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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: #f9fafb;
  color: #111827;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.header {
  background: white;
  border-bottom: 1px solid #e5e7eb;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: #111827;
}

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  text-decoration: none;
  color: #6b7280;
  transition: color 0.2s;
}

.nav a:hover {
  color: #3b82f6;
}

.lang-switcher select {
  padding: 0.5rem 1rem;
  border: 1px solid #e5e7eb;
  border-radius: 6px;
  background: white;
  cursor: pointer;
}

.main {
  min-height: calc(100vh - 200px);
  padding: 2rem 0;
}

.footer {
  background: white;
  border-top: 1px solid #e5e7eb;
  padding: 2rem 0;
  text-align: center;
  color: #6b7280;
}

/* Tool Components */
.tool-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.tool-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.tool-section label {
  font-weight: 600;
  color: #374151;
}

.tool-section textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  resize: vertical;
}

.tool-section textarea:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.tool-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-primary {
  padding: 0.75rem 1.5rem;
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: background 0.2s;
}

.btn-primary:hover {
  background: #2563eb;
}

.btn-secondary {
  padding: 0.75rem 1.5rem;
  background: white;
  color: #374151;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-secondary:hover {
  background: #f3f4f6;
}

.btn-copy {
  padding: 0.75rem 1.5rem;
  background: #10b981;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
}

.btn-copy:hover {
  background: #059669;
}

.error-message {
  padding: 0.75rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #dc2626;
  font-size: 0.875rem;
}


/* Tool Components Styles */
.tool-container {
  width: 100%;
}

.control-group {
  margin-bottom: 1.5rem;
}

.control-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: #374151;
}

textarea,
input[type="text"],
input[type="number"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  resize: vertical;
  min-height: 120px;
}

textarea:focus,
input:focus {
  outline: none;
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.buttons {
  display: flex;
  gap: 0.75rem;
  margin: 1rem 0;
}

button,
.btn-primary,
.btn-secondary {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary,
button {
  background: #3b82f6;
  color: white;
}

.btn-primary:hover,
button:hover {
  background: #2563eb;
  transform: translateY(-1px);
}

.btn-secondary {
  background: #f3f4f6;
  color: #374151;
}

.btn-secondary:hover {
  background: #e5e7eb;
}

.output {
  background: #f9fafb;
  min-height: 120px;
}

/* Tool Page Styles */
.tool-page {
  max-width: 900px;
  margin: 0 auto;
}

.tool-header {
  text-align: center;
  margin-bottom: 3rem;
}

.tool-icon-large {
  font-size: 4rem;
  margin-bottom: 1rem;
}

.tool-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #111827;
}

.tool-description {
  font-size: 1.125rem;
  color: #6b7280;
}

.tool-content {
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
  .buttons {
    flex-direction: column;
  }
  
  button {
    width: 100%;
  }
}