/**
 * ═══════════════════════════════════════════════════════════════════════
 * SKILLS SPHERE VISUALIZATION - COMPONENT STYLESHEET
 * ═══════════════════════════════════════════════════════════════════════
 * 
 * AUTHOR: Mohit Pammu
 * VERSION: 3.0.0
 * LAST UPDATED: December 22, 2024
 * 
 * PURPOSE:
 * Isolated styles for the interactive 3D skills network visualization.
 * Self-contained component designed for modularity and potential reuse.
 * 
 * DEPENDENCIES:
 * - CSS Variables from style-refactored.css (color, spacing, typography)
 * - JavaScript: skills-sphere.js (Three.js rendering, interaction)
 * - Data: skills-sphere-data.js (node/project/credential data)
 * - External: Three.js CDN
 * 
 * BROWSER SUPPORT:
 * - Chrome/Edge 90+, Firefox 88+, Safari 14+ (CSS Grid, Custom Properties)
 * - WebGL 1.0+ required for Three.js rendering
 * 
 * PERFORMANCE NOTES:
 * - GPU-accelerated transforms for smooth animations
 * - Minimal padding (4px) for maximum canvas size
 * - Scrollbar hidden until scroll activity (reduces visual clutter)
 * - Will-change hints for interactive elements
 * 
 * ACCESSIBILITY:
 * - Keyboard navigation support (canvas focus states)
 * - Reduced motion support (prefers-reduced-motion)
 * - High contrast mode support (theme integration)
 * - Semantic HTML with ARIA labels in JavaScript
 * 
 * FILE STRUCTURE:
 * 1. Design Tokens & Dependencies
 * 2. Base Layout (Desktop)
 *    - Section Header
 *    - Container
 *    - Content Grid
 *    - Canvas Wrapper
 *    - Sidebar
 * 3. Panels & Components (Desktop)
 *    - Panel Base Styles
 *    - Legend Panel
 *    - Details Panel
 *    - Projects Section
 *    - Credentials Section
 * 4. Overlays & Labels (Desktop)
 *    - Instructions
 *    - Attribution
 *    - Node Labels
 *    - Center Label (Deprecated)
 * 5. Theme Integration
 *    - Dark Mode Overrides
 *    - Light Mode Overrides
 * 6. Animations & Keyframes
 * 7. Accessibility Features
 * 8. Responsive Breakpoints
 *    - Tablet (992px)
 *    - Mobile Base (768px)
 *    - Mobile Portrait (768px + orientation)
 *    - Mobile Landscape (768px + orientation)
 *    - Small Phones (480px)
 * 
 * ═══════════════════════════════════════════════════════════════════════
 */


/* ═══════════════════════════════════════════════════════════════════
   1. DESIGN TOKENS & DEPENDENCIES
   ═══════════════════════════════════════════════════════════════════
   
   Inherits CSS variables from style-refactored.css:
   - --primary-color: Accent color for interactive elements
   - --text-color, --light-text-color: Typography colors
   - --border-color: Panel borders
   - --spacing-*, --border-radius-*: Layout tokens
   
   ═══════════════════════════════════════════════════════════════════ */


/* ═══════════════════════════════════════════════════════════════════
   2. BASE LAYOUT (DESKTOP)
   ═══════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────
   Section Header
   ───────────────────────────────────────────────────────────────── */

.skills-header {
  text-align: center;
  margin-bottom: 16px;
}

.skills-header h1 {
  font-size: 2rem;
  margin-bottom: 6px;
  color: var(--primary-color, #6d8dfa);
}

.skills-header .subtitle {
  font-size: 0.85rem;
  color: var(--light-text-color, #adb5bd);
  font-style: italic;
}

/* ─────────────────────────────────────────────────────────────────
   Main Container
   ───────────────────────────────────────────────────────────────── */

#skills-sphere-container {
  position: relative;
  width: 100%;
  max-width: 1300px;
  height: clamp(550px, calc(100vh - 220px), 750px);
  margin: 0 auto;
  background:
    radial-gradient(ellipse 180% 60% at top,
      rgba(255, 255, 255, 0.98),
      rgba(250, 251, 255, 0.85) 60%,
      transparent 100%),
    linear-gradient(145deg,
      rgba(250, 251, 255, 0.95),
      rgba(238, 241, 255, 0.90));
  color: #111320;
  border-radius: 24px;
  border: 1.5px solid rgba(100, 120, 200, 0.22);
  box-shadow:
    0 8px 20px -3px rgba(10, 15, 60, 0.15),
    0 3px 8px -1px rgba(99, 102, 241, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.6),
    inset 0 -1px 0 rgba(100, 120, 200, 0.2);
  padding: 20px 20px 16px 20px;
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
  overflow: hidden;
}

