/* ============================================
   IYBS.org — Institute of Your Best Self
   Global Stylesheet
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600;1,700&family=Source+Sans+3:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --teal-deep: #1a5c57;
  --teal: #267a73;
  --teal-light: #339e95;
  --teal-pale: #e8f5f3;
  --cream: #faf7f2;
  --cream-dark: #f0ebe3;
  --warm-white: #fffcf8;
  --gold: #c8a45e;
  --gold-light: #e8d5a3;
  --terracotta: #c4705a;
  --charcoal: #2c2c2c;
  --gray-dark: #4a4a4a;
  --gray: #7a7a7a;
  --gray-light: #b8b8b8;
  --gray-pale: #e8e4df;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Source Sans 3', 'Segoe UI', sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-xxl: 8rem;
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-fast: 0.2s var(--ease-out);
  --transition-base: 0.4s var(--ease-out);
  --transition-slow: 0.7s var(--ease-out);
}

*, *::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-sans); font-weight:400; line-height:1.7; color:var(--charcoal); background:var(--warm-white); overflow-x:hidden; }
img { max-width:100%; height:auto; display:block; }
a { color:var(--teal); text-decoration:none; transition:color var(--transition-fast); }
a:hover { color:var(--teal-deep); }
h1,h2,h3,h4,h5,h6 { font-family:var(--font-serif); font-weight:600; line-height:1.2; color:var(--charcoal); }
h1 { font-size:clamp(2.2rem,5vw,3.8rem); }
h2 { font-size:clamp(1.8rem,3.5vw,2.8rem); }
h3 { font-size:clamp(1.3rem,2.5vw,1.8rem); }
p { margin-bottom:1.2em; font-size:1.05rem; color:var(--gray-dark); }

.container { width:90%; max-width:var(--max-width); margin:0 auto; }
.container--narrow { max-width:var(--max-width-narrow); }
.skip-link { position:absolute; top:-100%; left:0; background:var(--teal-deep); color:#fff; padding:0.8rem 1.5rem; z-index:10000; font-weight:600; }
.skip-link:focus { top:0; }

/* HEADER */
.site-header { position:fixed; top:0; left:0; right:0; z-index:1000; background:rgba(255,252,248,0.92); backdrop-filter:blur(12px); -webkit-backdrop-filter:blur(12px); border-bottom:1px solid rgba(0,0,0,0.06); transition:background var(--transition-base),box-shadow var(--transition-base); }
.site-header.scrolled { background:rgba(255,252,248,0.97); box-shadow:0 2px 20px rgba(0,0,0,0.06); }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px; }
.logo { font-family:var(--font-serif); font-size:1.3rem; font-weight:700; color:var(--teal-deep); letter-spacing:-0.02em; text-decoration:none; }
.logo:hover { opacity:0.8; color:var(--teal-deep); }
.logo span { font-weight:400; color:var(--gray); }
.main-nav { display:flex; align-items:center; gap:2.2rem; list-style:none; }
.main-nav a { font-size:0.95rem; font-weight:500; color:var(--gray-dark); position:relative; padding:0.3rem 0; }
.main-nav a::after { content:''; position:absolute; bottom:0; left:0; width:0; height:2px; background:var(--teal); transition:width var(--transition-base); }
.main-nav a:hover::after, .main-nav a.active::after { width:100%; }
.main-nav a:hover { color:var(--teal-deep); }

.hamburger { display:none; flex-direction:column; justify-content:center; gap:5px; width:28px; height:28px; cursor:pointer; background:none; border:none; padding:0; }
.hamburger span { display:block; width:100%; height:2px; background:var(--charcoal); transition:transform var(--transition-fast),opacity var(--transition-fast); }
.hamburger.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

