body {
  font-family: 'Roboto', sans-serif;
  background-color: #f5faff; 
  color: #333; 
  margin: 0;
  padding: 0;
}

header {
  background: #002855; 
  color: #fff; 
  padding: 20px;
  text-align: center;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); 
}

.filters {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  margin: 20px 0;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  width: 80%;
  background-color: #ffffff; 
  border: 1px solid #dde6f2; 
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); 
}

.filter-group h3 {
  width: 100%;
  text-align: center;
  margin-bottom: 10px;
  font-size: 1.4em;
  color: #002855; 
}

.filter-group button {
  padding: 10px 15px;
  border: none;
  background-color: #ffcc00; 
  color: #002855; 
  cursor: pointer;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.filter-group button:hover {
  background-color: #ffd633; 
  transform: scale(1.05);
}

.filter-group button.active {
  background-color: #002855; 
  color: #ffffff; 
}

.reset-button {
  background-color: #d9534f; 
  color: white;
  border: none;
  font-weight: bold;
  padding: 10px 20px;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.reset-button:hover {
  background-color: #c9302c;
  transform: scale(1.05);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 20px;
  justify-items: center;
}


.card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-bottom: 2px solid #ffcc00; 
  transition: transform 0.5s ease, filter 0.5s ease;
}

.card img:hover {
  transform: scale(1.1);
  filter: brightness(1.2) saturate(1.2);
}



.card {
  background-color: #ffffff;
  border: 1px solid #dde6f2;
  border-radius: 8px;
  overflow: hidden;
  width: 250px;
  height: 350px; 
  text-align: center;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transform: translateY(20px); 
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.card:not(.hidden) {
  opacity: 1;
  transform: translateY(0);
}


.card:hover {
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
  transform: scale(1.05);
}


.card img {
  width: 100%;
  height: 200px; 
  object-fit: cover; 
  border-bottom: 2px solid #ffcc00; 
  transition: transform 0.5s ease, filter 0.5s ease;
}

.card img:hover {
  transform: scale(1.1);
  filter: brightness(1.2) saturate(1.2);
}


.card.dark-theme {
  background-color: #444;
  border-color: #555;
}


.card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-bottom: 2px solid #ffcc00;
  transition: transform 0.5s ease, filter 0.5s ease;
}

.card img:hover {
  transform: scale(1.1);
  filter: brightness(1.2) saturate(1.2);
}


body.dark-theme {
  background-color: #333;
  color: #f5faff;
}

header.dark-theme {
  background: #111;
  color: #fff;
}

.filter-group.dark-theme {
  background-color: #444;
  border: 1px solid #555;
}

.filter-group.dark-theme button {
  background-color: #555;
  color: #f5faff;
}

.filter-group.dark-theme button.active {
  background-color: #111;
}

.reset-button.dark-theme {
  background-color: #b52b27;
}

.gallery.dark-theme .card {
  background-color: #444;
  border-color: #555;
}

footer.dark-theme {
  background-color: #111;
}



footer {
  text-align: center;
  background-color: #002855; 
  color: white;
  padding: 10px;
  font-size: 0.9em;
  margin-top: 20px;
}

.theme-toggle {
  background-color: #ffcc00; 
  color: #002855; 
  border: none;
  padding: 10px 15px;
  font-weight: bold;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.theme-toggle:hover {
  background-color: #ffd633;
  transform: scale(1.05);
}