@import url("https://fonts.googleapis.com/css2?family=Barlow:wght@400;500;600;700&family=Space+Grotesk:wght@500;600;700&display=swap");

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

:root {
  /* Light-mode (default) tokens */
  --site-bg-0: #f8fafc;
  --site-bg-1: #eef5fb;
  --site-bg-2: #e6f0fb;
  --site-panel: rgba(255, 255, 255, 0.95);
  --site-panel-soft: rgba(255, 255, 255, 0.9);
  --site-border: rgba(20, 66, 120, 0.06);
  --site-text: #0b1722;
  --site-muted: #3b5570;
  --site-accent: #0b76c1;
  --site-accent-strong: #0869a8;
  --site-shadow: 0 8px 18px rgba(9, 30, 56, 0.06);
  --site-card-bg: linear-gradient(155deg, #ffffff, #f6fbff);
  --site-card-border: rgba(11, 118, 193, 0.06);
  --site-heading: #072034;
  --site-heading-muted: #345a74;
  --member-img-bg: #eaeaea;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Dark-mode tokens (previous defaults) */
    --site-bg-0: #07101d;
    --site-bg-1: #102136;
    --site-bg-2: #18395b;
    --site-panel: rgba(12, 24, 42, 0.78);
    --site-panel-soft: rgba(17, 30, 51, 0.68);
    --site-border: rgba(165, 198, 239, 0.22);
    --site-text: #e9f1fb;
    --site-muted: #bfd0e2;
    --site-accent: #8dd8ff;
    --site-accent-strong: #45b6f1;
    --site-shadow: 0 12px 28px rgba(1, 6, 16, 0.38);
    --site-card-bg: linear-gradient(155deg, rgba(49, 80, 124, 0.94), rgba(28, 51, 86, 0.9));
    --site-card-border: rgba(177, 223, 255, 0.62);
    --site-heading: #eff6ff;
    --site-heading-muted: #dbeafe;
    --member-img-bg: rgba(34,44,58,0.36);
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Barlow", Arial, sans-serif !important;
  line-height: 1.65;
  color: var(--site-text) !important;
  background:
    radial-gradient(circle at 82% 16%, rgba(115, 170, 255, 0.2), transparent 34%),
    radial-gradient(circle at 14% 78%, rgba(100, 214, 255, 0.14), transparent 36%),
    linear-gradient(145deg, var(--site-bg-0) 0%, var(--site-bg-1) 56%, var(--site-bg-2) 100%) !important;
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.08;
  background-image: linear-gradient(0deg, transparent 23px, rgba(181, 210, 245, 0.28) 24px);
  background-size: 100% 24px;
  z-index: 0;
}

body > * {
  position: relative;
  z-index: 1;
}

a {
  color: var(--site-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--site-accent-strong);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--site-accent);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Space Grotesk", "Barlow", sans-serif;
  color: var(--site-heading);
  line-height: 1.18;
}

/* Estilo del menú de navegación */
.navbar {
  background: linear-gradient(135deg, rgba(10, 20, 35, 0.94), rgba(18, 33, 55, 0.92));
  color: white;
  padding: 14px 24px;
  border-bottom: 1px solid rgba(160, 202, 241, 0.18);
  box-shadow: 0 8px 24px rgba(1, 6, 16, 0.28);
  backdrop-filter: blur(14px);
}

.navbar ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: flex-start;
  align-items: center;
}

.navbar ul li {
  margin-right: 0;
}

.navbar ul li a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: color 180ms ease, opacity 180ms ease;
}

.navbar ul li a:hover {
  color: var(--site-accent);
  text-decoration: none;
}

/* Estilo del contenido principal */
main {
  padding: 20px;
  max-width: 1160px;
  margin: 22px auto 0;
  background: transparent !important;
  border-radius: 0;
  box-shadow: none !important;
}