.mobile-nav-overlay { position:fixed; inset:0; background:rgba(0,0,0,0.3); z-index:998; opacity:0; pointer-events:none; transition:opacity var(--transition-base); display:none; }
.mobile-nav-overlay.active { opacity:1; pointer-events:auto; }
.mobile-nav { display:none; position:fixed; top:0; right:-300px; width:280px; height:100vh; background:var(--warm-white); z-index:999; padding:100px 2rem 2rem; transition:right var(--transition-base); box-shadow:-4px 0 30px rgba(0,0,0,0.1); }
.mobile-nav.active { right:0; }
.mobile-nav ul { list-style:none; display:flex; flex-direction:column; gap:1.5rem; }
.mobile-nav a { font-family:var(--font-serif); font-size:1.3rem; color:var(--charcoal); display:block; padding:0.3rem 0; border-bottom:1px solid var(--gray-pale); }

/* HERO */
.hero { position:relative; min-height:85vh; display:flex; align-items:center; overflow:hidden; padding-top:72px; }
.hero--home { background:linear-gradient(160deg,var(--teal-deep) 0%,#1a4a47 40%,#1d3d3a 100%); min-height:90vh; }
.hero--page { background:linear-gradient(160deg,var(--teal-deep) 0%,#1a4a47 100%); min-height:55vh; }
.hero__bg-pattern { position:absolute; inset:0; opacity:0.04; background-image:radial-gradient(circle at 25% 25%,#fff 1px,transparent 1px),radial-gradient(circle at 75% 75%,#fff 1px,transparent 1px); background-size:60px 60px; pointer-events:none; }
.hero__content { position:relative; z-index:2; max-width:720px; }
.hero__title { font-family:var(--font-serif); font-size:clamp(2.5rem,6vw,4.2rem); font-weight:700; font-style:italic; color:#fff; line-height:1.15; margin-bottom:1.5rem; }
.hero__subtitle { font-family:var(--font-sans); font-size:clamp(1rem,2vw,1.2rem); font-weight:300; color:rgba(255,255,255,0.8); line-height:1.8; max-width:600px; }

.hero__covers { position:absolute; right:-2%; top:50%; transform:translateY(-50%); width:420px; height:500px; pointer-events:none; z-index:1; }
.hero__cover-float { position:absolute; border-radius:6px; box-shadow:0 20px 60px rgba(0,0,0,0.3); }
.hero__cover-float:nth-child(1) { width:160px; top:0; left:0; transform:rotate(-6deg); }
.hero__cover-float:nth-child(2) { width:180px; top:60px; left:180px; transform:rotate(4deg); }
.hero__cover-float:nth-child(3) { width:150px; top:260px; left:60px; transform:rotate(-3deg); }

/* SECTIONS */
.section { padding:var(--space-xl) 0; }
.section--cream { background:var(--cream); }
.section--teal { background:var(--teal-deep); color:#fff; }
.section--teal h2,.section--teal h3 { color:#fff; }
.section--teal p { color:rgba(255,255,255,0.85); }
.section__title { text-align:center; margin-bottom:var(--space-lg); }
.section__title h2 { margin-bottom:0.5rem; }
.section__title p { font-size:1.1rem; color:var(--gray); max-width:600px; margin:0 auto; }

/* MISSION */
.mission { text-align:center; padding:var(--space-xl) 0; }
.mission__text { font-family:var(--font-serif); font-size:clamp(1.3rem,2.5vw,1.8rem); font-weight:400; line-height:1.6; color:var(--charcoal); max-width:700px; margin:0 auto; }
.mission__text em { color:var(--teal); font-style:italic; }

/* AREAS */
.areas { display:flex; flex-wrap:wrap; justify-content:center; gap:0; max-width:900px; margin:0 auto; }
.area-item { flex:1 1 auto; text-align:center; padding:var(--space-md); position:relative; }
.area-item__icon { width:48px; height:48px; margin:0 auto var(--space-sm); color:var(--teal); }
.area-item__icon svg { width:100%; height:100%; stroke:var(--teal); stroke-width:1.5; fill:none; }
.area-item__title { font-family:var(--font-serif); font-size:1.1rem; font-weight:600; color:var(--charcoal); margin-bottom:0.3rem; }
.area-item__line { width:30px; height:2px; background:var(--gold); margin:0.8rem auto 0; transition:width var(--transition-base); }
.area-item:hover .area-item__line { width:60px; }

