/* ============================================
   VH VALLEJOS — Main Stylesheet
   Palette: beige / burgundy / dark brown
   ============================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  background-color: #F5E6D3;
  color: #3D2B1F;
  font-family: 'Montserrat', sans-serif;
  line-height: 1.7;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: #8E2E1C;
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover,
a:focus {
  color: #A0522D;
  text-decoration: underline;
}

h1, h2, h3, h4 {
  font-family: 'Playfair Display', serif;
  color: #8E2E1C;
  line-height: 1.25;
}

/* ---------- Layout Utility ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: #6B4A3A;
  margin-bottom: 2.5rem;
  max-width: 640px;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #F5E6D3;
  border-bottom: 1px solid #D4B896;
  box-shadow: 0 2px 8px rgba(61, 43, 31, 0.07);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo:hover,
.site-logo:focus {
  text-decoration: none;
  opacity: 0.85;
}

.logo-img {
  height: 36px;
  width: auto;
}

/* Desktop Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.main-nav li a {
  display: block;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #3D2B1F;
  border-radius: 4px;
  transition: color 0.2s, background-color 0.2s;
}

.main-nav li a:hover,
.main-nav li a:focus {
  color: #8E2E1C;
  background-color: rgba(142, 46, 28, 0.08);
  text-decoration: none;
}

.main-nav li a.active {
  color: #8E2E1C;
  border-bottom: 2px solid #8E2E1C;
  border-radius: 0;
}

/* ---------- CSS-only Hamburger ---------- */
.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.nav-toggle-label:hover {
  background-color: rgba(142, 46, 28, 0.1);
}

.nav-toggle-label span {
  display: block;
  width: 26px;
  height: 2px;
  background-color: #8E2E1C;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

/* Mobile menu open state */
.nav-toggle:checked ~ .header-inner .nav-toggle-label span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle:checked ~ .header-inner .nav-toggle-label span:nth-child(2) {
  opacity: 0;
}

.nav-toggle:checked ~ .header-inner .nav-toggle-label span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero Section ---------- */
.hero {
  background-color: #EDD9BF;
  background-image:
    linear-gradient(to bottom, rgba(245, 230, 211, 0.4), rgba(237, 217, 191, 0.7)),
    url('../img/inicio_r.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 96px 0 80px;
  text-align: center;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  font-weight: 700;
  color: #8E2E1C;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.hero-disciplines {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: clamp(1.1rem, 2.5vw, 1.45rem);
  color: #6B4A3A;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.hero-tagline {
  font-size: 1rem;
  color: #5A3A2A;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
}

.hero-cta {
  display: inline-block;
  background-color: #8E2E1C;
  color: #F5E6D3;
  padding: 12px 32px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: background-color 0.25s ease, transform 0.15s ease;
}

.hero-cta:hover,
.hero-cta:focus {
  background-color: #A0522D;
  color: #F5E6D3;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---------- Presentación Section ---------- */
.presentacion {
  padding: 72px 0;
  background-color: #F5E6D3;
}

.presentacion-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.presentacion-text .label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #A0522D;
  background-color: rgba(160, 82, 45, 0.1);
  padding: 3px 10px;
  border-radius: 2px;
  margin-bottom: 1rem;
}

.presentacion-text h2 {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  margin-bottom: 0.5rem;
}

.presentacion-text .book-subtitle {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.05rem;
  color: #6B4A3A;
  margin-bottom: 1.25rem;
}

.presentacion-text p {
  color: #5A3A2A;
  font-size: 0.97rem;
  margin-bottom: 1.5rem;
}

.book-cover-row {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.book-cover-row p {
  margin-bottom: 0;
}

.book-cover {
  width: 140px;
  flex-shrink: 0;
  border-radius: 4px;
  /*box-shadow: 0 4px 16px rgba(61, 43, 31, 0.18);*/
}

@media (max-width: 640px) {
  .book-cover-row {
    flex-direction: column;
    align-items: center;
  }
  .book-cover {
    width: 180px;
  }
}

.btn-outline {
  display: inline-block;
  border: 2px solid #8E2E1C;
  color: #8E2E1C;
  padding: 10px 28px;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.87rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background-color 0.25s, color 0.25s;
}

.btn-outline:hover,
.btn-outline:focus {
  background-color: #8E2E1C;
  color: #F5E6D3;
  text-decoration: none;
}

.video-container {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(61, 43, 31, 0.15);
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* ---------- Quick Links / Cards ---------- */
.quick-links {
  padding: 72px 0;
  background-color: #EDD9BF;
}

.quick-links-header {
  text-align: center;
  margin-bottom: 40px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.card {
  background-color: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(61, 43, 31, 0.1);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(61, 43, 31, 0.15);
}

.card-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-bottom: 1px solid #D4B896;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.card-body h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

.card-body p {
  font-size: 0.9rem;
  color: #5A3A2A;
  flex: 1;
  margin-bottom: 1.25rem;
}

.card-link {
  font-size: 0.83rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: #8E2E1C;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
}

.card-link::after {
  content: '→';
  transition: transform 0.2s ease;
}

.card-link:hover::after,
.card-link:focus::after {
  transform: translateX(4px);
}