/* ─────────────────────────────────────────────────────────────────
   Content Grid
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-content {
  display: grid;
  grid-template-columns: 1fr min(400px, 35vw);
  gap: 20px;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* ─────────────────────────────────────────────────────────────────
   Canvas Wrapper
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-canvas-wrapper {
  position: relative;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  height: 100%;
}

.skills-sphere-canvas-wrapper canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
}

/* ─────────────────────────────────────────────────────────────────
   Sidebar
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  height: 100%;
  width: min(400px, 35vw);
  position: relative;
  overflow: hidden;
}


/* ═══════════════════════════════════════════════════════════════════
   3. PANELS & COMPONENTS (DESKTOP)
   ═══════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────
   Panel Base Styles
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-panel {
  background:
    radial-gradient(ellipse 150% 25% at top,
      rgba(138, 166, 255, 0.18),
      transparent 30%),
    linear-gradient(145deg, #ffffff, #f6f8ff);
  color: #111320;
  border-radius: 12px;
  padding: 18px;
  border: 1.5px solid rgba(109, 141, 250, 0.42);
  box-shadow:
    0 4px 12px -2px rgba(10, 15, 60, 0.15),
    0 2px 6px -1px rgba(99, 102, 241, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 1);
  transition: transform 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
  position: relative;
}

.skills-sphere-panel.details-full-height {
  box-shadow: none;
}

.skills-sphere-panel h3 {
  display: none;
  margin: 0 0 14px 0;
  font-size: 1.125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--light-text-color, #adb5bd);
}

/* ─────────────────────────────────────────────────────────────────
   Legend Panel
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-legend {
  flex-shrink: 0;
  box-shadow:
    0 4px 14px -3px rgba(10, 15, 60, 0.15),
    0 2px 8px -2px rgba(99, 102, 241, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 1);
}

.skills-sphere-legend-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}

.skills-sphere-legend-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  color: var(--text-color, #f8f9fa);
  padding: 8px 8px;
  margin: -2px -8px;
  border-radius: 6px;
  border-left: 3px solid transparent;
  transition: all 0.2s ease;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
}

.skills-sphere-legend-item:hover {
  transform: translateX(1px);
  background: rgba(109, 141, 250, 0.1);
  will-change: transform, background-color;
}

.skills-sphere-legend-item.active {
  background: rgba(109, 141, 250, 0.2);
  border-left: 3px solid var(--primary-color, #6d8dfa);
  padding-left: 11px;
  transform: translateX(0);
}

.skills-sphere-legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px currentColor;
}

/* ─────────────────────────────────────────────────────────────────
   Details Panel
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-details {
  flex-grow: 0;
  flex-shrink: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.skills-sphere-details-content {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-right: 8px;
  padding-bottom: 16px;
  min-height: 0;
}

/* Custom scrollbar - hidden until scroll activity */
.skills-sphere-details-content {
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
  transition: scrollbar-color 0.3s ease;
}

.skills-sphere-details-content::-webkit-scrollbar {
  width: 6px;
}

.skills-sphere-details-content::-webkit-scrollbar-track {
  background: transparent;
  border-radius: 3px;
  transition: background 0.3s ease;
}

.skills-sphere-details-content::-webkit-scrollbar-thumb {
  background: transparent;
  border-radius: 3px;
  transition: background 0.3s ease;
}

.skills-sphere-details-content.scrolling {
  scrollbar-color: rgba(109, 141, 250, 0.4) rgba(255, 255, 255, 0.05);
}

.skills-sphere-details-content.scrolling::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
}

.skills-sphere-details-content.scrolling::-webkit-scrollbar-thumb {
  background: rgba(109, 141, 250, 0.4);
}

.skills-sphere-details-content.scrolling::-webkit-scrollbar-thumb:hover {
  background: rgba(109, 141, 250, 0.6);
}