/* MANIFESTO */
.manifesto { position:relative; padding:var(--space-xxl) 0; background:var(--teal-deep); overflow:hidden; }
.manifesto::before { content:'\201C'; position:absolute; top:-30px; left:5%; font-family:var(--font-serif); font-size:20rem; color:rgba(255,255,255,0.04); line-height:1; pointer-events:none; }
.manifesto__text { font-family:var(--font-serif); font-size:clamp(1.4rem,3vw,2rem); font-weight:400; font-style:italic; color:#fff; line-height:1.6; text-align:center; max-width:750px; margin:0 auto; }

/* CTA */
.cta-section { text-align:center; padding:var(--space-xl) 0; }

/* BUTTONS */
.btn { display:inline-block; font-family:var(--font-sans); font-size:1rem; font-weight:600; padding:0.9rem 2.2rem; border-radius:50px; border:none; cursor:pointer; transition:all var(--transition-base); text-decoration:none; letter-spacing:0.02em; }
.btn--primary { background:var(--teal); color:#fff; }
.btn--primary:hover { background:var(--teal-deep); color:#fff; transform:translateY(-2px); box-shadow:0 8px 25px rgba(26,92,87,0.3); }
.btn--outline { background:transparent; color:var(--teal); border:2px solid var(--teal); }
.btn--outline:hover { background:var(--teal); color:#fff; }
.btn--white { background:#fff; color:var(--teal-deep); }
.btn--white:hover { background:var(--cream); color:var(--teal-deep); transform:translateY(-2px); box-shadow:0 8px 25px rgba(0,0,0,0.15); }
.btn--arrow::after { content:' \2192'; display:inline-block; }

/* CATÁLOGO */
.catalogo-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(180px,1fr)); gap:var(--space-md); margin-bottom:var(--space-lg); }
.book-item { text-align:center; text-decoration:none; color:var(--charcoal); display:block; transition:transform var(--transition-base); }
.book-item:hover { transform:translateY(-6px); color:var(--charcoal); }
.book-item__cover { position:relative; overflow:hidden; border-radius:4px; margin-bottom:0.8rem; box-shadow:0 4px 15px rgba(0,0,0,0.1); transition:box-shadow var(--transition-base); aspect-ratio:2/3; }
.book-item:hover .book-item__cover { box-shadow:0 12px 35px rgba(0,0,0,0.18); }
.book-item__cover img { width:100%; height:100%; object-fit:cover; transition:transform var(--transition-slow); }
.book-item:hover .book-item__cover img { transform:scale(1.03); }
.book-item__title { font-family:var(--font-serif); font-size:0.95rem; font-weight:600; line-height:1.3; padding:0 0.3rem; }

.pagination { display:flex; justify-content:center; gap:0.5rem; margin-top:var(--space-lg); }
.pagination a,.pagination span { display:inline-flex; align-items:center; justify-content:center; width:44px; height:44px; border-radius:50%; font-weight:600; font-size:0.95rem; text-decoration:none; transition:all var(--transition-fast); }
.pagination a { color:var(--gray-dark); border:2px solid var(--gray-pale); }
.pagination a:hover { border-color:var(--teal); color:var(--teal); }
.pagination .current { background:var(--teal); color:#fff; border:2px solid var(--teal); }

