rem;
    font-size: 1.15rem;
}

.oferta-body p {
    color: var(--color-text-light);
    margin-bottom: 1.25rem;
}

.oferta-badge {
    display: inline-flex;
    padding: 0.5rem 0.75rem;
    background: var(--color-accent);
    color: white;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.85rem;
}

.ubicacion-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: stretch;
    margin-top: 2rem;
}

.ubicacion-texto {
    background: linear-gradient(135deg, rgba(254, 247, 237, 0.9), rgba(254, 243, 199, 0.8));
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.ubicacion-texto h3 {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.ubicacion-texto p {
    margin-bottom: 1rem;
    color: var(--color-text-light);
    line-height: 1.8;
}

.ubicacion-mapa {
    display: flex;
    align-items: stretch;
    justify-content: center;
    width: 100%;
    background: var(--color-cream);
    border-radius: 1rem;
    padding: 1rem;
    border: 1px solid var(--color-border);
}

.ubicacion-mapa iframe {
    display: block;
    width: 100%;
    height: 420px;
    min-height: 420px;
    border-radius: 1rem;
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.25rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-secondary {
    background: var(--color-cream);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-accent);
    color: white;
}

.btn-maps {
    margin-top: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.btn-cotizar {
    margin-top: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.75s ease, transform 0.75s ease;
    will-change: opacity, transform;
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

.animate-fade-up,
.efecto-slide-up,
.libro-card,
.oferta-card,
.ubicacion-card,
.filtros-section,
.paginacion-section,
.footer,
.hero {
    opacity: 0;
    transform: translateY(20px);
}

.animate-fade-up.in-view,
.efecto-slide-up.in-view,
.libro-card.in-view,
.oferta-card.in-view,
.ubicacion-card.in-view,
.filtros-section.in-view,
.paginacion-section.in-view,
.footer.in-view,
.hero.in-view {
    animation: fadeInUp 1s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.efecto-zoom img,
.efecto-tilt img {
    transition: transform 0.8s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.efecto-zoom:hover img {
    transform: scale(1.04);
}

.efecto-tilt:hover img {
    transform: rotate(-0.5deg) scale(1.02);
}

.efecto-slide-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s cubic-bezier(0.25, 0.8, 0.25, 1) forwards;
}

.delay-1 {
    animation-delay: 0.15s;
}

.delay-2 {
    animation-delay: 0.3s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.footer {
    background: linear-gradient(135deg, var(--color-library-brown) 0%, var(--color-coffee) 100%);
    color: white;
    padding: 3rem 2rem 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
    color: white;
}

.footer-section p {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: inline-flex;
    width: 2.5rem;
    height: 2.5rem;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--color-accent);
    transform: translateY(-3px);
}

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer p,
.footer-bottom p {
    color: rgba(255, 255, 255, 0.9);
}


.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--color-paper);
    border-radius: 0.75rem;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 2px solid var(--color-border);
    box-shadow: var(--shadow-xl);
}

@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 85vh;
    }
}

@media (max-width: 480px) {
    .modal-content {
        width: 98%;
        max-height: 80vh;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--color-cream);
}

.modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 2rem;
}

@media (max-width: 768px) {
    .modal-body {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .modal-body {
        gap: 1rem;
        padding: 1rem;
    }
}

.modal-imagen {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-imagen img {
    width: 100%;
    height: 380px;
    object-fit: contain;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-lg);
}

.modal-info h2 {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.modal-categoria {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    font-weight: 600;
}

.modal-precio {
    margin: 1.5rem 0;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.modal-precio .etiqueta {
    font-weight: 600;
    color: var(--color-text-light);
}

.modal-precio .precio {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-accent);
}

.btn-comprar,
.btn-leer {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.btn-comprar {
    background: var(--color-accent);
    color: white;
}

.btn-comprar:hover {
    background: var(--color-coffee);
    transform: translateY(-2px);
}

.btn-leer {
    background: var(--color-coffee);
    color: white;
}

.btn-leer:hover {
    background: var(--color-library-brown);
    transform: translateY(-2px);
}

/* Cart Modal */
.cart-modal {
    max-width: 500px;
    padding: 2rem;
}

.cart-modal h2 {
    margin-bottom: 1rem;
    text-align: center;
}

.cart-items {
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: 1rem;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.cart-item-info h4 {
    margin: 0;
    font-size: 1rem;
}

.cart-item-info p {
    margin: 0.25rem 0;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.btn-remove {
    background: var(--color-secondary);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
}

.btn-remove:hover {
    background: var(--color-coffee);
}

.cart-total {
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--color-cream);
    border-radius: 0.5rem;
}

#btnComprar {
    width: 100%;
    padding: 1rem;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

#btnComprar:hover {
    background: var(--color-coffee);
    transform: translateY(-2px);
}

.purchase-message {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--color-success);
    color: white;
    border-radius: 0.5rem;
    text-align: center;
}

/* Notificación */
.notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-success);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    max-width: 300px;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Cotizacion Form */
.cotizacion-form {
    margin-top: 2rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.btn-cotizar {
    width: 100%;
    padding: 0.75rem;
    background: var(--color-accent);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.btn-cotizar:hover {
    background: var(--color-coffee);
    transform: translateY(-2px);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--color-success);
    color: white;
    border-radius: 0.5rem;
    text-align: center;
}