/* Shells editoriales compartidos */
main > section > div,
.welcome-section,
#former-members,
.member,
.research-card,
.publication-card,
#publications-list,
main > section,
.page-stack,
.page-panel,
section > div {
  background: linear-gradient(155deg, var(--site-panel), var(--site-panel-soft)) !important;
  color: var(--site-text) !important;
  border: 1px solid var(--site-border) !important;
  border-radius: 20px !important;
  box-shadow: var(--site-shadow) !important;
}

main > section > div,
.welcome-section,
.page-stack,
main > section {
  padding: clamp(1.25rem, 2vw, 2rem) !important;
}

main > section > div,
.welcome-section,
.research-card,
.publication-card,
.member {
  background: var(--site-card-bg) !important;
  border-color: var(--site-card-border) !important;
  transition: transform 220ms ease, box-shadow 220ms ease, border-color 220ms ease, background 220ms ease;
  will-change: transform, box-shadow;
}

main > section > div:hover,
.welcome-section:hover,
.container:hover,
.research-card:hover,
.publication-card:hover,
.member:hover {
  transform: translateY(-3px);
  border-color: rgba(153, 211, 255, 0.5) !important;
  box-shadow: 0 16px 32px rgba(1, 6, 16, 0.42) !important;
}

main > section > div h1,
main > section > div h2,
main > section > div h3,
.welcome-section h1,
.welcome-section h2,
.container h1,
.container h2,
.container h3 {
  margin-top: 0;
}

main > section > div p,
.welcome-section p,
.container p,
.research-card p,
.publication-card p,
.member-info,
#publications-list {
  color: var(--site-muted) !important;
}

main > section > div p,
.welcome-section p,
.container p,
.research-card p,
.publication-card p {
  text-align: justify;
}

.page-stack {
  width: 100%;
  max-width: 900px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: center;
  gap: 24px;
  margin: 40px auto;
}

.page-stack.page-stack-wide {
  max-width: 1160px;
}

.container {
  background: linear-gradient(155deg, var(--site-panel), var(--site-panel-soft)) !important;
  border: 1px solid var(--site-border) !important;
  border-radius: 24px !important;
  overflow: hidden;
}

.page-panel {
  width: 100%;
  padding: clamp(1.25rem, 2vw, 2rem) !important;
}

.simulations-page .page-panel {
  background: linear-gradient(155deg, var(--site-panel), var(--site-panel-soft)) !important;
  border-color: var(--site-card-border) !important;
}

.simulations-page .page-panel + .page-panel {
  background: linear-gradient(155deg, var(--site-panel), var(--site-panel-soft)) !important;
}

.page-split {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
}

.page-split > * {
  flex: 1;
}

.page-split img {
  flex: 0 0 auto;
}

main > section > div ul,
.welcome-section ul,
.container ul {
  color: var(--site-muted);
}

main > section > div strong,
.welcome-section strong,
.container strong {
  color: var(--site-heading);
}

/* Home page */
.banner-container {
  width: 100%;
  height: 400px;
  position: relative;
  overflow: hidden;
  background: #000;
}

.banner-slide {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  background-size: cover;
  background-position: center;
}

.banner-slide.active {
  opacity: 1;
}

.banner-dots {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.banner-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background 0.3s;
}

.banner-dot.active {
  background: rgba(255, 255, 255, 1);
}

.banner-dot:hover {
  background: rgba(255, 255, 255, 0.8);
}

.welcome-section {
  max-width: 900px;
  margin: 40px auto;
}

.welcome-section h1 {
  color: var(--site-heading);
  margin-bottom: 24px;
  font-size: clamp(2rem, 3vw, 2.8rem);
  border-bottom: 3px solid var(--site-accent-strong);
  padding-bottom: 12px;
}

.welcome-section h2 {
  color: var(--site-heading-muted);
  margin-top: 32px;
  margin-bottom: 16px;
  font-size: clamp(1.2rem, 2vw, 1.7rem);
}

.welcome-section p {
  line-height: 1.82;
  margin-bottom: 16px;
  font-size: 1.02em;
}

.intro-highlight {
  background: linear-gradient(135deg, rgba(80, 145, 205, 0.2), rgba(40, 90, 130, 0.16)) !important;
  border-left: 4px solid var(--site-accent-strong) !important;
  padding: 20px 24px;
  margin: 24px 0;
  border-radius: 14px !important;
}

.intro-highlight p {
  margin: 0;
  font-size: 1.05em;
  color: var(--site-heading) !important;
}

/* Research cards layout */
.research-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 12px;
}

.research-card {
  padding: 16px 18px;
  width: 100%;
}

.research-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

.research-card p {
  font-size: 0.95rem;
}

/* Publications */
#publications-list {
  margin-top: 20px;
  padding: 0;
  border: none !important;
  background: transparent !important;
  box-shadow: none !important;
}

.publication-card {
  padding: 20px;
  margin-bottom: 16px;
}

.paper-title {
  margin: 0 0 10px 0;
  font-size: 1.1em;
  color: var(--site-heading);
  line-height: 1.4;
}

