/* CSS Custom Properties for consistent theming */
:root {
  /* Color palette */
  --primary-bg: #4f3c59;
  --secondary-bg: #e7e7e7e7;
  --text-dark: #000;
  --text-light: #333;
  --dropdown-bg: #e7e7e7e7;
  --dropdown-hover: purple;
  --accent-purple: purple;
  --accent-magenta: magenta;
  
  /* Section colors - maintaining original palette */
  --sustainability-primary: #28a745;
  --sustainability-accent: lime;
  --sustainability-bg: #0153056a;
  
  --education-primary: #b38b11;
  --education-accent: #ffc107;
  --education-bg: #534f016a;
  
  --collectivity-primary: #dc3545;
  --collectivity-accent: red;
  --collectivity-bg: #5302016a;
  
  --technology-primary: #1390d8;
  --technology-accent: cyan;
  --technology-bg: #01534d6a;
  
  /* Spacing */
  --container-max-width: 1200px;
  --section-padding: 2rem;
  --element-gap: 1rem;
  
  /* Typography */
  --font-family: 'Poppins', sans-serif;
  --font-size-base: 1rem;
  --font-size-large: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Border radius */
  --border-radius-sm: 0.375rem;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
  background: linear-gradient(90deg, var(--primary-bg) 0%, var(--secondary-bg) 50%, var(--primary-bg) 100%);
  background-attachment: fixed;
  background-color: #4f3c59;
  transition: filter 3s ease;
}

body {
  min-height: 100vh;
  color: var(--text-dark);
  font-weight: var(--font-weight-normal);
  overflow-x: hidden;
}

/* Modern animations - maintaining original glow effects */
@keyframes glow-sustainability {
  0%, 100% { 
    box-shadow: 0 0 15px var(--sustainability-primary);
    color: var(--sustainability-primary);
  }
  50% { 
    box-shadow: 0 0 25px var(--sustainability-accent);
    color: var(--sustainability-accent);
  }
}

@keyframes glow-education {
  0%, 100% { 
    box-shadow: 0 0 15px var(--education-primary);
    color: var(--education-primary);
  }
  50% { 
    box-shadow: 0 0 25px var(--education-accent);
    color: var(--education-accent);
  }
}

@keyframes glow-collectivity {
  0%, 100% { 
    box-shadow: 0 0 15px var(--collectivity-primary);
    color: var(--collectivity-primary);
  }
  50% { 
    box-shadow: 0 0 25px var(--collectivity-accent);
    color: var(--collectivity-accent);
  }
}

@keyframes glow-technology {
  0%, 100% { 
    box-shadow: 0 0 15px var(--technology-primary);
    color: var(--technology-primary);
  }
  50% { 
    box-shadow: 0 0 25px var(--technology-accent);
    color: var(--technology-accent);
  }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

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

/* Header and Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding: 1rem 0;
}

/* Header and Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(79, 60, 89, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--accent-magenta);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0.5rem 1rem;
}

.nav-logo {
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-bold);
  color: var(--accent-purple);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--accent-purple);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
}

/* Mobile Navigation */
@media (max-width: 767px) {
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(79, 60, 89, 0.98);
    backdrop-filter: blur(15px);
    flex-direction: column;
    padding: 2rem 1rem;
    transform: translateY(-100vh);
    transition: transform var(--transition-normal);
    gap: 1.5rem;
    border-top: 1px solid var(--accent-magenta);
  }
  
  .nav-menu.active {
    transform: translateY(0);
  }
  
  .dropdown {
    width: 100%;
  }
  
  .dropbtn {
    width: 100%;
    justify-content: space-between;
    padding: 1rem;
    font-size: var(--font-size-base);
  }
  
  .dropdown-content {
    position: static;
    display: none;
    width: 100%;
    margin-top: 0.5rem;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
  }
  
  .dropdown.active .dropdown-content {
    display: block;
  }
}

/* Adjust body padding for fixed header */
body {
  padding-top: 80px;
}

/* Modern dropdown styling */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropbtn {
  background: var(--dropdown-bg);
  color: var(--accent-purple);
  border: 2px solid var(--accent-magenta);
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow);
}

