/* ==========================================================================
   Laboratorio Lister — Landing page
   Paleta extraída de la identidad de marca (carpeta institucional):
   granate #7B121F · dorado #FFD400 · gris #5E6264
   ========================================================================== */

:root{
  --maroon-900: #4c0b13;
  --maroon-800: #5e0f19;
  --maroon-700: #7B121F;
  --maroon-600: #8f1a26;
  --maroon-500: #a3222f;
  --gold: #FFD400;
  --gold-soft: #f5c94e;
  --ink: #201417;
  --gray-700: #5E6264;
  --gray-500: #83898b;
  --gray-300: #c9c6c3;
  --gray-100: #f4f1ee;
  --paper: #fffdfb;
  --white: #ffffff;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Poppins', 'Segoe UI', sans-serif;

  --container: 1180px;
  --radius: 18px;
  --ease: cubic-bezier(.22,1,.36,1);
  --shadow-soft: 0 20px 50px -20px rgba(76, 11, 19, .35);
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
ul{ list-style: none; margin: 0; padding: 0; }
button{ font-family: inherit; cursor: pointer; }
input, textarea{ font-family: inherit; }

.container{
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

h1, h2, h3{ font-family: var(--font-display); line-height: 1.15; margin: 0 0 16px; }
h2{ font-size: clamp(1.9rem, 3.2vw, 2.7rem); font-weight: 600; color: var(--maroon-700); }
h3{ font-size: 1.15rem; font-weight: 600; }
p{ margin: 0 0 12px; }
.lead{ color: var(--gray-700); font-size: 1.05rem; line-height: 1.7; max-width: 560px; }
.center{ text-align: center; margin-inline: auto; }
.section{ padding: 110px 0; position: relative; }

.eyebrow{
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .78rem;
  font-weight: 600;
  color: var(--maroon-600);
  margin: 0 0 10px;
}

/* ---------------- progress bar ---------------- */
.progress-bar{
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--maroon-700));
  z-index: 1000; transition: width .1s linear;
}

/* ---------------- buttons ---------------- */
.btn{
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1.5px solid transparent;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease), color .35s var(--ease), border-color .35s var(--ease);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary{
  background: var(--maroon-700);
  color: var(--white);
  box-shadow: 0 12px 30px -10px rgba(123,18,31,.55);
}
.btn-primary:hover{ transform: translateY(-3px); box-shadow: 0 18px 34px -12px rgba(123,18,31,.6); background: var(--maroon-600); }
.btn-ghost{
  border-color: rgba(255,255,255,.55);
  color: var(--white);
  backdrop-filter: blur(2px);
}
.btn-ghost:hover{ background: rgba(255,255,255,.12); transform: translateY(-3px); border-color: var(--gold); }
.btn-block{ width: 100%; }

/* ---------------- reveal-on-scroll ---------------- */
.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease), transform .8s var(--ease);
  transition-delay: var(--d, 0s);
}
.reveal.in-view{ opacity: 1; transform: translateY(0); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position: fixed; inset: 0 0 auto 0; z-index: 500;
  padding: 20px 0;
  transition: background .4s var(--ease), padding .4s var(--ease), box-shadow .4s var(--ease);
}
.site-header.scrolled{
  padding: 12px 0;
  background: rgba(255, 253, 251, .88);
  backdrop-filter: blur(10px);
  box-shadow: 0 8px 30px -18px rgba(0,0,0,.35);
}
.header-inner{ display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.brand{ display: flex; align-items: center; }
.brand-logo{
  height: 46px; width: auto; display: block;
  transition: opacity .4s var(--ease), transform .4s var(--ease);
}
/* Header sits over the dark hero by default: show the light/white-on-transparent
   logo variant and hide the maroon-on-transparent one made for light backgrounds. */
.brand-logo-light{ display: none; }
.site-header.scrolled .brand-logo-dark{ display: none; }
.site-header.scrolled .brand-logo-light{ display: block; }

.main-nav{ display: flex; align-items: center; gap: 30px; }
.main-nav a{
  font-size: .92rem; font-weight: 500; color: var(--white);
  position: relative; padding-bottom: 4px; transition: color .4s var(--ease);
}
.site-header.scrolled .main-nav a{ color: var(--ink); }
.main-nav a:not(.nav-cta)::after{
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--gold); transition: width .3s var(--ease);
}
.main-nav a:not(.nav-cta):hover::after{ width: 100%; }
.nav-cta{
  background: var(--gold); color: var(--maroon-900) !important;
  padding: 9px 18px; border-radius: 999px; font-weight: 600;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}
.nav-cta:hover{ transform: translateY(-2px); box-shadow: 0 10px 20px -8px rgba(0,0,0,.35); }

