/* CSS Reset and Variables */
:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Color Palette */
  --bg-canvas: #FAF6F3;
  --bg-sidebar: #FFFFFF;
  --text-main: #1A1A1A;
  --text-muted: #767676;
  --text-placeholder: #B3B3B3;
  
  --border-light: #EBEBEB;
  --border-focus: #1A1A1A;
  
  --accent-blue: #2563EB;
  --accent-blue-hover: #1D4ED8;
  --accent-cleanroom: #0ea5e9; /* Cyan Cleanroom color */
  --accent-cleanroom-bg: rgba(14, 165, 233, 0.08);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.08);
  
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-spring: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

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

body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background-color: var(--bg-canvas);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Layout Grid */
.app-container {
  display: grid;
  grid-template-columns: 380px 1fr;
  width: 100vw;
  height: 100vh;
}

/* ==========================================================================
   1. LEFT SIDEBAR STYLE
   ========================================================================== */
.editor-sidebar {
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  height: 100vh;
  z-index: 10;
  box-shadow: 2px 0 20px rgba(0, 0, 0, 0.02);
}

/* Sidebar Header & Language Toggle */
.sidebar-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.lang-toggle-container {
  display: flex;
  background-color: #F3F3F3;
  padding: 3px;
  border-radius: 8px;
}

.lang-btn {
  background: none;
  border: none;
  padding: 6px 12px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn.active {
  background-color: #FFFFFF;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

.editor-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: #F0FDF4;
  padding: 4px 10px;
  border-radius: 20px;
  border: 1px solid #DCFCE7;
}

.dot-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #22C55E;
}

.dot-indicator.pulsing {
  animation: pulse 1.8s infinite alternate;
}

@keyframes pulse {
  0% { transform: scale(0.95); opacity: 0.5; }
  100% { transform: scale(1.2); opacity: 1; }
}

.badge-text {
  font-size: 10px;
  font-weight: 700;
  color: #15803D;
  letter-spacing: 0.05em;
}

/* Sidebar Scroll Input Area */
.editor-scroll-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  scrollbar-width: thin;
}

.editor-scroll-area::-webkit-scrollbar {
  width: 4px;
}

.editor-scroll-area::-webkit-scrollbar-thumb {
  background-color: #E2E2E2;
  border-radius: 4px;
}

/* Input Fields Styles (Hug Layout & Auto Resize Support) */
.form-group {
  margin-bottom: 20px;
}

.field-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.input-wrapper, .textarea-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.input-icon, .input-icon-svg {
  position: absolute;
  left: 12px;
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.input-icon-svg {
  stroke: var(--text-muted);
}

.editor-input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  background-color: #FAFAFA;
  border: 1px solid #E5E5E5;
  border-radius: 8px;
  outline: none;
  transition: all var(--transition-fast);
}

.editor-input[readonly], .editor-textarea[readonly] {
  cursor: default;
  background-color: #F8F9FA;
  border-color: #E5E7EB;
  color: #4B5563;
  user-select: none;
}

.editor-input[readonly]:hover, .editor-textarea[readonly]:hover {
  background-color: #F8F9FA;
  border-color: #E5E7EB;
}

.editor-input[readonly]:focus, .editor-textarea[readonly]:focus {
  border-color: #E5E7EB;
  box-shadow: none;
}

/* Email copy wrapper hover effect */
.email-copy-wrapper:hover .editor-input {
  background-color: #EFF6FF !important;
  border-color: #93C5FD !important;
}

/* LinkedIn wrapper hover effect */
.linkedin-link-wrapper:hover .editor-input {
  background-color: #EFF6FF !important;
  border-color: #93C5FD !important;
}

/* Copy Toast notification (appears above the input field) */
.copy-toast {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  background-color: #1E293B;
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  z-index: 100;
  letter-spacing: 0.01em;
}

.copy-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.editor-input:hover {
  background-color: #F5F5F5;
  border-color: #D6D6D6;
}

.editor-input:focus {
  background-color: #FFFFFF;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

/* Auto-grow Dynamic Hug Textarea styling */
.editor-textarea {
  width: 100%;
  padding: 12px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  font-weight: 400;
  color: var(--text-main);
  background-color: #FAFAFA;
  border: 1px solid #E5E5E5;
  border-radius: 8px;
  outline: none;
  resize: none; 
  overflow-y: hidden;
  transition: height var(--transition-fast) ease-out;
  min-height: 120px;
}

