/* Custom properties / Design tokens */
:root {
    --bg-color: #0d1117;
    --text-main: #f0f6fc;
    --text-muted: #8b949e;
    --primary: #c9a227; /* Golden tone for premium feel */
    --primary-hover: #b08d22;
    --card-bg: rgba(22, 27, 34, 0.6);
    --border-color: rgba(240, 246, 252, 0.1);
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Blobs for Background - Glassmorphism base */
.blob {
    position: absolute;
    filter: blur(100px);
    z-index: -1;
    border-radius: 50%;
    opacity: 0.5;
}
.blob-1 {
    width: 40vw;
    height: 40vw;
    background: radial-gradient(circle, rgba(201,162,39,0.15) 0%, rgba(13,17,23,0) 70%);
    top: -10vw;
    left: -10vw;
}
.blob-2 {
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(46,76,145,0.15) 0%, rgba(13,17,23,0) 70%);
    bottom: 20%;
    right: -20vw;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--text-main);
    font-weight: 600;
}

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

ul {
    list-style: none;
}

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

.section-margin {
    margin-top: 6rem;
    margin-bottom: 6rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--primary);
    border-radius: 3px;
}

/* Buttons */
.btn-primary {
    display: inline-block;
    background-color: var(--primary);
    color: #fff;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    font-family: var(--font-heading);
    box-shadow: 0 4px 15px rgba(201, 162, 39, 0.3);
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(201, 162, 39, 0.4);
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(13, 17, 23, 0.8);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    gap: 4rem;
    padding-top: 5rem; /* offset header */
}

.hero-content h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1rem;
    color: #fff;
    background: linear-gradient(135deg, #fff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content .subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.social-links i {
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: var(--transition);
}

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

.hero-image-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    aspect-ratio: 3/4;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-image-container::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    pointer-events: none;
}

/* Biografía Section */
.bio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.bio-text p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: #cbd5e1;
}

.bio-images {
    position: relative;
    height: 500px;
}

.bio-img {
    position: absolute;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
}

.bio-img.img-1 {
    width: 60%;
    bottom: 0;
    left: 0;
    z-index: 2;
}

.bio-img.img-2 {
    width: 55%;
    top: 20px;
    right: 0;
    z-index: 1;
}

/* Obras Section */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.book-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
}

.book-card:hover {
    transform: translateY(-5px);
    border-color: rgba(201, 162, 39, 0.3);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.book-cover-container {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 2/3;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.book-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.book-overlay {
    position: absolute;
    inset: 0;
    background: rgba(13, 17, 23, 0.95);
    backdrop-filter: blur(5px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 1.5rem;
    opacity: 0;
    transition: all 0.4s ease;
    text-align: center;
}

.book-card:hover .book-overlay {
    opacity: 1;
}

.book-synopsis {
    color: #e6edf3;
    font-size: 0.85rem;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.4s ease 0.1s;
    /* Limitamos el número de líneas */
    display: -webkit-box;
    line-clamp: 7;
    -webkit-line-clamp: 7;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

.book-card:hover .book-synopsis {
    transform: translateY(0);
    opacity: 1;
}

.book-card:hover .book-cover {
    transform: scale(1.05);
}

.buy-btn {
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transform: translateY(20px);
    transition: var(--transition);
}

.buy-btn i {
    font-size: 1.2rem;
}

.book-card:hover .buy-btn {
    transform: translateY(0);
}
.buy-btn:hover {
    background-color: var(--primary-hover);
}

.book-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.book-info .year {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--primary);
    margin-right: 0.5rem;
}

.book-info .genre {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Newsletter Section */
.newsletter-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 4rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    max-width: 800px;
    margin: 0 auto;
}

.newsletter-box h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.newsletter-box p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 700px;
    margin: 0 auto;
    justify-content: center;
}

.newsletter-form input {
    flex: 1;
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    border: 1px solid var(--border-color);
    background: rgba(13, 17, 23, 0.8);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.newsletter-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(201, 162, 39, 0.2);
}

@media (max-width: 768px) {
    .newsletter-form {
        flex-direction: column;
        max-width: 100%;
        padding: 0 20px;
    }
}

#success-message.sib-form-message-panel--active, 
#error-message.sib-form-message-panel--active {
    display: block !important;
}

/* Footer Section */
.footer {
    border-top: 1px solid var(--border-color);
    margin-top: 6rem;
    background-color: rgba(13, 17, 23, 0.6);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4rem 2rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-muted);
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}
.footer-social i {
    font-size: 1.2rem;
}

.footer-social a:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Contact Section */
.contact-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    max-width: 600px;
    margin: 0 auto;
}

.contact-box p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 600;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.contact-email i {
    font-size: 1.8rem;
}

.contact-email:hover {
    color: var(--text-main);
    background: rgba(201, 162, 39, 0.1);
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .contact-email {
        font-size: 1.1rem;
    }
}

/* Animations */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in {
    opacity: 0;
    transition: opacity 1.2s ease-out;
}

.fade-up.visible, .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive Media Queries */
@media (max-width: 992px) {
    .hero, .bio-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 3rem;
    }
    .section-title {
        left: auto;
        transform: none;
    }
    .section-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    .social-links {
        justify-content: center;
    }
    .bio-images {
        height: 400px;
        margin-top: 2rem;
    }
    .bio-img.img-1 { width: 70%; left: 15%; }
    .bio-img.img-2 { display: none; } /* simplify on mobile */
    .hero {
        padding-top: 8rem;
    }
}

@media (max-width: 576px) {
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    .nav-links {
        display: none; /* simple hidden on very small, we could add hamburger but fine for now */
    }
}