/* --- Theme Variable Definitions --- */

/* Obsidian Dark Theme */
.theme-obsidian {
  --bg-primary: #05070c;
  --bg-secondary: #0a0d16;
  --bg-card: rgba(13, 17, 30, 0.65);
  --border-color: rgba(99, 102, 241, 0.08);
  --border-hover: rgba(139, 92, 246, 0.25);
  
  --color-primary: #6366F1; /* Indigo */
  --color-secondary: #a855f7; /* Purple */
  --color-accent: #f43f5e; /* Rose */
  --color-text-main: #f8fafc;
  --color-text-muted: #94a3b8;
  
  --gradient-brand: linear-gradient(135deg, #6366F1 0%, #a855f7 50%, #f43f5e 100%);
  --gradient-glow: linear-gradient(135deg, rgba(99, 102, 241, 0.12) 0%, rgba(168, 85, 247, 0.12) 100%);
  --gradient-card-hover: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
  --shadow-neon: 0 0 25px rgba(99, 102, 241, 0.15), 0 0 50px rgba(168, 85, 247, 0.1);
  --shadow-main: 0 16px 36px rgba(0, 0, 0, 0.5);
  --shadow-inset: inset 0 1px 1px rgba(255, 255, 255, 0.05);
}

/* Pure Light Theme */
.theme-light {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.75);
  --border-color: rgba(99, 102, 241, 0.1);
  --border-hover: rgba(99, 102, 241, 0.25);
  
  --color-primary: #4f46e5; /* Royal Indigo */
  --color-secondary: #7c3aed; /* Royal Violet */
  --color-accent: #e11d48; /* Red Accent */
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  
  --gradient-brand: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  --gradient-glow: linear-gradient(135deg, rgba(79, 70, 229, 0.05) 0%, rgba(124, 58, 237, 0.05) 100%);
  --gradient-card-hover: linear-gradient(135deg, rgba(79, 70, 229, 0.02) 0%, rgba(124, 58, 237, 0.02) 100%);
  --shadow-neon: 0 4px 20px rgba(79, 70, 229, 0.08);
  --shadow-main: 0 12px 30px rgba(0, 0, 0, 0.04);
  --shadow-inset: inset 0 1px 1px rgba(255, 255, 255, 0.8);
}

/* Shopify Emerald Theme */
.theme-emerald {
  --bg-primary: #030705;
  --bg-secondary: #07100b;
  --bg-card: rgba(8, 18, 13, 0.7);
  --border-color: rgba(16, 185, 129, 0.12);
  --border-hover: rgba(6, 182, 212, 0.3);
  
  --color-primary: #10b981; /* Shopify Emerald */
  --color-secondary: #06b6d4; /* Cyan */
  --color-accent: #f59e0b; /* Yellow */
  --color-text-main: #f0fdf4;
  --color-text-muted: #86efac;
  
  --gradient-brand: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);
  --gradient-glow: linear-gradient(135deg, rgba(16, 185, 129, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
  --gradient-card-hover: linear-gradient(135deg, rgba(16, 185, 129, 0.04) 0%, rgba(6, 182, 212, 0.04) 100%);
  --shadow-neon: 0 0 25px rgba(16, 185, 129, 0.2);
  --shadow-main: 0 16px 36px rgba(0, 0, 0, 0.55);
  --shadow-inset: inset 0 1px 1px rgba(255, 255, 255, 0.04);
}

/* Generic layout constants */
:root {
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-code: 'JetBrains Mono', monospace;
  
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- Premium Custom Icon Overrides & Animations --- */
.orbit-icon-node svg {
  width: 22px;
  height: 22px;
  display: block;
  transition: var(--transition-smooth);
}

.spin-slow {
  animation: spin-clockwise 14s linear infinite;
}

@keyframes spin-clockwise {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.shopify-badge-icon-wrapper {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(16, 185, 129, 0.08);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(16, 185, 129, 0.15);
  box-shadow: var(--shadow-inset);
  transition: var(--transition-smooth);
}

.shopify-badge-icon-wrapper svg {
  width: 20px;
  height: 20px;
  display: block;
}

.project-icon-wrapper svg {
  width: 22px;
  height: 22px;
  color: #ffffff;
  stroke-width: 2.25;
  display: block;
}

.social-icon svg {
  width: 18px;
  height: 18px;
  stroke-width: 2;
  transition: var(--transition-smooth);
}

.skill-icon {
  width: 16px;
  height: 16px;
  stroke-width: 2.25;
  transition: var(--transition-smooth);
}