.editor-textarea:hover {
  background-color: #F5F5F5;
  border-color: #D6D6D6;
}

.editor-textarea:focus {
  background-color: #FFFFFF;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.05);
}

.sidebar-divider {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 28px 0;
}

/* ==========================================================================
   LIST VIEW SECTION
   ========================================================================== */
.list-view-section {
  display: flex;
  flex-direction: column;
}

.section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.tab-container {
  display: flex;
  gap: 4px;
  background-color: #F3F3F3;
  padding: 4px;
  border-radius: 8px;
  margin-bottom: 16px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  padding: 8px 0;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.tab-btn.active {
  background-color: #FFFFFF;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

/* Tab Pane Transitions */
.tab-content {
  position: relative;
  min-height: 150px;
}

.tab-pane {
  display: none;
  opacity: 0;
  transform: translateY(6px);
  transition: all var(--transition-normal);
}

.tab-pane.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

/* Project list view style */
.list-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background-color: #FFFFFF;
  border: 1px solid #EBEBEB;
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.list-item:hover {
  border-color: var(--text-main);
  transform: translateX(2px);
  box-shadow: var(--shadow-sm);
}

.item-text {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 90%;
}

.item-arrow {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.list-item:hover .item-arrow {
  color: var(--text-main);
  transform: translateX(1px);
}

/* ==========================================================================
   IDE-STYLE FILE EXPLORER TREE VIEW
   ========================================================================== */
.tree-container {
  width: 100%;
  border-radius: 8px;
  background: transparent;
  font-family: var(--font-sans);
}

.tree-container ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tree-container ul ul {
  margin-left: 10px;
  padding-left: 10px;
  border-left: 1px dashed rgba(0, 0, 0, 0.08); /* Sophisticated explorer vertical line */
  position: relative;
}

.tree-container .tree-item {
  position: relative;
  margin-top: 4px;
}

.tree-container ul ul .tree-item::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 15px;
  width: 10px;
  height: 1px;
  border-top: 1px dashed rgba(0, 0, 0, 0.08); /* Connecting branch line */
}

.tree-label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  color: #374151; /* Dark grey for folder labels */
  font-weight: 600;
  transition: all var(--transition-fast);
  user-select: none;
  height: 32px;
}

.tree-label:hover {
  background-color: #F3F4F6;
  color: var(--accent-blue);
}

/* Override list-item styles specifically inside the tree view */
.tree-container .file-item.list-item {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: 6px 8px;
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: 6px;
  margin-bottom: 0;
  cursor: pointer;
  box-shadow: none;
  transform: none;
  height: 32px;
  gap: 8px;
  width: 100%;
}

.tree-container .file-item.list-item:hover {
  background-color: #F3F4F6;
  border-color: transparent;
  transform: translateX(2px);
  box-shadow: none;
  color: var(--accent-blue);
}

.tree-container .file-item.list-item .item-text {
  font-size: 13px;
  font-weight: 500;
  color: #4B5563; /* Subtle file name color */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.tree-container .file-item.list-item:hover .item-text {
  color: var(--accent-blue);
}

.tree-container .icon {
  width: 15px;
  height: 15px;
  color: #9CA3AF;
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

.tree-label:hover .icon,
.tree-container .file-item.list-item:hover .icon {
  color: var(--accent-blue);
}

.folder-open-icon {
  display: none !important;
}

.folder-closed-icon {
  display: block !important;
}

.tree-toggle:checked ~ .tree-label .folder-open-icon {
  display: block !important;
  color: var(--accent-blue);
}

.tree-toggle:checked ~ .tree-label .folder-closed-icon {
  display: none !important;
}

.tree-toggle {
  display: none;
}

.tree-children-wrapper {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--transition-normal) ease-in-out;
}

.tree-children {
  overflow: hidden;
}

/* State: Open */
.tree-toggle:checked ~ .tree-children-wrapper {
  grid-template-rows: 1fr;
}



/* Skill Tree Item Layout (Name on the left, Compact slider on the right) */
.tree-container .file-item.list-item.skill-tree-item {
  justify-content: flex-start;
  gap: 8px;
}

.skill-mini-slider {
  display: none !important;
}

/* Active skill filter state */
.tree-container .file-item.list-item.skill-tree-item.active .item-text {
  color: var(--accent-blue);
}
.tree-container .file-item.list-item.skill-tree-item.active .icon {
  color: var(--accent-blue);
}


/* ============================================================
   SKILL SLIDER RATING SCALE — Premium interactive design
   ============================================================ */
.skill-slider-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 4px 0 8px;
}

