/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Fresh Green Accent */
  --primary: #2ecc71;
  --primary-dark: #27ae60;
  --primary-light: #a8e6cf;

  /* Clean Backgrounds */
  --bg-dark: #f5f5f5;
  --bg-light: #ffffff;

  /* Text Colors */
  --text-dark: #2c3e50;
  --text-light: #34495e;
  --muted: #7f8c8d;

  /* Card Colors */
  --card-bg: #ffffff;
  --card-border: rgba(0, 0, 0, 0.1);

  /* Enhanced Gradient Background */
  --bg-gradient: linear-gradient(135deg, #f0f9f0, #e0f2e9);
}

[data-theme="dark"] {
  --primary: #4ade80;
  --primary-dark: #22c55e;
  --primary-light: #86efac;

  /* Dark Backgrounds */
  --bg-dark: #0f0f0f;
  --bg-light: #1a1a1a;

  /* Text Colors */
  --text-dark: #ffffff;
  --text-light: #e0e0e0;
  --muted: #a3a3a3;

  /* Card Colors */
  --card-bg: #0f0f0f;
  --card-border: rgba(255, 255, 255, 0.08);

  /* Dark Gradient Background */
  --bg-gradient: linear-gradient(135deg, #0f0f0f, #1a1a1a);

  /* Additional Dark Theme Overrides for header */
  .theme-toggle {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.1);
  }

  .theme-toggle:hover {
    background: var(--bg-light);
    color: var(--primary);
    border-color: var(--primary);
  }

  /* Improve text contrast in dark mode */
  nav a {
    color: var(--text-light);
  }
}

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

body {
  background: var(--bg-dark);
  color: var(--text-dark);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  font-family: "Outfit", sans-serif;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

/* ===========================
   Header / Navigation
   =========================== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 3%;
  background: var(--bg-dark);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: none;
  border-bottom: 1px solid var(--card-border);
}

header h1 {
  font-size: 1.6rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
}

header h1 span {
  color: var(--primary-dark);
}

/* Navigation */
nav {
  display: flex;
  flex-wrap: wrap;
  flex-direction: row;
  gap: 1.5rem;
  margin-left: auto;
}

nav a {
  color: var(--text-dark);
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 400;
  position: relative;
  padding: 0.5rem 0;
  font-size: 0.9rem;
}

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

nav a.active {
  color: var(--primary);
  font-weight: 500;
}

nav a::after {
  display: none;
}

/* Mobile nav-specific classes */
nav.nav-menu {
  margin-right: 1rem;
}

nav.nav-menu a {
  color: var(--text-dark);
}

/* Hamburger Menu */
.hamburger {
  display: none;
  /* Hide by default on desktop */
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
  transition: color 0.3s ease;
  background-color: var(--bg-light);
}

.hamburger:hover {
  color: var(--primary);
}

/* ===========================
   Theme Toggle 
   =========================== */
.theme-toggle {
  cursor: pointer;
  font-size: 1.2rem;
  color: var(--text-dark);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s ease;
  background: transparent;
  border: 1px solid var(--card-border);
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 999;
}

.theme-toggle:hover {
  background: var(--bg-light);
  color: var(--primary);
  transform: none;
  border-color: var(--primary);
}

/* Synopsis Layout */
.synopsis-container {
  max-width: 1200px;
  margin: 1rem auto;
  padding: 0 1.5rem;
  background-color: var(--bg-dark);
}

/* Main Content */
.synopsis-content {
  margin-bottom: 3rem;
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: none;
  border: 1px solid var(--card-border);
  flex: 1;
}

.synopsis-header {
  text-align: center;
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--card-border);
}

.synopsis-header h2 {
  font-family: "Outfit", sans-serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.synopsis-icon {
  font-size: 2rem;
  color: var(--primary);
  margin: 1rem 0;
  animation: float 4s ease-in-out infinite;
}

.synopsis-body {
  padding: 0 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.synopsis-body p {
  font-size: 1rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  text-align: left;
  line-height: 1.7;
  font-weight: 400;
}

.highlight {
  color: var(--primary);
  font-weight: 600;
}

.key-point {
  background: var(--bg-dark);
  padding: 1.5rem;
  border-radius: 8px;
  margin: 2rem 0;
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--card-border);
  box-shadow: none;
  transition: all 0.2s ease;
}

.key-point:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.key-point i {
  font-size: 1.5rem;
  color: var(--primary);
  min-width: 24px;
}

.key-point p {
  margin: 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dark);
}

.data-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}

.data-point {
  background: var(--bg-dark);
  padding: 1.25rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--card-border);
  box-shadow: none;
  transition: all 0.2s ease;
}

.data-point:hover {
  transform: translateY(-2px);
  border-color: var(--primary);
}

.data-point i {
  font-size: 1.25rem;
  color: var(--primary);
  min-width: 20px;
}

.data-point span {
  color: var(--text-dark);
  font-weight: 500;
  font-size: 0.9rem;
}

.study-comparison {
  background: var(--bg-dark);
  border-radius: 8px;
  padding: 1.5rem;
  margin: 2.5rem 0;
  position: relative;
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--primary);
  box-shadow: none;
}

.study-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.study-header i {
  font-size: 1.5rem;
  color: var(--primary);
  animation: rotate 20s linear infinite;
}

.study-header h3 {
  font-family: "Outfit", sans-serif;
  color: var(--text-dark);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

.study-comparison p {
  font-size: 1rem;
  line-height: 1.6;
  margin: 0;
  color: var(--text-light);
  font-weight: 400;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

@keyframes float {
  0% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }

  100% {
    transform: translateY(0);
  }
}

/* Footer */
footer {
  background: var(--card-bg);
  text-align: center;
  padding: 1.5rem;
  margin-top: auto;
  color: var(--muted);
  border-top: 1px solid var(--card-border);
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .synopsis-container {
    padding: 0 1rem;
  }

  .synopsis-content {
    padding: 1.5rem;
    margin: 1rem auto;
  }

  .synopsis-header h2 {
    font-size: 1.8rem;
  }

  .synopsis-body {
    padding: 0 0.5rem;
  }

  .synopsis-body p {
    font-size: 0.95rem;
  }

  /* Mobile Navigation Styles */
  .hamburger {
    display: block;
    margin-right: 1rem;
  }

  nav.nav-menu {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background: var(--bg-light);
    padding: 1rem;
    box-shadow: none;
    border-bottom: 1px solid var(--card-border);
    z-index: 1000;
  }

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

  nav.nav-menu a {
    width: 100%;
    text-align: center;
    padding: 0.8rem;
    border-radius: 6px;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
  }

  nav.nav-menu a:hover {
    background: var(--bg-dark);
    border-color: var(--primary);
  }

  header {
    padding: 1rem;
  }

  header h1 {
    font-size: 1.4rem;
  }

  .data-points {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .key-point {
    padding: 1.2rem;
    flex-direction: column;
    text-align: center;
    gap: 0.8rem;
  }

  .study-comparison {
    padding: 1.2rem;
  }
}

@media (max-width: 480px) {
  .synopsis-content {
    padding: 1rem;
  }

  .synopsis-header h2 {
    font-size: 1.6rem;
  }

  .synopsis-icon {
    font-size: 1.8rem;
  }

  nav.nav-menu {
    top: 50px;
  }

  nav.nav-menu a {
    font-size: 0.9rem;
    padding: 0.6rem;
  }

  .key-point {
    padding: 1rem;
  }

  .data-point {
    padding: 1rem;
  }
}