@import url('https://fonts.googleapis.com/css2?family=Sarabun:wght@300;400;500;600;700&display=swap');

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

body {
  font-family: 'Sarabun', sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
}

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

.content-box {
  background: #ffffff;
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  margin-bottom: 20px;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 2px solid #f0f0f0;
}

.header h1 {
  color: #667eea;
  font-size: 32px;
  font-weight: 700;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Buttons */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 8px;
  font-family: 'Sarabun', sans-serif;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-success {
  background: #10b981;
  color: white;
}

.btn-success:hover {
  background: #059669;
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(16, 185, 129, 0.4);
}

.btn-warning {
  background: #f59e0b;
  color: white;
}

.btn-warning:hover {
  background: #d97706;
  transform: translateY(-2px);
}

.btn-danger {
  background: #ef4444;
  color: white;
}

.btn-danger:hover {
  background: #dc2626;
  transform: translateY(-2px);
}

.btn-secondary {
  background: #6b7280;
  color: white;
}

.btn-secondary:hover {
  background: #4b5563;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: #374151;
  font-weight: 500;
  font-size: 16px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 8px;
  font-family: 'Sarabun', sans-serif;
  font-size: 16px;
  transition: all 0.3s ease;
}

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

select.form-control {
  cursor: pointer;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

table thead {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

table th {
  padding: 15px;
  text-align: left;
  font-weight: 600;
  font-size: 16px;
}

table td {
  padding: 15px;
  border-bottom: 1px solid #f0f0f0;
}

table tbody tr {
  transition: background-color 0.2s ease;
}

table tbody tr:hover {
  background-color: #f9fafb;
}

.table-actions {
  display: flex;
  gap: 8px;
}

/* Login Page */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  background: white;
  border-radius: 15px;
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h1 {
  color: #667eea;
  font-size: 28px;
  margin-bottom: 10px;
}

.error-message {
  background: #fee2e2;
  color: #dc2626;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  text-align: center;
}

/* Dashboard */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.stat-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
  opacity: 0.9;
}

.stat-card .stat-number {
  font-size: 48px;
  font-weight: 700;
}

.nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.nav-card {
  background: white;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  padding: 30px;
  text-align: center;
  text-decoration: none;
  color: #374151;
  transition: all 0.3s ease;
}

.nav-card:hover {
  border-color: #667eea;
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(102, 126, 234, 0.2);
}

.nav-card h3 {
  font-size: 20px;
  color: #667eea;
  margin-bottom: 10px;
}

/* Game badges */
.game-badge {
  display: inline-block;
  padding: 6px 12px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border-radius: 6px;
  margin: 4px;
  font-size: 14px;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: 15px;
    text-align: center;
  }
  
  .header-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .btn {
    width: 100%;
  }
  
  table {
    font-size: 14px;
  }
  
  table th,
  table td {
    padding: 10px;
  }
}

/* Utility classes */
.text-center {
  text-align: center;
}

.mt-20 {
  margin-top: 20px;
}

.mb-20 {
  margin-bottom: 20px;
}

.flex-end {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  margin-top: 10px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.checkbox-item label {
  margin: 0;
  cursor: pointer;
}