.dropdown-arrow {
  font-size: 0.75rem;
  transition: transform var(--transition-normal);
}

.dropbtn:hover {
  background: var(--accent-purple);
  color: white;
  text-shadow: 0 0 10px white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.dropbtn:hover .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-content {
  display: none;
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  background: white;
  min-width: 200px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 1001;
  animation: fadeInUp 0.3s ease;
}

.dropdown-content button,
.dropdown-content a {
  color: var(--accent-purple);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  display: block;
  width: 100%;
  text-align: left;
  transition: all var(--transition-fast);
  border-bottom: 1px solid #f0f0f0;
}

.dropdown-content button:last-child,
.dropdown-content a:last-child {
  border-bottom: none;
}

.dropdown-content button:hover,
.dropdown-content a:hover {
  background: var(--accent-purple);
  color: white;
  text-shadow: 0 0 5px white;
}

.dropdown:hover .dropdown-content {
  display: block;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 6rem 1rem 2rem;
  text-align: center;
}

.hero-background {
  position: absolute;
  top: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(350px, 80vw);
  height: min(350px, 80vw);
  background-image: url('Imagens/Principal.png');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.8;
  z-index: -1;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  animation: fadeInUp 1s ease;
}

.main-title {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: var(--font-weight-bold);
  color: var(--text-dark);
  text-decoration: underline;
  text-shadow: 0 0 10px var(--sustainability-accent);
  margin-bottom: 2rem;
  line-height: 1.2;
}

.intro-text p {
  font-size: var(--font-size-large);
  margin-bottom: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.topic-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin: 2rem 0;
}

.topic-badge {
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: var(--font-weight-semibold);
  text-shadow: 0 0 5px black;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: 2px solid currentColor;
}

.topic-badge:hover {
  transform: translateY(-2px);
  animation: pulse 0.6s ease;
}

.topic-badge.sustainability {
  color: var(--sustainability-accent);
  background-color: var(--sustainability-bg);
  border-color: var(--sustainability-accent);
}

.topic-badge.education {
  color: var(--education-accent);
  background-color: var(--education-bg);
  border-color: var(--education-accent);
}

.topic-badge.collectivity {
  color: var(--collectivity-accent);
  background-color: var(--collectivity-bg);
  border-color: var(--collectivity-accent);
}

.topic-badge.technology {
  color: var(--technology-accent);
  background-color: var(--technology-bg);
  border-color: var(--technology-accent);
}

.navigation-info,
.cta-text {
  font-size: var(--font-size-base);
  margin: 1rem 0;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* Main Content */
.main-content {
  padding: 2rem 0;
}

.content-section {
  margin: 4rem 0;
  scroll-margin-top: 100px;
}

.section-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-line {
  border: none;
  height: 2px;
  background: linear-gradient(to right, transparent, currentColor, transparent);
  margin: 1rem auto;
  max-width: 300px;
  animation: pulse 2s infinite;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  padding: 1rem 2rem;
  border-radius: 50px;
  margin: 1rem 0;
  position: relative;
  display: inline-block;
  background: linear-gradient(135deg, currentColor, #000000);
  text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.section-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
}

.image-container {
  text-align: center;
}

.section-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-slow);
  border: 3px solid currentColor;
}

.section-image:hover {
  transform: scale(1.05);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.text-content p {
  font-size: var(--font-size-base);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  text-align: justify;
}

.highlight-text {
  color: var(--technology-accent) !important;
  border: 2px solid var(--technology-accent);
  text-shadow: 0 0 5px black;
  background-color: var(--technology-bg);
  padding: 1rem;
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-large) !important;
  font-weight: var(--font-weight-semibold);
  text-align: center !important;
}

/* Section-specific styling */
.sustainability .section-line {
  color: var(--sustainability-accent);
}

.sustainability .section-title {
  color: var(--sustainability-primary);
  box-shadow: 0 0 20px var(--sustainability-primary);
  animation: glow-sustainability 5s infinite;
}

.sustainability .section-image {
  border-color: var(--sustainability-primary);
}

