:root {
  --primary-color: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --success-color: #10b981;
  --success-light: #d1fae5;
  --danger-color: #ef4444;
  --danger-light: #fee2e2;
  --warning-color: #f59e0b;
  --warning-light: #fef3c7;
  --info-color: #3b82f6;
  --info-light: #dbeafe;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --border-color: #e5e7eb;
  --border-light: #f3f4f6;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-primary);
  background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
  line-height: 1.6;
  min-height: 100vh;
}

#app {
  display: none;
}

#app[data-v-app] {
  display: block;
}

[v-cloak] {
  display: none !important;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.navbar {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  padding: 0.875rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: 1.375rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--primary-color);
  -webkit-text-fill-color: var(--primary-color);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  transition: all 0.2s;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-color);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.lang-switch {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.lang-switch:hover {
  border-color: var(--primary-color);
}

.page {
  padding: 2.5rem 0;
}

.card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border-light);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), #6366f1);
  color: white;
  box-shadow: 0 2px 4px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-hover), #4f46e5);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(79, 70, 229, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-success {
  background: linear-gradient(135deg, var(--success-color), #34d399);
  color: white;
  box-shadow: 0 2px 4px rgba(16, 185, 129, 0.25);
}

.btn-success:hover {
  background: linear-gradient(135deg, #059669, var(--success-color));
  transform: translateY(-1px);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-color), #f87171);
  color: white;
  box-shadow: 0 2px 4px rgba(239, 68, 68, 0.25);
}

.btn-danger:hover {
  background: linear-gradient(135deg, #dc2626, var(--danger-color));
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  border-color: var(--text-muted);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

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

.form-group {
  margin-bottom: 1.125rem;
}

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

.form-input,
.form-select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  transition: all 0.2s;
  background: var(--bg-primary);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.alert-success {
  background: var(--success-light);
  color: #065f46;
  border: 1px solid #a7f3d0;
}

.alert-error {
  background: var(--danger-light);
  color: #991b1b;
  border: 1px solid #fecaca;
}

.alert-info {
  background: var(--info-light);
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

.hero {
  text-align: center;
  padding: 4rem 1rem;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.feature-card {
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.feature-card h3 {
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  font-weight: 600;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--primary-light), #e0e7ff);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  max-width: 540px;
  width: 92%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.25s ease;
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-light);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: var(--bg-tertiary);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

.modal-close:hover {
  background: var(--danger-light);
  color: var(--danger-color);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.ca-list {
  display: grid;
  gap: 1rem;
}

.ca-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: all 0.2s;
  background: var(--bg-primary);
}

.ca-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.ca-info h3 {
  font-size: 1rem;
  margin-bottom: 0.375rem;
  color: var(--text-primary);
  font-weight: 600;
}

.ca-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.ca-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.cert-result {
  background: var(--bg-tertiary);
  padding: 1.25rem;
  border-radius: var(--radius);
  margin-top: 1.25rem;
  border: 1px solid var(--border-light);
}

.cert-result h3 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.cert-result h4 {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.cert-result pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 1rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-size: 0.75rem;
  line-height: 1.5;
}

.cert-list {
  border-top: 1px solid var(--border-light);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}

.cert-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  transition: all 0.2s;
  background: var(--bg-primary);
  margin-bottom: 0.75rem;
}

.cert-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.cert-info h4 {
  font-size: 1rem;
  margin-bottom: 0.375rem;
  color: var(--text-primary);
  font-weight: 600;
}

.cert-meta {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.cert-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.san-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.san-row {
  display: flex;
  gap: 0.5rem;
}

.san-type {
  width: 110px;
  flex-shrink: 0;
}

.san-value {
  flex: 1;
}

.form-hint {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.375rem;
}

@media (max-width: 768px) {
  .features {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .hero h1 {
    font-size: 2.25rem;
  }
  
  .ca-item,
  .cert-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .ca-actions,
  .cert-actions {
    width: 100%;
  }
  
  .ca-actions .btn,
  .cert-actions .btn {
    flex: 1;
  }
}

/* Home Page New Sections */
.home-sections {
  margin-top: 3rem;
}

.home-section {
  margin-bottom: 2rem;
}

.home-section h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.step {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.step-number {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-color), #6366f1);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 1.0625rem;
  margin-bottom: 0.375rem;
  color: var(--text-primary);
  font-weight: 600;
}

.step-content p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.benefits-list {
  list-style: none;
}

.benefits-list li {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-light);
}

.benefits-list li:last-child {
  border-bottom: none;
}

.benefit-icon {
  width: 28px;
  height: 28px;
  background: var(--success-light);
  color: var(--success-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.benefits-list strong {
  display: block;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.benefits-list p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.tech-item {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius);
}

.tech-icon {
  width: 44px;
  height: 44px;
  background: var(--primary-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.tech-item strong {
  display: block;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.tech-item p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.cta-section {
  margin-top: 3rem;
}

.cta-card {
  text-align: center;
  padding: 3rem 2rem;
  background: linear-gradient(135deg, var(--primary-color), #7c3aed);
  color: white;
  border: none;
}

.cta-card h2 {
  color: white;
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.cta-card p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.0625rem;
  margin-bottom: 1.5rem;
}

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

.cta-card .btn:hover {
  background: rgba(255, 255, 255, 0.9);
}

@media (max-width: 768px) {
  .tech-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-card {
    padding: 2rem 1.5rem;
  }
  
  .cta-card h2 {
    font-size: 1.5rem;
  }
}