:root {
  --color-brand: #64ffda; /* Vibrant Teal */
  --color-brand-secondary: #f9ca24; /* Sunny Yellow */
  --color-background: #0a192f; /* Deep Navy */
  --color-text: #ccd6f6; /* Light Slate */
  --color-text-muted: #a8b2d1; /* Muted Slate */
  --color-card: #112240; /* Darker Navy Card */
  --color-header: #0a192f; /* Match Background */
  --color-nav: #112240; /* Darker Navy Nav */
  --color-hover: #89ffef; /* Lighter Teal Hover */
  --font-sans: 'Calibre', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;

  /* Reduced scale for smaller UI */
  --scale-factor: 0.9; /* Overall scale factor, adjust as needed */
  --font-size-base: calc(1rem * var(--scale-factor));
  --font-size-h1: calc(2.5rem * var(--scale-factor));
  --font-size-h2: calc(2rem * var(--scale-factor));
  --font-size-h3: calc(1.3rem * var(--scale-factor));
  --font-size-p: calc(1.1rem * var(--scale-factor));
  --padding-lg: calc(2rem * var(--scale-factor));
  --padding-md: calc(1.5rem * var(--scale-factor));
  --padding-sm: calc(1.2rem * var(--scale-factor));
  --padding-xs: calc(1rem * var(--scale-factor));
  --margin-lg: calc(3rem * var(--scale-factor));
  --margin-md: calc(2.5rem * var(--scale-factor));
  --margin-sm: calc(2rem * var(--scale-factor));
  --margin-xs: calc(1.5rem * var(--scale-factor));
  --border-radius: calc(10px * var(--scale-factor));
  --content-item-width: calc(300px * var(--scale-factor));
  --content-item-image-height: calc(360px * var(--scale-factor));
  --modal-max-width: calc(1000px * var(--scale-factor)); /* Increased max-width */
  --modal-padding: calc(25px * var(--scale-factor));
  --modal-header-margin-bottom: calc(25px * var(--scale-factor));
  --modal-body-gap: calc(20px * var(--scale-factor));
  --modal-poster-flex-basis: calc(400px * var(--scale-factor)); /* Increased poster width */
  --modal-trailer-height: calc(450px * var(--scale-factor));
  --similar-item-image-height: calc(220px * var(--scale-factor));
  --cast-image-size: calc(60px * var(--scale-factor));
  --toggle-size: calc(60px * var(--scale-factor));
  --toggle-font-size: calc(28px * var(--scale-factor));
  --tag-padding: calc(0.3rem * var(--scale-factor)) calc(0.6rem * var(--scale-factor));
  --tag-border-radius: calc(18px * var(--scale-factor));
  --tag-font-size: calc(0.9rem * var(--scale-factor));
  --cast-member-padding: calc(8px * var(--scale-factor));
  --cast-member-margin-bottom: calc(12px * var(--scale-factor));
  --similar-items-gap: calc(1.5rem * var(--scale-factor));
  --similar-item-min-width: calc(160px * var(--scale-factor));
}

.light-mode {
  --color-brand: #007bff; /* Blue for Light Mode Brand */
  --color-brand-secondary: #ffc107; /* Yellow for Light Mode Secondary */
  --color-background: #f8f9fa; /* Light Gray Background */
  --color-text: #343a40; /* Dark Gray Text */
  --color-text-muted: #6c757d; /* Muted Gray Text */
  --color-card: #ffffff; /* White Card */
  --color-header: #f8f9fa; /* Light Gray Header */
  --color-nav: #ffffff; /* White Nav */
  --color-hover: #0095ff; /* Lighter Blue Hover */
}

body {
  font-family: var(--font-sans);
  margin: 0;
  padding: 0;
  background-color: var(--color-background);
  color: var(--color-text);
  transition: background-color 0.3s, color 0.3s;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-size: var(--font-size-base); /* Base font size from variable */
}

/* Header Styles */
header {
  background-color: var(--color-header);
  color: var(--color-text);
  text-align: left;
  padding: var(--padding-md) var(--padding-md); /* Reduced header padding */
  position: static; /* Changed to static */
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--color-header); /* Solid background color */
  border-bottom: 1px solid #1e3a5f;
}

.header-content {
  flex-grow: 1;
}

header h1 {
  font-size: var(--font-size-h1); /* Using font size variable */
  margin: 0;
  font-weight: 700;
  letter-spacing: -1.5px; /* Slightly tighter letter spacing for a modern feel */
  color: var(--color-brand);
  text-shadow: 1px 1px 2px rgba(0,0,0,0.2); /* Subtler text shadow */
}

header p {
  font-size: var(--font-size-p); /* Using font size variable */
  margin: 0.5rem 0 0 0;
  color: var(--color-text-muted);
  opacity: 0.8; /* Slightly reduced opacity for a softer look */
}

