:root {
  /* Triadic color scheme */
  --primary-color: #0055b8; /* YPF blue */
  --secondary-color: #b80055; /* Magenta */
  --tertiary-color: #55b800; /* Green */
  
  /* Shades and tints */
  --primary-dark: #003d85;
  --primary-light: #3378cc;
  --secondary-dark: #85003d;
  --secondary-light: #cc3378;
  --tertiary-dark: #3d8500;
  --tertiary-light: #78cc33;
  
  /* Neutrals */
  --neutral-dark: #222222;
  --neutral-medium: #666666;
  --neutral-light: #e0e0e0;
  --neutral-lighter: #f7f7f7;
  
  /* Text colors */
  --text-dark: #333333;
  --text-medium: #555555;
  --text-light: #ffffff;
  
  /* Shadows */
  --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 6px 16px rgba(0, 0, 0, 0.12);
  --shadow-strong: 0 8px 24px rgba(0, 0, 0, 0.16);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Borders */
  --border-radius-small: 4px;
  --border-radius-medium: 8px;
  --border-radius-large: 16px;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  
  /* Container widths */
  --container-width: 1200px;
  --container-padding: 2rem;
}

/* Base styles */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Merriweather', serif;
  color: var(--text-dark);
  background-color: var(--neutral-lighter);
  line-height: 1.6;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  margin-top: 0;
  color: var(--neutral-dark);
  line-height: 1.3;
}

p {
  margin: 0 0 1.5rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius-small);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--neutral-lighter);
  box-shadow: var(--shadow-soft);
  z-index: 1000;
  transition: background-color var(--transition-medium);
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  max-height: 50px;
  width: auto;
}

.nav-menu {
  display: flex;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list li {
  margin-left: 1.5rem;
}

.nav-list a {
  color: var(--text-dark);
  font-family: 'Montserrat', sans-serif;
  font-weight: 500;
  font-size: 0.95rem;
  text-transform: uppercase;
  padding: 0.5rem 0;
  position: relative;
}

.nav-list a:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-medium);
}

.nav-list a:hover:after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  cursor: pointer;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--text-dark);
  transition: transform var(--transition-medium), opacity var(--transition-medium);
}

/* Hero Section */
.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin-top: 0;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  padding: var(--spacing-lg) 0;
  z-index: 2;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-light);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  color: var(--text-light);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Section Styles */
section {
  padding: var(--spacing-xl) 0;
  position: relative;
}

section:nth-child(even) {
  background-color: var(--neutral-lighter);
}

section:nth-child(odd) {
  background-color: white;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--neutral-dark);
}

.section-description {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  font-size: 1.1rem;
  color: var(--text-medium);
}

/* Button Styles */
.btn, 
button,
input[type="submit"] {
  display: inline-block;
  padding: 0.8rem 1.8rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--border-radius-medium);
  cursor: pointer;
  transition: all var(--transition-medium);
  border: none;
  outline: none;
}

.btn.primary {
  background-color: var(--primary-color);
  color: white;
  box-shadow: 0 4px 6px rgba(0, 85, 184, 0.2);
}

.btn.primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 85, 184, 0.3);
}

.btn.secondary {
  background-color: transparent;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn.secondary:hover {
  background-color: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* Cards styles */
.cards-container, 
.services-grid, 
.projects-grid, 
.testimonials-container, 
.news-grid, 
.partners-grid,
.research-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.card {
  background-color: white;
  border-radius: var(--border-radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.card-image {
  width: 100%;
  height: 250px;
  overflow: hidden;
  text-align: center;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  margin: 0 auto;
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-content {
  padding: var(--spacing-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.card-content h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
  color: var(--neutral-dark);
}

.card-content p {
  margin-bottom: 1.2rem;
  color: var(--text-medium);
}

/* Progress bars */
.progress-container {
  width: 100%;
  margin-top: auto;
  margin-bottom: 0.5rem;
}

.progress-bar {
  height: 8px;
  background-color: var(--neutral-light);
  border-radius: 4px;
  margin-bottom: 0.5rem;
  position: relative;
  overflow: hidden;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: var(--primary-color);
  width: 0;
  border-radius: 4px;
  transition: width 1.5s ease-out;
}