/* Details - Empty state */
.skills-sphere-details-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 30px 20px;
  color: var(--light-text-color, #adb5bd);
  font-size: 16px;
  line-height: 1.5;
}

/* Details - Header */
.skills-sphere-details-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color, #2d2d2d);
}

.skills-sphere-details-icon {
  font-size: 32px;
  flex-shrink: 0;
}

.skills-sphere-details-title {
  flex: 1;
}

.skills-sphere-details-title h4 {
  margin: 0 0 4px 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-color, #f8f9fa);
}

.skills-sphere-details-subtitle {
  font-size: 14px;
  color: var(--light-text-color, #adb5bd);
  font-style: italic;
}

/* Details - Chips list */
.skills-sphere-details-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.skills-sphere-detail-chip {
  padding: 2px 8px;
  background-color: rgba(109, 141, 250, 0.1);
  border: 1.5px solid rgba(109, 141, 250, 0.3);
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary-color, #6d8dfa);
  transition: all 0.2s ease;
  cursor: default;
}

.skills-sphere-detail-chip:hover {
  will-change: background-color, border-color;
}

/* ─────────────────────────────────────────────────────────────────
   Projects Section
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-details-section {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border-color, #2d2d2d);
}

.skills-sphere-details-section-title {
  margin: 0 0 12px 0;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--light-text-color, #adb5bd);
}

.skills-sphere-projects-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.skills-sphere-project-item {
  padding: 10px 12px;
  background-color: rgba(109, 141, 250, 0.1);
  border: 1.5px solid rgba(109, 141, 250, 0.4);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.skills-sphere-project-item:hover {
  background-color: rgba(109, 141, 250, 0.2);
  border-color: rgba(109, 141, 250, 0.8);
  transform: translateX(4px);
  will-change: transform, background-color, border-color;
}

.skills-sphere-project-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-color, #f8f9fa);
  margin-bottom: 4px;
}

.skills-sphere-project-desc {
  font-size: 0.9rem;
  color: var(--light-text-color, #adb5bd);
  line-height: 1.4;
}

.skills-sphere-project-credentials {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skills-sphere-project-credential-badge {
  font-size: 12px;
  padding: 3px 8px;
  background-color: rgba(109, 141, 250, 0.15);
  border: 1px solid rgba(109, 141, 250, 0.3);
  border-radius: 4px;
  color: var(--primary-color, #6d8dfa);
  font-weight: 500;
}

/* ─────────────────────────────────────────────────────────────────
   Credentials Section
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-credentials-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skills-sphere-credential-item {
  padding: 8px 10px;
  background-color: rgba(34, 197, 94, 0.1);
  border-left: 3px solid rgba(34, 197, 94, 0.6);
  border-radius: 4px;
}

.skills-sphere-credential-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-color, #f8f9fa);
  margin-bottom: 2px;
}

.skills-sphere-credential-desc {
  font-size: 11px;
  color: var(--light-text-color, #adb5bd);
  font-style: italic;
}


/* ═══════════════════════════════════════════════════════════════════
   4. OVERLAYS & LABELS (DESKTOP)
   ═══════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────
   Instructions Overlay
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-instructions {
  position: absolute;
  top: 16px;
  left: 0;
  right: 420px;
  text-align: center;
  font-size: 1.15rem;
  color: var(--light-text-color, #6c757d);
  opacity: 0.85;
  z-index: 10;
  pointer-events: none;
}

.skills-sphere-instructions .desktop-only {
  display: inline;
}

.skills-sphere-instructions .mobile-only {
  display: none;
}

/* ─────────────────────────────────────────────────────────────────
   Attribution Overlay
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-attribution {
  position: absolute;
  bottom: 12px;
  left: 0;
  right: 420px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--light-text-color, #6c757d);
  opacity: 0.5;
  z-index: 10;
  pointer-events: none;
}

/* ─────────────────────────────────────────────────────────────────
   Node Labels
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-node-labels {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

.skills-sphere-node-label {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0;
  background: none;
  border: none;
  border-radius: 0;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-color, #f8f9fa);
  white-space: nowrap;
  transform: translate(-50%, -50%);
  transition: all 0.2s ease;
  pointer-events: none;
  text-shadow:
    0 0 10px rgba(0, 0, 0, 1),
    0 0 6px rgba(0, 0, 0, 0.9),
    0 0 3px rgba(0, 0, 0, 0.8);
}