.credits {
  font-size: 0.9rem;
  opacity: 0.9;
  text-align: right;
}

.credits a {
  color: var(--color-brand-secondary);
  text-decoration: none;
  transition: color 0.3s;
  font-weight: 500;
}

.credits a:hover {
  color: var(--color-hover);
}

/* Navigation Styles */
nav {
  background-color: var(--color-nav);
  padding: var(--padding-sm) var(--padding-md); /* Using padding variables */
  position: static;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  border-bottom: 1px solid #1e3a5f;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: var(--margin-xs); /* Using margin variable for gap */
  flex-wrap: wrap;
  justify-content: flex-start;
}

nav ul li a {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  transition: color 0.3s, background-color 0.3s, transform 0.3s, box-shadow 0.3s;
  display: block;
  font-size: var(--font-size-base); /* Using font size variable */
  font-weight: 500;
  background-color: rgba(255, 255, 255, 0.03);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--color-text);
  background-color: var(--color-brand);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

nav ul li a[data-section="home"] {
  color: var(--color-text);
  background-color: var(--color-brand);
}

/* Main Content Styles */
main {
  max-width: 1200px;
  margin: var(--margin-lg) auto; /* Using margin variable */
  padding: 0 var(--padding-lg); /* Using padding variable */
}

.search-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--margin-md); /* Using margin variable */
}

#search-input {
  width: 100%;
  max-width: 600px;
  padding: var(--padding-xs) var(--padding-sm); /* Using padding variables */
  font-size: var(--font-size-base); /* Using font size variable */
  border: 1px solid var(--color-card);
  border-radius: var(--border-radius); /* Using border-radius variable */
  background-color: var(--color-card);
  color: var(--color-text);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s;
}

#search-input:focus {
  border-color: var(--color-brand);
  box-shadow: 0 0 0 2px rgba(var(--color-brand-rgb), 0.3), inset 0 1px 3px rgba(0, 0, 0, 0.08);
}

#content-title {
  font-size: var(--font-size-h2); /* Using font size variable */
  margin-bottom: var(--margin-sm); /* Using margin variable */
  text-align: left;
  color: var(--color-text);
  font-weight: 600;
}

.featured-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--content-item-width), 1fr)); /* Using content item width variable */
  gap: var(--margin-sm); /* Using margin variable for gap */
}

.content-item {
  background-color: var(--color-card);
  border-radius: var(--border-radius); /* Using border-radius variable */
  overflow: hidden;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.02);
}

.content-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.content-item img {
  width: 100%;
  height: var(--content-item-image-height); /* Using image height variable */
  object-fit: cover;
  display: block;
  transition: opacity 0.3s ease-in-out;
}

.content-item img:hover {
  opacity: 0.9;
}

.content-item .info {
  padding: var(--padding-sm); /* Using padding variable */
}

.content-item h3 {
  margin: 0 0 0.7rem 0;
  font-size: var(--font-size-base); /* Using font size variable */
  font-weight: 600;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.content-item p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-base); /* Using font size variable */
  opacity: 0.85;
}

#loading {
  text-align: center;
  font-size: var(--font-size-base); /* Using font size variable */
  margin-top: var(--margin-sm); /* Using margin variable */
  color: var(--color-brand);
  opacity: 0.9;
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1001;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
}

.modal-content {
  background-color: var(--color-card);
  margin: 5% auto;
  padding: var(--modal-padding); /* Using modal padding variable */
  border-radius: 12px;
  width: 85%;
  max-width: var(--modal-max-width); /* Using modal max width variable */
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.close {
  color: var(--color-text-muted);
  position: absolute;
  top: 15px;
  right: 20px;
  font-size: 28px;
  font-weight: normal;
  cursor: pointer;
  transition: color 0.3s, transform 0.3s;
  opacity: 0.8;
}

.close:hover,
.close:focus {
  color: var(--color-brand);
  opacity: 1;
  transform: scale(1.1);
}

.modal-header {
  margin-bottom: var(--modal-header-margin-bottom); /* Using modal header margin variable */
  border-bottom: 1px solid var(--color-nav);
  padding-bottom: 12px;
}

.modal-header h2 {
  margin: 0;
  font-size: var(--font-size-h2); /* Using font size variable */
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.5px;
}

.modal-body {
  display: flex;
  flex-wrap: wrap;
  gap: var(--modal-body-gap); /* Using modal body gap variable */
}

.modal-poster {
  flex: 0 0 var(--modal-poster-flex-basis); /* Using modal poster flex basis variable */
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.03);
}

.modal-poster img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.3s ease-in-out;
}

