/* ========== Base64 Tool Page ========== */
.tool-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

.tool-header {
  text-align: center;
  margin-bottom: 24px;
}

.tool-header h1 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-heading);
  margin-bottom: 8px;
}

.tool-header .tool-desc {
  font-size: 16px;
  color: var(--color-muted);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Toolbar */
.tool-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 16px;
  padding: 16px;
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.tool-btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.tool-btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

.tool-btn-secondary {
  background: #10b981;
  color: #fff;
}

.tool-btn-secondary:hover {
  background: #059669;
}

.tool-btn-outline {
  background: #fff;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.tool-btn-outline:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.tool-btn-danger {
  background: #ef4444;
  color: #fff;
}

.tool-btn-danger:hover {
  background: #dc2626;
}

.tool-btn-purple {
  background: #8b5cf6;
  color: #fff;
}

.tool-btn-purple:hover {
  background: #7c3aed;
  transform: translateY(-1px);
}

.tool-btn.active-mode {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Options bar */
.options-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-bottom: 16px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.option-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text);
  cursor: pointer;
  user-select: none;
}

.option-toggle input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

/* Mode tabs */
.mode-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: #f3f4f6;
  border-radius: 8px;
  margin-bottom: 16px;
}

.mode-tab {
  flex: 1;
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  background: transparent;
  color: #6b7280;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.mode-tab:hover {
  color: #374151;
  background: rgba(0,0,0,0.03);
}

.mode-tab.active {
  background: #fff;
  color: var(--color-primary);
  box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

/* Main editor area */
.tool-editor {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.editor-panel {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.editor-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-bottom: 1px solid var(--color-border);
}

.editor-panel-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-heading);
}

.editor-panel-header .panel-actions {
  display: flex;
  gap: 8px;
}

.panel-btn {
  padding: 6px 12px;
  font-size: 13px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: #fff;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
}

.panel-btn:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.editor-panel textarea {
  width: 100%;
  height: 300px;
  padding: 16px;
  border: none;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 14px;
  line-height: 1.6;
  resize: none;
  background: #1e1e2e;
  color: #cdd6f4;
}

.editor-panel textarea:focus {
  outline: none;
}

.editor-panel textarea.output-area {
  background: #1e1e2e;
  color: #a6e3a1;
}

.editor-panel textarea.output-area.error-output {
  color: #f38ba8;
}

.editor-panel textarea::placeholder {
  color: #6c7086;
}

/* File upload area */
.file-upload-area {
  display: none;
  margin-bottom: 20px;
}

.file-upload-area.active {
  display: block;
}

.file-upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 24px;
  background: var(--color-bg-card);
  border: 2px dashed var(--color-border);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 200px;
}

.file-upload-zone:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-active);
}

.file-upload-zone.dragover {
  border-color: var(--color-primary);
  background: #eff6ff;
}

.file-upload-zone .upload-icon {
  font-size: 48px;
  color: var(--color-primary);
  opacity: 0.6;
}

.file-upload-zone .upload-text {
  font-size: 16px;
  color: var(--color-text);
}

.file-upload-zone .upload-text span {
  color: var(--color-primary);
  font-weight: 600;
}

.file-upload-zone .upload-hint {
  font-size: 13px;
  color: var(--color-muted);
}

.file-upload-zone input[type="file"] {
  display: none;
}

/* File result display */
.file-result {
  display: none;
  margin-top: 16px;
}

.file-result.active {
  display: block;
}

.file-result .file-info {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  margin-bottom: 12px;
}

.file-result .file-info .file-name {
  font-weight: 600;
  color: #16a34a;
}

.file-result .file-info .file-size {
  color: #6b7280;
  font-size: 13px;
}

.file-result .result-actions {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.file-result textarea {
  width: 100%;
  height: 180px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
  background: #1e1e2e;
  color: #a6e3a1;
  word-break: break-all;
}

/* Stats bar */
.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  padding: 12px 16px;
  background: var(--color-bg-card);
  border-radius: 8px;
  border: 1px solid var(--color-border);
  margin-bottom: 12px;
  font-size: 14px;
  color: var(--color-text);
  align-items: center;
}

.stats-bar .stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.stats-bar .stat-label {
  color: var(--color-muted);
}

.stats-bar .stat-value {
  font-weight: 600;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.stats-bar .stat-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}

.stat-badge-expand {
  background: #fef3c7;
  color: #92400e;
}

.stat-badge-same {
  background: #dbeafe;
  color: #1e40af;
}

.stat-badge-shrink {
  background: #d1fae5;
  color: #065f46;
}

/* Status */
.status-box {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 12px;
  font-size: 14px;
  display: none;
}

.status-box.show {
  display: block;
}

.status-success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #16a34a;
}

.status-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #dc2626;
}

.status-info {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1d4ed8;
}

/* Info section */
.tool-info {
  margin-top: 32px;
  padding: 24px;
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.tool-info h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-heading);
  margin-bottom: 16px;
}

.tool-info h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-heading);
  margin: 20px 0 12px;
}

.tool-info p {
  font-size: 15px;
  color: var(--color-text);
  line-height: 1.8;
  margin-bottom: 12px;
}

.tool-info ul {
  margin: 0 0 16px 24px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text);
}

.tool-info li {
  margin-bottom: 6px;
}

.tool-info code {
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  color: #be185d;
}

.tool-info .info-tip {
  padding: 12px 16px;
  background: #eff6ff;
  border-radius: 8px;
  color: #1e40af;
  margin-top: 16px;
}

/* Base64 table */
.base64-table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13px;
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.base64-table th,
.base64-table td {
  padding: 6px 10px;
  border: 1px solid var(--color-border);
  text-align: center;
}

.base64-table th {
  background: var(--color-bg-card);
  font-weight: 600;
  color: var(--color-heading);
}

.base64-table td {
  color: var(--color-text);
}

/* Responsive */
@media (max-width: 900px) {
  .tool-editor {
    grid-template-columns: 1fr;
  }
  
  .editor-panel textarea {
    height: 200px;
  }
}

@media (max-width: 600px) {
  .tool-container {
    padding: 16px;
  }
  
  .tool-header h1 {
    font-size: 24px;
  }
  
  .tool-toolbar {
    padding: 12px;
    gap: 8px;
  }
  
  .tool-btn {
    padding: 8px 14px;
    font-size: 13px;
  }
  
  .options-bar {
    padding: 10px 12px;
    gap: 10px;
  }
  
  .editor-panel textarea {
    height: 150px;
  }
  
  .stats-bar {
    gap: 10px;
    font-size: 13px;
  }

  .mode-tab {
    padding: 8px 12px;
    font-size: 13px;
  }
}