.node-label-icon {
  display: none;
}

.node-label-text {
  letter-spacing: 0.5px;
}

/* ─────────────────────────────────────────────────────────────────
   Center Label (DEPRECATED)
   ───────────────────────────────────────────────────────────────── */

.skills-sphere-center-label {
  display: none;
}

.skills-sphere-center-label h2 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color, #6d8dfa);
  text-shadow: 0 0 15px rgba(109, 141, 250, 0.4);
  letter-spacing: 1px;
}

.skills-sphere-center-label p {
  display: none;
}

#skills-sphere-container:hover .skills-sphere-center-label {
  opacity: 0.4;
}


/* ═══════════════════════════════════════════════════════════════════
   5. THEME INTEGRATION
   ═══════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────
   Dark Mode Overrides
   ───────────────────────────────────────────────────────────────── */

[data-theme="dark"] #skills-sphere-container {
  background:
    radial-gradient(ellipse 170% 50% at top,
      rgba(255, 255, 255, 0.08),
      transparent 80%),
    linear-gradient(145deg, #05060a, #0a0d1a);
  border: 2px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(255, 255, 255, 0.02),
    0 8px 32px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .skills-sphere-instructions,
[data-theme="dark"] .skills-sphere-attribution {
  color: var(--light-text-color, #adb5bd);
}

[data-theme="dark"] .skills-sphere-panel {
  background:
    radial-gradient(ellipse 130% 30% at top,
      rgba(120, 140, 255, 0.22),
      transparent 35%),
    linear-gradient(145deg, #14161f, #0f1118);
  border: 1.5px solid rgba(109, 141, 250, 0.30);
  box-shadow:
    0 4px 12px -2px rgba(109, 141, 250, 0.10),
    0 2px 6px -1px rgba(0, 0, 0, 0.4),
    0 8px 20px -4px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .skills-sphere-legend-item {
  color: #f8f9fa;
}

[data-theme="dark"] .skills-sphere-legend-item:hover {
  background: rgba(109, 141, 250, 0.08);
}

[data-theme="dark"] .skills-sphere-legend-item.active {
  background: rgba(109, 141, 250, 0.15);
  border-left-color: var(--primary-color);
}

[data-theme="dark"] .skills-sphere-detail-chip:hover {
  background-color: rgba(109, 141, 250, 0.2);
  border-color: rgba(109, 141, 250, 0.4);
}

/* ─────────────────────────────────────────────────────────────────
   Light Mode Overrides
   ───────────────────────────────────────────────────────────────── */

[data-theme="light"] .skills-sphere-panel h3 {
  color: #64748b;
}

[data-theme="light"] .skills-sphere-legend-item {
  color: #1e293b;
}

[data-theme="light"] .skills-sphere-legend-item:hover {
  background: rgba(109, 141, 250, 0.08);
}

[data-theme="light"] .skills-sphere-legend-item.active {
  background: rgba(109, 141, 250, 0.15);
  border-left-color: var(--primary-color);
}

[data-theme="light"] .skills-sphere-details-title h4 {
  color: #1e293b;
}

[data-theme="light"] .skills-sphere-details-subtitle,
[data-theme="light"] .skills-sphere-details-empty {
  color: #64748b;
}

[data-theme="light"] .skills-sphere-project-name,
[data-theme="light"] .skills-sphere-credential-name {
  color: #1e293b;
}

[data-theme="light"] .skills-sphere-project-desc,
[data-theme="light"] .skills-sphere-credential-desc {
  color: #64748b;
}

[data-theme="light"] .skills-sphere-detail-chip {
  background-color: rgba(109, 141, 250, 0.12);
  border-color: rgba(109, 141, 250, 0.3);
  color: #4a6cf7;
}

[data-theme="light"] .skills-sphere-detail-chip:hover {
  background-color: rgba(74, 108, 247, 0.2);
  border-color: rgba(74, 108, 247, 0.4);
}

[data-theme="light"] .skills-sphere-project-item {
  background-color: rgba(109, 141, 250, 0.06);
  border-color: rgba(109, 141, 250, 0.2);
}

[data-theme="light"] .skills-sphere-project-item:hover {
  background-color: rgba(109, 141, 250, 0.12);
  border-color: rgba(109, 141, 250, 0.35);
}

