:root {
  --bg-color-light: #f0f2f5;
  --text-color-light: #333;
  --card-bg-color-light: #fff;
  --header-bg-light: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
  --button-border-light: #ddd;

  --bg-color-dark: #121212;
  --text-color-dark: #fff;
  --card-bg-color-dark: #1e1e1e;
  --header-bg-dark: linear-gradient(90deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
  --button-border-dark: #555;
}

body {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  transition: background-color 0.3s, color 0.3s;
}

body[data-theme="light"] {
  background-color: var(--bg-color-light);
  color: var(--text-color-light);
  background-image: none;
}

body[data-theme="dark"] {
  background-color: var(--bg-color-dark);
  color: var(--text-color-dark);
  background-image: url('https://images.unsplash.com/photo-1578598335925-1151c142277d?q=80&w=2070&auto=format&fit=crop&ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D');
}


header {
  color: #fff;
  padding: 1rem 2rem;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

body[data-theme="light"] header {
  background: var(--header-bg-light);
}

body[data-theme="dark"] header {
  background: var(--header-bg-dark);
}


h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 1px;
}

main {
  padding: 1rem;
  max-width: 960px;
  margin: 1rem auto;
  background-color: transparent;
  border-radius: 8px;
}

.genre-selection {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.genre-selection button {
  background-color: transparent;
  padding: 12px 24px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

body[data-theme="light"] .genre-selection button {
  border: 2px solid var(--button-border-light);
  color: var(--text-color-light);
}

body[data-theme="dark"] .genre-selection button {
  border: 2px solid var(--button-border-dark);
  color: var(--text-color-dark);
}


.genre-selection button:hover, .genre-selection button.active {
  background-color: #667eea;
  color: #fff;
  border-color: #667eea;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(102, 126, 234, 0.3);
}

.movie-recommendations {
  text-align: center;
}

#recommendations-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 1.5rem;
}

.movie-card {
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  text-align: left;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

body[data-theme="light"] .movie-card {
  background-color: var(--card-bg-color-light);
  color: var(--text-color-light);
}

body[data-theme="dark"] .movie-card {
  background-color: var(--card-bg-color-dark);
  color: var(--text-color-dark);
}

.movie-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.movie-card img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.movie-card h3 {
  margin: 1rem 1rem 0.5rem 1rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.movie-card p {
  margin: 0 1rem 1rem 1rem;
  font-size: 0.9rem;
  opacity: 0.8;
  flex-grow: 1;
}

/* Dark mode toggle switch */
.dark-mode-toggle {
    display: flex;
    align-items: center;
}

.dark-mode-toggle label {
    margin-right: 10px;
}

/* Basic styles for the switch */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
}
.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.theme-switch input {
    display:none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
}

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

input:checked + .slider {
    background-color: #667eea;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}


/* Responsive adjustments */
@media (max-width: 600px) {
  header {
    flex-direction: column;
  }
  
  h1 {
    margin-bottom: 1rem;
  }

  .genre-selection {
    flex-direction: column;
    align-items: center;
  }
  
  main {
    margin: 0.5rem auto;
  }
}