:root {
  --radius: 12px;
  --container: 1100px;
  --gap-size: 1rem;
  --radius-outer: 20px;
  --radius-inner: 12px;
  
  /* Core Background Colors */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #111111;
  --bg-elevated: #171717;
  --bg-card: #1a1a1a;
  --bg-card-hover: #1f1f1f;
  --bg-surface: #262626;
  --bg-muted: #2a2a2a;
  
  /* Engineering Portfolio Colors (keeping for backwards compat) */
  --eng-bg: #000000;
  --eng-card-dark: #0a0a0a;
  --eng-card-light: #262626;
  --eng-text-main: #a1a1a1;
  --eng-text-hover: #fafafa;
  --eng-text-dark: #525252;
  
  /* Text Colors */
  --text-primary: #fafafa;
  --text-secondary: #a1a1a1;
  --text-tertiary: #737373;
  --text-muted: #525252;
  --text-inverted: #000000;

  /* Primary Accent - Supabase Green */
  --accent-primary: #3ecf8e;
  --accent-primary-hover: #4ade94;
  --accent-primary-muted: rgba(62, 207, 142, 0.15);
  --accent-primary-glow: rgba(62, 207, 142, 0.4);
  
  /* Secondary Accent - Cool Blue */
  --accent-secondary: #0ea5e9;
  --accent-secondary-hover: #38bdf8;
  --accent-secondary-muted: rgba(14, 165, 233, 0.15);
  --accent-secondary-glow: rgba(14, 165, 233, 0.4);
  /* Tertiary Accent - Purple */
  --accent-tertiary: #a855f7;
  --accent-tertiary-muted: rgba(168, 85, 247, 0.15);
  
  /* Border Colors - Key for the sleek look */
  --border-default: rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-hover: rgba(255, 255, 255, 0.15);
  --border-active: rgba(255, 255, 255, 0.25);
  --border-strong: rgba(255, 255, 255, 0.35);
  --border-accent: rgba(62, 207, 142, 0.5);
  --border-accent-glow: rgba(62, 207, 142, 0.3);
  
  /* Shadows & Glows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.7);
  --glow-accent: 0 0 20px rgba(62, 207, 142, 0.3);
  --glow-white: 0 0 20px rgba(255, 255, 255, 0.1);
  --glow-card: 0 0 0 1px rgba(255, 255, 255, 0.1);
  
  /* Card Styles */
  --card-bg: linear-gradient(145deg, #1a1a1a 0%, #0f0f0f 100%);
  --card-bg-hover: linear-gradient(145deg, #1f1f1f 0%, #151515 100%);
  --card-border: 1px solid var(--border-default);
  --card-border-hover: 1px solid var(--border-hover);
  
  /* Processor/Circuit-board Decorative Colors */
  --circuit-line: rgba(255, 255, 255, 0.06);
  --circuit-dot: rgba(255, 255, 255, 0.15);
  --circuit-glow: rgba(62, 207, 142, 0.6);
  
  /* Tech Stack Category Colors - Modern palette */
  --tag-lang: #f97316;
  --tag-lang-border: rgba(249, 115, 22, 0.3);
  --tag-lang-bg: rgba(249, 115, 22, 0.1);
  --tag-lang-shadow: rgba(249, 115, 22, 0.4);
  
  --tag-fw: #3b82f6;
  --tag-fw-border: rgba(59, 130, 246, 0.3);
  --tag-fw-bg: rgba(59, 130, 246, 0.1);
  --tag-fw-shadow: rgba(59, 130, 246, 0.4);
  
  --tag-tools: #3ecf8e;
  --tag-tools-border: rgba(62, 207, 142, 0.3);
  --tag-tools-bg: rgba(62, 207, 142, 0.1);
  --tag-tools-shadow: rgba(62, 207, 142, 0.4);
  
  --tag-design: #ec4899;
  --tag-design-border: rgba(236, 72, 153, 0.3);
  --tag-design-bg: rgba(236, 72, 153, 0.1);
  --tag-design-shadow: rgba(236, 72, 153, 0.4);
  
