/* ============================================================
   LNMA-IMSS — Stylesheet — Following Mockup Exactly
   White background throughout. Clean. Noto Sans.
   ============================================================ */

:root {
  --color-primary:     #006847;
  --color-text:        #333;
  --color-text-light:  #555;
  --color-text-muted:  #888;
  --color-bg:          #ffffff;
  --color-border:      #ddd;
  --font-main:         'Noto Sans', sans-serif;
  --max-width:         960px;
  --nav-h:             44px;
  --fs-body:           13px;
}

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

html {
  font-size: 14px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 8px);
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-text); text-decoration: none; }
a:hover { color: var(--color-primary); }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* --- Scroll Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.revealed { opacity: 1; transform: translateY(0); }

/* ============================================================
   HEADER — center-aligned vertically, more whitespace
   ============================================================ */
.site-header { background: var(--color-bg); }

.header-inner {
  display: flex;
  align-items: center;          /* vertically centered */
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 20px 16px;     /* more top/bottom margin */
}

.header-left a { display: block; line-height: 0; }
.header-left img { height: 54px; width: auto; }    /* slightly bigger */
.header-right img { height: 76px; width: auto; }

/* ============================================================
   NAV — white bg, right-aligned
   ============================================================ */
.site-nav {
  background: var(--color-bg);
  border-bottom: 1px solid #eee;
  position: sticky;
  top: 0;
  z-index: 200;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: var(--nav-h);
  gap: 6px;
}

.nav-links {
  display: flex;
  list-style: none;
  height: 100%;
}
.nav-links li { height: 100%; }

.nav-links a {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 18px;
  font-size: var(--fs-body);
  font-weight: 400;
  color: var(--color-text);
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--color-primary); }

.lang-toggle {
  display: flex;
  margin-left: 14px;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}
.lang-toggle button {
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-main);
  font-size: 10px;
  font-weight: 600;
  padding: 3px 7px;
  cursor: pointer;
  transition: all 0.2s;
}
.lang-toggle button.active {
  background: var(--color-primary);
  color: #fff;
}

.nav-burger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  width: 30px;
  height: 30px;
  position: relative;
}
.nav-burger span {
  display: block; width: 18px; height: 2px;
  background: var(--color-text);
  position: absolute; left: 6px;
  transition: all 0.2s;
}
.nav-burger span:nth-child(1) { top: 7px; }
.nav-burger span:nth-child(2) { top: 14px; }
.nav-burger span:nth-child(3) { top: 21px; }
.nav-burger.open span:nth-child(1) { top: 14px; transform: rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { top: 14px; transform: rotate(-45deg); }

/* ============================================================
   CAROUSEL
   ============================================================ */
.carousel-section {
  position: relative;
  width: 100%;
  background: #111;
}

.carousel-viewport {
  position: relative;
  width: 100%;
  /* Landscape/desktop: full 16:9 image, width = 100vw, height proportional */
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.carousel-slide {
  position: absolute; inset: 0;
  opacity: 0;
  z-index: 0;
  transition: opacity 1.2s ease-in-out;
}
.carousel-slide.active { opacity: 1; z-index: 1; }
.carousel-slide.fade-out { opacity: 0; z-index: 1; transition: opacity 1.2s ease-in-out; }

.carousel-slide img,
.carousel-slide video {
  width: 100%;
  height: 100%;
  object-fit: cover;             /* landscape: image ratio ≈ viewport ratio → minimal/no crop */
  object-position: center center;
}

.carousel-placeholder {
  width: 100%; height: 100%;
  background: linear-gradient(145deg, #1a2e1a 0%, #0d1f2d 50%, #1a1a2e 100%);
}

/* --- Portrait pan animation (left → right with fade-out at end) --- */
@keyframes panLeftToRight {
  0%   { object-position: 0% var(--focal-y, center); opacity: 1; }
  85%  { object-position: 100% var(--focal-y, center); opacity: 1; }
  100% { object-position: 100% var(--focal-y, center); opacity: 0; }
}

/* Single-slide loop: pan, fade out, snap back, fade in */
@keyframes panLeftToRightLoop {
  0%   { object-position: 0% var(--focal-y, center); opacity: 1; }
  80%  { object-position: 100% var(--focal-y, center); opacity: 1; }
  90%  { object-position: 100% var(--focal-y, center); opacity: 0; }
  91%  { object-position: 0% var(--focal-y, center); opacity: 0; }
  100% { object-position: 0% var(--focal-y, center); opacity: 1; }
}

/* Caption overlay — ONE image, two text columns */
.carousel-caption-overlay {
  position: absolute;
  bottom: 28px;
  left: 0; right: 0;
  z-index: 5;
  pointer-events: none;
  transition: opacity 0.8s ease;
}

.carousel-caption-cols a {
  pointer-events: auto;
  color: rgba(255,255,255,0.95);
  text-decoration: underline;
}

.carousel-caption-row {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

/* Single square thumbnail with rounded corners */
.carousel-caption-thumb {
  width: 70px;
  height: 70px;
  border-radius: 6px;        /* square with rounded corners */
  overflow: hidden;
  flex-shrink: 0;
  background: rgba(255,255,255,0.15);
}
.carousel-caption-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}

