.tool-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

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

.tool-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
}

.tool-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* AST Input Section */
.ast-input-section {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.ast-input-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
}

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

.ast-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.ast-label i {
  color: var(--primary-color);
}

.ast-textarea {
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  font-family: "Fira Code", "Consolas", monospace;
  line-height: 1.6;
  resize: vertical;
  min-height: 200px;
}

.ast-textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.2);
}

.ast-options {
  margin-top: 1rem;
}

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

.ast-option-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.ast-option-label i {
  color: var(--primary-color);
}

.ast-options-row {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.ast-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.ast-option:hover {
  color: var(--text-primary);
}

.ast-option input[type="checkbox"] {
  accent-color: var(--primary-color);
}

/* Parse Button */
.ast-convert {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.ast-btn-parse {
  padding: 1rem 3rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.ast-btn-parse:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.3);
}

.ast-btn-parse:active {
  transform: translateY(-1px);
}

/* AST Output Section */
.ast-output {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.ast-output::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-primary);
}

.ast-output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.ast-output-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

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

.ast-btn-action,
.ast-btn-copy {
  padding: 0.5rem 1rem;
  background: var(--bg-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ast-btn-action:hover,
.ast-btn-copy:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.ast-btn-copy.copied {
  background: #00d084;
  color: white;
  border-color: #00d084;
}

.ast-result {
  background: rgba(255, 107, 53, 0.05);
  border-radius: var(--radius-md);
  min-height: 200px;
  max-height: 600px;
  overflow-y: auto;
  font-family: "Fira Code", "Consolas", monospace;
  font-size: 0.9rem;
  line-height: 1.6;
}

.ast-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--text-secondary);
  text-align: center;
}

.ast-placeholder i {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-color);
  opacity: 0.7;
}

.ast-placeholder .fa-spinner {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* AST Tree Styles */
.ast-tree {
  padding: 1rem;
}

.ast-node {
  margin: 0.25rem 0;
  font-family: "Fira Code", "Consolas", monospace;
  transition: all 0.2s ease;
}

.ast-node.collapsed .ast-node-children {
  display: none;
}

.ast-node-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  border: 1px solid transparent;
  position: relative;
}

.ast-node-header:hover {
  background: rgba(255, 107, 53, 0.1);
  border-color: rgba(255, 107, 53, 0.2);
  transform: translateX(2px);
}

.ast-node-header.collapsible {
  cursor: pointer;
}

.ast-node-header.literal-node {
  cursor: pointer;
}

.ast-node-toggle {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--primary-color);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.ast-node-spacer {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.ast-node.collapsed .ast-node-toggle {
  transform: rotate(-90deg);
}

.ast-node-key {
  color: var(--text-primary);
  font-weight: 500;
  margin-right: 0.5rem;
}

/* Color coding for different node types */
.ast-node-type.program {
  color: #4dabf7;
  background: rgba(77, 171, 247, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.declaration {
  color: #51cf66;
  background: rgba(81, 207, 102, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.identifier {
  color: #ffd43b;
  background: rgba(255, 212, 59, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.literal {
  color: #ff8cc8;
  background: rgba(255, 140, 200, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.expression {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.statement {
  color: #9775fa;
  background: rgba(151, 117, 250, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.array {
  color: #74c0fc;
  background: rgba(116, 192, 252, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-type.default {
  color: var(--primary-color);
  background: rgba(255, 107, 53, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.ast-node-info {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-left: 0.5rem;
  font-style: italic;
}

.ast-node-value {
  color: var(--text-secondary);
  margin-left: 0.5rem;
}

.ast-node-value.string {
  color: #98c379;
}

.ast-node-value.number {
  color: #d19a66;
}

.ast-node-value.boolean {
  color: #56b6c2;
}

.ast-node-value.null {
  color: #e06c75;
}

.ast-node-children {
  margin-left: 1.5rem;
  border-left: 2px solid rgba(255, 255, 255, 0.1);
  padding-left: 1rem;
  position: relative;
}

.ast-node-children::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    to bottom,
    rgba(255, 107, 53, 0.3) 0%,
    rgba(255, 107, 53, 0.1) 50%,
    transparent 100%
  );
}

.ast-error {
  background: rgba(218, 54, 51, 0.1);
  border: 1px solid rgba(218, 54, 51, 0.3);
  border-radius: var(--radius-md);
  padding: 1rem;
  color: var(--error-color);
  font-family: "Fira Code", "Consolas", monospace;
  white-space: pre-wrap;
}

/* Tooltip Styles */
.ast-tooltip {
  position: absolute;
  background: var(--bg-tertiary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(10px);
  max-width: 300px;
  line-height: 1.4;
}

.ast-tooltip strong {
  color: var(--primary-color);
}

/* Code highlighting styles */
.ast-textarea.code-highlighted {
  border-color: var(--primary-color);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.3);
  background: rgba(255, 107, 53, 0.05);
}

/* Enhanced animations */
.ast-node {
  animation: fadeInUp 0.3s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ast-node-header {
  animation: slideInLeft 0.2s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Depth-based indentation */
.ast-node[data-depth="0"] {
  --indent: 0rem;
}
.ast-node[data-depth="1"] {
  --indent: 1rem;
}
.ast-node[data-depth="2"] {
  --indent: 2rem;
}
.ast-node[data-depth="3"] {
  --indent: 3rem;
}
.ast-node[data-depth="4"] {
  --indent: 4rem;
}
.ast-node[data-depth="5"] {
  --indent: 5rem;
}
.ast-node[data-depth="6"] {
  --indent: 6rem;
}
.ast-node[data-depth="7"] {
  --indent: 7rem;
}
.ast-node[data-depth="8"] {
  --indent: 8rem;
}
.ast-node[data-depth="9"] {
  --indent: 9rem;
}
.ast-node[data-depth="10"] {
  --indent: 10rem;
}

.back-button {
  position: fixed;
  top: 2rem;
  left: 2rem;
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
  backdrop-filter: blur(20px);
}

.back-button:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}