/* ═══════════════════════════════════════
   Aíram Nidluam — Author Website
   Trilogía del Cerebro Amplificado
   ═══════════════════════════════════════ */

:root {
    --gold: #C8A96E;
    --gold-light: #E8D5A8;
    --navy: #1B2A4A;
    --navy-light: #2A3F6A;
    --cream: #FDF8F0;
    --warm-white: #FFFCF7;
    --text: #2C2C2C;
    --text-light: #6B6B6B;
    --book1: #D4956A;
    --book2: #6A9FB5;
    --book3: #7AAE6A;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
    --radius: 12px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Source Sans 3', -apple-system, sans-serif;
    color: var(--text);
    line-height: 1.7;
    background: var(--warm-white);
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', Georgia, serif;
    line-height: 1.3;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ── Navigation ── */
#nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

#nav.scrolled {
    background: rgba(27, 42, 74, 0.97);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    color: white;
    text-decoration: none;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo-img {
    height: 36px;
    width: auto;
    filter: invert(1);
    border-radius: 4px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: var(--transition);
    letter-spacing: 0.3px;
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ── Hero ── */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 50%, #3A5A8A 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(200,169,110,0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(200,169,110,0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 2;
    padding: 0 24px;
}

.hero-subtitle {
    color: var(--gold-light);
    font-size: 1.1rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-weight: 300;
}

.hero h1 {
    color: white;
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-tagline {
    color: rgba(255,255,255,0.8);
    font-size: 1.2rem;
    margin-bottom: 40px;
    font-weight: 300;
    font-style: italic;
}

/* ── Buttons ── */
.btn {
    display: inline-block;
    padding: 14px 36px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--gold-light);
    color: var(--navy);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(200,169,110,0.4);
}

.btn-book {
    background: transparent;
    color: var(--navy);
    border: 2px solid var(--navy);
    padding: 10px 28px;
}

.btn-book:hover {
    background: var(--navy);
    color: white;
    transform: translateY(-2px);
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.85rem;
    background: var(--gold);
    color: white;
    border-radius: 6px;
}

/* ── Mission ── */
.mission {
    background: var(--cream);
    padding: 80px 0;
    text-align: center;
}

.mission blockquote {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-style: italic;
    color: var(--navy);
    max-width: 800px;
    margin: 0 auto 16px;
    line-height: 1.6;
}

.mission-author {
    color: var(--gold);
    font-weight: 600;
    font-size: 1rem;
}

/* ── Books Section ── */
.books {
    padding: 100px 0;
    background: var(--warm-white);
}

.books h2 {
    text-align: center;
    font-size: 2.4rem;
    color: var(--navy);
    margin-bottom: 12px;
}

.section-intro {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 650px;
    margin: 0 auto 60px;
}

.books-grid {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.book-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 48px;
    align-items: center;
    opacity: 0;
    transform: translateY(30px);
    transition: 0.6s ease;
}

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

.book-card.reverse {
    grid-template-columns: 1fr 300px;
}

.book-card.reverse .book-cover {
    order: 2;
}

.book-card.reverse .book-info {
    order: 1;
}

.book-cover {
    aspect-ratio: 2/3;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

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

.book-cover:hover {
    transform: translateY(-8px) rotate(-1deg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
}

.book-gluten {
    background: linear-gradient(160deg, #E8C170 0%, #C8943E 40%, #8B6914 100%);
}

.book-ajedrez {
    background: linear-gradient(160deg, #5C6BC0 0%, #3949AB 40%, #1A237E 100%);
}

.book-damas {
    background: linear-gradient(160deg, #CE4257 0%, #A3243B 40%, #6E1528 100%);
}

.book-invernadero {
    background: linear-gradient(160deg, #66BB6A 0%, #43A047 40%, #1B5E20 100%);
}

.book-oveja {
    background: linear-gradient(160deg, #424242 0%, #212121 40%, #000000 100%);
}

.book-cover-inner {
    text-align: center;
    padding: 30px;
    color: white;
}

.book-number {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    border: 1px solid rgba(255,255,255,0.5);
    padding: 4px 16px;
    border-radius: 20px;
    margin-bottom: 20px;
}

.book-cover-inner h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
    line-height: 1.3;
}

.book-cover-subtitle {
    font-size: 0.85rem;
    font-style: italic;
    opacity: 0.9;
}

.book-info h3 {
    font-size: 1.6rem;
    color: var(--navy);
    margin-bottom: 8px;
}

.book-theme {
    color: var(--gold);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.book-info p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1.02rem;
}

.book-features {
    list-style: none;
    margin-bottom: 24px;
}

.book-features li {
    padding: 6px 0 6px 24px;
    position: relative;
    color: var(--text);
    font-size: 0.95rem;
}