.skill-category {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-category-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #94A3B8;
  padding: 4px 0 2px;
  border-bottom: 1px solid #F1F5F9;
  margin-bottom: 2px;
}

.skill-slider-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skill-slider-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  cursor: default;
}

.skill-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.skill-slider-name {
  font-size: 11.5px;
  font-weight: 500;
  color: #374151;
  line-height: 1.3;
}

.skill-slider-pct {
  font-size: 10px;
  font-weight: 700;
  color: #2563EB;
  background: #EFF6FF;
  border-radius: 4px;
  padding: 1px 5px;
  min-width: 26px;
  text-align: center;
  flex-shrink: 0;
}

/* Track */
.skill-slider-track {
  position: relative;
  height: 6px;
  background: #E9ECF2;
  border-radius: 999px;
  overflow: visible;
}

/* Animated fill bar */
.skill-slider-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%; /* Starts at 0, animated to --target-pct via JS */
  background: linear-gradient(90deg, #3B82F6 0%, #2563EB 60%, #1D4ED8 100%);
  border-radius: 999px;
  transition: width 0.9s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Thumb dot on the fill edge */
.skill-slider-thumb {
  position: absolute;
  top: 50%;
  left: 0%; /* Animated to --target-pct via JS */
  transform: translate(-50%, -50%);
  width: 13px;
  height: 13px;
  background: #FFFFFF;
  border: 2px solid #2563EB;
  border-radius: 50%;
  box-shadow: 0 1px 4px rgba(37, 99, 235, 0.35);
  transition: left 0.9s cubic-bezier(0.25, 1, 0.5, 1);
  z-index: 2;
}

/* Bottom labels */
.skill-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 9.5px;
  color: #B0BAC9;
  font-weight: 500;
  margin-top: 1px;
}

/* Hover effect — subtle highlight on the whole row */
.skill-slider-item:hover .skill-slider-fill {
  filter: brightness(1.08);
}
.skill-slider-item:hover .skill-slider-name {
  color: #1D4ED8;
}
.skill-slider-item:hover .skill-slider-pct {
  background: #DBEAFE;
}

/* Search Skeleton Styles */
.search-skeleton {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #D1D5DB;
}

.search-box-dummy {
  display: flex;
  align-items: center;
  background-color: #F9FAFB;
  border: 1px solid #E5E7EB;
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.search-dummy-icon {
  width: 14px;
  height: 14px;
  color: #9CA3AF;
  margin-right: 8px;
}

.search-dummy-input {
  border: none;
  background: none;
  font-family: var(--font-sans);
  font-size: 12px;
  color: #1A1A1A;
  outline: none;
  width: 100%;
}

.search-dummy-desc {
  font-size: 11px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
  margin-top: 8px;
}

/* ==========================================================================
   2. RIGHT CANVAS STYLE
   ========================================================================== */
.designer-canvas {
  position: relative;
  background-color: var(--bg-canvas);
  height: 100vh;
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  overflow: hidden;
  user-select: none;
}

/* Dot Grid Pattern */
.canvas-grid-bg {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(#DDD8D3 1.5px, transparent 1.5px);
  background-size: 24px 24px;
  z-index: 1;
  pointer-events: none;
}

/* Top Utility Bar */
.canvas-top-bar {
  position: absolute;
  top: 16px;
  left: 16px;
  right: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 5;
  pointer-events: none;
}

.canvas-title, .canvas-zoom-control {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.06);
  padding: 8px 16px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  pointer-events: auto;
}

.canvas-title span {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-main);
}

.canvas-icon {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

.canvas-zoom-control {
  padding: 4px 8px;
  gap: 12px;
}

.zoom-btn {
  background: none;
  border: none;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}

.zoom-btn:hover {
  background-color: #F3F3F3;
  color: var(--text-main);
}

.zoom-icon {
  width: 14px;
  height: 14px;
}

.zoom-percentage {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-main);
  min-width: 32px;
  text-align: center;
}

/* ==========================================================================
   PORTFOLIO DESIGNER SCATTERED CANVAS
   ========================================================================== */
.preview-card-container {
  position: absolute;
  inset: 0;
  z-index: 3;
  overflow: hidden;
}

/* Dimming/Highlight filters across all blocks on canvas */
.preview-card-container.has-active-filter .preview-card,
.preview-card-container.has-active-filter .project-block-card {
  opacity: 0.25;
  filter: grayscale(40%) blur(0.8px);
  transform: scale(0.96) !important;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.02) !important;
}

