/*
  ESART
  Interacción (menú móvil, navegación fija, aparición al scroll)
  basada en TemplateMo 622 Clearwave:
  https://templatemo.com/tm-622-clearwave
  Reescrita para un sitio claro, en blanco, de lectura lenta.
*/

:root {
  --bg: #ffffff;
  --ink: #1a1a1a;
  --muted: #5c6570;
  --accent: #1a1a1a;
  --accent-deep: #000000;
  --line: rgba(26, 26, 26, 0.1);
  --soft: rgba(26, 26, 26, 0.05);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --slow: 1.8s;
  --slower: 2.6s;
  --nav-h: 74px;
  --serif: "Playfair Display", "Times New Roman", serif;
  --sans: "Barlow", "Segoe UI", sans-serif;
  --measure: 68ch;
  --wide: 1040px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 12px);
  font-size: 17px;
}

body {
  font-family: var(--sans);
  font-weight: 400;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button {
  font-family: inherit;
  cursor: pointer;
  border: 0;
  background: none;
  color: inherit;
}
ul { list-style: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 2000;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  transition: top var(--slow) var(--ease);
}
.skip:focus { top: 12px; }

/* ── Nav ── */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.72);
  transition: background var(--slow) var(--ease), box-shadow var(--slow) var(--ease);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 1px 0 var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.nav-inner {
  width: min(var(--wide), calc(100% - 40px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.nav-logo {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.45rem;
  letter-spacing: 0.14em;
  color: var(--ink);
  line-height: 1;
}
.nav-links {
  display: none;
  align-items: center;
  gap: 8px;
}
.nav-links > a,
.nav-drop > a {
  position: relative;
  color: var(--accent);
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: 0.01em;
  padding: 10px 14px;
  transition: color var(--slow) var(--ease);
}
.nav-links > a::after,
.nav-drop > a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 1px;
  background: var(--ink);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.15s var(--ease);
}
.nav-links > a:hover,
.nav-drop > a:hover,
.nav-links > a.is-current,
.nav-drop > a.is-current { color: var(--ink); }
.nav-links > a:hover::after,
.nav-drop > a:hover::after,
.nav-links > a.is-current::after,
.nav-drop > a.is-current::after { transform: scaleX(1); }

.nav-drop { position: relative; display: flex; align-items: center; }
.drop-btn {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--accent);
}
.chev {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: translateY(-2px) rotate(45deg);
  transition: transform 1s var(--ease);
}
.nav-drop.is-open .chev { transform: translateY(2px) rotate(225deg); }

.submenu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 280px;
  padding: 10px 0;
  background: #fff;
  border: 1px solid var(--line);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 1.1s var(--ease), transform 1.1s var(--ease), visibility 1.1s;
}
.nav-drop:hover .submenu,
.nav-drop:focus-within .submenu,
.nav-drop.is-open .submenu {
  opacity: 1;
  visibility: visible;
  transform: none;
}
.nav-drop.is-dismissed .submenu,
.nav-drop.is-dismissed:hover .submenu,
.nav-drop.is-dismissed:focus-within .submenu {
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}
.submenu a {
  display: block;
  padding: 11px 22px;
  color: var(--accent);
  font-size: 0.98rem;
  transition: background var(--slow) var(--ease), color var(--slow) var(--ease);
}
.submenu a:hover { background: var(--soft); color: var(--accent-deep); }

.nav-hamburger {
  width: 44px;
  height: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.9s var(--ease), opacity 0.9s var(--ease);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 990;
  background: #fff;
  padding: calc(var(--nav-h) + 12px) 28px 48px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.15s var(--ease), visibility 1.15s;
}
.mobile-menu.open { opacity: 1; visibility: visible; }
.mobile-menu a {
  display: block;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 400;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 1.3s var(--ease), transform 1.3s var(--ease), color var(--slow) var(--ease);
}
.mobile-menu.open a { opacity: 1; transform: none; }
.mobile-menu a:nth-child(1) { transition-delay: 0.12s; }
.mobile-menu a:nth-child(2) { transition-delay: 0.2s; }
.mobile-menu a:nth-child(3) { transition-delay: 0.28s; }
.mobile-menu a:nth-child(4) { transition-delay: 0.36s; }
.mobile-menu a:nth-child(5) { transition-delay: 0.44s; }
.mobile-menu a:nth-child(6) { transition-delay: 0.52s; }
.mobile-menu a:nth-child(7) { transition-delay: 0.6s; }
.mobile-menu a:nth-child(8) { transition-delay: 0.68s; }
.mobile-menu a:nth-child(9) { transition-delay: 0.76s; }
.mobile-menu a:nth-child(10) { transition-delay: 0.84s; }
.mobile-menu a:nth-child(11) { transition-delay: 0.92s; }
.mobile-menu .sub-link {
  padding-left: 16px;
  font-weight: 300;
  font-size: 1.02rem;
  color: var(--accent);
}
.mobile-label {
  margin-top: 22px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── Layout ── */
.wrap {
  width: min(var(--wide), calc(100% - 40px));
  margin: 0 auto;
}
.prose { max-width: var(--measure); }
.prose p + p { margin-top: 1.15em; }
.prose strong { font-weight: 500; }

