/* ========================================
   PanConverter v1.7.1 - Modern UI
   Glassmorphism, Gradients & Animations
   ======================================== */

/* Modern Color Palette */
:root {
  /* Primary Brand Colors - Purple-Blue Gradient */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-light: #8b9aff;
  --primary-dark: #5661b3;

  /* Accent Colors */
  --accent-green: #10b981;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;

  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);

  /* Effects */
  --blur-amount: 10px;
  --transition-speed: 0.3s;
  --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  overflow: hidden;
  height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
  background-size: 200% 200%;
  animation: gradientShift 15s ease infinite;
  color: var(--gray-900);
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 12px;
  gap: 12px;
}

/* Glass Container for main content */
.main-content-glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--blur-amount));
  -webkit-backdrop-filter: blur(var(--blur-amount));
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  box-shadow: var(--glass-shadow);
  overflow: hidden;
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Tab Bar - Modern Glassmorphism */
.tab-bar {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 12px;
  min-height: 48px;
  gap: 6px;
}

.tab {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 12px;
  margin-right: 4px;
  cursor: pointer;
  user-select: none;
  max-width: 200px;
  min-width: 120px;
  transition: all var(--transition-speed) var(--transition-ease);
  transform: translateY(0);
}

.tab:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.tab.active {
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.9), rgba(118, 75, 162, 0.9));
  color: white;
  border-color: rgba(255, 255, 255, 0.5);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
  transform: translateY(-2px);
}

.tab-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 500;
}

.tab-close {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  padding: 4px;
  margin-left: 8px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  color: currentColor;
  transition: all var(--transition-speed) var(--transition-ease);
}

.tab-close:hover {
  background: rgba(255, 255, 255, 0.4);
  transform: rotate(90deg);
}

.new-tab-button {
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 10px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--gray-700);
  transition: all var(--transition-speed) var(--transition-ease);
  display: flex;
  align-items: center;
  gap: 6px;
}

.new-tab-button:hover {
  background: rgba(255, 255, 255, 0.5);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Toolbar - Modern Gradient Buttons */
.toolbar {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  gap: 6px;
}

.toolbar button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition-speed) var(--transition-ease);
  color: var(--gray-700);
}

.toolbar button:hover {
  background: var(--primary-gradient);
  border-color: transparent;
  color: white;
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.3);
}

.toolbar button:active {
  transform: translateY(0) scale(0.98);
}

.toolbar-separator {
  width: 1px;
  height: 24px;
  background: linear-gradient(180deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  margin: 0 8px;
}

/* Tab Content */
.tab-content {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.tab-content:not(.active) {
  display: none;
}

/* Editor Container */
.editor-container {
  display: flex;
  flex: 1;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  border-radius: 0 0 20px 20px;
}

.pane {
  flex: 1;
  overflow: auto;
  min-width: 0;
}

.pane:first-child {
  border-right: 1px solid rgba(255, 255, 255, 0.3);
}

/* Custom Scrollbar */
.pane::-webkit-scrollbar,
.editor-textarea::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.pane::-webkit-scrollbar-track,
.editor-textarea::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
}

.pane::-webkit-scrollbar-thumb,
.editor-textarea::-webkit-scrollbar-thumb {
  background: var(--primary-gradient);
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

.pane::-webkit-scrollbar-thumb:hover,
.editor-textarea::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, #8b9aff, #9d6fd8);
}

.editor-textarea {
  width: 100%;
  height: 100%;
  padding: 24px;
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 15px;
  line-height: 1.7;
  border: none;
  outline: none;
  resize: none;
  background: transparent;
  color: var(--gray-900);
}

.pane:last-child {
  padding: 0;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(15px);
}

.preview-content {
  max-width: none;
  margin: 0;
  padding: 24px 32px;
  line-height: 1.8;
  font-size: 15px;
  color: var(--gray-900);
}

/* Status Bar - Glassmorphism */
.status-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0 0 20px 20px;
  font-size: 12px;
  color: var(--gray-600);
  font-weight: 500;
}

/* Preview Styles - Modern Typography */
.preview-content h1, .preview-content h2, .preview-content h3 {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 16px;
  line-height: 1.3;
}

.preview-content h1 {
  font-size: 2.5em;
  border-bottom: 3px solid;
  border-image: var(--primary-gradient) 1;
  padding-bottom: 12px;
}

.preview-content h2 {
  font-size: 2em;
  border-bottom: 2px solid rgba(102, 126, 234, 0.3);
  padding-bottom: 10px;
}

.preview-content p {
  margin-bottom: 18px;
  line-height: 1.8;
}

.preview-content code {
  padding: 3px 8px;
  margin: 0 2px;
  font-size: 90%;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 6px;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-weight: 500;
}

.preview-content pre {
  padding: 20px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 12px;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.preview-content pre code {
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
}

.preview-content blockquote {
  padding: 16px 20px;
  color: var(--gray-700);
  border-left: 4px solid;
  border-image: var(--primary-gradient) 1;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(8px);
  border-radius: 0 8px 8px 0;
  font-style: italic;
}

.preview-content a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: color var(--transition-speed);
}