/* ==========================================================================
   BLOCK 0: MAIN INTRODUCTION CARD
   ========================================================================== */
.preview-card {
  width: 520px;
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 20px;
  padding: 36px;
  box-shadow: 
    0 10px 40px rgba(0, 0, 0, 0.03),
    0 30px 80px rgba(100, 90, 80, 0.05),
    inset 0 0 0 1px rgba(255, 255, 255, 0.5);
  position: absolute;
  cursor: grab;
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.4s ease, 
              opacity 0.4s ease, 
              filter 0.4s ease, 
              left var(--card-pos-transition, 0s) cubic-bezier(0.16, 1, 0.3, 1), 
              top var(--card-pos-transition, 0s) cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateY(0);
}

.preview-card:hover {
  box-shadow: 
    0 20px 45px rgba(0, 0, 0, 0.06),
    0 45px 110px rgba(14, 165, 233, 0.08),
    inset 0 0 0 1px rgba(255, 255, 255, 0.7);
}

.preview-card:active {
  cursor: grabbing;
}

/* Card highlight state on skill filtering */
.preview-card-container.has-active-filter .preview-card.is-highlighted {
  opacity: 1 !important;
  filter: none !important;
  transform: scale(1.03) translateZ(10px) !important;
  box-shadow: 
    0 0 0 2px var(--accent-cleanroom),
    0 20px 50px rgba(14, 165, 233, 0.15);
}

/* Card Window Dots decoration */
.card-dots {
  position: absolute;
  top: 18px;
  right: 18px;
  display: flex;
  gap: 6px;
}

.card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.card-dot.red { background-color: #FF5F56; }
.card-dot.yellow { background-color: #FFBD2E; }
.card-dot.green { background-color: #27C93F; }

/* Chip Icon Decoration */
.card-header-area {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.semiconductor-chip-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1E293B, #0F172A);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.chip-graphic {
  width: 20px;
  height: 20px;
  color: var(--accent-cleanroom);
  filter: drop-shadow(0 0 4px rgba(14, 165, 233, 0.4));
}

.card-badge {
  font-size: 9px;
  font-weight: 700;
  color: #64748B;
  letter-spacing: 0.08em;
  background-color: #F1F5F9;
  padding: 4px 10px;
  border-radius: 6px;
}

/* Main typography inside preview card */
.card-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-name {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.card-role {
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-blue);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.card-intro {
  font-size: 13.5px;
  line-height: 1.7;
  color: #4A4A4A;
  font-weight: 400;
  margin-bottom: 20px;
  word-break: keep-all;
  white-space: pre-line;
}

/* Metadata chip grid */
.card-meta-chips {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 4px;
}

.meta-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-muted);
  background-color: rgba(0, 0, 0, 0.02);
  padding: 6px 12px;
  border-radius: 8px;
  align-self: flex-start;
  transition: all var(--transition-fast);
}

.meta-chip:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--text-main);
}

.chip-icon, .chip-icon-svg {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

.chip-icon-svg {
  stroke: var(--text-muted);
}

/* ==========================================================================
   9 PROJECT BLOCKS (Twitter-style compact blocks, absolute scattered)
   ========================================================================== */
.project-block-card {
  width: 320px;
  background-color: #FFFFFF;
  border: 3px dashed transparent; /* Trello-like dashed transparent border */
  border-radius: 12px;
  padding: 0;
  box-shadow: rgba(99, 99, 99, 0.08) 0px 2px 8px 0px;
  position: absolute;
  cursor: grab;
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.4s ease, 
              border-color 0.3s ease,
              opacity 0.4s ease, 
              filter 0.4s ease, 
              left var(--card-pos-transition, 0s) cubic-bezier(0.16, 1, 0.3, 1), 
              top var(--card-pos-transition, 0s) cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateY(0);
  overflow: hidden;
}

.project-block-card:hover {
  box-shadow: rgba(99, 99, 99, 0.22) 0px 4px 14px 0px;
  border-color: rgba(37, 99, 235, 0.25) !important; /* Brand accent dashed highlight */
}

.project-block-card:active {
  cursor: grabbing;
}

/* Card highlight state on skill filtering */
.preview-card-container.has-active-filter .project-block-card.is-highlighted {
  opacity: 1 !important;
  filter: none !important;
  transform: scale(1.02) translateZ(5px) !important;
  box-shadow: 
    0 0 0 2px var(--accent-blue),
    0 10px 25px rgba(37, 99, 235, 0.15) !important;
  border-color: var(--accent-blue);
}