.modal-poster img:hover {
  transform: scale(1.05);
}

.modal-details {
  flex: 1;
  min-width: 300px;
}

.modal-details p {
  margin-bottom: 1rem;
  font-size: var(--font-size-base); /* Using font size variable */
  color: var(--color-text-muted);
  line-height: 1.6;
}

.modal-details h3 {
  margin-top: var(--margin-xs); /* Using margin variable */
  margin-bottom: 0.7rem;
  font-size: var(--font-size-h3); /* Using font size variable */
  color: var(--color-brand);
  font-weight: 600;
}

.modal-trailer {
  margin-top: var(--margin-sm); /* Using margin variable */
  width: 100%;
}

.modal-trailer h3 {
  color: var(--color-brand);
  margin-bottom: 1rem;
  font-size: var(--font-size-h3); /* Using font size variable */
  font-weight: 600;
}

.modal-trailer iframe {
  width: 100%;
  height: var(--modal-trailer-height); /* Using trailer height variable */
  border-radius: 8px;
  border: none;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Light Mode Toggle */
#light-mode-toggle {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--color-brand);
  color: var(--color-background);
  border: none;
  border-radius: 50%;
  width: var(--toggle-size); /* Using toggle size variable */
  height: var(--toggle-size); /* Using toggle size variable */
  font-size: var(--toggle-font-size); /* Using toggle font size variable */
  cursor: pointer;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s, transform 0.3s;
  outline: none;
}

#light-mode-toggle:hover {
  background-color: var(--color-brand-secondary);
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.25);
}

/* Tags, Cast, Similar Content Styles */
.tag {
  display: inline-block;
  background-color: var(--color-brand);
  color: var(--color-background);
  padding: var(--tag-padding); /* Using tag padding variable */
  border-radius: var(--tag-border-radius); /* Using tag border radius variable */
  font-size: var(--tag-font-size); /* Using tag font size variable */
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease-in-out;
}

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

.cast-member {
  display: flex;
  align-items: center;
  margin-bottom: var(--cast-member-margin-bottom); /* Using cast member margin variable */
  cursor: pointer;
  transition: transform 0.2s ease-in-out, background-color 0.2s, box-shadow 0.2s;
  padding: var(--cast-member-padding); /* Using cast member padding variable */
  border-radius: 8px;
  background-color: rgba(255, 255, 255, 0.02);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.cast-member:hover {
  transform: scale(1.03);
  background-color: rgba(255, 255, 255, 0.05);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.cast-member img {
  width: var(--cast-image-size); /* Using cast image size variable */
  height: var(--cast-image-size); /* Using cast image size variable */
  border-radius: 50%;
  margin-right: 15px;
  object-fit: cover;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease-in-out;
}

.cast-member img:hover {
  transform: scale(1.1);
}

.similar-content, .known-for-content {
  margin-top: var(--margin-sm); /* Using margin variable */
}

.similar-content h3, .known-for-content h3 {
  margin-bottom: var(--margin-xs); /* Using margin variable */
  font-size: var(--font-size-h3); /* Using font size variable */
  color: var(--color-brand);
  font-weight: 600;
}

.similar-items, .known-for-content {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--similar-item-min-width), 1fr)); /* Using similar item min width variable */
  gap: var(--similar-items-gap); /* Using similar items gap variable */
}

.similar-item, .known-for-item {
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  background-color: var(--color-card);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.02);
}

.similar-item:hover, .known-for-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.15);
}

.similar-item img, .known-for-item img {
  width: 100%;
  height: var(--similar-item-image-height); /* Using similar item image height variable */
  object-fit: cover;
  display: block;
  transition: opacity 0.3s ease-in-out;
}

.similar-item img:hover, .known-for-item img:hover {
  opacity: 0.9;
}

.similar-item p, .known-for-item p {
  padding: 1rem;
  margin: 0;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--color-text-muted);
  opacity: 0.9;
}