/* Vibrant Skill Icon Color Palettes */
.icon-js { color: #f7df1e; }
.icon-html { color: #e34f26; }
.icon-java { color: #f89820; }
.icon-php { color: #777bb4; }
.icon-sql { color: #00758f; }
.icon-react { color: #61dafb; }
.icon-tailwind { color: #38bdf8; }
.icon-dom { color: #a855f7; }
.icon-responsive { color: #ec4899; }
.icon-node { color: #339933; }
.icon-express { color: #cbd5e1; }
.icon-spring { color: #6db33f; }
.icon-laravel { color: #ff2d20; }
.icon-shopify { color: #95bf47; }
.icon-theme { color: #f59e0b; }
.icon-api { color: #06b6d4; }
.icon-git { color: #f05032; }
.icon-docker { color: #2496ed; }
.icon-aws { color: #ff9900; }
.icon-ai { color: #a855f7; }

.skill-tag:hover .skill-icon {
  transform: scale(1.15);
  filter: drop-shadow(0 0 4px currentColor);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--color-text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  transition: background-color 0.6s cubic-bezier(0.16, 1, 0.3, 1), color 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-x: hidden;
  position: relative;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.2);
  border-radius: 5px;
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.4);
}

/* Interactive Background Particles Canvas */
#bg-particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Typography Gradient Utility */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* --- UI Containers --- */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-main);
  box-shadow: var(--shadow-inset), var(--shadow-main);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
  z-index: 1;
}

.glass-panel:hover {
  border-color: var(--border-hover);
  background-color: rgba(13, 17, 30, 0.75);
}

.theme-light .glass-panel:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

/* --- Header / Navigation --- */
.glass-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(5, 7, 12, 0.6);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.theme-light .glass-header {
  background: rgba(248, 250, 252, 0.7);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.25rem 2rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo-symbol {
  font-size: 1.5rem;
  animation: float 4s infinite ease-in-out;
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 850;
  font-size: 1.35rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  gap: 2.25rem;
  align-items: center;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-muted);
  transition: var(--transition-fast);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  transition: var(--transition-smooth);
}

.nav-link:hover {
  color: var(--color-text-main);
}

.nav-link:hover::after {
  width: 100%;
}

/* Theme Controller */
.theme-controller {
  position: relative;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1.1rem;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--color-text-main);
  font-weight: 600;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.theme-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.75rem;
  width: 190px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-main);
  display: none;
  flex-direction: column;
  padding: 0.5rem;
  z-index: 200;
  opacity: 0;
  transform: translateY(10px);
  transition: var(--transition-smooth);
}

.theme-dropdown.show {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-align: left;
  cursor: pointer;
  transition: var(--transition-fast);
}

.dropdown-item:hover, .dropdown-item.active {
  background-color: rgba(99, 102, 241, 0.08);
  color: var(--color-text-main);
}

.theme-color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(0,0,0,0.2);
}
.theme-color-dot.obsidian { background-color: #6366F1; }
.theme-color-dot.light { background-color: #4f46e5; }
.theme-color-dot.emerald { background-color: #10b981; }

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-main);
  cursor: pointer;
  padding: 0.5rem;
}

/* --- Hero Section --- */
.hero-section {
  padding: 11rem 2rem 6rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: 5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  z-index: 10;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 50px;
  background-color: rgba(99, 102, 241, 0.05);
  border: 1px solid var(--border-color);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  box-shadow: var(--shadow-inset);
}

.hero-title {
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  line-height: 1.1;
  font-weight: 850;
  letter-spacing: -0.03em;
}

.hero-description {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 580px;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.35);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.03);
  color: var(--color-text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

/* Avatar Orbit System */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 5;
}

.avatar-wrapper {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-img-container {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--bg-secondary);
  box-shadow: var(--shadow-neon), var(--shadow-main);
  z-index: 5;
  position: relative;
  transition: var(--transition-smooth);
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.avatar-wrapper:hover .avatar-img-container {
  transform: scale(1.05);
  box-shadow: 0 0 35px rgba(99, 102, 241, 0.35);
}

/* Orbit SVG Container */
.orbit-svg-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 3;
}

.orbit-circle-track {
  fill: none;
  stroke: rgba(99, 102, 241, 0.12);
  stroke-width: 1px;
  stroke-dasharray: 6 6;
  animation: spin 50s linear infinite;
  transform-origin: center;
}

.orbit-circle-track.inner {
  stroke: rgba(168, 85, 247, 0.15);
  animation: spin 30s linear infinite reverse;
}

.orbit-icon-node {
  position: absolute;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-color);
  box-shadow: var(--shadow-inset), 0 4px 12px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  z-index: 6;
  pointer-events: auto;
  transition: var(--transition-smooth);
  animation: float 4s infinite ease-in-out;
}