.carousel-caption-cols {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 300px) minmax(0, 300px);
  gap: 20px;
  min-width: 0;
}

.carousel-caption-cols p {
  color: rgba(255,255,255,0.75);
  font-size: 11px;
  line-height: 1.5;
  margin: 0;
  max-width: 300px;            /* ~55 chars/line at 11px Noto Sans */
}

/* Dots — centered at bottom */
.carousel-dots-bar {
  position: absolute;
  bottom: 6px;
  left: 0; right: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  padding: 4px 0;
}
.carousel-dots {
  display: flex;
  gap: 5px;
  align-items: center;
}
.carousel-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  border: none; cursor: pointer; padding: 0;
  transition: all 0.3s;
}
.carousel-dot.active {
  background: #fff;
  width: 18px;
  border-radius: 4px;
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  padding: 40px 0;
  background: var(--color-bg);
}

.section-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
}

/* ============================================================
   NOSOTROS — consistent font size throughout
   ============================================================ */
.about-two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 32px;
}
.about-two-col p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.7;
  text-align: left;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.mv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 32px;
}
.mv-grid h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.mv-grid p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.7;
  text-align: left;
  hyphens: auto;
  -webkit-hyphens: auto;
}

.staff-section-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 6px;
  border-bottom: 1px solid #eee;
}

.staff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}

.staff-member {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Top row: photo + name/links side by side */
.staff-member-top {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 14px;
  min-height: 140px;       /* ensures both columns' bios start at the same level */
}

/* Square photo with rounded corners */
.staff-photo {
  width: 90px;
  height: 110px;
  border-radius: 4px;          /* square with slight rounding */
  overflow: hidden;
  flex-shrink: 0;
  background: #ddd;
}
.staff-photo img {
  width: 100%; height: 100%; object-fit: cover;
}

.staff-name-links h4 {
  font-size: var(--fs-body);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.staff-links a {
  display: block;
  font-size: var(--fs-body);
  color: var(--color-primary);
  line-height: 1.6;
}
.staff-links a:hover { text-decoration: underline; }

/* Bio below the top row */
.staff-bio p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.6;
  margin-bottom: 6px;
}

/* ============================================================
   EQUIPMENT — consistent font size, plain grid
   ============================================================ */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.equipment-item { cursor: pointer; }

.equipment-item-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #d4d4d4;
  margin-bottom: 5px;
}
.equipment-item-image img {
  width: 100%; height: 100%; object-fit: cover;
}

.equipment-item-name {
  font-size: var(--fs-body);     /* same as body text */
  color: var(--color-text);
  line-height: 1.4;
}

/* ============================================================
   MODAL — bullet points instead of checkmarks
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }

.modal {
  background: #fff; border-radius: 4px;
  max-width: 580px; width: 100%; max-height: 85vh; overflow-y: auto;
  transform: translateY(10px); transition: transform 0.3s;
}
.modal-overlay.open .modal { transform: translateY(0); }

.modal-header {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #e0e0e0;
}
.modal-header img { width: 100%; height: 100%; object-fit: cover; }

.modal-close {
  position: absolute; top: 8px; right: 8px;
  width: 26px; height: 26px; border-radius: 50%;
  border: none; background: rgba(0,0,0,0.5); color: #fff;
  font-size: 15px; cursor: pointer;
  display: flex; align-items: center; justify-content: center; z-index: 1;
}
.modal-close:hover { background: rgba(0,0,0,0.8); }

.modal-body { padding: 16px 20px 20px; }
.modal-body h3 { font-size: 15px; font-weight: 700; margin-bottom: 10px; }
.modal-body .description {
  font-size: var(--fs-body); color: var(--color-text-light);
  line-height: 1.7; margin-bottom: 14px;
}

.modal-specs h4 {
  font-size: 12px; font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 6px;
}
.modal-specs ul {
  list-style: disc;                /* bullet points */
  padding-left: 18px;
}
.modal-specs li {
  font-size: var(--fs-body);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ============================================================
   POLICIES — Políticas de reconocimiento
   ============================================================ */
.policies-intro p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.7;
  text-align: left;
  hyphens: auto;
  -webkit-hyphens: auto;
}
.policies-intro a,
.policies-registry a {
  color: var(--color-primary);
  text-decoration: underline;
}
.policies-intro a:hover,
.policies-registry a:hover {
  color: var(--color-accent);
}

.policies-document {
  margin: 28px 0;
}
.policies-document h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.pdf-embed-wrapper {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border: 1px solid #ddd;
  border-radius: 4px;
  overflow: hidden;
}
.pdf-embed {
  width: 100%;
  height: 600px;
  border: none;
  display: block;
}

.pdf-download-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-primary);
}
.pdf-download-link:hover {
  color: var(--color-accent);
}

.policies-notices {
  margin: 24px 0;
}
.policies-notices p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.7;
  text-align: left;
  hyphens: auto;
  -webkit-hyphens: auto;
  margin-bottom: 14px;
}