[data-theme="light"] .skills-sphere-project-credential-badge {
  background-color: rgba(109, 141, 250, 0.15);
  border-color: rgba(109, 141, 250, 0.35);
  color: #4a6cf7;
}

[data-theme="light"] .skills-sphere-details-section {
  border-top-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .skills-sphere-details-section-title {
  color: #64748b;
}

[data-theme="light"] .skills-sphere-credential-item {
  background-color: rgba(34, 197, 94, 0.08);
  border-left-color: rgba(34, 197, 94, 0.5);
}

[data-theme="light"] .skills-sphere-node-label {
  color: #1e293b;
  text-shadow:
    0 0 10px rgba(255, 255, 255, 1),
    0 0 6px rgba(255, 255, 255, 0.9),
    0 0 3px rgba(255, 255, 255, 0.8);
}

[data-theme="light"] .skills-sphere-details-content.scrolling {
  scrollbar-color: rgba(74, 108, 247, 0.3) rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .skills-sphere-details-content.scrolling::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .skills-sphere-details-content.scrolling::-webkit-scrollbar-thumb {
  background: rgba(74, 108, 247, 0.3);
}

[data-theme="light"] .skills-sphere-details-content.scrolling::-webkit-scrollbar-thumb:hover {
  background: rgba(74, 108, 247, 0.5);
}


/* ═══════════════════════════════════════════════════════════════════
   6. ANIMATIONS & KEYFRAMES
   ═══════════════════════════════════════════════════════════════════ */

@keyframes fadeInSphere {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

#skills-sphere-container {
  animation: fadeInSphere 0.8s ease-out forwards;
}

@keyframes subtlePulse {
  0%, 100% {
    opacity: 0.7;
  }
  50% {
    opacity: 0.9;
  }
}

.skills-sphere-center-label {
  animation: subtlePulse 4s ease-in-out infinite;
}


/* ═══════════════════════════════════════════════════════════════════
   7. ACCESSIBILITY FEATURES
   ═══════════════════════════════════════════════════════════════════ */

#skills-sphere-container canvas:focus {
  outline: 2px solid var(--primary-color, #6d8dfa);
  outline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
  #skills-sphere-container,
  .skills-sphere-center-label,
  .skills-sphere-detail-chip,
  .skills-sphere-legend-item {
    animation: none !important;
    transition: none !important;
  }
}


/* ═══════════════════════════════════════════════════════════════════
   8. RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────
   Tablet (≤992px)
   ───────────────────────────────────────────────────────────────── */

@media screen and (max-width: 992px) {
  .skills-sphere-content {
    grid-template-columns: 1.5fr 1fr;
    gap: 16px;
  }
  
  .skills-sphere-panel {
    padding: 16px;
  }
  
  .skills-sphere-details-icon {
    font-size: 28px;
  }
}

/* ─────────────────────────────────────────────────────────────────
   Mobile Base (≤768px) - Shared Styles
   ───────────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
  #skills-sphere-container {
    padding: 12px;
  }
  
  .skills-sphere-panel {
    padding: 12px;
  }
}

/* ─────────────────────────────────────────────────────────────────
   Mobile Portrait (≤768px + orientation: portrait)
   ───────────────────────────────────────────────────────────────── */

@media (max-width: 768px) and (orientation: portrait) {
  #skills-sphere-container {
    height: auto;
    min-height: 600px;
  }
  
  .skills-sphere-content {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  
  .skills-sphere-canvas-wrapper {
    width: 100%;
    height: 400px;
    padding: 32px 1px 24px 1px;
    margin-top: 8px;
  }
  
  .skills-sphere-canvas-wrapper canvas {
    transform: scale(1.15);
  }
  
  .skills-sphere-sidebar {
    width: 100%;
    max-height: none;
    margin-top: 36px;
  }
  
  .skills-sphere-instructions {
    font-size: 13px;
    font-weight: 700;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    top: 8px;
    bottom: auto;
    width: auto;
    max-width: 100%;
    text-align: center;
    white-space: nowrap;
  }
  
  .skills-sphere-attribution {
    font-size: 10px;
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    top: 395px;
    bottom: auto;
    width: auto;
    max-width: 90%;
    text-align: center;
    padding: 0 16px;
    white-space: nowrap;
  }
  
