:root {
  --primary-color: #4361ee;
  --primary-dark: #3a56d4;
  --secondary-color: #3f37c9;
  --accent-color: #4cc9f0;
  --text-color: #2b2d42;
  --light-text: #8d99ae;
  --background-color: #f8f9fa;
  --card-bg: #ffffff;
  --border-radius: 8px;
  --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  background-color: var(--background-color);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 1rem 0;
  box-shadow: var(--box-shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

header h1 {
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

header nav {
  display: flex;
  gap: 1rem;
}

header button {
  background-color: transparent;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

header button:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.app-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 2rem 0;
}

.generator-section {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.input-group label {
  font-weight: 600;
  font-size: 0.9rem;
}

.input-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  resize: vertical;
  min-height: 100px;
  font-family: inherit;
  transition: var(--transition);
}

.input-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.char-count {
  font-size: 0.8rem;
  color: var(--light-text);
  text-align: right;
}

.customization-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.option-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.option-group label {
  font-weight: 600;
  font-size: 0.9rem;
}

.option-group select, 
.option-group input[type="color"],
.option-group input[type="file"] {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  background-color: white;
  font-family: inherit;
  transition: var(--transition);
}

.option-group select:focus,
.option-group input[type="color"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.option-group input[type="color"] {
  padding: 0.2rem;
  height: 40px;
  cursor: pointer;
}

.qr-templates {
  margin-bottom: 1.5rem;
}

.qr-templates h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--light-text);
}

.template-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.template-buttons button {
  background-color: #f0f4ff;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius);
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition);
}

.template-buttons button:hover {
  background-color: #e0e8ff;
}

.primary-btn {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
}

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

.preview-section {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  position: sticky;
  top: 6rem;
  align-self: flex-start;
}

.qr-container {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1/1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: white;
  border: 1px solid #eee;
  border-radius: var(--border-radius);
  padding: 1rem;
}

.qr-container .placeholder {
  text-align: center;
  color: var(--light-text);
}

.qr-container .placeholder i {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: #e9ecef;
}

.qr-container .placeholder p {
  font-size: 0.9rem;
}

.qr-container canvas {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

.qr-actions {
  display: flex;
  gap: 1rem;
  width: 100%;
  justify-content: center;
}

.secondary-btn {
  background-color: white;
  color: var(--primary-color);
  border: 1px solid var(--primary-color);
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.secondary-btn:hover {
  background-color: #f0f4ff;
}

.secondary-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.history-section, .scan-section {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  margin-bottom: 2rem;
}

.history-section h2, .scan-section h2 {
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.history-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
}

.history-item {
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.history-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.history-item img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

.history-item p {
  font-size: 0.8rem;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
}

.scanner-container {
  position: relative;
  width: 100%;
  max-width: 500px;
  margin: 0 auto 1.5rem;
}

#scanner {
  width: 100%;
  border-radius: var(--border-radius);
  display: block;
}

#scan-canvas {
  display: none;
}

.scan-result {
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  padding: 1rem;
  margin-top: 1rem;
  text-align: center;
}

.scan-result a {
  color: var(--primary-color);
  word-break: break-all;
}

.hidden {
  display: none;
}

footer {
  background-color: var(--text-color);
  color: white;
  padding: 3rem 0 1.5rem;
  margin-top: 3rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-brand p {
  opacity: 0.8;
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  align-items: flex-end;
}

.footer-links a {
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent-color);
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-bottom p a {
  text-decoration: none;
  color: white;
}


/* Help */
.help-container {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--box-shadow);
  margin: 2rem 0;
}

.help-section {
  margin-bottom: 2.5rem;
}

.help-section h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #eee;
}

.help-item {
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
  padding: 1.2rem;
  margin-bottom: 1.5rem;
}

.help-item h4 {
  margin-bottom: 0.8rem;
  color: var(--text-color);
}

.contact-section {
  background-color: #f0f4ff;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-top: 3rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-top: 1rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  text-decoration: none;
}

.contact-link:hover {
  text-decoration: underline;
}

.last-updated {
  color: var(--light-text);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* Navigation Link Styles */
.logo-link {
  text-decoration: none;
  color: white;
}

.nav-link {
  color: white;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

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


/* Privacy Styles */
.privacy-container {
  max-width: 800px;
  margin: 2rem auto;
}

.privacy-section {
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  background-color: #f8f9fa;
  border-radius: var(--border-radius);
}

.privacy-section h3 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.privacy-section ul {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.privacy-section li {
  margin-bottom: 0.8rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.privacy-section li i {
  color: var(--primary-color);
  margin-top: 0.2rem;
}

.privacy-note {
  background-color: #e0e8ff;
  padding: 1rem;
  border-radius: var(--border-radius);
  display: flex;
  gap: 0.8rem;
  margin-top: 1rem;
}

.privacy-note i {
  color: var(--primary-color);
  font-size: 1.2rem;
}

.privacy-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.feature {
  background-color: white;
  padding: 1.2rem;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: var(--box-shadow);
}

.feature i {
  font-size: 1.5rem;
  color: var(--primary-color);
  margin-bottom: 0.8rem;
}

.feature p {
  font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .privacy-features {
    grid-template-columns: 1fr;
  }
  
  .privacy-section {
    padding: 1.2rem;
  }
}

@media (max-width: 480px) {
  .privacy-container {
    padding: 1rem;
  }
  
  .privacy-section h3 {
    font-size: 1.2rem;
  }
}

/* Responsive Styles */
@media (max-width: 768px) {
  .help-container, .privacy-container {
    padding: 1.5rem;
  }
  
  .help-item, .contact-section {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .help-container, .privacy-container {
    padding: 1rem;
  }
  
  .help-section h3, .privacy-section h3 {
    font-size: 1.2rem;
  }
}

@media (max-width: 768px) {
  .app-container {
    grid-template-columns: 1fr;
  }
  
  .customization-options {
    grid-template-columns: 1fr;
  }
  
  .preview-section {
    position: static;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-links {
    align-items: center;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }
  
  .qr-actions {
    flex-direction: column;
  }
  
  .secondary-btn {
    width: 100%;
  }
  
  .history-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
}