.progress-bar[data-progress="90"]::after {
  width: 90%;
}

.progress-bar[data-progress="85"]::after {
  width: 85%;
}

.progress-bar[data-progress="95"]::after {
  width: 95%;
}

.progress-container span {
  font-size: 0.85rem;
  color: var(--text-medium);
}

/* Map section */
.map-container {
  position: relative;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--border-radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
}

.map-container img {
  width: 100%;
  height: auto;
  display: block;
}

.overlay-text {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  padding: var(--spacing-md);
  color: white;
  text-align: center;
}

.overlay-text p {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  font-weight: 500;
}

.stats-container {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-sm);
  flex: 1;
  min-width: 150px;
  margin-bottom: var(--spacing-sm);
}

.stat-item h3 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.3rem;
}

.stat-item p {
  font-size: 1rem;
  color: var(--text-medium);
  margin-bottom: 0;
}

/* Resources section */
.recursos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.recurso-item {
  background-color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-medium);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-medium);
  text-align: center;
}

.recurso-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.recurso-item h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.recurso-item p {
  margin-bottom: 1.5rem;
}

/* Testimonials section */
.testimonials-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.testimonials-container .card {
  text-align: center;
}

.testimonials-container .card-image {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  margin: var(--spacing-md) auto 0;
}

.testimonials-container .card-image img {
  border-radius: 50%;
}

.client-type {
  color: var(--neutral-medium);
  font-style: italic;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-style: italic;
  position: relative;
  padding: 0 1rem;
}

.testimonial-text::before,
.testimonial-text::after {
  content: '"';
  font-size: 1.5rem;
  color: var(--primary-light);
}

.rating {
  color: var(--tertiary-color);
  font-size: 1.2rem;
  margin-top: 1rem;
}

/* Research section */
.research-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.research-item {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.research-item.reverse {
  flex-direction: row-reverse;
}

.research-item img {
  width: 500px;
  height: 300px;
  object-fit: cover;
  border-radius: var(--border-radius-medium);
  box-shadow: var(--shadow-medium);
}

.research-content {
  flex: 1;
}

.research-content h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

/* Partners section */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--spacing-md);
  text-align: center;
}

.partner-item {
  padding: var(--spacing-md);
  background-color: white;
  border-radius: var(--border-radius-medium);
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-medium);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.partner-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-medium);
}

.partner-item img {
  height: 120px;
  width: auto;
  margin: 0 auto var(--spacing-sm);
  object-fit: contain;
}

.partner-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.partner-item p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* News section */
.news-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.news-grid .card-content {
  text-align: left;
}

.date {
  display: block;
  color: var(--neutral-medium);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

/* Events section */
.events-container {
  max-width: 800px;
  margin: 0 auto;
}

.event-item {
  display: flex;
  margin-bottom: var(--spacing-md);
  background-color: white;
  border-radius: var(--border-radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-medium);
}

.event-item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-medium);
}

.event-date {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-width: 100px;
  padding: var(--spacing-sm);
  background-color: var(--primary-color);
  color: white;
  text-align: center;
}

.day {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
}

.month {
  font-size: 1rem;
  text-transform: uppercase;
}

.event-content {
  padding: var(--spacing-md);
  flex: 1;
}

.event-content h3 {
  margin-bottom: 0.5rem;
}

.event-location {
  font-size: 0.9rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 0.8rem;
}

/* Accolades section */
.accolades-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.accolade-item {
  max-width: 250px;
  text-align: center;
}

.accolade-item img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  margin: 0 auto var(--spacing-sm);
  border: 5px solid var(--neutral-light);
  transition: transform var(--transition-medium);
}

.accolade-item:hover img {
  transform: scale(1.05);
  border-color: var(--primary-light);
}

.accolade-item h3 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: var(--primary-color);
}

.accolade-item p {
  font-size: 0.9rem;
  color: var(--text-medium);
}

/* Contact section */
.contact-container {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.contact-info {
  flex: 1;
}

