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

:root {
  --primary-blue: #0066cc;
  --ocean-blue: #006bb3;
  --light-blue: #4da6ff;
  --dark-blue: #004080;
  --accent-blue: #00aaff;
  --bg-light: #f0f8ff;
  --bg-white: #ffffff;
  --text-dark: #1a1a1a;
  --text-light: #666666;
  --border-color: #e1ecf4;
  --shadow: 0 4px 20px rgba(0, 102, 204, 0.1);
  --shadow-hover: 0 8px 30px rgba(0, 102, 204, 0.15);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--bg-light) 0%, #e6f3ff 100%);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header Styles */
.header {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--ocean-blue) 100%);
  color: white;
  padding: 40px 30px;
  border-radius: 20px;
  margin-bottom: 30px;
  box-shadow: var(--shadow);
  text-align: center;
}

.header-content h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-icon {
  font-size: 3rem;
  margin-bottom: 20px;
  opacity: 0.9;
}

.header-content p {
  font-size: 1.1rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* Main Content */
.main-content {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

.input-section,
.output-section {
  background: var(--bg-white);
  border-radius: 15px;
  padding: 25px;
  box-shadow: var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.input-section:hover,
.output-section:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--border-color);
}

.section-header i {
  color: var(--primary-blue);
  font-size: 1.5rem;
}

.section-header h2 {
  color: var(--dark-blue);
  font-size: 1.4rem;
  font-weight: 600;
}

.result-count {
  margin-left: auto;
  background: var(--light-blue);
  color: white;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* Input Styles */
.input-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

#xmlInput {
  width: 100%;
  padding: 15px;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  resize: vertical;
  min-height: 300px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

#xmlInput:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

#xmlInput::placeholder {
  color: var(--text-light);
  font-style: italic;
}

/* Button Styles */
.btn {
  padding: 12px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  min-width: 120px;
  justify-content: center;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--ocean-blue) 100%);
  color: white;
}

.btn-secondary {
  background: linear-gradient(135deg, #6c757d 0%, #5a6268 100%);
  color: white;
}

.btn-success {
  background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  color: white;
}

.btn-info {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--light-blue) 100%);
  color: white;
}

.input-actions,
.output-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Results Styles */
.output-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.results-list {
  background: #f8f9fa;
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 15px;
  min-height: 300px;
  max-height: 400px;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.8;
}

.results-list:empty::before {
  content: "Hasil ekstraksi akan muncul di sini...";
  color: var(--text-light);
  font-style: italic;
  font-family: 'Segoe UI', sans-serif;
}

.url-item {
  padding: 8px 12px;
  margin-bottom: 5px;
  background: white;
  border-left: 4px solid var(--primary-blue);
  border-radius: 5px;
  transition: all 0.3s ease;
  cursor: pointer;
}

.url-item:hover {
  background: var(--bg-light);
  transform: translateX(5px);
  box-shadow: 0 2px 8px rgba(0, 102, 204, 0.1);
}

/* Footer */
.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-light);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

/* Toast Notification */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
  color: white;
  padding: 15px 20px;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateX(400px);
  transition: transform 0.3s ease;
  z-index: 1000;
}

.toast.show {
  transform: translateX(0);
}

.toast i {
  font-size: 1.2rem;
}

/* Scrollbar Styling */
.results-list::-webkit-scrollbar {
  width: 8px;
}

.results-list::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 4px;
}

.results-list::-webkit-scrollbar-thumb {
  background: var(--primary-blue);
  border-radius: 4px;
}

.results-list::-webkit-scrollbar-thumb:hover {
  background: var(--ocean-blue);
}

/* Responsive Design */
@media (max-width: 768px) {
  .main-content {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .header-content h1 {
    font-size: 2rem;
  }
  
  .header-icon {
    font-size: 2.5rem;
  }
  
  .input-actions,
  .output-actions {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  
  .result-count {
    margin-left: 0;
    align-self: flex-start;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 10px;
  }
  
  .header {
    padding: 30px 20px;
  }
  
  .input-section,
  .output-section {
    padding: 20px;
  }
  
  .header-content h1 {
    font-size: 1.8rem;
  }
}

/* Animation for URL items */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.url-item {
  animation: slideIn 0.3s ease forwards;
}

/* Navigation Styles */
.nav {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  padding: 15px;
  background: var(--bg-white);
  border-radius: 15px;
  box-shadow: var(--shadow);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: all 0.3s ease;
}

.nav-link:hover {
  background: var(--bg-light);
  color: var(--primary-blue);
  transform: translateY(-2px);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--ocean-blue) 100%);
  color: white;
}

/* About Page Styles */
.about-section,
.features-section,
.usage-section,
.example-section {
  background: var(--bg-white);
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.about-content p {
  margin-bottom: 15px;
  line-height: 1.8;
  color: var(--text-dark);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.feature-card {
  background: var(--bg-light);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card i {
  font-size: 2rem;
  color: var(--primary-blue);
  margin-bottom: 15px;
}

.feature-card h3 {
  color: var(--dark-blue);
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.feature-card p {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

.usage-steps {
  margin-top: 20px;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 25px;
  padding: 20px;
  background: var(--bg-light);
  border-radius: 10px;
}

.step-number {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--ocean-blue) 100%);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.step-content h3 {
  color: var(--dark-blue);
  margin-bottom: 8px;
  font-size: 1.1rem;
}

.step-content p {
  color: var(--text-light);
  line-height: 1.6;
  margin: 0;
}

.example-content {
  margin-top: 20px;
  padding: 20px;
  background: var(--bg-light);
  border-radius: 10px;
}

.example-before,
.example-after {
  margin-bottom: 15px;
}

.example-before h4,
.example-after h4 {
  color: var(--dark-blue);
  margin-bottom: 8px;
  font-size: 1rem;
}

.example-before code,
.example-after code {
  background: white;
  padding: 10px 15px;
  border-radius: 5px;
  display: block;
  font-family: 'Courier New', monospace;
  border-left: 4px solid var(--primary-blue);
  color: var(--text-dark);
}

.example-arrow {
  text-align: center;
  margin: 20px 0;
}

.example-arrow i {
  font-size: 1.5rem;
  color: var(--primary-blue);
}