  /* Accent/Link Colors */
  --accent-purple: #a855f7;
  --accent-blue: #3b82f6;
  --accent-orange: #f97316;
  --accent-pink: #ec4899;
  --accent-cyan: #06b6d4;
  
  /* Timeline Colors - Modernized */
  --timeline-line: rgba(255, 255, 255, 0.08);
  --timeline-line-mid: rgba(255, 255, 255, 0.15);
  --timeline-dot: rgba(255, 255, 255, 0.2);
  --timeline-dot-border: rgba(255, 255, 255, 0.3);
  --timeline-accent: rgba(255, 255, 255, 0.9);
  --timeline-glow: rgba(255, 255, 255, 0.18);
  --timeline-active: rgba(255, 255, 255, 0.9);
  --timeline-active-border: rgba(255, 255, 255, 0.75);
  --timeline-hover: #ffffff;
  --timeline-hover-border: rgba(255, 255, 255, 0.8);
  
  /* Legacy Compatibility Mappings */
  --primary: var(--accent-primary);
  --primary-hover: var(--accent-primary-hover);
  --primary-light: var(--accent-primary-muted);
  --primary-medium: var(--accent-primary-muted);
  --primary-shadow: var(--accent-primary-glow);
  --white: #ffffff;
  --white-high: rgba(255, 255, 255, 0.9);
  --white-medium: rgba(255, 255, 255, 0.65);
  --white-low: rgba(255, 255, 255, 0.3);
  --white-subtle: rgba(255, 255, 255, 0.06);
  --black-darker: #000000;
  --black-medium: #0a0a0a;
  --black-lighter: #1a1a1a;
  --black-card: var(--bg-card);
  --black-card-hover: var(--bg-card-hover);
  --black-overlay: rgba(0, 0, 0, 0.9);
  --border-light: var(--border-default);
  --border-medium: var(--border-hover);
  --border-eng: var(--border-default);
  --border-eng-hover: var(--border-hover);
  --border-eng-active: var(--border-active);
  --border-card: var(--border-default);
  --border-card-hover: var(--border-hover);
  --border-card-strong: var(--border-active);
  --bg-overlay-white: rgba(255, 255, 255, 0.1);
  --bg-overlay-eng: rgba(255, 255, 255, 0.05);
  --bg-overlay-eng-medium: rgba(255, 255, 255, 0.15);
  --bg-dark-card: var(--bg-card);
  --bg-dark-card-hover: var(--bg-card-hover);
  --bg-modal: var(--bg-elevated);
  --bg-modal-dark: var(--bg-secondary);
  --brown-light: #404040;
  --brown-dark: #2a2a2a;
  --brown-text: #737373;
  --beige-light: #e5e5e5;
  --gradient-dark-start: rgba(26, 26, 26, 0.97);
  --gradient-dark-end: rgba(10, 10, 10, 0.99);
  --shadow-light: rgba(0, 0, 0, 0.3);
  --shadow-medium: rgba(0, 0, 0, 0.5);
  --shadow-strong: rgba(0, 0, 0, 0.6);
  --shadow-heavy: rgba(0, 0, 0, 0.7);
  --shadow-darker: rgba(0, 0, 0, 0.8);
  
  /* Animation Timing */
  --transition-fast: 150ms ease;
  --transition-medium: 250ms ease;
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  display: block;
}

/* Animation keyframes */
@keyframes slideFromTop {
  from {
    opacity: 0;
    transform: translateY(-80px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideFromBottom {
  from {
    opacity: 0;
    transform: translateY(80px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideFromLeft {
  from {
    opacity: 0;
    transform: translateX(-80px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideFromRight {
  from {
    opacity: 0;
    transform: translateX(80px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideFromTopRight {
  from {
    opacity: 0;
    transform: translate(60px, -60px);
  }
  to {
    opacity: 1;
    transform: translate(0, 0);
  }
}

@keyframes slideFromBottomLeft {
  from {
    opacity: 0;
    transform: translate(-60px, 60px);
  }
  to {
    opacity: 1;
    transform: translate(0, 0);
  }
}

@keyframes slideFromBottomRight {
  from {
    opacity: 0;
    transform: translate(60px, 60px);
  }
  to {
    opacity: 1;
    transform: translate(0, 0);
  }
}