/* BOOK DETAIL */
.book-detail { display:grid; grid-template-columns:1fr 1.4fr; gap:var(--space-lg); align-items:start; padding:var(--space-lg) 0; }
.book-detail__cover { position:sticky; top:100px; }
.book-detail__cover img { width:100%; max-width:380px; border-radius:6px; box-shadow:0 15px 50px rgba(0,0,0,0.15); }
.book-detail__info { padding-top:var(--space-sm); }
.book-detail__title { font-size:clamp(1.8rem,3.5vw,2.6rem); margin-bottom:0.8rem; line-height:1.2; }
.book-detail__meta { display:flex; gap:var(--space-md); margin-bottom:var(--space-md); font-size:0.95rem; color:var(--gray); }
.book-detail__meta span { display:flex; align-items:center; gap:0.4rem; }
.book-detail__description { font-size:1.1rem; line-height:1.8; color:var(--gray-dark); margin-bottom:var(--space-md); }
.book-detail__cta { margin-top:var(--space-md); }
.book-detail__back { display:inline-flex; align-items:center; gap:0.4rem; font-size:0.95rem; color:var(--gray); margin-bottom:var(--space-md); }
.book-detail__back:hover { color:var(--teal); }

/* CONTACT */
.contact-grid { display:grid; grid-template-columns:1fr 1fr; gap:var(--space-lg); max-width:800px; margin:0 auto; }
.contact-block { margin-bottom:var(--space-md); }
.contact-block__title { font-family:var(--font-serif); font-size:1.2rem; font-weight:600; margin-bottom:0.5rem; }
.contact-block__text { color:var(--gray-dark); line-height:1.7; }
.contact-email { font-size:1.3rem; font-weight:600; color:var(--teal); border-bottom:2px solid var(--teal-pale); padding-bottom:2px; transition:border-color var(--transition-fast); }
.contact-email:hover { border-color:var(--teal); }

/* ABOUT */
.about-content { max-width:750px; margin:0 auto; }
.about-content p { font-size:1.1rem; line-height:1.9; margin-bottom:1.8rem; }
.about-content p:first-of-type::first-line { font-weight:600; color:var(--charcoal); }
.about-highlight { font-family:var(--font-serif); font-size:1.4rem; font-style:italic; color:var(--teal); border-left:3px solid var(--gold); padding-left:var(--space-md); margin:var(--space-lg) 0; }

/* FOOTER */
.site-footer { background:var(--charcoal); color:rgba(255,255,255,0.7); padding:var(--space-lg) 0 var(--space-md); }
.footer-inner { display:grid; grid-template-columns:1.5fr 1fr 1fr; gap:var(--space-lg); margin-bottom:var(--space-lg); }
.footer-brand .logo { color:#fff; font-size:1.2rem; display:inline-block; margin-bottom:var(--space-sm); }
.footer-brand .logo span { color:rgba(255,255,255,0.5); }
.footer-brand p { font-size:0.9rem; color:rgba(255,255,255,0.6); max-width:300px; }
.footer-nav h4 { font-family:var(--font-sans); font-size:0.85rem; font-weight:600; text-transform:uppercase; letter-spacing:0.1em; color:rgba(255,255,255,0.5); margin-bottom:var(--space-sm); }
.footer-nav ul { list-style:none; }
.footer-nav li { margin-bottom:0.5rem; }
.footer-nav a { color:rgba(255,255,255,0.7); font-size:0.95rem; }
.footer-nav a:hover { color:#fff; }
.footer-bottom { border-top:1px solid rgba(255,255,255,0.1); padding-top:var(--space-md); display:flex; justify-content:space-between; align-items:center; font-size:0.85rem; color:rgba(255,255,255,0.4); }
.footer-bottom a { color:rgba(255,255,255,0.5); }
.footer-bottom a:hover { color:#fff; }
.footer-legal { display:flex; gap:1.5rem; }