.book-features li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--gold);
    font-weight: 700;
}

.book-isbn {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 16px;
}

/* ── About ── */
.about {
    padding: 100px 0;
    background: var(--cream);
}

.about-grid {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 60px;
    align-items: center;
}

.about-placeholder {
    width: 100%;
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.5);
    font-style: italic;
    box-shadow: var(--shadow-lg);
}

.about-photo {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

.pseudonym-note {
    color: var(--gold) !important;
    font-size: 1rem;
    margin-bottom: 20px;
}

.contact-email {
    margin-bottom: 24px;
}

.contact-email h4 {
    color: var(--navy);
    margin-bottom: 6px;
}

.contact-email a {
    color: var(--gold);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 600;
    transition: var(--transition);
}

.contact-email a:hover {
    color: var(--navy);
}

.about-text h2 {
    font-size: 2.2rem;
    color: var(--navy);
    margin-bottom: 24px;
}

.about-text p {
    margin-bottom: 18px;
    color: var(--text-light);
    font-size: 1.05rem;
}

.about-text strong {
    color: var(--navy);
}

/* ── Philosophy / Trilogy ── */
.philosophy {
    padding: 100px 0;
    background: var(--warm-white);
}

.philosophy h2 {
    text-align: center;
    font-size: 2.4rem;
    color: var(--navy);
    margin-bottom: 12px;
}

.pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 36px;
    margin-bottom: 80px;
    margin-top: 20px;
}

.pillar {
    text-align: center;
    padding: 40px 28px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.pillar.visible {
    opacity: 1;
    transform: translateY(0);
}

.pillar:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.pillar-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.pillar h3 {
    font-size: 1.3rem;
    color: var(--navy);
    margin-bottom: 12px;
}

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

.pillar-book {
    display: inline-block;
    margin-top: 16px;
    font-size: 0.8rem;
    color: var(--gold);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.approach {
    background: var(--navy);
    border-radius: var(--radius);
    padding: 60px;
    color: white;
}

.approach h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 40px;
    color: var(--gold-light);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
}

.approach-item {
    opacity: 0;
    transform: translateY(20px);
    transition: 0.5s ease;
}

.approach-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.approach-item h4 {
    color: var(--gold-light);
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.approach-item p {
    color: rgba(255,255,255,0.75);
    font-size: 0.95rem;
}

/* ── Testimonial ── */
.testimonial {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
    text-align: center;
}

.testimonial blockquote {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    font-style: italic;
    color: white;
    max-width: 800px;
    margin: 0 auto 20px;
    line-height: 1.6;
}

.testimonial-source {
    color: var(--gold-light);
    font-size: 0.95rem;
}

/* ── For Who ── */
.for-who {
    padding: 100px 0;
    background: var(--cream);
}

.for-who h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--navy);
    margin-bottom: 48px;
}

.for-who-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.for-who-item {
    text-align: center;
    padding: 32px 20px;
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.for-who-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.for-who-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.for-who-item h4 {
    color: var(--navy);
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.for-who-item p {
    color: var(--text-light);
    font-size: 0.92rem;
}

/* ── Contact ── */
.contact {
    padding: 100px 0;
    background: var(--warm-white);
}

.contact h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--navy);
    margin-bottom: 12px;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-top: 20px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--navy);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(200,169,110,0.15);
}

.contact-info h3 {
    color: var(--navy);
    font-size: 1.4rem;
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-light);
    margin-bottom: 24px;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-bottom: 36px;
}

.social-link {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--navy);
    border-radius: 6px;
    color: var(--navy);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--navy);
    color: white;
}

.newsletter {
    background: var(--cream);
    padding: 28px;
    border-radius: var(--radius);
}

.newsletter h4 {
    color: var(--navy);
    margin-bottom: 8px;
}

.newsletter p {
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}

.newsletter-form input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 0.9rem;
}

/* ── Footer ── */
footer {
    background: var(--navy);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.footer-links h4 {
    color: var(--gold-light);
    font-size: 0.95rem;
    margin-bottom: 16px;
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 600;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    padding: 4px 0;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--gold-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
    font-size: 0.85rem;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .book-card,
    .book-card.reverse {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .book-card.reverse .book-cover,
    .book-card.reverse .book-info {
        order: unset;
    }

    .book-cover {
        max-width: 280px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-placeholder {
        max-width: 300px;
        margin: 0 auto;
    }

    .about-photo {
        max-width: 300px;
        margin: 0 auto;
        display: block;
    }

    .pillars {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .approach-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .approach {
        padding: 40px 28px;
    }

    .for-who-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media (max-width: 600px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--navy);
        flex-direction: column;
        padding: 20px 24px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .for-who-grid {
        grid-template-columns: 1fr;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .social-links {
        flex-wrap: wrap;
    }
}