.policies-registry {
  margin-top: 20px;
  padding: 16px 20px;
  background: #f7f7f7;
  border-left: 3px solid var(--color-primary);
  border-radius: 2px;
}
.policies-registry p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.6;
  margin: 0;
}

/* ============================================================
   CONTACT — map 100% viewport width, rest contained
   ============================================================ */
.contact-map-wrapper {
  width: 100vw;
  margin-left: calc(-50vw + 50%);
}

.contact-map {
  width: 100%;
  height: 360px;
  border: none;
  display: block;
}

.contact-lab-title {
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
  margin: 24px 0 18px;
  padding-bottom: 0;
}

.contact-two-col {
  display: grid;
  grid-template-columns: auto auto;
  gap: 40px;
  justify-content: center;
  margin: 0 auto;
}
.contact-two-col p {
  font-size: var(--fs-body);
  color: var(--color-text);
  line-height: 1.7;
}
.contact-two-col a { color: var(--color-primary); }

/* ============================================================
   FOOTER
   Desktop: single row — Maza left-aligned, logos centered
   Mobile: stacked — logos on top, Maza below
   ============================================================ */
.site-footer {
  background: var(--color-bg);
  padding: 28px 0 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;          /* for absolute positioning of Maza on desktop */
  min-height: 80px;
}

.footer-left {
  position: absolute;
  left: 20px;
}
.footer-left img { height: 70px; width: auto; }

.footer-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.footer-logos a { display: block; line-height: 0; }
.footer-logos img { height: 65px; width: auto; }

.footer-copyright {
  text-align: center;
  font-size: 11px;
  color: var(--color-text-muted);
  padding: 14px 20px 0;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
  /* Mobile menu: horizontal wrap, push-down, evenly spaced */
  .nav-burger { display: block; }

  .nav-inner {
    flex-wrap: wrap;
    height: auto;                /* let nav grow with wrapped menu rows */
    min-height: var(--nav-h);
  }

  .nav-links {
    display: none;
    width: 100%;
    order: 10;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-evenly;
    background: #fff;
    border-bottom: 1px solid #eee;
    padding: 6px 0;
    list-style: none;
  }
  .nav-links.open { display: flex; }
  .nav-links li { height: auto; }
  .nav-links a {
    padding: 10px 14px;
    font-size: 13px;
    white-space: nowrap;
  }

  .nav-inner {
    flex-wrap: wrap;
  }

  /* Sections single-column */
  .about-two-col, .mv-grid, .staff-grid, .contact-two-col {
    grid-template-columns: 1fr;
  }
  .equipment-grid { grid-template-columns: repeat(2, 1fr); }

  .carousel-caption-cols { grid-template-columns: 1fr; }

  .header-left img { height: 38px; }
  .header-right img { height: 58px; }

  .staff-member-top { min-height: auto; }

  .contact-two-col { max-width: 100%; }

  /* PDF embed shorter on mobile */
  .pdf-embed { height: 400px; }

  /* Footer mobile: stacked — logos first, Maza below, centered */
  .footer-inner {
    flex-direction: column;
    position: static;
    gap: 16px;
  }
  .footer-left {
    position: static;
    order: 2;
  }
  .footer-logos { order: 1; }
}

/* Portrait: carousel fills viewport height, image pans left → right with fade-out */
@media (max-width: 768px) and (orientation: portrait) {
  .carousel-viewport {
    aspect-ratio: auto;
    height: 100svh;
  }
  .carousel-slide img,
  .carousel-slide video {
    object-fit: cover;
    object-position: 0% var(--focal-y, center);
  }
  .carousel-slide.active img,
  .carousel-slide.active video {
    animation: panLeftToRight var(--slide-duration, 5s) linear forwards;
  }

  /* Single slide: infinite loop */
  .carousel-viewport.single-slide .carousel-slide.active img,
  .carousel-viewport.single-slide .carousel-slide.active video {
    animation: panLeftToRightLoop var(--slide-duration, 5s) linear infinite;
  }

  /* Captions: visible, stacked single column with gradient backdrop */
  .carousel-caption-overlay {
    display: block;
    bottom: 30px;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.3) 70%, transparent 100%);
    padding-top: 40px;
    padding-bottom: 8px;
  }
  .carousel-caption-row {
    padding: 0 16px;
    gap: 10px;
  }
  .carousel-caption-thumb {
    width: 54px;
    height: 54px;
  }
  .carousel-caption-cols {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .carousel-caption-cols p {
    max-width: none;             /* full available width */
    font-size: 11px;
  }
}

/* Landscape mobile: proportional 16:9 */
@media (max-width: 768px) and (orientation: landscape) {
  .carousel-viewport {
    aspect-ratio: 16 / 9;
  }
}

.carousel-empty {
  background: linear-gradient(145deg, #1a2e1a 0%, #0d1f2d 50%, #1a1a2e 100%);
  aspect-ratio: 16 / 9;
}

/* Contact section — no top padding, map breaks out */
#contacto.section {
  padding-top: 0;
}

.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}