.orbit-icon-node:hover {
  transform: scale(1.2);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-neon);
}

/* Absolute positions for orbits - calculated in orbit coordinates */
.node-shopify { top: 12%; left: 12%; border-color: rgba(16, 185, 129, 0.3); animation-delay: 0s; }
.node-react { top: 10%; right: 12%; border-color: rgba(6, 182, 212, 0.3); animation-delay: 1s; }
.node-aws { bottom: 12%; left: 12%; border-color: rgba(245, 158, 11, 0.3); animation-delay: 2s; }
.node-liquid { bottom: 10%; right: 12%; border-color: rgba(139, 92, 246, 0.3); animation-delay: 3s; }

/* Floating Badges */
.floating-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1rem;
  z-index: 10;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-main);
  animation: float 5s infinite ease-in-out;
}

.badge-lighthouse {
  top: 60%;
  left: -80px;
  animation-delay: 0.5s;
}

.badge-shopify {
  bottom: 80%;
  right: -50px;
  animation-delay: 1.5s;
}

.badge-dial {
  position: relative;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.badge-dial-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.dial-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 3;
}

.dial-fill {
  fill: none;
  stroke: var(--color-success);
  stroke-width: 3;
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease-in-out;
}

.dial-val {
  position: absolute;
  font-size: 0.65rem;
  font-weight: 850;
  font-family: var(--font-heading);
}

.badge-text h4 {
  font-size: 0.8rem;
  font-weight: 700;
}

.badge-text p {
  font-size: 0.65rem;
  color: var(--color-text-muted);
}

.shopify-icon-placeholder {
  font-size: 1.25rem;
}

/* --- Impact / Statistics Bar --- */
.impact-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
  z-index: 10;
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.impact-card {
  padding: 1.75rem;
  text-align: center;
  transition: var(--transition-smooth);
}

.impact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}

.impact-number {
  font-size: 2.25rem;
  font-weight: 850;
  margin-bottom: 0.4rem;
}

.impact-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Section Formatting --- */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 850;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: clamp(0.9rem, 1.2vw, 1rem);
}

/* --- Skills Section --- */
.skills-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.skill-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover {
  background-color: rgba(255, 255, 255, 0.06);
  color: var(--color-text-main);
  border-color: var(--border-hover);
}

.filter-btn.active {
  background: var(--gradient-brand);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  max-width: 900px;
  margin: 0 auto;
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.6rem 1.25rem;
  border-radius: 50px;
  background-color: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: var(--transition-smooth);
  opacity: 1;
  transform: scale(1);
}

.skill-tag:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-neon);
  transform: translateY(-2px) scale(1.03);
}

.skill-tag.hide {
  display: none;
  opacity: 0;
  transform: scale(0.8);
}

/* --- Experience Timeline Section --- */
.timeline-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.timeline-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.timeline-column {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.column-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 800;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.timeline-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  border-left: 2px solid var(--border-color);
  padding-left: 1.5rem;
  margin-left: 0.5rem;
}

.timeline-item {
  padding: 1.75rem;
  cursor: pointer;
  position: relative;
  transition: var(--transition-smooth);
}

.timeline-item::after {
  content: '';
  position: absolute;
  top: 2rem;
  left: -2.05rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--bg-primary);
  border: 3px solid var(--color-primary);
  transition: var(--transition-smooth);
  z-index: 5;
}

.timeline-item:hover {
  transform: translateX(6px) translateY(-2px);
  box-shadow: var(--shadow-neon);
  border-color: var(--border-hover);
}

.timeline-item:hover::after {
  background-color: var(--color-primary);
  box-shadow: 0 0 10px var(--color-primary);
}

.time-badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  background-color: rgba(99, 102, 241, 0.08);
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: 750;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.item-title {
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
}

.item-company {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
}

.item-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* --- Projects Section --- */
.projects-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.subsection-title-divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.35rem;
  font-weight: 850;
  margin-bottom: 2rem;
  margin-top: 1rem;
}

.brands-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 4rem;
}

.brand-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.brand-img-wrapper {
  position: relative;
  height: 180px;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color);
  background-color: rgba(0,0,0,0.1);
}

.brand-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.brand-card:hover .brand-img {
  transform: scale(1.05);
}

.brand-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex-grow: 1;
}

.brand-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 750;
  text-transform: uppercase;
}

.brand-role {
  color: var(--color-primary);
}

.brand-tech {
  color: var(--color-text-muted);
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
}

.brand-text {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  flex-grow: 1;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 0.5rem;
  transition: var(--transition-fast);
  align-self: flex-start;
}