/* ============================================
   RESPONSIVE - TABLETS (1024px y menos)
   ============================================ */
@media (max-width: 1024px) {
    .seccion {
        padding: 3rem 1.5rem;
    }

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

    .ofertas-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .libros-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 1.5rem;
    }

    .libro-card {
        border-radius: 0.5rem;
    }
}

/* ============================================
   RESPONSIVE - MOBILES (768px y menos)
   ============================================ */
@media screen and (max-width: 768px) {
    .desktop-nav {
        display: none;
    }

    .mobile-menu {
        display: none;
    }

    .mobile-menu.active {
        display: flex !important;
    }

    .mobile-menu a {
        padding: 15px 25px;
        width: 100%;
        border-bottom: 1px solid #f0f0f0;
        text-align: left;
        box-sizing: border-box;
    }

    .btn-nav {
        background: none !important;
        color: rgba(255, 255, 255, 0.92) !important;
        border: none !important;
        padding: 15px 25px !important;
    }

    .logo h1 {
        font-size: 1.3rem;
    }

    .logo .tagline {
        font-size: 0.75rem;
    }

    .seccion {
        padding: 2rem 1rem;
    }

    .seccion-intro {
        margin-bottom: 1.5rem;
    }

    .seccion-intro h2 {
        font-size: 1.5rem;
    }

    .ubicacion-card {
        grid-template-columns: 1fr;
    }

    .ubicacion-mapa iframe {
        height: 300px;
    }

    .notification {
        max-width: 80%;
        padding: 1rem;
        font-size: 0.9rem;
    }
}


/* ============================================
   RESPONSIVE - SMALL PHONES (480px y menos)
   ============================================ */
@media (max-width: 480px) {
    .header {
        padding: 0.75rem 0;
    }

    .header-content {
        padding: 0 0.75rem;
        gap: 0.25rem;
    }

    .logo {
        gap: 8px;
    }

    .logo-img {
        height: 40px !important;
    }

    .logo h1 {
        font-size: 1rem;
    }

    .logo .tagline {
        font-size: 0.6rem;
    }

    .cart-toggle,
    .menu-toggle {
        font-size: 1.2rem;
        padding: 0.4rem;
    }

    .cart-count {
        width: 18px;
        height: 18px;
        font-size: 0.7rem;
    }

    .hero {
        padding: 1.5rem 1rem;
    }

    .hero-content h2 {
        font-size: 1.3rem;
    }

    .hero-content p {
        font-size: 0.9rem;
    }

    .seccion {
        padding: 1.5rem 0.75rem;
    }

    .seccion-intro h2 {
        font-size: 1.3rem;
    }

    .seccion-intro p {
        font-size: 0.9rem;
    }

    .libros-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .libro-card {
        border-radius: 0.4rem;
    }

    .libro-portada {
        height: 120px;
    }

    .libro-titulo {
        font-size: 0.75rem;
        min-height: 2rem;
    }

    .libro-autor {
        font-size: 0.7rem;
    }

    .libro-precio {
        font-size: 0.8rem;
    }

    .btn-small {
        font-size: 0.7rem;
        padding: 0.4rem 0.6rem;
    }

    .main-content {
        padding: 0 0.75rem 1.5rem;
    }

    .filtros-section {
        padding: 0.75rem;
        margin-bottom: 1rem;
    }

    .input-busqueda {
        font-size: 0.9rem;
        padding: 0.6rem;
    }

    .paginacion {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .pag-btn {
        font-size: 0.8rem;
        padding: 0.5rem 0.75rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: 0.6rem 1rem;
    }

    .cotizacion-form {
        margin-top: 1.5rem;
    }

    .form-group input,
    .form-group textarea {
        font-size: 16px;
    }

    .ubicacion-mapa iframe {
        height: 250px;
    }

    .footer {
        padding: 1.5rem 0.75rem;
    }

    .footer-content {
        padding: 0 0.75rem;
        gap: 1.5rem;
    }

    .social-links {
        gap: 0.75rem;
    }

    .notification {
        width: 90%;
        padding: 0.8rem 1rem;
        font-size: 0.85rem;
    }

    .cart-modal {
        max-width: 95%;
    }

    .cart-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 0.75rem;
    }

    .btn-remove {
        width: 100%;
        margin-top: 0.5rem;
    }
}

/* ============================================
   UTILIDADES
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-dark);
}

/* Sin resultados */
.sin-resultados {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-light);
}

.sin-resultados i {
    font-size: 3rem;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.sin-resultados h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

/* ============================================
   AUTENTICACIÓN
   ============================================ */
.login-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.login-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
}

.auth-modal {
    max-width: 400px !important;
    z-index: 2001 !important;
    position: relative;
}

#authModal {
    z-index: 2000 !important;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1.5rem;
}

.auth-tab {
    flex: 1;
    padding: 1rem;
    border: none;
    background: none;
    cursor: pointer;
    font-weight: 600;
    color: var(--color-text-light);
    transition: var(--transition);
}

.auth-tab.active {
    color: var(--color-primary);
    border-bottom: 3px solid var(--color-primary);
}

.auth-form h3 {
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--color-text);
}

.auth-form .form-group {
    margin-bottom: 1.25rem;
}

.auth-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.auth-form input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 0.5rem;
    font-size: 1rem;
}

.auth-form input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

@media (max-width: 480px) {
    .login-toggle span {
        display: none;
    }

    .login-toggle {
        padding: 0.5rem;
    }
}