.nav-toggle{
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 38px; height: 38px; background: none; border: none;
}
.nav-toggle span{
  display: block; height: 2px; width: 100%; background: var(--white);
  transition: transform .3s var(--ease), opacity .3s var(--ease), background .3s var(--ease);
}
.site-header.scrolled .nav-toggle span{ background: var(--maroon-700); }
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity: 0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
  color: var(--white);
}
.hero-bg{
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  transform: scale(1.08);
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom{ from{ transform: scale(1.08);} to{ transform: scale(1);} }
.hero-overlay{
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(76,11,19,.86) 0%, rgba(76,11,19,.82) 45%, rgba(32,20,23,.94) 100%);
}
.hero-shape{
  position: absolute; right: -12%; top: -18%; width: 60vw; height: 60vw; max-width: 820px; max-height: 820px;
  border: 1px solid rgba(255,212,0,.18);
  border-radius: 50%;
  animation: spin 60s linear infinite;
}
.hero-shape::before{
  content: ''; position: absolute; inset: 40px; border: 1px solid rgba(255,255,255,.1); border-radius: 50%;
}
@keyframes spin{ to{ transform: rotate(360deg); } }

.hero-inner{ position: relative; z-index: 2; padding-top: 90px; }
.hero-inner .eyebrow{ color: var(--gold-soft); }
.hero h1{
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  font-weight: 600; color: var(--white); max-width: 780px;
}
.hero-highlight{
  font-size: 1.15rem; max-width: 620px; color: rgba(255,255,255,.9);
  line-height: 1.6; margin-bottom: 34px;
}
.hero-highlight strong{ color: var(--gold); }
.hero-actions{ display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 64px; }

.hero-stats{ display: flex; gap: 48px; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,.18); padding-top: 28px; }
.stat{ display: flex; flex-direction: column; }
.stat-num{ font-family: var(--font-display); font-size: 2.1rem; font-weight: 700; color: var(--gold); display: inline; }
.stat-suffix{ font-family: var(--font-display); font-size: 2.1rem; font-weight: 700; color: var(--gold); }
.stat-label{ font-size: .82rem; color: rgba(255,255,255,.75); margin-top: 4px; max-width: 160px; }

.scroll-cue{
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px; border: 1.5px solid rgba(255,255,255,.5); border-radius: 20px;
  z-index: 2;
}
.scroll-cue span{
  position: absolute; top: 8px; left: 50%; width: 4px; height: 8px; margin-left: -2px;
  background: var(--gold); border-radius: 3px;
  animation: scrollCue 1.8s ease-in-out infinite;
}
@keyframes scrollCue{
  0%{ transform: translateY(0); opacity: 1; }
  70%{ transform: translateY(14px); opacity: 0; }
  100%{ opacity: 0; }
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about{ background: var(--paper); }
.about-grid{ display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: start; }

.about-media{ position: sticky; top: 110px; }
.about-media-frame{
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-soft);
  aspect-ratio: 4/5;
}
.about-media-frame img{ width: 100%; height: 100%; object-fit: cover; transition: transform .8s var(--ease); }
.about-media:hover .about-media-frame img{ transform: scale(1.06); }
.about-badge{
  margin-top: -50px; margin-left: 24px; position: relative; z-index: 2;
  background: var(--maroon-700); color: var(--white);
  border-radius: var(--radius); padding: 20px 24px;
  width: calc(100% - 48px);
  box-shadow: var(--shadow-soft);
  display: flex; align-items: center; gap: 16px;
}
.about-badge span{ font-family: var(--font-display); font-size: 2rem; font-weight: 700; color: var(--gold); }
.about-badge small{ font-size: .78rem; line-height: 1.4; color: rgba(255,255,255,.85); }

.pillars{ display: grid; grid-template-columns: 1fr 1fr; gap: 30px 34px; margin-top: 40px; }
.pillar{
  padding-top: 6px; border-top: 2px solid var(--gray-300);
  transition: border-color .4s var(--ease);
}
.pillar:hover{ border-color: var(--gold); }
.pillar-num{ font-family: var(--font-display); font-size: .85rem; color: var(--gold-soft); font-weight: 700; background: var(--maroon-700); display: inline-block; padding: 3px 9px; border-radius: 999px; margin-bottom: 10px; }
.pillar h3{ color: var(--maroon-700); margin-bottom: 6px; }
.pillar p{ color: var(--gray-700); font-size: .92rem; line-height: 1.6; margin: 0; }

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services{ background: var(--gray-100); }
.services > .container > .lead{ margin-bottom: 50px; }

