/* Modern Professional CSS Reset */
:root {
  --primary: #3498db;
  --primary-dark: #2980b9;
  --secondary: #2ecc71;
  --danger: #e74c3c;
  --warning: #f39c12;
  --dark: #2c3e50;
  --light: #ecf0f1;
  --gray: #95a5a6;
  --border: #dfe6e9;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: 'Segoe UI', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.5;
  background-color: #f8f9fa;
  color: #333;
  font-size: 14px;
}

/* Compact Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem;
}

/* Professional Header */
header {
  background-color: white;
  box-shadow: var(--shadow);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
}

nav ul li a {
  color: var(--dark);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  padding: 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
}

nav ul li a:hover {
  color: var(--primary);
  background-color: rgba(52, 152, 219, 0.1);
}

/* Compact Login Form */
.login-container {
  max-width: 400px;
  margin: 2rem auto;
  padding: 2rem;
  background: white;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.login-container h2 {
  margin-bottom: 1.5rem;
  text-align: center;
  font-size: 1.5rem;
  color: var(--dark);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--dark);
}

.form-control {
  width: 100%;
  padding: 0.625rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.875rem;
  transition: border 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
}

.btn-danger {
  background-color: var(--danger);
  color: white;
}

.btn-danger:hover {
  background-color: #c0392b;
}

.btn-warning {
  background-color: var(--warning);
  color: white;
}

.btn-warning:hover {
  background-color: #e67e22;
}

.btn-info {
  background-color: var(--gray);
  color: white;
}

.btn-info:hover {
  background-color: #7f8c8d;
}

/* Compact Dashboard */
.dashboard h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: white;
  padding: 1rem;
  border-radius: 6px;
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-card h3 {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--gray);
  font-weight: 500;
  text-transform: uppercase;
}

.stat-card p {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark);
}

/* Compact Tables */
.table-responsive {
  overflow-x: auto;
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.table th {
  background-color: white;
  color: var(--dark);
  font-weight: 600;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--border);
}

.table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover td {
  background-color: rgba(52, 152, 219, 0.05);
}

/* Compact Alerts */
.alert {
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  border-radius: 4px;
  font-size: 0.875rem;
}

.alert-danger {
  background-color: rgba(231, 76, 60, 0.1);
  color: #c0392b;
  border-left: 3px solid var(--danger);
}

.alert-success {
  background-color: rgba(46, 204, 113, 0.1);
  color: #27ae60;
  border-left: 3px solid var(--secondary);
}

/* Form Cards */
.card {
  background: white;
  border-radius: 8px;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.card-header {
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}

.card-header h5 {
  font-size: 1rem;
  color: var(--dark);
}

.card-body {
  padding: 1rem;
}

/* Compact Pagination */
.pagination {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.page-item {
  list-style: none;
}

.page-link {
  display: block;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--dark);
  text-decoration: none;
  font-size: 0.875rem;
}

.page-item.active .page-link {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  .container {
    padding: 0.75rem;
  }
  
  .stats-container {
    grid-template-columns: 1fr 1fr;
  }
  
  nav ul {
    gap: 0.5rem;
  }
}

@media (max-width: 576px) {
  .stats-container {
    grid-template-columns: 1fr;
  }
  
  header .container {
    flex-direction: column;
    gap: 0.75rem;
  }
  
  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .login-container {
    padding: 1.5rem;
    margin: 1rem;
  }
}