.authors {
  color: var(--site-muted);
  font-size: 0.9em;
  margin: 8px 0;
  line-height: 1.5;
}

.journal {
  color: var(--site-accent);
  font-weight: 500;
  margin: 6px 0;
}

.date {
  color: #91a6bf;
  font-size: 0.85em;
  margin: 6px 0 12px 0;
}

.publication-card a {
  color: var(--site-accent);
  text-decoration: none;
  font-size: 0.9em;
}

.publication-card a:hover {
  text-decoration: underline;
}

/* Members page */
.container {
  max-width: 980px !important;
  margin: 40px auto !important;
  padding: 32px !important;
}

.container h1 {
  text-align: center;
  color: var(--site-heading);
  margin-bottom: 32px;
}

.members-list {
  display: block;
}

.member {
  display: flex;
  align-items: flex-start;
  padding: 16px 24px;
  width: 400px;
  flex: 0 0 400px;
  box-sizing: border-box;
  min-height: 150px;
  cursor: pointer;
  backdrop-filter: blur(1.5px);
}

.member:hover {
  border-color: rgba(198, 233, 255, 0.82) !important;
  box-shadow: 0 18px 34px rgba(0, 0, 0, 0.42) !important;
}

.member-info {
  display: flex;
  flex-direction: column;
  word-break: break-word;
  width: 100%;
}

.member-info details {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(170, 202, 237, 0.2);
}

.member-info details summary {
  cursor: pointer;
  color: var(--site-accent);
  font-size: 1em;
  font-weight: 500;
  list-style: none;
  user-select: none;
}

.member-info details summary::-webkit-details-marker {
  display: none;
}

.member-info details summary::before {
  content: '+ ';
  font-size: 1.4em;
  margin-left: -100px;
  margin-right: 8px;
}

.member-info details[open] summary::before {
  content: '- ';
  font-size: 2em;
  margin-left: -100px;
  margin-right: 8px;
}

.member-info details p {
  margin: 8px 0 0 -104px;
  font-size: 0.95em;
  color: var(--site-muted) !important;
  line-height: 1.5;
  text-align: justify;
}

.member-info a {
  word-break: break-all;
}

.member img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 50%;
  margin-right: 24px;
  border: 2px solid rgba(177, 211, 247, 0.18);
  background: var(--member-img-bg, #eaeaea);
  flex-shrink: 0;
}

.member-name {
  font-size: 1.2em;
  font-weight: 600;
  color: var(--site-heading);
}

.member-title {
  font-size: 1em;
  color: var(--site-muted);
  margin-top: 4px;
}

.member-section {
  margin: 48px 0;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

.section-title {
  font-size: 1.1em;
  color: var(--site-heading-muted);
  text-align: center;
  margin: 12px 0 18px 0;
}

.members-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  justify-content: center;
  align-items: flex-start;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}

#former-members {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  border-radius: 0 !important;
}

/* Generic page sections used by the static pages */
section[style*="background: #fff"],
main section[style*="background: #fff"],
div[style*="background: #fff"] {
  background: linear-gradient(155deg, var(--site-panel), var(--site-panel-soft)) !important;
  color: var(--site-text) !important;
  border: 1px solid var(--site-border) !important;
  box-shadow: var(--site-shadow) !important;
}

section[style*="max-width: 800px"],
section[style*="max-width: 900px"] {
  border-radius: 20px !important;
}

section[style*="padding: 32px 28px"],
main section[style*="padding: 32px 28px"],
div[style*="padding: 32px 28px"] {
  padding: clamp(1.25rem, 2vw, 2rem) !important;
}

@media (max-width: 600px) {
  .members-grid {
    flex-direction: column;
    gap: 20px;
  }

  .member {
    min-width: unset;
    max-width: 100%;
  }
}

@media (max-width: 720px) {
  .navbar {
    padding: 12px 16px;
  }

  .navbar ul {
    gap: 12px;
  }

  main {
    padding: 14px;
  }

  .container,
  .welcome-section {
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
  }

  .research-card,
  .publication-card,
  .member,
  .welcome-section,
  .container,
  main > section > div,
  .navbar ul li a {
    transition: none !important;
  }

  .research-card:hover,
  .publication-card:hover,
  .member:hover,
  .welcome-section:hover,
  .container:hover,
  main > section > div:hover {
    transform: none !important;
  }
}