/* Complete redesign with sophisticated, modern aesthetic for physics education */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@500;600;700;800&display=swap");

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

:root {
  /* Sophisticated Color Palette */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-400: #94a3b8;
  --slate-200: #e2e8f0;
  --slate-50: #f8fafc;
  --white: #ffffff;

  /* Accent Colors */
  --blue-600: #2563eb;
  --cyan-500: #06b6d4;
  --emerald-500: #10b981;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Typography */
  --font-display: "Space Grotesk", sans-serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

body {
  font-family: var(--font-body);
  background: var(--slate-50);
  color: var(--slate-800);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Minimalist, professional navigation */
.navbar {
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  background: rgba(255, 255, 255, 0.95);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 80px;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo {
  width: 50px;
  height: 50px;
  border-radius: 8px;
  transition: transform 0.2s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: -0.025em;
}

.menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xs);
}

.menu li a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--slate-600);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  letter-spacing: -0.01em;
}

.menu li a:hover {
  color: var(--slate-900);
  background: var(--slate-50);
}

.menu li a.active {
  color: var(--slate-900);
  background: var(--slate-900);
  color: var(--white);
}

/* Clean, modern hero section with subtle gradient */
.hero {
  background: linear-gradient(180deg, var(--slate-900) 0%, var(--slate-800) 100%);
  color: var(--white);
  padding: clamp(4rem, 10vw, 8rem) var(--spacing-lg) clamp(5rem, 12vw, 10rem);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(6, 182, 212, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--slate-400);
  letter-spacing: -0.01em;
}

/* Removed wave, using clean separation */
.content-section {
  padding: var(--spacing-2xl) var(--spacing-lg);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--slate-900);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

/* Clean card layouts */
.intro-card {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  background: var(--white);
  padding: var(--spacing-2xl);
  border-radius: 16px;
  border: 1px solid var(--slate-200);
  margin-bottom: var(--spacing-2xl);
}

.intro-text h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  color: var(--slate-900);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.highlight-text {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--slate-700);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.intro-text p {
  margin-bottom: var(--spacing-md);
  color: var(--slate-600);
  line-height: 1.7;
}

.intro-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--slate-200);
}

/* Minimal branch cards with hover effects */
.physics-branches {
  margin-bottom: var(--spacing-2xl);
}

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

.branch-card {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.branch-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--slate-300);
}

.branch-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

.branch-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.branch-card p {
  color: var(--slate-600);
  line-height: 1.6;
  font-size: 0.9375rem;
}

/* Numbered importance items */
.importance-section {
  margin-top: var(--spacing-2xl);
}

.importance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.importance-item {
  background: var(--white);
  padding: var(--spacing-xl);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  transition: all 0.3s ease;
}

.importance-item:hover {
  box-shadow: var(--shadow-lg);
}

.importance-number {
  display: block;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--slate-400);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.05em;
}

.importance-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.importance-item p {
  color: var(--slate-600);
  line-height: 1.6;
  font-size: 0.9375rem;
}

/* School Page */
.school-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

.school-image-container {
  order: 2;
}

.school-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--slate-200);
}

.school-text {
  order: 1;
}

.school-text h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-md);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.school-description {
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

/* Mission Vision */
.mission-vision {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.mv-card {
  background: var(--white);
  padding: var(--spacing-2xl);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  transition: all 0.3s ease;
}

.mv-card:hover {
  box-shadow: var(--shadow-lg);
}

.mv-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

.mv-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.mv-card p {
  color: var(--slate-600);
  line-height: 1.7;
}

/* Physics Program */
.physics-program {
  background: var(--white);
  padding: var(--spacing-2xl);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  margin-bottom: var(--spacing-2xl);
}

.program-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-2xl);
}

.program-text h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.program-text p {
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.objectives-section {
  margin-top: var(--spacing-lg);
}

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

.objective-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.objective-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.objective-item h4 {
  color: var(--slate-900);
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  font-size: 1rem;
}