.card-link:hover,
.card-link:focus {
  text-decoration: none;
  color: #A0522D;
}

/* ---------- About Snippet ---------- */
.about-snippet {
  padding: 72px 0;
  background-color: #F5E6D3;
}

.about-snippet-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.about-snippet .ornament {
  display: block;
  width: 48px;
  height: 3px;
  background-color: #8E2E1C;
  margin: 0 auto 1.5rem;
  border-radius: 2px;
}

.about-snippet h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  margin-bottom: 1.25rem;
}

.about-snippet p {
  font-size: 1.02rem;
  color: #5A3A2A;
  line-height: 1.85;
  margin-bottom: 2rem;
}

.btn-link {
  display: inline-block;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #8E2E1C;
  border-bottom: 2px solid #8E2E1C;
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.btn-link:hover,
.btn-link:focus {
  color: #A0522D;
  border-color: #A0522D;
  text-decoration: none;
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: #3D2B1F;
  color: #D4B896;
  padding: 48px 0 32px;
}

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

.footer-brand .footer-logo {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.footer-logo-img {
  height: 32px;
  width: auto;
  filter: brightness(0) invert(0.9);
}

.footer-brand p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: #B89A7A;
}

.footer-col h4 {
  font-family: 'Playfair Display', serif;
  color: #F5E6D3;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 0.45rem;
}

.footer-col ul li a {
  color: #B89A7A;
  font-size: 0.88rem;
  transition: color 0.2s;
}

.footer-col ul li a:hover,
.footer-col ul li a:focus {
  color: #F5E6D3;
  text-decoration: none;
}

.footer-contact p {
  font-size: 0.88rem;
  color: #B89A7A;
  margin-bottom: 0.5rem;
}

.footer-contact a {
  color: #D4A07A;
  transition: color 0.2s;
}

.footer-contact a:hover {
  color: #F5E6D3;
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid #5A3A2A;
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: #8A6A54;
}

/* ---------- Section Pages (inner) ---------- */
.page-hero {
  padding: 64px 0 48px;
  background-color: #EDD9BF;
  border-bottom: 1px solid #D4B896;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 0.5rem;
}

.page-hero .page-subtitle {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.1rem;
  color: #7A5036;
}

.page-content {
  padding: 64px 0 80px;
}

.placeholder-block {
  background-color: #EDD9BF;
  border: 2px dashed #C4956A;
  border-radius: 8px;
  padding: 48px 32px;
  text-align: center;
  color: #7A5036;
  font-style: italic;
  font-size: 0.97rem;
}

/* ---------- Biografía ---------- */
.bio-hero {
  background-image:
    linear-gradient(to bottom, rgba(237, 217, 191, 0.5), rgba(237, 217, 191, 0.85)),
    url('../img/bio.png');
  background-size: cover;
  background-position: center;
}

.bio-intro {
  margin-bottom: 3rem;
}

.bio-image {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(61, 43, 31, 0.12);
}

.bio-image img {
  width: 100%;
  height: auto;
  display: block;
}

.bio-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  margin-bottom: 0.25rem;
}

.bio-origin {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 1.05rem;
  color: #6B4A3A;
}

.bio-text {
  max-width: 800px;
}

.bio-text h3 {
  font-size: 1.3rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid #D4B896;
}

.bio-text h3:first-child {
  margin-top: 0;
}

.bio-text p {
  font-size: 0.97rem;
  color: #3D2B1F;
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

.bio-contact {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid #D4B896;
}

.bio-contact p {
  font-size: 0.95rem;
  color: #5A3A2A;
}

.bio-contact a {
  font-weight: 600;
}

/* ---------- Responsive: Tablet ---------- */
@media (max-width: 900px) {
  .presentacion-inner {
    grid-template-columns: 1fr;
  }

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Responsive: Mobile ---------- */
@media (max-width: 640px) {
  .nav-toggle-label {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background-color: #F5E6D3;
    border-top: 1px solid #D4B896;
    border-bottom: 1px solid #D4B896;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    box-shadow: 0 6px 16px rgba(61, 43, 31, 0.1);
    /* Hidden by default */
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }

  .nav-toggle:checked ~ .header-inner .main-nav {
    max-height: 400px;
  }

  .main-nav li a {
    padding: 12px 24px;
    font-size: 0.9rem;
    border-radius: 0;
  }

  .main-nav li a.active {
    border-bottom: none;
    border-left: 3px solid #8E2E1C;
    padding-left: 21px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero {
    padding: 64px 0 56px;
  }

  .presentacion,
  .quick-links,
  .about-snippet {
    padding: 48px 0;
  }
}

/* ---------- Focus Visible (Accessibility) ---------- */
:focus-visible {
  outline: 3px solid #8E2E1C;
  outline-offset: 3px;
}

/* Skip-to-content */
.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  background: #8E2E1C;
  color: #F5E6D3;
  padding: 8px 16px;
  border-radius: 0 0 4px 4px;
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 999;
  transition: top 0.2s;
}

.skip-link:focus {
  top: 0;
  color: #F5E6D3;
  text-decoration: none;
}