/* Design System - Dark Theme Only */
:root {
  /* Colors - Grayscale (blue-tinted darks) */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #12121a;
  --color-bg-tertiary: #16161f;
  --color-bg-elevated: #1e1e2e;

  --color-text-primary: #e4e4ef;
  --color-text-secondary: #a0a0b4;
  --color-text-tertiary: #6e6e82;
  --color-text-inverse: #0a0a0f;

  --color-border-default: #1e1e2e;
  --color-border-subtle: #16161f;
  --color-border-strong: #2a2a3a;

  /* Colors - Semantic */
  --color-success: #22c55e;
  --color-success-bg: #14532d;
  --color-warning: #eab308;
  --color-warning-bg: #422006;
  --color-error: #ef4444;
  --color-error-bg: #450a0a;
  --color-info: #3b82f6;
  --color-info-bg: #172554;

  /* Colors - Status */
  --color-status-running: #22c55e;
  --color-status-idle: #64748b;
  --color-status-error: #ef4444;
  --color-status-stopped: #525252;

  /* Colors - Accent (warm orange brand) */
  --color-accent-primary: #c2682e;
  --color-accent-primary-hover: #e07a3a;
  --color-accent-glow: rgba(224, 122, 58, 0.15);
  --color-accent-secondary: #f5a623;
  --color-accent-tertiary: #e07a3a;

  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */

  --line-tight: 1.25;
  --line-normal: 1.5;
  --line-relaxed: 1.75;

  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Border Radius */
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;     /* 8px */
  --radius-xl: 0.75rem;    /* 12px */
  --radius-2xl: 1rem;      /* 16px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -4px rgba(0, 0, 0, 0.6);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 8px 10px -6px rgba(0, 0, 0, 0.7);

  /* Motion */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 350ms;
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-base: 0;
  --z-elevated: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

/* Global Resets */
*, *::before, *::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--line-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

/* Focus Management */
:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

/* Links */
a {
  color: var(--color-accent-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

a:hover {
  color: var(--color-accent-primary-hover);
}

/* Buttons */
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Lists */
ul, ol {
  list-style: none;
}

/* Images */
img, svg {
  display: block;
  max-width: 100%;
}

/* Code */
code, pre {
  font-family: var(--font-mono);
}