.objective-item p {
  color: var(--slate-600);
  font-size: 0.9375rem;
  line-height: 1.6;
}

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

.highlight-box {
  background: var(--slate-50);
  padding: var(--spacing-lg);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
}

.highlight-box h4 {
  font-family: var(--font-display);
  color: var(--slate-900);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.highlight-box ul {
  list-style: none;
}

.highlight-box li {
  padding: var(--spacing-xs) 0;
  color: var(--slate-600);
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
}

.highlight-box li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--slate-900);
  font-weight: 600;
}

/* Values */
.values-section {
  margin-top: var(--spacing-2xl);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
}

.value-card {
  background: var(--white);
  padding: var(--spacing-xl) var(--spacing-lg);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  text-align: center;
  transition: all 0.3s ease;
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--slate-300);
}

.value-emoji {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.value-card h4 {
  color: var(--slate-900);
  font-weight: 600;
  font-size: 1rem;
}

/* Simulations */
.simulations-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-2xl);
}

.simulations-intro h2 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-md);
  font-weight: 800;
  letter-spacing: -0.03em;
}

.intro-description {
  font-size: 1.125rem;
  color: var(--slate-600);
  line-height: 1.7;
}

.simulations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.simulation-card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--slate-200);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.simulation-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.simulation-preview {
  position: relative;
  overflow: hidden;
  height: 220px;
  background: var(--slate-100);
}

.simulation-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

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

.simulation-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.simulation-card:hover .simulation-overlay {
  opacity: 1;
}

.play-icon {
  font-size: 3rem;
  color: var(--white);
}

.simulation-content {
  padding: var(--spacing-xl);
}

.simulation-content h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.simulation-content p {
  color: var(--slate-600);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
  font-size: 0.9375rem;
}

.simulation-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.tag {
  background: var(--slate-100);
  color: var(--slate-700);
  padding: 0.375rem 0.875rem;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid var(--slate-200);
}

.simulation-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--slate-900);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all 0.2s ease;
}

.simulation-btn:hover {
  background: var(--slate-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.arrow {
  transition: transform 0.2s ease;
}

.simulation-btn:hover .arrow {
  transform: translateX(3px);
}

/* PhET Info */
.phet-info {
  background: var(--white);
  padding: var(--spacing-2xl);
  border-radius: 12px;
  border: 1px solid var(--slate-200);
  margin-top: var(--spacing-2xl);
}

.phet-info h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--slate-900);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.phet-description {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.phet-text p {
  color: var(--slate-600);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.visit-phet-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--slate-900);
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
  margin-top: var(--spacing-sm);
}

.visit-phet-btn:hover {
  background: var(--slate-800);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.phet-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--slate-200);
}

/* Minimal, professional footer */
#footer {
  background: var(--slate-900);
  color: var(--white);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

#footer h1 {
  text-align: center;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: var(--spacing-xl);
  letter-spacing: -0.02em;
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.Sedes {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: var(--spacing-xl);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.Sedes:hover {
  background: rgba(255, 255, 255, 0.08);
}

.Sedes p {
  margin: var(--spacing-sm) 0;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--slate-400);
}

.Sedes p:first-child {
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--white);
  margin-bottom: var(--spacing-md);
}

.redes.sociales {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.redes.sociales a {
  display: inline-block;
  margin: 0 var(--spacing-sm);
  padding: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  transition: all 0.2s ease;
}

.redes.sociales a:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1024px) {
  .intro-card,
  .school-intro,
  .program-content,
  .phet-description {
    grid-template-columns: 1fr;
  }

  .school-image-container {
    order: 1;
  }

  .school-text {
    order: 2;
  }

  .mission-vision {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
  }

  .nav-container {
    flex-direction: column;
    padding: var(--spacing-md);
    min-height: auto;
  }

  .menu {
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero {
    padding: 3rem var(--spacing-md) 4rem;
  }

  .branches-grid,
  .simulations-grid {
    grid-template-columns: 1fr;
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .logo-text {
    font-size: 1rem;
  }

  .menu li a {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }
}