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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

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

/* Header */
header {
  text-align: center;
  margin-bottom: 30px;
  padding: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

header p {
  font-size: 1.1rem;
  opacity: 0.9;
}

/* Navigation */
nav {
  display: flex;
  justify-content: center;
  margin-bottom: 30px;
  gap: 20px;
}

nav a {
  padding: 12px 24px;
  text-decoration: none;
  color: #333;
  background-color: #e9ecef;
  border-radius: 5px;
  transition: all 0.3s ease;
}

nav a:hover,
nav a.active {
  background-color: #667eea;
  color: white;
}

/* Main Content */
main {
  background: white;
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Section Headers */
h2 {
  margin-bottom: 20px;
  color: #495057;
  border-bottom: 2px solid #667eea;
  padding-bottom: 10px;
}

/* Forms */
.form-section {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: #495057;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid #ced4da;
  border-radius: 5px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

.btn-primary {
  background-color: #667eea;
  color: white;
}

.btn-primary:hover {
  background-color: #5a6fd8;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
  background-color: #6c757d;
  color: white;
}

.btn-secondary:hover {
  background-color: #5a6268;
  transform: translateY(-2px);
}

/* Dashboard */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.client-card {
  background: #f8f9fa;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.client-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.client-card h3 {
  color: #495057;
  margin-bottom: 10px;
}

.client-card p {
  margin-bottom: 10px;
  color: #6c757d;
}

.client-card .actions {
  margin-top: 15px;
}

.client-card .actions .btn {
  margin-right: 10px;
  margin-bottom: 5px;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  header h1 {
    font-size: 2rem;
  }
  
  nav {
    flex-direction: column;
    align-items: center;
  }
  
  nav a {
    width: 80%;
    text-align: center;
  }
  
  .clients-grid {
    grid-template-columns: 1fr;
  }
  
  .client-card .actions .btn {
    display: block;
    width: 100%;
    margin-bottom: 10px;
  }
}