/* Hide macOS window dots to match clean minimalist design */
.project-block-card .card-dots {
  display: none !important;
}

.project-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 8px 16px;
  border-bottom: none;
  margin-bottom: 0;
}

.project-card-header .header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: visible;
  max-width: 78%;
}

.project-icon-box {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background-color: #F4F4F5;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #71717A;
  flex-shrink: 0;
}

.project-icon-box svg {
  width: 13px;
  height: 13px;
}

.project-card-title {
  font-size: 14px;
  font-weight: 700;
  color: #2E2E2F;
  line-height: 1.4;
  white-space: normal; /* Wrapped title for Trello cards */
  overflow: visible;
  text-overflow: clip;
}

/* Dynamic engineering ID badges displayed in the header */
.project-card-header::after {
  font-size: 10px;
  color: #9CA3AF;
  font-weight: 600;
  font-family: var(--font-mono), monospace;
  background-color: #F3F4F6;
  padding: 3px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}
#proj-card-1 .project-card-header::after { content: "wb_01"; }
#proj-card-2 .project-card-header::after { content: "pkg_01"; }
#proj-card-3 .project-card-header::after { content: "fpga_01"; }
#proj-card-4 .project-card-header::after { content: "euv_01"; }
#proj-card-5 .project-card-header::after { content: "spot_01"; }
#proj-card-6 .project-card-header::after { content: "mcu_01"; }
#proj-card-7 .project-card-header::after { content: "filter_01"; }
#proj-card-8 .project-card-header::after { content: "chrg_01"; }
#proj-card-9 .project-card-header::after { content: "batt_01"; }

/* Convert thumbnail block into a minimalist tags container */
.project-thumbnail {
  width: auto;
  height: auto;
  border-radius: 0;
  position: relative;
  overflow: visible;
  margin: 0 16px 8px 16px;
  border: none;
  background: none !important;
}

/* Hide pattern overlays for flat design */
.thumbnail-chip-pattern,
.thumbnail-gradient-overlay {
  display: none !important;
}

.thumbnail-text-overlay {
  position: static;
  z-index: 2;
  display: flex;
}

.thumbnail-badge {
  font-size: 10px;
  font-weight: 700;
  color: #FFFFFF;
  background-color: var(--accent-blue);
  padding: 3px 10px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  box-shadow: rgba(0, 0, 0, 0.04) 0px 1px 2px 0px;
  text-transform: uppercase;
}

/* Coordinated Category colors for each project */
#proj-card-1 .thumbnail-badge { background-color: #4F46E5; } /* Process Analysis (Indigo) */
#proj-card-2 .thumbnail-badge { background-color: #0F766E; } /* Theory Integration (Teal) */
#proj-card-3 .thumbnail-badge { background-color: #059669; } /* Digital Design (Emerald) */
#proj-card-4 .thumbnail-badge { background-color: #B45309; } /* Lithography (Amber) */
#proj-card-5 .thumbnail-badge { background-color: #0284C7; } /* Big Data & Yield (Sky) */
#proj-card-6 .thumbnail-badge { background-color: #BE185D; } /* MCU System (Pink) */
#proj-card-7 .thumbnail-badge { background-color: #15803D; } /* Analog Circuits (Green) */
#proj-card-8 .thumbnail-badge { background-color: #7C3AED; } /* Power Systems (Violet) */
#proj-card-9 .thumbnail-badge { background-color: #E11D48; } /* Battery Tech (Rose) */

/* Bottom dates and Expand buttons styled as a clean Stats footer */
.project-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px 14px 16px;
  background-color: transparent;
  border-top: 1px solid #F3F4F6;
}

.project-dates {
  display: flex;
  align-items: center;
  flex: 1;
}

/* Hide start/end dates from compact block cards */
.project-dates .date-row:nth-child(1),
.project-dates .date-row:nth-child(2) {
  display: none !important;
}

.project-dates .date-row:nth-child(3) {
  display: flex;
  align-items: center;
  font-size: 11.5px;
  color: #9CA3AF;
  font-weight: 500;
}

.project-dates .date-row:nth-child(3) .date-lbl {
  display: none !important;
}

.project-dates .date-row:nth-child(3) .date-val {
  color: #6B7280;
  font-weight: 600;
}

.project-dates .date-row:nth-child(3) .date-val::before {
  content: "⏱ ";
  margin-right: 2px;
  opacity: 0.8;
}

.expand-btn {
  font-family: var(--font-sans);
  background-color: rgba(37, 99, 235, 0.06);
  border: none;
  color: var(--accent-blue);
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  box-shadow: none;
}

