/* ===== CSS VARIABLES ===== */
:root {
  /* Light theme colors */
  --primary-color: #3b82f6;
  --primary-hover: #2563eb;
  --primary-light: #dbeafe;
  --secondary-color: #8b5cf6;
  --secondary-hover: #7c3aed;
  --secondary-light: #ede9fe;
  --accent-color: #06b6d4;
  --accent-hover: #0891b2;
  --accent-light: #cffafe;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* Background colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-overlay: rgba(255, 255, 255, 0.95);
  
  /* Text colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  
  /* Border colors */
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;
  
  /* Shadow */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* Dark theme colors */
[data-theme="dark"] {
  /* Enhanced dark theme colors */
  --primary-color: #60a5fa;
  --primary-hover: #3b82f6;
  --primary-light: #1e3a8a;
  --secondary-color: #a78bfa;
  --secondary-hover: #8b5cf6;
  --secondary-light: #4c1d95;
  --accent-color: #22d3ee;
  --accent-hover: #06b6d4;
  --accent-light: #164e63;
  
  --bg-primary: #020617;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --bg-card: #0f172a;
  --bg-overlay: rgba(15, 23, 42, 0.95);
  
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  --border-color: #1e293b;
  --border-hover: #334155;
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

/* ===== RESET & BASE STYLES ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Accessibility: Skip to content */
.skip-link {
  position: absolute;
  top: -9999px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary-color);
  color: var(--text-inverse);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  z-index: 9999;
  text-decoration: none;
  font-weight: 600;
  transition: top var(--transition-fast);
  box-shadow: var(--shadow-lg);
}

.skip-link:focus {
  top: 0;
  outline: none;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

body.menu-open {
  overflow: hidden;
  position: fixed;
  width: 100%;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition-fast);
}

input, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: var(--font-size-base);
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background-color: #1d4ed8;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

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

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== MODERN NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.95) 100%);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  z-index: 1000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] .navbar {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.95) 100%);
  border-bottom: 1px solid rgba(71, 85, 105, 0.3);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.25);
}

.navbar.scrolled {
  height: 100px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(15, 23, 42, 0.98);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  padding: 0 var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}

/* Brand Section */
.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 1001;
  flex-shrink: 0;
}

.brand-logo {
  height: 90px;
  width: auto;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
}

.brand-logo:hover {
  transform: scale(1.05) rotate(2deg);
  filter: drop-shadow(0 6px 20px rgba(0, 0, 0, 0.15));
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-text h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.025em;
}

.brand-text span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary-color);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Navigation Links */
.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-secondary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.nav-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
}

.nav-item:hover::before,
.nav-item.active::before {
  width: 100%;
}

.nav-item:hover,
.nav-item.active {
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(var(--primary-rgb), 0.3);
}

/* Action Buttons */
.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  z-index: 1001;
}

.action-btn {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-xl);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.action-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  transform: translate(-50%, -50%);
  z-index: -1;
}

.action-btn:hover::before {
  width: 120%;
  height: 120%;
}

.action-btn:hover {
  color: white;
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 25px rgba(var(--primary-rgb), 0.3);
  border-color: var(--primary-color);
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--bg-tertiary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  gap: 4px;
}

.hamburger-line {
  width: 24px;
  height: 3px;
  background-color: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-toggle:hover {
  background: var(--primary-color);
  transform: scale(1.05);
}

.mobile-toggle:hover .hamburger-line {
  background-color: white;
}

.lang-text {
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* ===== MODERN HERO SECTION ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-background-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(15, 23, 42, 0.85) 0%,
    rgba(30, 41, 59, 0.75) 25%,
    rgba(51, 65, 85, 0.65) 50%,
    rgba(30, 41, 59, 0.75) 75%,
    rgba(15, 23, 42, 0.85) 100%
  );
  z-index: 1;
}

[data-theme="dark"] .hero-background-overlay {
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.9) 0%,
    rgba(15, 23, 42, 0.8) 25%,
    rgba(30, 41, 59, 0.7) 50%,
    rgba(15, 23, 42, 0.8) 75%,
    rgba(0, 0, 0, 0.9) 100%
  );
}

.hero-carousel {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.carousel-slide {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--spacing-3xl) var(--spacing-lg);
  max-width: 1000px;
  margin: 0 auto;
  position: relative;
  text-align: center;
}

.carousel-slide.active {
  display: flex;
  flex-direction: column;
}

.slide-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.slide-content h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  color: white;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  animation: fadeInUp 1s ease-out;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.slide-content p {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.2s both;
  line-height: 1.6;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  max-width: 600px;
}

