/* ============================================
   1. VARIABLES & RESET
   ============================================ */
:root {
  --c-bg: #020617;
  --c-surface: #0f172a;
  --c-surface-light: #1e293b;
  --c-primary: #06b6d4;        /* neón cian */
  --c-primary-glow: rgba(6, 182, 212, 0.35);
  --c-secondary: #10b981;      /* esmeralda */
  --c-secondary-glow: rgba(16, 185, 129, 0.35);
  --c-accent: #34d399;
  --c-text: #f8fafc;
  --c-muted: #94a3b8;
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --radius: 1rem;
  --radius-sm: 0.5rem;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

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

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

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  background: none;
  border: none;
  color: inherit;
}

/* ============================================
   2. UTILITIES & LAYOUT
   ============================================ */
.container {
  width: min(1200px, 92vw);
  margin-inline: auto;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 28rem), 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
}

.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  max-width: 50ch;
  margin-inline: auto;
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-primary);
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw + 0.5rem, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--c-muted);
  font-size: 1.05rem;
  max-width: 44ch;
  margin-inline: auto;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   3. GLASSMORPHISM
   ============================================ */
.glass {
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid rgba(6, 182, 212, 0.12);
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.glass:hover {
  border-color: rgba(6, 182, 212, 0.3);
}

/* ============================================
   4. NAVIGATION
   ============================================ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: background 0.3s, box-shadow 0.3s;
}

.site-header.scrolled {
  background: rgba(2, 6, 23, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 rgba(6, 182, 212, 0.1);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--c-text);
}

.logo i {
  color: var(--c-secondary);
  font-size: 1.35rem;
}

.nav-list {
  display: flex;
  gap: 0.25rem;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--c-muted);
  transition: color 0.2s;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1rem;
  right: 1rem;
  height: 2px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--c-text);
}

.nav-link:hover::after,
.nav-link:focus::after {
  transform: scaleX(1);
}

.mobile-toggle {
  display: none;
  width: 32px;
  height: 32px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  z-index: 1001;
}

.mobile-toggle .bar {
  display: block;
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ============================================
   5. HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: calc(var(--header-height) + 2rem) 0 4rem;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbFloat 8s ease-in-out infinite;
}

.glow-orb.green {
  width: 40vw;
  height: 40vw;
  max-width: 500px;
  max-height: 500px;
  background: var(--c-secondary);
  top: 10%;
  right: -5%;
  animation-delay: -2s;
}

.glow-orb.cyan {
  width: 35vw;
  height: 35vw;
  max-width: 420px;
  max-height: 420px;
  background: var(--c-primary);
  bottom: 5%;
  left: -5%;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  align-items: center;
  min-height: 60vh;
}

.hero-text {
  max-width: 44ch;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw + 0.5rem, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  text-wrap: balance;
}

.text-cyan {
  color: var(--c-primary);
  text-shadow: 0 0 30px var(--c-primary-glow);
}

.text-emerald {
  color: var(--c-secondary);
  text-shadow: 0 0 30px var(--c-secondary-glow);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--c-muted);
  margin-bottom: 2rem;
  max-width: 38ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.2s, box-shadow 0.3s, background 0.3s;
}

.btn-primary {
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color: #020617;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.25);
}

.btn-primary:hover,
.btn-primary:focus {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(6, 182, 212, 0.45);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text);
  border: 1px solid rgba(6, 182, 212, 0.35);
  backdrop-filter: blur(4px);
}

.btn-ghost:hover,
.btn-ghost:focus {
  border-color: var(--c-primary);
  background: rgba(6, 182, 212, 0.08);
  box-shadow: 0 0 20px var(--c-primary-glow);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.mouse {
  display: block;
  width: 22px;
  height: 36px;
  border: 2px solid rgba(148, 163, 184, 0.5);
  border-radius: 12px;
  position: relative;
}

.wheel {
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 6px;
  background: var(--c-primary);
  border-radius: 2px;
  animation: scrollWheel 1.8s ease infinite;
}

/* ============================================
   6. DNA HELIX VISUAL
   ============================================ */
.dna-helix {
  position: absolute;
  top: 50%;
  left: 60%;
  width: 220px;
  height: 420px;
  transform: translate(-50%, -50%) rotateY(-20deg);
  transform-style: preserve-3d;
  perspective: 1000px;
  animation: helixFloat 6s ease-in-out infinite;
}

.dna-rung {
  position: absolute;
  top: calc(var(--i) * 18px);
  left: 50%;
  width: 120px;
  height: 2px;
  transform: translateX(-50%) rotateY(calc(var(--i) * 36deg));
  transform-style: preserve-3d;
  transform-origin: center;
}

.dna-node {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  top: -6px;
  background: radial-gradient(circle at 35% 35%, var(--c-primary), var(--c-secondary));
  box-shadow: 0 0 14px var(--c-primary-glow), inset 0 0 6px rgba(255, 255, 255, 0.6);
}

.dna-node.left {
  left: -7px;
}

.dna-node.right {
  right: -7px;
}

.dna-connector {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.25), rgba(16, 185, 129, 0.6), rgba(6, 182, 212, 0.25));
  border-radius: 2px;
}

/* ============================================
   7. SISTEMAS / ABOUT
   ============================================ */
.section-sistemas {
  background: radial-gradient(1200px 600px at 20% 0%, rgba(16, 185, 129, 0.08), transparent),
              radial-gradient(1000px 500px at 80% 100%, rgba(6, 182, 212, 0.08), transparent);
}

