/* Custom CSS for Orthodontic Software List */
/* Framework-ready: Classes like .container, .btn could align with Bootstrap */

:root {
  --primary-color: #0056b3;
  --secondary-color: #6c757d;
  --background-color: #e9ecef;
  --text-color: #212529;
  --border-color: #dee2e6;
  --shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--background-color);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background-color: var(--primary-color);
  color: white;
  padding: 1rem 0;
  box-shadow: var(--shadow);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header h1 {
  margin: 0;
  font-size: 1.8rem;
}

.header a {
  color: white;
  text-decoration: none;
}

.header nav a {
  margin-left: 1rem;
  padding: 0.5rem;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.header nav a:hover {
  background-color: rgba(255,255,255,0.1);
}

main {
  padding: 2rem 0;
  min-height: calc(100vh - 200px);
}

.footer {
  background-color: var(--secondary-color);
  color: white;
  text-align: center;
  padding: 1rem 0;
  margin-top: 2rem;
}

.footer p {
  margin: 0.5rem 0;
}

/* Typography */
h1, h2, h3 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

p {
  margin-bottom: 1rem;
}

a {
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Lists and Links */
ul {
  list-style: none;
  padding: 0;
}

li {
  margin-bottom: 0.5rem;
}

/* Table Styling */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  background-color: white;
  box-shadow: var(--shadow);
  border-radius: 8px;
  overflow: hidden;
}

th, td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  background-color: var(--primary-color);
  color: white;
  font-weight: bold;
}

tr:hover {
  background-color: #f1f3f4;
}

.btn {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.3s;
}

.btn:hover {
  background-color: #004085;
}

/* Responsive Design */
@media (max-width: 768px) {
  .header .container {
    flex-direction: column;
    text-align: center;
  }

  .header nav {
    margin-top: 1rem;
  }

  table {
    font-size: 0.9rem;
  }

  th, td {
    padding: 0.5rem;
  }

  .container {
    padding: 0 10px;
  }
}

/* Software List Cards */
.software-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin: 2rem 0;
}

.software-item {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
}

.software-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.software-item h3 {
  margin-bottom: 0.5rem;
}

.software-item p {
  margin-bottom: 1rem;
  color: var(--secondary-color);
}

@media (max-width: 768px) {
  .software-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }

  .header h1 {
    font-size: 1.5rem;
  }

  .software-item {
    padding: 1rem;
  }
}