.expand-btn:hover {
  background-color: var(--accent-blue);
  color: #FFFFFF;
  transform: none;
  box-shadow: none;
}

.expand-btn svg {
  width: 12px;
  height: 12px;
}

/* ==========================================================================
   3. FLOATING DESIGN TOOLS (Figma-style)
   ========================================================================== */
.floating-toolbar {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(30, 41, 59, 0.95); /* Sleek charcoal dark mode */
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 6px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  gap: 4px;
  box-shadow: 
    0 10px 30px rgba(0, 0, 0, 0.15),
    0 1px 3px rgba(0, 0, 0, 0.1);
  z-index: 5;
}

.tool-btn {
  background: none;
  border: none;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  cursor: pointer;
  color: #94A3B8;
  transition: all var(--transition-fast);
}

.tool-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: #F8FAFC;
}

.tool-btn.active {
  background-color: #0EA5E9; /* Blue active */
  color: #FFFFFF;
}

.tool-btn.highlight {
  background-color: #10B981; /* Green highlight play btn */
  color: #FFFFFF;
}

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

/* Reset View button: clean single green square icon */
.tool-btn-reset {
  background-color: #10B981;
  color: #FFFFFF;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.tool-btn-reset:hover {
  background-color: #059669;
  transform: scale(1.08);
}

.tool-btn-reset:active {
  transform: scale(0.95);
}

.tool-icon {
  width: 16px;
  height: 16px;
}

.toolbar-divider {
  width: 1px;
  height: 20px;
  background-color: rgba(255, 255, 255, 0.15);
  margin: 0 4px;
}

/* Helper Text bottom left */
.canvas-helper-text {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 0, 0, 0.05);
  padding: 8px 14px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  pointer-events: none;
  z-index: 5;
}

.canvas-helper-text span {
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-muted);
}

.helper-icon {
  width: 14px;
  height: 14px;
  color: var(--accent-blue);
}

/* Interactive Card Scale Pulse */
.card-scale-pulse {
  animation: cardPulse 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes cardPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04) rotate(0.5deg); }
  100% { transform: scale(1); }
}

/* ==========================================================================
   4. NOTION-STYLE SIDE PEEK PANEL (Slides in from the right!)
   ========================================================================== */
.side-peek-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 680px;
  max-width: 90vw;
  height: 100vh;
  background-color: #FFFFFF;
  border-left: 1px solid var(--border-light);
  box-shadow: -10px 0 40px rgba(15, 23, 42, 0.1);
  z-index: 99999 !important;
  transform: translateX(100%) !important;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
  display: flex;
  flex-direction: column;
}

.side-peek-panel.open {
  transform: translateX(0) !important;
}

.side-peek-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.35);
  backdrop-filter: blur(4px);
  z-index: 99998 !important;
  opacity: 0 !important;
  pointer-events: none !important;
  transition: opacity 0.4s ease !important;
}

.side-peek-overlay.open {
  opacity: 1 !important;
  pointer-events: auto !important;
}

.side-peek-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #FAFAFA;
}

.side-peek-body {
  padding: 40px 48px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
}

.side-peek-body::-webkit-scrollbar {
  width: 6px;
}

.side-peek-body::-webkit-scrollbar-thumb {
  background-color: #E2E8F0;
  border-radius: 3px;
}

.side-peek-close-btn {
  background: none;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.side-peek-close-btn:hover {
  background-color: #F1F5F9;
  color: var(--text-main);
}

.side-peek-close-btn svg {
  width: 18px;
  height: 18px;
}

/* Editorial typography spacing */
.newsletter-meta {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.newsletter-title {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 16px;
}

.newsletter-byline {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 28px;
}

.newsletter-author-img {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, #1e293b, #475569);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 9px;
  font-weight: 700;
}

.newsletter-author-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.newsletter-date {
  font-size: 12px;
  color: var(--text-muted);
}

/* Prose layout */
.newsletter-prose {
  font-size: 14.5px;
  line-height: 1.75;
  color: #334155;
}

.newsletter-prose h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-top: 28px;
  margin-bottom: 12px;
  position: relative;
  padding-left: 12px;
}

.newsletter-prose h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background-color: var(--accent-blue);
  border-radius: 2px;
}

.newsletter-prose p {
  margin-bottom: 16px;
  word-break: keep-all;
}

.newsletter-prose ul {
  margin-left: 20px;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.newsletter-prose li {
  margin-bottom: 2px;
}