.card-feature {
  padding: 2rem;
  text-align: center;
}

.card-feature .card-icon {
  width: 56px;
  height: 56px;
  margin-inline: auto;
  margin-bottom: 1.25rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15), rgba(16, 185, 129, 0.15));
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--c-primary);
  font-size: 1.35rem;
}

.card-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.card-text {
  color: var(--c-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* ============================================
   8. PROGRAMAS
   ============================================ */
.section-programas {
  position: relative;
}

.section-programas::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.03), transparent 40%);
  pointer-events: none;
}

.card-program {
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.card-program::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--c-primary), var(--c-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.card-program:hover::before {
  transform: scaleX(1);
}

.card-program:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45), 0 0 30px rgba(6, 182, 212, 0.1);
}

.program-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.program-duration {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-secondary);
  background: rgba(16, 185, 129, 0.1);
  padding: 0.35rem 0.7rem;
  border-radius: 9999px;
}

.program-icon {
  font-size: 1.5rem;
  color: var(--c-primary);
  opacity: 0.8;
}

.program-meta {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.program-meta li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--c-muted);
}

.program-meta i {
  color: var(--c-secondary);
  font-size: 0.8rem;
}

/* ============================================
   9. BIO LAB
   ============================================ */
.section-bio-lab {
  background: radial-gradient(ellipse at 50% 0%, rgba(6, 182, 212, 0.06), transparent 60%);
}

.card-lab {
  overflow: hidden;
  padding: 0;
}

.card-lab:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
}

.card-lab:hover .lab-thumb {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.25), rgba(16, 185, 129, 0.25));
}

.lab-thumb {
  height: 160px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12), rgba(16, 185, 129, 0.12));
  border-bottom: 1px solid rgba(6, 182, 212, 0.1);
  transition: background 0.4s;
}

.lab-icon {
  font-size: 2.2rem;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lab-content {
  padding: 1.5rem;
}

.lab-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.lab-platform {
  font-size: 0.8rem;
  color: var(--c-muted);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.lab-platform span {
  color: var(--c-accent);
}

.lab-desc {
  color: var(--c-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ============================================
   10. CONTACTO
   ============================================ */
.section-contacto {
  position: relative;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 1.5rem;
  align-items: start;
}

.contact-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.info-block {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.info-block i {
  font-size: 1.25rem;
  color: var(--c-primary);
  margin-top: 0.2rem;
}

.info-block h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
  color: var(--c-text);
}

.info-block p,
.info-block a {
  color: var(--c-muted);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.info-block a:hover {
  color: var(--c-primary);
}

.contact-map {
  margin-top: auto;
  height: 120px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(16, 185, 129, 0.1));
  border: 1px solid rgba(6, 182, 212, 0.15);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

.contact-map::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, transparent, transparent 19px, rgba(6, 182, 212, 0.08) 20px),
              repeating-linear-gradient(90deg, transparent, transparent 19px, rgba(6, 182, 212, 0.08) 20px);
  opacity: 0.6;
}

.map-pin {
  position: relative;
  z-index: 1;
  color: var(--c-secondary);
  font-size: 1.75rem;
  animation: pinBounce 2s ease-in-out infinite;
}

.contact-form {
  padding: 2.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.form-row .form-group {
  margin-bottom: 0;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-muted);
}

.form-group input,
.form-group textarea {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(6, 182, 212, 0.2);
  background: rgba(6, 182, 212, 0.03);
  color: var(--c-text);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
  font-family: var(--font-main);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(148, 163, 184, 0.6);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--c-primary);
  background: rgba(6, 182, 212, 0.06);
  box-shadow: 0 0 0 4px rgba(6, 182, 212, 0.1), 0 0 20px rgba(6, 182, 212, 0.15);
}

.btn-submit {
  width: 100%;
}

.form-status {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  min-height: 1.5rem;
}

/* ============================================
   11. FOOTER
   ============================================ */
.site-footer {
  border-top: 1px solid rgba(6, 182, 212, 0.1);
  padding: 3rem 0 2.5rem;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.6), transparent);
}

.footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 1.5rem;
}

.footer-brand p {
  color: var(--c-muted);
  font-size: 0.92rem;
  max-width: 28ch;
  margin-top: 0.5rem;
}

.footer-brand .logo {
  justify-content: center;
  font-size: 1.35rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.75rem;
  justify-content: center;
}

.footer-links a {
  color: var(--c-muted);
  font-size: 0.92rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--c-primary);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  justify-content: center;
  font-size: 0.82rem;
  color: rgba(148, 163, 184, 0.7);
}

.footer-legal a:hover {
  color: var(--c-text);
}

/* ============================================
   12. KEYFRAMES
   ============================================ */
@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-20px, 30px); }
}

@keyframes helixFloat {
  0%, 100% { transform: translate(-50%, -50%) rotateY(-20deg) translateY(0); }
  50% { transform: translate(-50%, -50%) rotateY(-20deg) translateY(-12px); }
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

@keyframes pinBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

/* ============================================
   13. RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    inset: var(--header-height) 0 0 0;
    background: rgba(2, 6, 23, 0.97);
    backdrop-filter: blur(20px);
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.3s, transform 0.3s;
  }

  .main-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    gap: 0.75rem;
  }

  .nav-link {
    font-size: 1.15rem;
    padding: 0.75rem 0;
  }

  .dna-helix {
    opacity: 0.25;
    left: 50%;
  }

  .hero-content {
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-brand .logo {
    font-size: 1.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}