/* Responsive adjustments - Updated for enhanced styles */
@media (max-width: 768px) {
  :root {
    --scale-factor: 0.8; /* Further scale down on smaller screens */
    --font-size-base: calc(1rem * var(--scale-factor));
    --font-size-h1: calc(2.5rem * var(--scale-factor));
    --font-size-h2: calc(2rem * var(--scale-factor));
    --font-size-h3: calc(1.3rem * var(--scale-factor));
    --font-size-p: calc(1.1rem * var(--scale-factor));
    --padding-lg: calc(1.5rem * var(--scale-factor));
    --padding-md: calc(1rem * var(--scale-factor));
    --padding-sm: calc(1rem * var(--scale-factor));
    --padding-xs: calc(0.9rem * var(--scale-factor));
    --margin-lg: calc(2.5rem * var(--scale-factor));
    --margin-md: calc(2rem * var(--scale-factor));
    --margin-sm: calc(1.5rem * var(--scale-factor));
    --margin-xs: calc(1.2rem * var(--scale-factor));
    --border-radius: calc(10px * var(--scale-factor));
    --content-item-width: calc(250px * var(--scale-factor));
    --content-item-image-height: calc(320px * var(--scale-factor));
    --modal-max-width: 95%;
    --modal-padding: calc(20px * var(--scale-factor));
    --modal-header-margin-bottom: calc(20px * var(--scale-factor));
    --modal-body-gap: calc(15px * var(--scale-factor));
    --modal-poster-flex-basis: 100%;
    --modal-trailer-height: calc(300px * var(--scale-factor));
    --similar-item-image-height: calc(180px * var(--scale-factor));
    --cast-image-size: calc(55px * var(--scale-factor));
    --toggle-size: calc(55px * var(--scale-factor));
    --toggle-font-size: calc(26px * var(--scale-factor));
    --tag-padding: calc(0.3rem * var(--scale-factor)) calc(0.5rem * var(--scale-factor));
    --tag-border-radius: calc(18px * var(--scale-factor));
    --tag-font-size: calc(0.8rem * var(--scale-factor));
    --cast-member-padding: calc(6px * var(--scale-factor));
    --cast-member-margin-bottom: calc(10px * var(--scale-factor));
    --similar-items-gap: calc(1.1rem * var(--scale-factor));
    --similar-item-min-width: calc(130px * var(--scale-factor));
  }

  header {
    padding: var(--padding-sm) var(--padding-md); /* Further reduced header padding for smaller screens */
    flex-direction: column;
    text-align: center;
  }

  .header-content {
    margin-bottom: var(--margin-xs); /* Adjusted margin for smaller screens */
  }

  header h1 {
    font-size: var(--font-size-h2); /* Adjusted font size for smaller screens */
  }

  header p {
    font-size: var(--font-size-base); /* Adjusted font size for smaller screens */
  }

  .credits {
    text-align: center;
  }

  nav {
    padding: var(--padding-sm) var(--padding-md); /* Adjusted padding for smaller screens */
  }

  nav ul {
    gap: var(--margin-xs); /* Adjusted gap for smaller screens */
    justify-content: center;
  }

  nav ul li a {
    padding: 0.6rem 1rem; /* Adjusted padding for smaller screens */
    font-size: 0.9rem; /* Adjusted font size for smaller screens */
  }

  main {
    padding: 0 var(--padding-md); /* Adjusted padding for smaller screens */
    margin: var(--margin-md) auto; /* Adjusted margin for smaller screens */
  }

  .search-container {
    margin-bottom: var(--margin-sm); /* Adjusted margin for smaller screens */
  }

  #search-input {
    padding: 0.9rem 1.1rem; /* Adjusted padding for smaller screens */
    font-size: var(--font-size-base); /* Adjusted font size for smaller screens */
  }

  #content-title {
    font-size: var(--font-size-h2); /* Adjusted font size for smaller screens */
    margin-bottom: var(--margin-xs); /* Adjusted margin for smaller screens */
    text-align: center;
  }

  .featured-content {
    grid-template-columns: repeat(auto-fill, minmax(var(--content-item-width), 1fr)); /* Adjusted grid for smaller screens */
    gap: var(--margin-xs); /* Adjusted gap for smaller screens */
  }

  .content-item {
    background-color: var(--color-card);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    cursor: pointer;
  }

  .content-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
  }

  .content-item img {
    height: var(--content-item-image-height);
  }

  .content-item .info {
    padding: var(--padding-xs);
  }

  .modal-content {
    width: var(--modal-max-width);
    margin: 3% auto;
    padding: var(--modal-padding);
  }

  .modal-header h2 {
    font-size: var(--font-size-h2);
  }

  .modal-body {
    flex-direction: column;
    gap: var(--modal-body-gap);
  }

  .modal-poster {
    flex: 0 0 100%;
    max-width: 350px;
    margin: 0 auto;
  }

  .modal-trailer iframe {
    height: var(--modal-trailer-height);
  }

  .similar-items, .known-for-content {
    grid-template-columns: repeat(auto-fill, minmax(var(--similar-item-min-width), 1fr));
    gap: var(--similar-items-gap);
  }

  .similar-item img, .known-for-item img {
    height: var(--similar-item-image-height);
  }

  .cast-member {
    flex-direction: column;
    text-align: center;
  }

  .cast-member img {
    margin-right: 0;
    margin-bottom: 10px;
  }

  #light-mode-toggle {
    bottom: 25px;
    right: 25px;
    width: var(--toggle-size);
    height: var(--toggle-size);
    font-size: var(--toggle-font-size);
  }
}