/* Base styles */
body {
  font-family: Arial, sans-serif;
  background-color: #000;
  color: #fff;
  margin: 0;
  padding: 0 0.5rem; /* slight horizontal padding */
  box-sizing: border-box;
}

header {
  background-color: #000;
  color: #fff;
  text-align: center;
  padding: 1.5rem 1rem; /* reduced horizontal padding for smaller screens */
  border-bottom: 1px solid white;
  box-sizing: border-box;
}

/* Container wrapper for centering and horizontal padding */
.container {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 0 1rem;
  box-sizing: border-box;
}

/* Search filter section */
.search-filter {
  max-width: 600px;
  margin: 0 auto 2rem auto; /* center horizontally, add bottom margin */
  padding: 0 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  box-sizing: border-box;
}

.search-filter input,
.search-filter select {
  padding: 0.5rem;
  font-size: 1rem;
  background-color: #000;
  color: #fff;
  border: 1px solid #fff;
  flex: 1 1 100%; /* full width on small screens */
  min-width: 150px;
  box-sizing: border-box;
}

/* Inputs side by side on wider screens */
@media (min-width: 500px) {
  .search-filter input,
  .search-filter select {
    flex: 1 1 auto;
  }
}

/* Drug cards container */
#drugs-container {
  max-width: 1000px;
  margin: 0 auto 3rem auto;
  padding: 0 1rem;
  box-sizing: border-box;
}

/* Drug card styling */
.drug-card {
  background-color: #000;
  color: #fff;
  padding: 1rem;
  border: 1px solid #fff;
  border-radius: 8px;
  margin-bottom: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
  box-sizing: border-box;
}

.drug-card:hover {
  background-color: #111;
}

/* Modal overlay */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  box-sizing: border-box;
  overflow-y: auto;
}

.modal.hidden {
  display: none;
}

/* Modal content */
.modal-content {
  background-color: #000;
  color: #fff;
  padding: 2rem 1.5rem;
  border: 1px solid #fff;
  border-radius: 8px;
  max-width: 600px;
  width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  box-sizing: border-box;
  position: relative;
}

/* Close button */
.close-btn {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  color: white;
}

/* Scrollbar styling for modal */
.modal-content::-webkit-scrollbar {
  width: 8px;
}

.modal-content::-webkit-scrollbar-thumb {
  background-color: #555;
  border-radius: 4px;
}

.modal-content::-webkit-scrollbar-track {
  background-color: #222;
}