.info-item {
  margin-bottom: var(--spacing-md);
}

.info-item h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.info-item p {
  margin-bottom: 0.5rem;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-links a {
  color: var(--primary-color);
  font-weight: 500;
  margin-right: 15px;
  transition: color var(--transition-fast);
}

.social-links a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.contact-form {
  flex: 1;
  background-color: white;
  border-radius: var(--border-radius-medium);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-medium);
}

.contact-form h3 {
  margin-bottom: var(--spacing-md);
  text-align: center;
  color: var(--primary-color);
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--neutral-light);
  border-radius: var(--border-radius-small);
  font-family: 'Merriweather', serif;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary-color);
  outline: none;
}

.form-group.checkbox {
  display: flex;
  align-items: center;
}

.form-group.checkbox input {
  width: auto;
  margin-right: 0.5rem;
}

.form-group.checkbox label {
  margin-bottom: 0;
}

/* Footer styles */
.footer {
  background-color: var(--neutral-dark);
  color: white;
  padding: var(--spacing-lg) 0;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.footer-logo {
  flex: 1 1 300px;
}

.footer-logo img {
  margin-bottom: var(--spacing-sm);
}

.footer-logo p {
  font-size: 1.2rem;
  font-style: italic;
  color: var(--neutral-light);
}

.footer-links {
  flex: 3 1 600px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.footer-column {
  min-width: 150px;
  margin-bottom: var(--spacing-md);
}

.footer-column h3 {
  color: white;
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
}

.footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-column li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  color: var(--neutral-light);
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: white;
  text-decoration: underline;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--neutral-light);
}

/* Success page */
.success-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-lg);
}

.success-content {
  max-width: 600px;
}

.success-content h1 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.success-icon {
  font-size: 5rem;
  color: var(--tertiary-color);
  margin-bottom: var(--spacing-md);
}

/* Privacy & Terms pages */
.privacy-page,
.terms-page {
  padding-top: 120px;
  padding-bottom: var(--spacing-xl);
}

.privacy-content,
.terms-content {
  max-width: 800px;
  margin: 0 auto;
  background-color: white;
  border-radius: var(--border-radius-medium);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-soft);
}

.privacy-content h1,
.terms-content h1 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.privacy-content h2,
.terms-content h2 {
  color: var(--primary-dark);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

/* Responsive styles */
@media (max-width: 1024px) {
  :root {
    --container-padding: 1.5rem;
  }

  .hero h1 {
    font-size: 3rem;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .research-item {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .research-item.reverse {
    flex-direction: column;
  }

  .research-item img {
    width: 100%;
    height: auto;
  }

  .contact-container {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100%;
    background-color: white;
    box-shadow: var(--shadow-strong);
    transition: right var(--transition-medium);
    z-index: 1000;
    padding: 4rem 2rem;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
  }

  .nav-list li {
    margin: 1rem 0;
  }

  .hamburger {
    display: flex;
    z-index: 1001;
  }

  .hamburger.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
  }

  .event-item {
    flex-direction: column;
  }

  .event-date {
    padding: var(--spacing-xs);
    flex-direction: row;
    gap: 0.5rem;
  }

  .day, .month {
    font-size: 1.2rem;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .footer-logo {
    text-align: center;
  }

  .footer-links {
    justify-content: space-around;
  }
}

@media (max-width: 576px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
  }

  .cards-container, 
  .services-grid, 
  .projects-grid,
  .news-grid,
  .recursos-grid {
    grid-template-columns: 1fr;
  }

  .accolades-container {
    gap: var(--spacing-md);
  }

  .stats-container {
    flex-direction: column;
    align-items: center;
  }

  .stat-item {
    width: 100%;
    margin-bottom: var(--spacing-md);
  }
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* Read more links */
.btn.secondary {
  display: inline-block;
  margin-top: auto;
}

/* Utility classes */
.text-center {
  text-align: center;
}

.mt-auto {
  margin-top: auto;
}

.mb-0 {
  margin-bottom: 0;
}

.hidden {
  display: none;
}

.visible {
  opacity: 1;
  visibility: visible;
}