/* ============================================
   NATALIA AROS M. — landing simple
   ============================================ */
:root {
    --primary:    #0B3D4E;
    --accent:     #E8913A;
    --tech:       #4DA8C4;
    --light:      #FAFAF7;
    --dark:       #2D2D2D;
    --muted:      #6B7280;
    --white:      #FFFFFF;
    --border:     #E5E0D8;

    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body:    'Plus Jakarta Sans', system-ui, sans-serif;

    --space-sm: 0.75rem;
    --space-md: 1.25rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;

    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-full: 9999px;

    --shadow-md: 0 8px 28px rgba(11,61,78,0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font-body);
    color: var(--dark);
    background-color: var(--light);
    line-height: 1.7;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color var(--transition); }
ul { list-style: none; }
img { display: block; max-width: 100%; height: auto; }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; color: var(--primary); }
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }

p { margin-bottom: var(--space-md); color: var(--dark); }
p:last-child { margin-bottom: 0; }

.container {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}
@media (max-width: 640px) { .container { padding: 0 var(--space-md); } }

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--space-sm);
}

section { padding: var(--space-2xl) 0; }

/* HEADER */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(250, 250, 247, 0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}
.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.25rem;
}
.logo { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-display); font-size: 1.15rem; color: var(--primary); }
.logo-monogram {
    display: grid;
    place-items: center;
    width: 2.1rem;
    height: 2.1rem;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: var(--accent);
    font-size: 0.95rem;
    font-weight: 700;
}
.nav-menu { display: flex; gap: var(--space-lg); font-size: 0.95rem; font-weight: 500; }
.nav-menu a:hover { color: var(--accent); }
@media (max-width: 640px) { .nav-menu { display: none; } }

/* HERO */
.hero {
    position: relative;
    padding: var(--space-2xl) 0;
    background: var(--primary);
    color: var(--light);
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: url('../assets/img/hero-bg.jpg') center / cover no-repeat;
    opacity: 0.5;
}
.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(11,61,78,0.96) 20%, rgba(11,61,78,0.55) 75%);
}
.hero-inner {
    position: relative;
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: var(--space-xl);
    align-items: center;
}
@media (max-width: 800px) { .hero-inner { grid-template-columns: 1fr; } }

.hero-badge {
    display: inline-block;
    padding: 0.35rem 0.9rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(250,250,247,0.35);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeUp 0.7s ease forwards;
}
.hero h1 { color: var(--white); opacity: 0; animation: fadeUp 0.7s ease 0.1s forwards; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero-subtitle {
    color: rgba(250,250,247,0.85);
    font-size: 1.1rem;
    max-width: 34rem;
    margin-top: var(--space-md);
    opacity: 0;
    animation: fadeUp 0.7s ease 0.2s forwards;
}
.hero-ctas {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-top: var(--space-lg);
    opacity: 0;
    animation: fadeUp 0.7s ease 0.3s forwards;
}

.hero-photo {
    position: relative;
    justify-self: center;
    opacity: 0;
    animation: fadeUp 0.8s ease 0.25s forwards;
}
.photo-frame {
    width: 100%;
    max-width: 300px;
    aspect-ratio: 4/5;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 3px solid rgba(250,250,247,0.25);
    box-shadow: var(--shadow-md);
}
.photo-frame img { width: 100%; height: 100%; object-fit: cover; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.85rem 1.6rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}
.btn-primary { background: var(--accent); color: var(--primary); }
.btn-primary:hover { background: #f0a256; transform: translateY(-2px); }
.btn-secondary { border: 1px solid rgba(250,250,247,0.4); color: var(--light); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* SOBRE MI */
.about-text { max-width: 46rem; }
.about-text p { font-size: 1.05rem; }

/* LIBROS */
.libros { background: var(--white); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.book-card {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: var(--space-xl);
    align-items: center;
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
}
@media (max-width: 700px) { .book-card { grid-template-columns: 1fr; } }

.book-cover-mock {
    aspect-ratio: 3/4.6;
    border-radius: var(--radius-md);
    background: linear-gradient(155deg, var(--primary) 0%, #0f4d63 100%);
    color: var(--light);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    justify-self: center;
    width: 100%;
    max-width: 220px;
}
.book-cover-mock::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -30%;
    width: 70%;
    height: 70%;
    background: radial-gradient(circle, rgba(232,145,58,0.35), transparent 70%);
}
.book-cover-eyebrow { font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.book-cover-title { font-family: var(--font-display); font-size: 1.5rem; line-height: 1.2; margin: 0.6rem 0 0; }
.book-cover-author { font-size: 0.8rem; color: rgba(250,250,247,0.75); margin-top: var(--space-md); }

.book-status {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--primary);
    background: rgba(11,61,78,0.08);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
}
.book-subtitle { color: var(--muted); font-style: italic; margin-bottom: var(--space-md); }
.book-cta { margin-top: var(--space-md); }

/* PAGINA /libro — datos actualizados */
.updates-hero { background: var(--primary); color: var(--light); padding: var(--space-xl) 0; }
.back-link { display: inline-flex; align-items: center; gap: 0.4rem; color: rgba(250,250,247,0.85); font-size: 0.9rem; margin-bottom: var(--space-md); }
.back-link:hover { color: var(--accent); }
.updates-hero h1 { color: var(--white); }
.updates-hero p { color: rgba(250,250,247,0.85); margin-top: var(--space-sm); max-width: 40rem; }

.update-block { padding: var(--space-xl) 0; border-bottom: 1px solid var(--border); }
.update-block:last-of-type { border-bottom: none; }
.update-meta { font-size: 0.82rem; color: var(--muted); font-style: italic; margin-bottom: var(--space-md); }

.model-list { display: grid; gap: var(--space-md); margin-top: var(--space-md); }
.model-item {
    display: grid;
    grid-template-columns: 9rem 1fr;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}
@media (max-width: 560px) { .model-item { grid-template-columns: 1fr; } }
.model-name { font-family: var(--font-display); color: var(--primary); font-size: 1.05rem; }

.price-summary { display: flex; gap: var(--space-lg); flex-wrap: wrap; margin: var(--space-md) 0 var(--space-lg); }
.price-tile { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: var(--space-md) var(--space-lg); }
.price-tile .price-value { font-family: var(--font-display); font-size: 1.6rem; color: var(--primary); }
.price-tile .price-label { font-size: 0.85rem; color: var(--muted); }

.tax-table { width: 100%; border-collapse: collapse; margin-top: var(--space-sm); background: var(--white); border-radius: var(--radius-md); overflow: hidden; }
.tax-table th, .tax-table td { text-align: left; padding: 0.7rem 1rem; border-bottom: 1px solid var(--border); font-size: 0.95rem; }
.tax-table th { background: rgba(11,61,78,0.06); color: var(--primary); font-weight: 700; }
.tax-table tr:last-child td { border-bottom: none; }
.tax-table-wrap { overflow-x: auto; }

.download-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-top: var(--space-md);
}

.updates-footnote { text-align: center; color: var(--muted); font-size: 0.9rem; margin-top: var(--space-lg); }

/* CONTACTO */
.contact-inner { text-align: center; max-width: 40rem; margin: 0 auto; }
.contact-links {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-top: var(--space-lg);
}
.contact-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.3rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.92rem;
    background: var(--white);
}
.contact-link:hover { border-color: var(--accent); color: var(--accent); }

/* FOOTER */
.footer { padding: var(--space-lg) 0; text-align: center; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--border); }

/* REVEAL ON SCROLL */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }