:root {
  --primary-color: #6f42c1;
  --primary-dark: #5a32a3;
  --secondary-color: #20c997;
  --text-color: #333333;
  --light-bg: #f8f9fa;
  --dark-bg: #343a40;
  --border-color: #dee2e6;
  --hover-bg: #f0f2f5;
}

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: var(--text-color);
  line-height: 1.6;
  padding-bottom: 60px;
}

.navbar-dark {
  background-color: var(--dark-bg) !important;
}

.navbar-brand {
  font-weight: 700;
  color: white !important;
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.8) !important;
  transition: color 0.2s;
}

.navbar-dark .navbar-nav .nav-link:hover {
  color: white !important;
}

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

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

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

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

.card {
  transition: transform 0.3s, box-shadow 0.3s;
  border: none;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.badge {
  font-weight: 500;
  padding: 0.4em 0.6em;
}

.alert {
  border: none;
  border-radius: 8px;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.footer {
  padding: 20px 0;
  background-color: var(--light-bg);
  border-top: 1px solid var(--border-color);
  margin-top: 50px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .card {
    margin-bottom: 20px;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(111, 66, 193, 0.25);
}

.form-label {
  font-weight: 500;
}

.chat-header {
  padding: 15px;
  background-color: #6f42c1;
  color: white;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-settings {
  background-color: transparent;
  color: white;
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  padding: 0;
}

.btn-settings:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.btn-settings i {
  font-size: 1.2rem;
}

.modal-content {
  border-radius: 15px;
  border: none;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.modal-header {
  background-color: #6f42c1;
  color: white;
  border-top-left-radius: 15px;
  border-top-right-radius: 15px;
  padding: 15px 20px;
}

.modal-title {
  font-weight: 600;
}

.modal-body {
  padding: 20px;
}

.card {
  border-radius: 10px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  border: 1px solid #eee;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #333;
}

.modal-footer {
  border-top: 1px solid #eee;
  padding: 15px 20px;
}

.btn-close {
  color: white;
  opacity: 0.8;
}

.btn-close:hover {
  opacity: 1;
}

.form-control:focus {
  border-color: #6f42c1;
  box-shadow: 0 0 0 0.2rem rgba(111, 66, 193, 0.25);
}

.btn-primary {
  background-color: #6f42c1;
  border-color: #6f42c1;
}

.btn-primary:hover {
  background-color: #5a32a3;
  border-color: #5a32a3;
}

.chat-image {
  max-width: 100%;
  max-height: 300px;
  border-radius: 8px;
  margin: 5px 0;
  object-fit: contain;
}

.progress {
  height: 10px;
  border-radius: 5px;
}