.sustainability .section-image:hover {
  animation: glow-sustainability 5s infinite;
}

.education .section-line {
  color: var(--education-accent);
}

.education .section-title {
  color: var(--education-primary);
  box-shadow: 0 0 20px var(--education-primary);
  animation: glow-education 5s infinite;
}

.education .section-image {
  border-color: var(--education-primary);
}

.education .section-image:hover {
  animation: glow-education 5s infinite;
}

.collectivity .section-line {
  color: var(--collectivity-accent);
}

.collectivity .section-title {
  color: var(--collectivity-primary);
  box-shadow: 0 0 20px var(--collectivity-primary);
  animation: glow-collectivity 5s infinite;
}

.collectivity .section-image {
  border-color: var(--collectivity-primary);
}

.collectivity .section-image:hover {
  animation: glow-collectivity 5s infinite;
}

.technology .section-line {
  color: var(--technology-accent);
}

.technology .section-title {
  color: var(--technology-primary);
  box-shadow: 0 0 20px var(--technology-primary);
  animation: glow-technology 5s infinite;
}

.technology .section-image {
  border-color: var(--technology-primary);
}

.technology .section-image:hover {
  animation: glow-technology 5s infinite;
}

/* Recommendations Section */
.recommendations-section {
  margin-top: 4rem;
  padding: 2rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--border-radius-xl);
  backdrop-filter: blur(10px);
}

.recommendations-intro,
.transition-text {
  font-size: var(--font-size-base);
  text-align: center;
  margin: 1.5rem 0;
  line-height: 1.8;
}

.movie-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.movie-card {
  text-decoration: none;
  color: inherit;
  text-align: center;
  transition: all var(--transition-normal);
  padding: 1rem;
  border-radius: var(--border-radius-lg);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(5px);
}

.movie-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  background: rgba(255, 255, 255, 0.2);
}

.movie-image {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  transition: all var(--transition-normal);
}

.movie-card:hover .movie-image {
  border-color: #007bff;
  box-shadow: 0 0 20px #007bff;
}

.movie-title {
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-semibold);
  margin-top: 1rem;
  text-decoration: underline;
  transition: all var(--transition-normal);
}

.movie-card:hover .movie-title {
  color: #007bff;
  text-shadow: 0 0 5px cyan;
}

/* Footer */
.site-footer {
  background: linear-gradient(135deg, var(--primary-bg), #2a1f3d);
  color: white;
  padding: 3rem 1rem 2rem;
  margin-top: 4rem;
  text-align: center;
}

.footer-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
}

.acknowledgments {
  font-size: var(--font-size-large);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.license-info {
  font-size: 0.875rem;
  line-height: 1.6;
}

.license-info a {
  color: #87ceeb;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.license-info a:hover {
  color: white;
  text-decoration: underline;
}

.license-info p {
  margin: 0.5rem 0;
}

/* Responsive Design */
@media (min-width: 768px) {
  .site-nav {
    gap: 2rem;
    padding: 1rem 2rem;
  }
  
  .nav-menu {
    gap: 2rem;
  }
  
  .dropbtn {
    padding: 1rem 2rem;
    font-size: var(--font-size-base);
  }
  
  .section-content {
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
  }
  
  .section-content:nth-child(even) {
    grid-template-columns: 2fr 1fr;
  }
  
  .section-content:nth-child(even) .image-container {
    order: 2;
  }
  
  .section-content:nth-child(even) .text-content {
    order: 1;
  }
  
  .text-content p {
    font-size: var(--font-size-large);
  }
  
  .movie-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .section-container {
    padding: 0 2rem;
  }
  
  .hero-content {
    max-width: 1000px;
  }
  
  .main-title {
    font-size: 3rem;
  }
  
  .intro-text p {
    font-size: 1.375rem;
  }
}

/* Accessibility improvements */
@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 states for accessibility */
button:focus,
a:focus {
  outline: 2px solid var(--technology-accent);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --shadow: none;
    --shadow-md: none;
    --shadow-lg: none;
  }
  
  .dropbtn,
  .section-image,
  .movie-card {
    border-width: 3px;
  }
}