  .skills-sphere-details {
    min-height: 200px;
  }
}

/* ─────────────────────────────────────────────────────────────────
   Mobile Landscape (≤768px + orientation: landscape)
   ───────────────────────────────────────────────────────────────── */

@media (max-width: 768px) and (orientation: landscape) {
  /* Container - fix overflow to contain nodes */
  #skills-sphere-container {
    height: clamp(380px, 72vh, 380px) !important;
    min-height: auto;
    max-height: none;
    padding: 10px;
    overflow: hidden;
  }
  
  /* Grid layout - mirror desktop 2-column structure */
  .skills-sphere-content {
    display: grid;
    grid-template-columns: 1fr min(280px, 38vw);
    gap: 12px;
    height: 100%;
    overflow: hidden;
  }
  
  /* Canvas - proper containment like desktop */
  .skills-sphere-canvas-wrapper {
    width: 100%;
    height: 100%;
    padding: 4px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
  }
  
  .skills-sphere-canvas-wrapper canvas {
    display: block;
    max-width: 100%;
    max-height: 100%;
    transform: none;
  }
  
  /* Sidebar - mirror desktop flex structure */
  .skills-sphere-sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: min(280px, 38vw);
    height: 100%;
    overflow: hidden;
  }
  
  /* Legend - compact but readable */
  .skills-sphere-legend {
    flex-shrink: 0;
    padding: 10px;
  }
  
  .skills-sphere-legend-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px 6px;
  }
  
  .skills-sphere-legend-item {
    font-size: 13px;
    padding: 4px 6px;
    margin: 0;
    border-radius: 4px;
    border-left: 2px solid transparent;
    white-space: nowrap;
    overflow: visible;
    text-overflow: clip;
    gap: 6px;
    transition: all 0.2s ease;
  }
  
  .skills-sphere-legend-item:hover {
    transform: translateX(1px);
    background: rgba(109, 141, 250, 0.1);
  }
  
  .skills-sphere-legend-item.active {
    background: rgba(109, 141, 250, 0.2);
    border-left: 2px solid var(--primary-color);
    padding-left: 8px;
    transform: translateX(0);
  }
  
  .skills-sphere-legend-dot {
    width: 8px;
    height: 8px;
    flex-shrink: 0;
  }
  
  /* Details - mirror desktop scroll behavior */
  .skills-sphere-details {
    flex: 1;
    min-height: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 10px;
  }
  
  .skills-sphere-details-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-right: 6px;
    padding-bottom: 8px;
    min-height: 0;
  }
  
  .skills-sphere-details-icon {
    font-size: 24px;
  }
  
  .skills-sphere-details-title h4 {
    font-size: 16px;
  }
  
  .skills-sphere-details-subtitle {
    font-size: 12px;
  }
  
  .skills-sphere-detail-chip {
    font-size: 0.75rem;
    padding: 2px 6px;
  }
  
  .skills-sphere-project-name {
    font-size: 0.8125rem;
  }
  
  .skills-sphere-project-desc {
    font-size: 0.75rem;
  }
  
  .skills-sphere-details-section-title {
    font-size: 0.875rem;
  }
  
  /* Instructions - centered over canvas */
  .skills-sphere-instructions {
    font-size: 14px;
    left: 0;
    right: min(290px, 40vw);
    top: 6px;
    text-align: center;
    font-weight: 600;
  }
  
  /* Attribution - centered over canvas */
  .skills-sphere-attribution {
    font-size: 0.6rem;
    left: 0;
    right: min(290px, 40vw);
    bottom: 6px;
    text-align: center;
  }
}

/* ─────────────────────────────────────────────────────────────────
   Small Phones (≤480px)
   ───────────────────────────────────────────────────────────────── */

@media (max-width: 480px) and (orientation: portrait) {
  .skills-sphere-canvas-wrapper {
    height: 350px;
  }
  
  .skills-sphere-details-title h4 {
    font-size: 1rem;
  }
  
  .skills-sphere-legend-item {
    font-size: 0.875rem;
  }
}

@media (max-width: 480px) and (orientation: landscape) {
  .skills-sphere-canvas-wrapper {
    min-height: 350px;
  }
  
  .skills-sphere-details {
    min-height: 150px;
  }
  
  .skills-sphere-legend-item {
    font-size: 0.75rem;
  }
}