.services-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card{
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 26px;
  border: 1px solid rgba(0,0,0,.05);
  transition: transform .45s var(--ease), box-shadow .45s var(--ease), border-color .45s var(--ease);
  position: relative;
  overflow: hidden;
}
.service-card::after{
  content: ''; position: absolute; left: 0; bottom: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--gold), var(--maroon-700));
  transition: width .45s var(--ease);
}
.service-card:hover{
  transform: translateY(-8px);
  box-shadow: 0 24px 50px -24px rgba(76,11,19,.35);
  border-color: transparent;
}
.service-card:hover::after{ width: 100%; }
.service-icon{
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--gray-100);
  color: var(--maroon-700);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  transition: background .4s var(--ease), color .4s var(--ease), transform .4s var(--ease);
}
.service-icon svg{ width: 26px; height: 26px; }
.service-card:hover .service-icon{ background: var(--maroon-700); color: var(--gold); transform: rotate(-6deg) scale(1.05); }
.service-card h3{ color: var(--ink); margin-bottom: 8px; font-size: 1.08rem; }
.service-card p{ color: var(--gray-700); font-size: .9rem; line-height: 1.6; margin: 0; }

/* ==========================================================================
   QUALITY (parallax band)
   ========================================================================== */
.quality{
  position: relative; color: var(--white); overflow: hidden;
  padding: 140px 0;
}
.quality-bg{
  position: absolute; inset: 0; background-size: cover; background-position: center;
  background-attachment: fixed;
}
.quality-overlay{ position: absolute; inset: 0; background: linear-gradient(120deg, rgba(76,11,19,.92), rgba(76,11,19,.65)); }
.quality-inner{ position: relative; z-index: 2; }
.quality-inner .eyebrow{ color: var(--gold-soft); }
.quality h2{ color: var(--white); max-width: 640px; }
.quality .lead{ color: rgba(255,255,255,.85); max-width: 600px; margin-bottom: 34px; }

/* ==========================================================================
   CERTS
   ========================================================================== */
.certs{ padding: 70px 0; background: var(--paper); }
.certs-title{ color: var(--gray-500); font-size: .85rem; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 34px; }
.certs-row{ display: flex; align-items: center; justify-content: center; gap: 56px; flex-wrap: wrap; }
.certs-row img{ height: 62px; width: auto; filter: grayscale(35%); opacity: .85; transition: filter .4s var(--ease), opacity .4s var(--ease), transform .4s var(--ease); }
.certs-row img:hover{ filter: grayscale(0%); opacity: 1; transform: translateY(-3px); }

/* ==========================================================================
   CLIENT ACCESS / LOGIN
   ========================================================================== */
.client-access{ background: var(--gray-100); }
.access-grid{ display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.access-list{ margin-top: 22px; display: flex; flex-direction: column; gap: 12px; }
.access-list li{
  position: relative; padding-left: 28px; color: var(--gray-700); font-size: .95rem;
}
.access-list li::before{
  content: ''; position: absolute; left: 0; top: 6px; width: 16px; height: 16px;
  border-radius: 50%; background: var(--maroon-700);
}
.access-list li::after{
  content: ''; position: absolute; left: 5.5px; top: 10.5px; width: 5px; height: 8px;
  border-right: 2px solid var(--gold); border-bottom: 2px solid var(--gold); transform: rotate(45deg);
}

.login-card{
  background: var(--white); border-radius: var(--radius); padding: 38px;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(0,0,0,.05);
}
.login-card-head{ display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.login-icon{
  width: 44px; height: 44px; border-radius: 12px; background: var(--maroon-700); color: var(--gold);
  display: flex; align-items: center; justify-content: center; flex: none;
}
.login-icon svg{ width: 22px; height: 22px; }
.login-card-head h3{ margin: 0; color: var(--maroon-700); }
.login-card-head small{ color: var(--gray-500); font-size: .78rem; }

.field{ display: flex; flex-direction: column; gap: 7px; margin-bottom: 18px; }
.field span{ font-size: .8rem; font-weight: 600; color: var(--ink); }
.field input, .field textarea{
  border: 1.5px solid var(--gray-300); border-radius: 10px; padding: 12px 14px;
  font-size: .92rem; background: var(--white); color: var(--ink);
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.field input:focus, .field textarea:focus{
  outline: none; border-color: var(--maroon-700); box-shadow: 0 0 0 4px rgba(123,18,31,.1);
}
.password-wrap{ position: relative; }
.password-wrap input{ width: 100%; padding-right: 44px; }
.toggle-pass{
  position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  width: 32px; height: 32px; border: none; background: none; color: var(--gray-500);
  display: flex; align-items: center; justify-content: center; border-radius: 8px;
  transition: color .3s var(--ease), background .3s var(--ease);
}
.toggle-pass:hover{ color: var(--maroon-700); background: var(--gray-100); }
.toggle-pass svg{ width: 20px; height: 20px; }