.section {
  padding: 72px 0;
}
.section + .section { border-top: 1px solid var(--line); }

.kicker {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
h2, h3 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.22;
  color: var(--ink);
  overflow-wrap: break-word;
}
h2 { font-size: clamp(2rem, 6vw, 3.15rem); }
h3 {
  font-size: clamp(1.55rem, 4vw, 2.05rem);
  margin-bottom: 18px;
}

.rule {
  width: 64px;
  height: 1px;
  background: var(--accent);
  margin: 28px auto;
  transform-origin: center;
  animation: draw var(--slower) var(--ease) both;
}
@keyframes draw {
  from { transform: scaleX(0); opacity: 0; }
  to { transform: scaleX(1); opacity: 1; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--slower) var(--ease), transform var(--slower) var(--ease);
}
.reveal.visible { opacity: 1; transform: none; }
.d1 { transition-delay: 0.18s; }
.d2 { transition-delay: 0.36s; }
.d3 { transition-delay: 0.54s; }

/* ── Hero ── */
main { padding-top: var(--nav-h); }
.hero {
  padding: 36px 0 64px;
  text-align: center;
}
.hero-logo {
  width: min(100%, 560px);
  margin: 0 auto 8px;
  animation: rise var(--slower) var(--ease) both;
}
.hero-copy {
  margin: 0 auto;
  font-weight: 300;
  font-size: 1.08rem;
  line-height: 1.85;
  color: #2a3140;
  animation: rise var(--slower) var(--ease) 0.45s both;
}
.paths {
  display: grid;
  gap: 0;
  margin-top: 36px;
  text-align: left;
  border-top: 1px solid var(--line);
  animation: rise var(--slower) var(--ease) 0.85s both;
}
.path {
  display: block;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
  transition: background var(--slow) var(--ease);
}
.path:hover { background: var(--soft); }
.path-kicker {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.path-title {
  display: block;
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  line-height: 1.25;
  color: var(--ink);
}
.path-go {
  display: inline-block;
  margin-top: 8px;
  color: var(--accent);
  font-size: 0.95rem;
  transition: color var(--slow) var(--ease);
}
.path:hover .path-go { color: var(--accent-deep); }

.stage { position: relative; }
.panel-stage { position: relative; }

.sheet:not(.is-active):not(.is-leaving),
.panel:not(.is-active):not(.is-leaving) {
  display: none;
}
.sheet.is-active,
.panel.is-active {
  display: block;
  position: relative;
  z-index: 1;
  animation: sheetIn 1.15s var(--ease) both;
}
.sheet.is-leaving,
.panel.is-leaving {
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  z-index: 2;
  pointer-events: none;
  animation: sheetOut 0.9s ease both;
}
@keyframes sheetIn {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: none; }
}
@keyframes sheetOut {
  from { opacity: 1; transform: none; }
  to { opacity: 0; transform: translateY(-16px); }
}
.stage.no-motion .sheet,
.stage.no-motion .panel { animation: none; }

.tabs-ready .sheet.section { padding-top: 36px; padding-bottom: 72px; }
.tabs-ready .block { padding-top: 8px; }
.tabs-ready .block + .block { border-top: none; }

/* ── Subnav ── */
.subnav-wrap {
  position: sticky;
  top: var(--nav-h);
  z-index: 30;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.subnav {
  width: min(var(--wide), 100%);
  margin: 0 auto;
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 0 20px;
  scrollbar-width: none;
}
.subnav::-webkit-scrollbar { display: none; }
.subnav a {
  position: relative;
  flex: 0 0 auto;
  padding: 16px 14px;
  color: var(--accent);
  font-size: 0.95rem;
  white-space: nowrap;
}
.subnav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 10px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 1.15s var(--ease);
}
.subnav a:hover::after,
.subnav a.is-current::after { transform: scaleX(1); }