/* ANIMATIONS — only active when JS adds .js-ready to html */
html.js-ready .reveal { opacity:0; transform:translateY(30px); transition:opacity 0.8s var(--ease-out),transform 0.8s var(--ease-out); }
html.js-ready .reveal.visible { opacity:1; transform:translateY(0); }
html.js-ready .reveal--delay-1 { transition-delay:0.1s; }
html.js-ready .reveal--delay-2 { transition-delay:0.2s; }
html.js-ready .reveal--delay-3 { transition-delay:0.3s; }
html.js-ready .reveal--delay-4 { transition-delay:0.4s; }
html.js-ready .reveal--delay-5 { transition-delay:0.5s; }
html.js-ready .reveal--left { transform:translateX(-30px); }
html.js-ready .reveal--left.visible { transform:translateX(0); }
html.js-ready .reveal--right { transform:translateX(30px); }
html.js-ready .reveal--right.visible { transform:translateX(0); }
html.js-ready .reveal--scale { transform:scale(0.95); }
html.js-ready .reveal--scale.visible { transform:scale(1); }

/* COOKIE BANNER */
.cookie-banner { position:fixed; bottom:0; left:0; right:0; background:var(--charcoal); color:#fff; padding:1.2rem; z-index:9999; display:none; box-shadow:0 -4px 20px rgba(0,0,0,0.2); }
.cookie-banner.show { display:block; }
.cookie-banner__inner { max-width:var(--max-width); margin:0 auto; display:flex; align-items:center; justify-content:space-between; gap:1.5rem; flex-wrap:wrap; }
.cookie-banner__text { font-size:0.9rem; color:rgba(255,255,255,0.85); flex:1; margin:0; }
.cookie-banner__text a { color:var(--gold-light); text-decoration:underline; }
.cookie-banner__buttons { display:flex; gap:0.8rem; flex-shrink:0; }
.cookie-btn { padding:0.6rem 1.4rem; border-radius:50px; font-size:0.85rem; font-weight:600; cursor:pointer; border:none; transition:all var(--transition-fast); }
.cookie-btn--accept { background:var(--teal); color:#fff; }
.cookie-btn--accept:hover { background:var(--teal-light); }
.cookie-btn--reject { background:transparent; color:rgba(255,255,255,0.7); border:1px solid rgba(255,255,255,0.3); }
.cookie-btn--reject:hover { border-color:#fff; color:#fff; }

/* LEGAL */
.legal-content { max-width:750px; margin:0 auto; padding:var(--space-lg) 0; }
.legal-content h2 { font-size:1.4rem; margin-top:var(--space-md); margin-bottom:var(--space-sm); }
.legal-content h3 { font-size:1.1rem; margin-top:var(--space-sm); margin-bottom:0.5rem; }
.legal-content p,.legal-content li { font-size:0.95rem; color:var(--gray-dark); }
.legal-content ul { margin-left:1.5rem; margin-bottom:1rem; }

/* RESPONSIVE */
@media(max-width:900px) {
  .hero__covers { display:none; }
  .book-detail { grid-template-columns:1fr; }
  .book-detail__cover { position:static; text-align:center; }
  .book-detail__cover img { max-width:300px; margin:0 auto; }
  .footer-inner { grid-template-columns:1fr; gap:var(--space-md); }
  .contact-grid { grid-template-columns:1fr; }
}
@media(max-width:768px) {
  .main-nav { display:none; }
  .hamburger { display:flex; }
  .mobile-nav,.mobile-nav-overlay { display:block; }
  .mobile-nav { right:-300px; }
  .mobile-nav-overlay { pointer-events:none; opacity:0; }
  .hero { min-height:70vh; }
  .hero--home { min-height:80vh; }
  .section { padding:var(--space-lg) 0; }
  .catalogo-grid { grid-template-columns:repeat(auto-fill,minmax(140px,1fr)); gap:var(--space-sm); }
  .areas { flex-direction:column; align-items:center; }
  .footer-bottom { flex-direction:column; gap:0.8rem; text-align:center; }
  .cookie-banner__inner { flex-direction:column; text-align:center; }
}
@media(max-width:480px) {
  .catalogo-grid { grid-template-columns:repeat(2,1fr); }
  .hero__title { font-size:2rem; }
}