.slide-content p:first-of-type {
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-shadow: 0 2px 15px rgba(var(--accent-rgb), 0.5);
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  animation: fadeInUp 1s ease-out 0.4s both;
  flex-wrap: wrap;
  justify-content: center;
}

.carousel-indicators {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-md);
}

.indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--text-muted);
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.indicator.active {
  background-color: var(--primary-color);
  transform: scale(1.2);
}

.indicator:hover {
  background-color: var(--primary-color);
  transform: scale(1.1);
}

/* Carousel Controls */
.carousel-controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--spacing-xl);
  pointer-events: none;
  z-index: 10;
}

.carousel-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 2px solid rgba(255, 255, 255, 0.2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
  opacity: 0.7;
}

.carousel-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: scale(1.1);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.carousel-btn:active {
  transform: scale(0.95);
}

[data-theme="dark"] .carousel-btn {
  background: rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .carousel-btn:hover {
  background: rgba(0, 0, 0, 0.5);
  border-color: rgba(255, 255, 255, 0.3);
}





/* ===== ABOUT SECTION ===== */
.about {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.about-card {
  background-color: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
}

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

.card-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-size: var(--font-size-2xl);
}

.about-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.about-card p {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== IMPACT SECTION ===== */
.impact-section {
  padding: var(--spacing-3xl) 0;
  background-color: var(--primary-color);
  color: white;
  margin-top: 0;
  position: relative;
  overflow: hidden;
}

.impact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(0,0,0,0.1) 0%, rgba(255,255,255,0.1) 100%);
  pointer-events: none;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
  position: relative;
  z-index: 1;
}

.impact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  background-color: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: transform var(--transition-normal);
}

.impact-item:hover {
  transform: translateY(-5px);
  background-color: rgba(255, 255, 255, 0.15);
}

.impact-icon {
  font-size: 2.5rem;
  color: var(--accent-light);
  margin-bottom: var(--spacing-sm);
}

.impact-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: white;
}

.impact-label {
  font-size: 1.1rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== RESEARCHERS SECTION ===== */
.researchers {
  padding: var(--spacing-3xl) 0;
}

.search-container {
  margin-bottom: var(--spacing-xl);
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.search-box {
  position: relative;
  max-width: 400px;
  width: 100%;
}

.search-box i {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 2.5rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.filter-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-lg);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

.researchers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.researcher-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.researcher-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto var(--spacing-lg);
  overflow: hidden;
  border: 0 solid var(--primary-color);
  flex-shrink: 0;
}

.researcher-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.researcher-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  min-height: 3.2em; /* Altura mínima para alineación básica */
  line-height: 1.6;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.researcher-degree {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
  flex-shrink: 0;
}

.research-line {
  background-color: var(--bg-tertiary);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: var(--spacing-md);
  min-height: 3.2em; /* Altura mínima en lugar de fija */
  line-height: 1.6;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.researcher-projects {
  margin-top: auto; /* Empuja hacia abajo si hay espacio extra */
  display: flex;
  flex-direction: column;
  width: 100%;
}

.researcher-projects h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  flex-shrink: 0;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  justify-content: center;
  align-content: flex-start;
}

.project-tag {
  background-color: var(--accent-color);
  color: var(--text-inverse);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* ===== STUDENTS SECTION ===== */
.students {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.students-tabs {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.tab-btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tab-btn:hover,
.tab-btn.active {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ===== NO RESULTS MESSAGE ===== */
.no-results {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-secondary);
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  width: 100%;
  grid-column: 1 / -1;
}

.no-results i {
  font-size: var(--font-size-3xl);
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  display: block;
}

.no-results p {
  font-size: var(--font-size-lg);
  font-weight: 500;
}

/* ===== STUDENTS GRID ===== */
.students-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.student-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-normal);
  height: 520px;
  display: flex;
  flex-direction: column;
}

.student-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.student-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto var(--spacing-md);
  overflow: hidden;
  border: 0 solid var(--secondary-color);
  flex-shrink: 0;
}

.student-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.student-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.student-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
  height: 3.2em;
  line-height: 1.6;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.student-program {
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--primary-color);
}

.student-year {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
}

.student-thesis {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--border-color);
}

.thesis-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.4;
  font-size: var(--font-size-xs);
  text-align: left;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  line-clamp: 4;
  -webkit-box-orient: vertical;
}

.thesis-advisors {
  margin-top: auto;
}

.thesis-advisor,
.thesis-co-advisor {
  font-size: var(--font-size-xs);
  color: var(--secondary-color);
  font-weight: 200;
  text-align: left;
}

.thesis-advisor:last-child,
.thesis-co-advisor:last-child {
  margin-bottom: 0;
}