.block {
  padding: 56px 0;
  scroll-margin-top: calc(var(--nav-h) + 72px);
}
.block + .block { border-top: 1px solid var(--line); }
.lead {
  font-size: 1.12rem;
  font-weight: 300;
  line-height: 1.8;
  max-width: var(--measure);
  margin-bottom: 8px;
}

.points {
  margin-top: 22px;
  max-width: var(--measure);
}
.points li {
  position: relative;
  padding: 11px 0 11px 18px;
  border-bottom: 1px solid var(--line);
  line-height: 1.6;
}
.points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.55em;
  width: 7px;
  height: 1px;
  background: var(--accent);
}

.note {
  margin-top: 22px;
  max-width: var(--measure);
  color: var(--muted);
}

/* ── Publications, reviews, book ── */
.entries { max-width: 78ch; }
.entry {
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}
.entry a {
  color: var(--accent);
  transition: color var(--slow) var(--ease);
}
.entry a:hover { color: var(--accent-deep); }
.entry-title {
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.45;
}
.entry-meta {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 300;
}

.book {
  display: grid;
  gap: 22px;
  align-items: start;
  max-width: 680px;
}
.book img {
  width: min(210px, 62vw);
  border: 1px solid var(--line);
  transition: opacity var(--slow) var(--ease);
}
.book a:hover img { opacity: 0.82; }
.book-title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 2rem;
  line-height: 1;
  margin-bottom: 10px;
}
.text-link {
  display: inline-block;
  margin-top: 14px;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 1s var(--ease), color var(--slow) var(--ease);
}
.text-link:hover {
  color: var(--accent-deep);
  border-bottom-color: var(--accent);
}

/* ── Escritura ── */
.escritura-link {
  display: inline-block;
  margin-top: 22px;
  padding: 14px 22px;
  min-height: 48px;
  border: 1px solid var(--accent);
  color: var(--accent);
  letter-spacing: 0.02em;
  transition: background var(--slow) var(--ease), color var(--slow) var(--ease);
}
.escritura-link:hover {
  background: var(--accent);
  color: #fff;
}

/* ── Colaboraciones ── */
.partners {
  display: grid;
  gap: 28px;
  margin-top: 36px;
  align-items: center;
}
.partner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 18px;
  border: 1px solid var(--line);
  transition: border-color var(--slow) var(--ease);
}
.partner:hover { border-color: rgba(26, 26, 26, 0.45); }
.partner img { width: 100%; height: auto; object-fit: contain; }
.partner-ampos {
  background: #0d0d0d;
  border-color: #0d0d0d;
}
.partner-ampos img { max-width: 460px; }
.partner-neuro img { width: 128px; }
.partner-text {
  flex-direction: column;
  gap: 4px;
  text-align: center;
  color: var(--ink);
}
.partner-kicker {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.partner-name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.7rem;
  letter-spacing: 0.01em;
}

/* ── Contacto ── */
.contact-grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}
.card {
  padding-top: 8px;
}
.card h3 { font-size: 1.55rem; }
.card .role {
  color: var(--muted);
  font-weight: 300;
  margin-bottom: 14px;
}
.card a {
  color: var(--accent);
  transition: color var(--slow) var(--ease);
}
.card a:hover { color: var(--accent-deep); }
.card li + li { margin-top: 6px; }
.place {
  font-style: normal;
  line-height: 1.7;
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 300;
}
.footer-inner {
  width: min(var(--wide), calc(100% - 40px));
  margin: 0 auto;
  display: grid;
  gap: 8px;
}
.footer strong {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--ink);
  font-size: 1rem;
}
.footer a { color: var(--accent); }

/* ── Desktop ── */
@media (min-width: 720px) {
  .book {
    grid-template-columns: 210px 1fr;
    align-items: center;
    gap: 36px;
  }
  .partners { grid-template-columns: 1.4fr 0.8fr 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr 1fr; gap: 40px; }
}

@media (min-width: 880px) {
  .nav-hamburger { display: none; }
  .nav-links { display: flex; }
  .mobile-menu { display: none; }
  .section { padding: 104px 0; }
  .tabs-ready .sheet.section { padding-top: 48px; padding-bottom: 96px; }
  .hero { padding: 56px 0 88px; }
  .hero-copy { font-size: 1.2rem; }
  .paths { grid-template-columns: 1fr 1fr; }
  .path { padding: 28px 28px 28px 0; }
  .path + .path { padding-left: 28px; border-bottom: 1px solid var(--line); }
  .block { padding: 72px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}