.remember{ display: flex; align-items: center; gap: 8px; font-size: .85rem; color: var(--gray-700); margin-bottom: 22px; }
.remember input{ accent-color: var(--maroon-700); width: 15px; height: 15px; }

.form-note{
  font-size: .8rem; color: var(--gray-500); text-align: center; margin: 14px 0 0;
  min-height: 1.2em;
}
.form-note.success{ color: #1c7a45; font-weight: 600; }
.form-note.error{ color: #b0272e; font-weight: 600; }
/* Campo trampa anti-spam: invisible y fuera del flujo para personas, pero
   presente en el DOM para que los bots de formularios lo completen. */
.hp-field{
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; left: -9999px;
}
/* Widget de reCAPTCHA: centrado y con margen propio dentro del formulario. */
.recaptcha-wrap{
  display: flex; justify-content: center; margin: 4px 0 2px;
  transform: scale(.95); transform-origin: center;
}
.recaptcha-wrap iframe{ max-width: 100%; }

.forgot-link{
  display: block; text-align: center; margin-top: 10px; font-size: .82rem;
  color: var(--maroon-700); font-weight: 600; text-decoration: underline; text-underline-offset: 3px;
}

/* shake animation for empty submit */
@keyframes shake{
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-4px); }
  40%, 60% { transform: translateX(4px); }
}
.shake{ animation: shake .5s; }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact{ background: var(--paper); }
.contact-grid{ display: grid; grid-template-columns: .9fr 1.1fr; gap: 60px; }
.contact-items{ display: flex; flex-direction: column; gap: 16px; margin-top: 28px; }
.contact-item{
  display: flex; align-items: center; gap: 14px; font-size: .92rem; color: var(--ink);
  padding: 14px 16px; border-radius: 12px; background: var(--gray-100);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
a.contact-item:hover{ background: var(--maroon-700); color: var(--white); transform: translateX(4px); }
.contact-icon{
  width: 36px; height: 36px; border-radius: 10px; background: var(--white); color: var(--maroon-700);
  display: flex; align-items: center; justify-content: center; flex: none;
  transition: background .3s var(--ease), color .3s var(--ease);
}
a.contact-item:hover .contact-icon{ background: var(--gold); color: var(--maroon-900); }
.contact-icon svg{ width: 18px; height: 18px; }

.contact-form{
  background: var(--white); border: 1px solid rgba(0,0,0,.06); border-radius: var(--radius);
  padding: 36px; box-shadow: var(--shadow-soft);
}
.form-row{ display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{ background: var(--maroon-900); color: rgba(255,255,255,.8); padding: 56px 0 30px; }
.footer-inner{ display: flex; flex-direction: column; align-items: center; text-align: center; gap: 14px; }
.brand-footer .brand-logo{ height: 52px; }
.footer-tag{ text-transform: uppercase; letter-spacing: .2em; font-size: .72rem; color: rgba(255,255,255,.55); margin: 0; }
.footer-nav{ display: flex; gap: 26px; flex-wrap: wrap; justify-content: center; margin: 14px 0; }
.footer-nav a{ font-size: .85rem; color: rgba(255,255,255,.75); transition: color .3s var(--ease); }
.footer-nav a:hover{ color: var(--gold); }
.footer-copy{ font-size: .76rem; color: rgba(255,255,255,.45); margin: 10px 0 0; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 980px){
  .about-grid, .access-grid, .contact-grid{ grid-template-columns: 1fr; }
  .about-media{ position: static; margin-bottom: 20px; }
  .services-grid{ grid-template-columns: repeat(2, 1fr); }
  .pillars{ grid-template-columns: 1fr; }
}

@media (max-width: 760px){
  .section{ padding: 76px 0; }
  .main-nav{
    position: fixed; inset: 0 0 0 auto; width: min(78vw, 320px); height: 100vh;
    background: var(--maroon-800); flex-direction: column; align-items: flex-start;
    padding: 100px 32px 32px; gap: 26px;
    transform: translateX(100%); transition: transform .45s var(--ease);
  }
  .main-nav.open{ transform: translateX(0); }
  .main-nav a{ color: var(--white); font-size: 1.05rem; }
  .nav-cta{ margin-top: 10px; }
  .nav-toggle{ display: flex; }
  .hero-stats{ gap: 30px; }
  .services-grid{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .certs-row{ gap: 32px; }
  .quality-bg{ background-attachment: scroll; }
}