.newsletter-prose strong {
  color: var(--text-main);
  font-weight: 700;
}

/* Technical wafer insight box */
.technical-insight-box {
  background-color: #F8FAFC;
  border-left: 4px solid var(--accent-cleanroom);
  border-radius: 8px;
  padding: 16px 20px;
  margin: 24px 0;
}

.insight-title {
  font-size: 12px;
  font-weight: 800;
  color: #0369a1;
  text-transform: uppercase;
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.insight-text {
  font-size: 13px;
  line-height: 1.6;
  color: #334155;
  margin: 0 !important;
}

/* ==========================================================================
   JOURNAL / TECHNICAL PROSE CONTENT STYLES (Side Peek Panel Markdown)
   ========================================================================== */

/* Headings */
.journal-h3 {
  font-size: 16px;
  font-weight: 700;
  color: #1A1A1A;
  margin-top: 28px;
  margin-bottom: 10px;
  padding-left: 12px;
  position: relative;
  line-height: 1.4;
}
.journal-h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 3px;
  background-color: #2563EB;
  border-radius: 2px;
}

.journal-h4 {
  font-size: 14px;
  font-weight: 700;
  color: #334155;
  margin-top: 20px;
  margin-bottom: 8px;
  padding-left: 8px;
  border-left: 2px solid #CBD5E1;
}

/* Paragraph */
.journal-p {
  font-size: 14px;
  line-height: 1.8;
  color: #334155;
  margin-bottom: 14px;
  word-break: keep-all;
}

/* Unordered lists */
.journal-ul {
  margin-left: 22px;
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  list-style-type: disc;
}
.journal-ul li {
  font-size: 14px;
  line-height: 1.7;
  color: #334155;
}

/* Horizontal divider */
.journal-divider {
  border: none;
  border-top: 1px solid #E2E8F0;
  margin: 24px 0;
}

/* TABLE — properly styled, won't break! */
.journal-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 13px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 0 0 1px #E2E8F0;
}

.journal-table thead {
  background-color: #F8FAFC;
}

.journal-table th {
  padding: 10px 14px;
  text-align: left;
  font-weight: 700;
  color: #475569;
  font-size: 12px;
  border-bottom: 1px solid #E2E8F0;
  letter-spacing: 0.02em;
}

.journal-table td {
  padding: 10px 14px;
  color: #334155;
  font-size: 13px;
  line-height: 1.6;
  border-bottom: 1px solid #F1F5F9;
  vertical-align: top;
}

.journal-table tr:last-child td {
  border-bottom: none;
}

.journal-table tbody tr:hover {
  background-color: #F8FAFC;
}

/* Code inline */
.journal-prose code {
  font-family: 'Menlo', 'Consolas', monospace;
  font-size: 12px;
  background-color: #F1F5F9;
  padding: 1px 5px;
  border-radius: 4px;
  color: #0F172A;
}

/* ==========================================================================
   5. MINI-MAP (Obsidian Canvas-Minimap inspired style)
   ========================================================================== */
.minimap-container {
  position: absolute;
  bottom: 20px;
  right: 20px;
  width: 200px;
  height: 150px;
  background-color: rgba(30, 30, 30, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  z-index: 100;
  overflow: hidden;
  pointer-events: auto;
  user-select: none;
}

.minimap-cards-layer {
  position: absolute;
  width: 100%;
  height: 100%;
}

.minimap-card-dot {
  position: absolute;
  background-color: rgba(255, 255, 255, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 2px;
}

.minimap-card-dot.intro {
  background-color: rgba(14, 165, 233, 0.4);
  border-color: rgba(14, 165, 233, 0.6);
}

.minimap-viewport {
  position: absolute;
  /* Rectangle frame representing exact visible canvas bounding box */
  border: 1.5px solid #2563EB;
  background-color: rgba(37, 99, 235, 0.15);
  border-radius: 4px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5), inset 0 0 0 1px rgba(0, 0, 0, 0.3);
  transition: none; /* Instant feedback on drag/scroll */
  pointer-events: none;
  transform: none; /* Handled directly via top, left, width, height */
}

/* LaTeX math rendering styling to prevent overflow in tables and text */
.newsletter-prose mjx-container {
  max-width: 100%;
  vertical-align: middle;
  display: inline-block;
  overflow: visible !important; /* Allow descenders and curves to draw fully without clipping */
  padding: 2px 0; /* Vertical breathing room */
}
.newsletter-prose mjx-container[display="true"] {
  display: block !important;
  margin: 16px 0 !important;
  padding: 12px;
  background: #F8FAFC;
  border-radius: 6px;
  border: 1px solid #E2E8F0;
  text-align: center;
  overflow-x: auto; /* Scrollbar only for long standalone display equations */
  overflow-y: visible;
}
.journal-table td mjx-container {
  display: inline-block !important;
  margin: 0 !important;
  padding: 0 !important;
  background: none !important;
  border: none !important;
}