/* ===== PROJECTS SECTION ===== */
.projects {
  padding: var(--spacing-3xl) 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border-left: 4px solid var(--primary-color);
  display: flex;
  flex-direction: column;
}

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

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
  flex-shrink: 0;
}

.project-status {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
}

.project-status.active {
  background-color: var(--success-color);
  color: var(--text-inverse);
}

.project-status.completed {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

.project-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  height: 4.8em; /* Altura fija para 3 líneas */
  line-height: 1.6;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  height: 9.6em; /* Altura fija para 6 líneas */
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  line-clamp: 6;
  -webkit-box-orient: vertical;
}

.project-participants {
  margin-bottom: var(--spacing-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-participants h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  flex-shrink: 0;
}

.participants-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  height: 8em; /* Altura fija para 5 líneas */
  overflow: hidden;
  align-content: flex-start;
}

.participant-tag {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
}

.project-dates {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.date-label {
  font-weight: 600;
  color: var(--text-secondary);
}

/* ===== PUBLICATIONS SECTION ===== */
.publications {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.publications-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.publication-item {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.publication-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.publication-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.publication-type {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
}

.publication-type.article {
  background-color: var(--primary-color);
  color: var(--text-inverse);
}

.publication-type.chapter {
  background-color: var(--secondary-color);
  color: var(--text-inverse);
}

.publication-type.conference {
  background-color: var(--accent-color);
  color: var(--text-inverse);
}

.publication-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.publication-authors {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.publication-details {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.publication-year {
  color: var(--text-muted);
  font-weight: 500;
}

.publication-link {
  color: var(--primary-color);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.publication-link:hover {
  text-decoration: underline;
}

/* ===== CONTACT SECTION ===== */
.contact {
  padding: var(--spacing-3xl) 0;
  background-color: var(--bg-secondary);
}

.contact .contact-content {
  margin: 0 auto;
}

.contact .contact-info-section {
  margin-top: var(--spacing-xl);
}

.contact .contact-main-info {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-3xl);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.contact .contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.contact .contact-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.contact .contact-item:first-child {
  padding-top: 0;
}

.contact .contact-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 200px;
  flex-shrink: 0;
}

.contact .contact-label i {
  width: 24px;
  height: 24px;
  color: var(--primary-color);
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact .contact-label h4 {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.contact .contact-value {
  flex: 1;
  color: var(--text-secondary);
}

.contact .contact-value p {
  margin: 0 0 var(--spacing-xs) 0;
}

.contact .contact-value p:last-child {
  margin-bottom: 0;
}

.contact .contact-link {
  color: var(--primary-color);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact .contact-link:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.contact .address-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.contact .address-details .institution {
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-md);
}

.contact .address-details .department {
  font-weight: 500;
  color: var(--text-secondary);
  font-style: italic;
}

.contact .address-details .street,
.contact .address-details .location,
.contact .address-details .postal-code {
  color: var(--text-secondary);
}

.contact .address-details .location {
  font-weight: 500;
}

/* ===== FOOTER ===== */
.footer {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(37, 99, 235, 0.05) 100%);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-main {
  max-width: 100%;
}

.footer-branding {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
  align-items: center;
}

.footer-brand-entity {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer-logo-image {
  height: 60px;
  width: auto;
  display: block;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.1));
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.footer-brand-entity:hover .footer-logo-image {
  transform: scale(1.05);
}

.footer-brand-entity h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

.footer-brand-entity span {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.3;
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
  position: relative;
}

.footer-section h4::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 1px;
}

.footer-section p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  padding: var(--spacing-xs) 0;
  position: relative;
  display: inline-block;
}

.footer-links a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--primary-color);
  transition: width var(--transition-fast);
}

.footer-links a:hover {
  color: var(--primary-color);
  transform: translateX(5px);
}

.footer-links a:hover::before {
  width: 100%;
}

/* Footer right column wraps links and contact stacked */
.footer-right {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.social-link {
  width: 45px;
  height: 45px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.social-link:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
}

.footer-contact {
  display: flex;
  flex-direction: column;
}

.footer-contact .contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xs) 0;
  border: none;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-contact .contact-item:hover {
  color: var(--primary-color);
}

.footer-contact .contact-item i {
  width: 20px;
  color: var(--primary-color);
  font-size: var(--font-size-base);
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-color);
}

.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.footer-bottom-content p {
  color: var(--text-muted);
  margin: 0;
}

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

.footer-bottom-links a {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
  text-decoration: none;
}

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

/* ===== LOADING SPINNER ===== */
.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ===== BACK TO TOP BUTTON ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background-color: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 99;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--primary-hover);
  transform: translateY(-5px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .carousel-slide.active {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .slide-content {
    order: 2;
  }
  