.preview-content a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width var(--transition-speed) var(--transition-ease);
}

.preview-content a:hover {
  color: #764ba2;
}

.preview-content a:hover::after {
  width: 100%;
}

.preview-content table {
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: 20px;
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.preview-content table th,
.preview-content table td {
  padding: 12px 16px;
  border: 1px solid rgba(102, 126, 234, 0.2);
}

.preview-content table th {
  font-weight: 600;
  background: var(--primary-gradient);
  color: white;
}

.preview-content table tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.5);
}

/* Modern Dialogs */
.export-dialog,
.batch-dialog,
.find-dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.3s var(--transition-ease);
}

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

.export-dialog.hidden,
.batch-dialog.hidden {
  display: none;
}

.export-dialog-content,
.batch-dialog-content {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  width: 90%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUpFade 0.4s var(--transition-ease);
}

@keyframes slideUpFade {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.export-dialog-header,
.batch-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid rgba(102, 126, 234, 0.2);
  background: var(--primary-gradient);
  border-radius: 20px 20px 0 0;
}

.export-dialog-header h3,
.batch-dialog-header h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: white;
}

.export-dialog-body,
.batch-dialog-body {
  padding: 24px;
}

.export-section,
.batch-section {
  margin-bottom: 20px;
}

.export-section label,
.batch-section label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--gray-700);
  font-size: 14px;
}

.export-section select,
.export-section input,
.batch-section select,
.batch-section input {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid rgba(102, 126, 234, 0.2);
  border-radius: 10px;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(5px);
  transition: all var(--transition-speed) var(--transition-ease);
}

.export-section select:focus,
.export-section input:focus,
.batch-section select:focus,
.batch-section input:focus {
  outline: none;
  border-color: #667eea;
  box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
  background: white;
}

/* Modern Buttons */
.export-dialog-footer,
.batch-dialog-footer {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  padding: 20px 24px;
  border-top: 1px solid rgba(102, 126, 234, 0.2);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  border-radius: 0 0 20px 20px;
}

.export-dialog-footer button,
.batch-dialog-footer button,
.folder-input-group button {
  padding: 10px 24px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition-speed) var(--transition-ease);
  position: relative;
  overflow: hidden;
}

.export-dialog-footer button.primary,
.batch-dialog-footer button.primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.export-dialog-footer button.primary:hover,
.batch-dialog-footer button.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

.export-dialog-footer button:not(.primary),
.batch-dialog-footer button:not(.primary),
.folder-input-group button {
  background: rgba(255, 255, 255, 0.8);
  color: var(--gray-700);
  border: 2px solid rgba(102, 126, 234, 0.2);
}

.export-dialog-footer button:not(.primary):hover,
.batch-dialog-footer button:not(.primary):hover,
.folder-input-group button:hover {
  background: white;
  border-color: #667eea;
  transform: translateY(-2px);
}

/* Find Dialog - Floating Modern */
.find-dialog {
  position: absolute;
  top: 70px;
  right: 24px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  z-index: 1000;
  min-width: 420px;
  padding: 16px;
  animation: slideInRight 0.3s var(--transition-ease);
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.find-dialog.hidden {
  display: none;
}

/* Progress Bars - Modern Gradient */
.progress-bar {
  width: 100%;
  height: 8px;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 12px;
}

.progress-fill {
  height: 100%;
  background: var(--primary-gradient);
  transition: width 0.4s var(--transition-ease);
  width: 0%;
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Auto-save Indicator - Modern */
.auto-save-indicator {
  position: fixed;
  top: 24px;
  right: 24px;
  background: var(--primary-gradient);
  color: white;
  padding: 10px 20px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  z-index: 10000;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
  animation: slideInRight 0.3s ease-out;
  display: flex;
  align-items: center;
  gap: 8px;
}

.auto-save-indicator::before {
  content: '✓';
  display: inline-block;
  width: 18px;
  height: 18px;
  background: white;
  color: #667eea;
  border-radius: 50%;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* Enhanced Statistics - Modern */
.enhanced-stats {
  font-size: 11px;
  color: var(--gray-600);
  padding: 2px 0;
  margin-left: 16px;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
}

/* Line Numbers - Modern */
.line-numbers {
  min-width: 50px;
  padding: 12px 8px;
  background: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
  border-right: 1px solid rgba(102, 126, 234, 0.2);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray-500);
  text-align: right;
  user-select: none;
  overflow: hidden;
}

.line-numbers.hidden {
  display: none;
}

/* Animations & Transitions */
.toolbar button,
.tab,
.new-tab-button,
.export-dialog-footer button,
.batch-dialog-footer button {
  position: relative;
  overflow: hidden;
}

.toolbar button::before,
.tab::before,
.new-tab-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.toolbar button:hover::before,
.tab:hover::before,
.new-tab-button:hover::before {
  width: 200px;
  height: 200px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 8px;
    gap: 8px;
  }

  .export-dialog-content,
  .batch-dialog-content {
    max-width: 95%;
  }

  .find-dialog {
    right: 12px;
    min-width: 320px;
  }
}

/* Hide default elements */
.pane.hidden {
  display: none;
}

.pane.full-width {
  border-right: none;
}