/* Tree Folder Chevron Icons */
.tree-label {
  justify-content: flex-start !important;
  position: relative !important;
  width: 100% !important;
}

.chevron-icon {
  margin-left: auto !important;
  width: 14px !important;
  height: 14px !important;
  color: #9CA3AF !important; /* Elegant gray */
  flex-shrink: 0 !important;
  transition: transform 0.2s ease !important;
}

.open-chevron {
  display: none !important;
}

.closed-chevron {
  display: block !important;
}

.tree-toggle:checked ~ .tree-label .open-chevron {
  display: block !important;
}

.tree-toggle:checked ~ .tree-label .closed-chevron {
  display: none !important;
}

/* Default hidden elements for desktop */
.mobile-menu-toggle {
  display: none;
}

/* ==========================================================================
   6. MOBILE RESPONSIVE AND TOUCH OPTIMIZATIONS
   ========================================================================== */
@media (max-width: 1024px) {
  body {
    overflow-x: hidden !important;
    overflow-y: auto !important;
    height: auto !important;
    min-height: 100vh;
  }

  .app-container {
    grid-template-columns: 1fr !important;
    width: 100vw;
    height: auto !important;
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* Mobile menu toggle button in top bar */
  .mobile-menu-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: var(--text-main);
    margin-right: 8px;
    padding: 6px;
    border-radius: 6px;
    transition: background-color var(--transition-fast);
  }
  .mobile-menu-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
  }
  .mobile-menu-toggle svg {
    width: 20px;
    height: 20px;
  }

  /* Left sidebar drawer mode */
  .editor-sidebar {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 320px;
    max-width: 85vw;
    height: 100vh;
    z-index: 100000 !important;
    transform: translateX(-100%) !important;
    transition: transform var(--transition-normal) !important;
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.1) !important;
  }
  .editor-sidebar.open {
    transform: translateX(0) !important;
  }

  /* Sidebar backdrop overlay */
  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 99999 !important;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal) ease;
  }
  .sidebar-overlay.open {
    opacity: 1;
    pointer-events: auto;
  }

  /* Canvas view stacked in vertical column */
  .designer-canvas {
    width: 100vw !important;
    height: auto !important;
    min-height: 100vh;
    overflow-x: hidden !important;
    overflow-y: visible !important;
    padding: 0 !important;
    user-select: auto !important;
  }

  .canvas-top-bar {
    position: fixed !important;
    top: 16px;
    left: 16px;
    right: 16px;
    z-index: 1000 !important;
    pointer-events: none;
    width: auto !important;
  }

  .preview-card-container {
    position: relative !important;
    inset: auto !important;
    width: 100vw !important;
    height: auto !important;
    min-height: 100vh;
    overflow: visible !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    padding: 85px 16px 40px 16px !important;
    gap: 24px !important;
    z-index: 2;
  }

  /* Absolute to relative stacking */
  .preview-card, 
  .project-block-card {
    position: relative !important;
    left: auto !important;
    top: auto !important;
    transform: none !important;
    margin: 0 !important;
    width: 100% !important;
    max-width: 500px !important;
    box-shadow: var(--shadow-md) !important;
    cursor: default !important;
    transform-style: flat !important;
    transition: box-shadow var(--transition-fast), transform var(--transition-fast) !important;
  }
  
  .preview-card:hover,
  .project-block-card:hover {
    transform: translateY(-2px) !important;
    box-shadow: var(--shadow-lg) !important;
  }

  /* Zoom controls, minimap, helper and toolbar are hidden on mobile */
  .canvas-zoom-control,
  .minimap-container,
  .canvas-helper-text,
  .floating-toolbar {
    display: none !important;
  }
  
  /* Prevent scroll jumping on touch inputs in active filter state */
  .preview-card-container.has-active-filter .preview-card,
  .preview-card-container.has-active-filter .project-block-card {
    transform: scale(0.98) !important;
    filter: none !important; /* simplify rendering on mobile */
  }

  /* Modals and Notion side peek scaling */
  .side-peek-panel {
    width: 100vw !important;
    max-width: 100vw !important;
  }
}
}