  .slide-image {
    order: 1;
  }
  
  .contact .contact-content {
    grid-template-columns: 1fr;
  }
}

/* ===== RESPONSIVE NAVBAR ===== */
@media (max-width: 1024px) {
  .navbar-nav {
    gap: var(--spacing-xs);
  }
  
  .nav-item {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
  }
  
  .navbar-container {
    padding: 0 var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  .navbar {
    height: 75px;
  }
  
  .navbar-container {
    padding: 0 var(--spacing-md);
  }
  
  .brand-logo {
    height: 50px;
  }
  
  .brand-text {
    display: none;
  }
  
  .navbar-nav {
    position: fixed;
    top: 75px;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.98) 100%);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.15);
    transform: translateY(-100%);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    border-top: 1px solid rgba(226, 232, 240, 0.8);
    gap: var(--spacing-md);
    opacity: 0;
    visibility: hidden;
  }
  
  [data-theme="dark"] .navbar-nav {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.98) 0%, rgba(30, 41, 59, 0.98) 100%);
    border-top: 1px solid rgba(71, 85, 105, 0.3);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
  }
  
  .navbar-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-item {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-base);
    text-align: center;
    background: var(--bg-secondary);
    margin: var(--spacing-xs) 0;
    transform: translateY(30px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  }
  
  .navbar-nav.active .nav-item {
    transform: translateY(0);
    opacity: 1;
  }
  
  .navbar-nav.active .nav-item:nth-child(1) { transition-delay: 0.1s; }
  .navbar-nav.active .nav-item:nth-child(2) { transition-delay: 0.15s; }
  .navbar-nav.active .nav-item:nth-child(3) { transition-delay: 0.2s; }
  .navbar-nav.active .nav-item:nth-child(4) { transition-delay: 0.25s; }
  .navbar-nav.active .nav-item:nth-child(5) { transition-delay: 0.3s; }
  
  .mobile-toggle {
    display: flex;
  }
  
  .mobile-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .mobile-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: scale(0);
  }
  
  .mobile-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
  }
  
  .navbar-actions {
    gap: var(--spacing-xs);
  }
  
  .action-btn {
    width: 45px;
    height: 45px;
  }
  
  .slide-content h1 {
    font-size: var(--font-size-3xl);
  }
  
  .slide-content p:first-of-type {
    font-size: var(--font-size-lg);
  }
  
  .section-header h2 {
    font-size: var(--font-size-3xl);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .about-content {
    grid-template-columns: 1fr;
  }
  
  .researchers-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .students-grid {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  }
  
  .search-container {
    flex-direction: column;
    align-items: center;
  }
  
  .filter-buttons {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .navbar-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .brand-logo {
    height: 50px;
  }
  
  .action-btn {
    width: 42px;
    height: 42px;
  }
  
  .mobile-toggle {
    width: 42px;
    height: 42px;
  }
  
  .slide-content h1 {
    font-size: var(--font-size-2xl);
  }
  
  .section-header h2 {
    font-size: var(--font-size-2xl);
  }
  
  .carousel-slide.active {
    padding: var(--spacing-xl) var(--spacing-md);
  }
  
  .about-card,
  .researcher-card,
  .project-card {
    padding: var(--spacing-lg);
  }
  
  .contact .contact-main-info {
    padding: var(--spacing-xl);
  }
  
  .contact .contact-item {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
  }
  
  .contact .contact-label {
    min-width: auto;
    gap: var(--spacing-sm);
  }
  
  .contact .contact-label i {
    width: 20px;
    height: 20px;
    font-size: var(--font-size-md);
  }
  
  .students-grid {
    grid-template-columns: 1fr;
  }
  
  .publication-details {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }
  
  .footer-main {
    max-width: 100%;
  }

  .footer-brand-entity {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }
  


  .footer-right {
    align-items: center;
  }
  
  .footer-section h4::after {
    left: 50%;
    transform: translateX(-50%);
  }
  
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .footer-bottom-links {
    justify-content: center;
  }
}

/* ===== ANIMATIONS ===== */
@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(1deg);
  }
  66% {
    transform: translateY(-10px) rotate(-1deg);
  }
}

@keyframes gradientShift {
  0%, 100% {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
  50% {
    opacity: 0.8;
    transform: scale(1.1) rotate(2deg);
  }
}



/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  html {
    scroll-behavior: auto;
  }
}

/* Focus styles for keyboard navigation */
button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-secondary: #000000;
  }
  
  [data-theme="dark"] {
    --border-color: #ffffff;
    --text-secondary: #ffffff;
  }
}