.brand-link:hover {
  color: var(--color-secondary);
  gap: 0.6rem;
}

/* Custom engineering tools */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
}

.project-card {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.project-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.optimizer-gradient {
  background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.shipsync-gradient {
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
}

.snaplink-gradient {
  background: linear-gradient(135deg, #ec4899, #8b5cf6);
}

.syncshare-gradient {
  background: linear-gradient(135deg, #10b981, #06b6d4);
}

.project-tags {
  display: flex;
  gap: 0.4rem;
}

.p-tag {
  font-size: 0.65rem;
  font-weight: 750;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--color-text-muted);
}

.project-title {
  font-size: 1.35rem;
  font-weight: 850;
}

.project-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid var(--border-color);
  padding-top: 1rem;
  margin-top: 0.5rem;
}

.project-status {
  font-size: 0.75rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px currentColor;
}

.status-indicator.success {
  background-color: var(--color-success);
  color: var(--color-success);
  animation: pulse 2s infinite;
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 750;
  color: var(--color-primary);
  transition: var(--transition-fast);
}

.project-link:hover {
  color: var(--color-secondary);
  gap: 0.6rem;
}

/* --- Live Engineering Playground Section --- */
.playground-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.playground-container {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.playground-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.play-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  color: var(--color-text-muted);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.play-tab-btn:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
  color: var(--color-text-main);
}

.play-tab-btn.active {
  background-color: var(--bg-card);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-neon);
}

.playground-stage {
  padding: 2.5rem;
}

.sim-view {
  display: none;
  flex-direction: column;
  gap: 1.75rem;
}

.sim-view.active {
  display: flex;
  animation: fadeIn 0.4s ease forwards;
}

.sim-intro h4 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
}

.sim-intro p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.sim-action-bar {
  display: flex;
  gap: 1rem;
}

.form-input {
  flex-grow: 1;
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-main);
  transition: var(--transition-fast);
}

.theme-light .form-input {
  background-color: rgba(255, 255, 255, 0.9);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-neon);
}

/* Simulator audit details */
.sim-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.sim-loader.hidden {
  display: none !important;
}

.loading-ring {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(99, 102, 241, 0.1);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.sim-results {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.sim-results.hidden {
  display: none !important;
}

.sim-gauge-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.sim-gauge-card {
  background-color: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.gauge-number {
  font-size: 2.25rem;
  font-weight: 850;
  font-family: var(--font-heading);
}

.gauge-number.orange { color: var(--color-warning); }
.gauge-number.green { color: var(--color-success); }
.gauge-number.red { color: var(--color-danger); }

.gauge-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sim-finding-panel {
  background-color: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.finding-header {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.sim-diff-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.sim-code-column {
  background-color: #05070a;
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.column-tag {
  align-self: flex-start;
  font-size: 0.6rem;
  font-weight: 800;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  text-transform: uppercase;
}

.column-tag.danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: var(--color-danger);
}

.column-tag.success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.sim-code-column pre {
  font-family: var(--font-code);
  font-size: 0.75rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.text-green { color: var(--color-success); }

.sim-impact-footer {
  background: var(--gradient-glow);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(99,102,241,0.1);
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Regression Slider elements */
.sim-slider-container {
  position: relative;
  width: 100%;
  height: 320px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  overflow: hidden;
  user-select: none;
}

.sim-slider-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.sim-slider-img.baseline {
  z-index: 1;
}

.sim-slider-img.current {
  z-index: 2;
  overflow: hidden;
  width: 50%; /* driven dynamically by JS */
}

/* The actual vector visual layouts */
.sim-slider-img svg {
  width: 100%;
  height: 100%;
}

.sim-slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%; /* driven dynamically by JS */
  width: 2px;
  background-color: var(--color-primary);
  z-index: 10;
  cursor: ew-resize;
  box-shadow: 0 0 12px var(--color-primary);
}

.sim-slider-handle-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-primary);
  border: 2px solid var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-main);
  font-size: 0.8rem;
  cursor: ew-resize;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.sim-label-tag {
  position: absolute;
  top: 10px;
  z-index: 15;
  font-size: 0.65rem;
  font-weight: 750;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background-color: rgba(0,0,0,0.7);
  border: 1px solid var(--border-color);
  text-transform: uppercase;
}
.sim-label-tag.left { left: 10px; color: var(--color-info); }
.sim-label-tag.right { right: 10px; color: var(--color-danger); }

/* Simulation Terminal logs */
.sim-terminal {
  background-color: #030407;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1.5rem;
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: #38bdf8;
  line-height: 1.6;
}

.term-prompt { color: #06b6d4; }
.term-info { color: var(--color-text-muted); }
.term-warn { color: var(--color-warning); }
.term-error { color: var(--color-danger); }

/* --- Contact Section --- */
.contact-section {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 10;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 3.5rem;
  max-width: 950px;
  margin: 0 auto;
}

.contact-info {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 850;
}

.contact-info p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.info-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.info-list-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: 0.85rem;
  margin-top: 1rem;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: var(--transition-smooth);
}

.social-icon:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #ffffff;
  transform: translateY(-3px);
  box-shadow: var(--shadow-neon);
}
.theme-obsidian .social-icon:hover, .theme-emerald .social-icon:hover {
  color: #05070c;
}

.contact-form {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-form .form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-form label {
  font-size: 0.75rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 4rem 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  background-color: rgba(5, 7, 12, 0.4);
  position: relative;
  z-index: 10;
}

.theme-light .footer {
  background-color: rgba(255, 255, 255, 0.4);
}

/* --- Interactive Dialog / Modal System --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(5, 7, 12, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-overlay.show {
  display: flex;
  opacity: 1;
}

.modal-content {
  width: 90%;
  max-width: 550px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-main);
  padding: 2.25rem;
  position: relative;
  transform: translateY(20px) scale(0.95);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1010;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.modal-overlay.show .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1.5rem;
  line-height: 1;
  padding: 0.25rem;
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-text-main);
}

.modal-body {
  font-size: 0.9rem;
  color: var(--color-text-main);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-height: 60vh;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.modal-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.modal-tech-badge {
  font-size: 0.7rem;
  font-weight: 750;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  background-color: rgba(99, 102, 241, 0.08);
  border: 1px solid var(--border-color);
  color: var(--color-primary);
}

/* --- Toast Notification System --- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast-item {
  background-color: var(--bg-secondary);
  border: 1.5px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 1rem 1.5rem;
  box-shadow: var(--shadow-main);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 280px;
  pointer-events: auto;
  animation: toastSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  transition: var(--transition-smooth);
}

.toast-item.hide {
  animation: toastSlideOut 0.3s ease forwards;
}

.toast-item.success {
  border-color: var(--color-success);
}

.toast-icon {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
}

.toast-icon.success { color: var(--color-success); }

.toast-message {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text-main);
}

/* --- Scroll Reveal Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Keyframe Animations --- */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
  70% { transform: scale(1.05); box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(50px) translateY(0); }
  to { opacity: 1; transform: translateX(0) translateY(0); }
}

@keyframes toastSlideOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* --- Mobile / Responsive --- */
@media (max-width: 1024px) {
  .hero-section {
    padding: 9rem 2rem 5rem;
  }
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 4rem;
  }
  .hero-badge {
    align-self: center;
  }
  .hero-description {
    max-width: none;
    margin: 0 auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-visual {
    order: -1;
  }
  .impact-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
  .timeline-container {
    grid-template-columns: 1fr;
    gap: 4rem;
  }
  .brands-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .projects-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1.5px solid var(--border-color);
    padding: 1.5rem 2rem;
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
    z-index: 99;
    box-shadow: var(--shadow-main);
  }
  .nav-menu.mobile-show {
    display: flex;
    animation: fadeIn 0.3s ease forwards;
  }
  .mobile-toggle {
    display: block;
  }
  .hero-title {
    font-size: 2.5rem;
  }
  .impact-grid {
    grid-template-columns: 1fr;
  }
  .brands-grid {
    grid-template-columns: 1fr;
  }
  .sim-action-bar {
    flex-direction: column;
  }
  .sim-diff-box {
    grid-template-columns: 1fr;
  }
  .playground-stage {
    padding: 1.5rem;
  }
  .contact-form, .contact-info {
    padding: 2rem;
  }
  .contact-form div[style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }
  .badge-lighthouse {
    left: -40px;
  }
  .badge-shopify {
    right: -20px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .avatar-wrapper {
    width: 260px;
    height: 260px;
  }
  .avatar-img-container {
    width: 160px;
    height: 160px;
  }
  .orbit-icon-node {
    width: 36px;
    height: 36px;
    font-size: 0.95rem;
  }
  .badge-lighthouse {
    left: -20px;
    top: 65%;
  }
  .badge-shopify {
    right: -10px;
    bottom: 75%;
  }
  .btn {
    width: 100%;
  }
  .hero-actions {
    flex-direction: column;
    gap: 0.75rem;
  }
  .playground-tabs {
    flex-direction: column;
    gap: 0.5rem;
  }
  .toast-item {
    min-width: 0;
    width: calc(100vw - 48px);
  }
}