/* ============================================================
   CSS Custom Properties (Design Tokens)
   Used by all other stylesheets
   ============================================================ */

:root {
    /* Colors - Dark Theme (Primary) */
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-elevated: #1c2128;
    --bg-input: #0d1117;
    --bg-hover: rgba(136, 153, 168, 0.08);
    --bg-active: rgba(136, 153, 168, 0.12);

    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-tertiary: #6e7681;
    --text-link: #58a6ff;
    --text-inverse: #0d1117;

    --border-default: #30363d;
    --border-muted: #21262d;
    --border-subtle: rgba(240, 246, 252, 0.1);

    /* Accent Colors */
    --accent-primary: #7c5cff;
    --accent-primary-hover: #6a4ce0;
    --accent-secondary: #58a6ff;
    --accent-gradient: linear-gradient(135deg, #7c5cff 0%, #58a6ff 100%);

    /* Status Colors */
    --status-online: #3fb950;
    --status-busy: #d29922;
    --status-offline: #f85149;
    --status-connecting: #d29922;

    /* Semantic Colors */
    --success: #3fb950;
    --success-bg: rgba(63, 185, 80, 0.1);
    --warning: #d29922;
    --warning-bg: rgba(210, 153, 34, 0.1);
    --error: #f85149;
    --error-bg: rgba(248, 81, 73, 0.1);
    --info: #58a6ff;
    --info-bg: rgba(88, 166, 255, 0.1);

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

    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.8125rem;   /* 13px */
    --text-base: 0.875rem;  /* 14px */
    --text-md: 1rem;        /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 2rem;       /* 32px */

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

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

    /* 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 */

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(124, 92, 255, 0.15);

    /* Transitions */
    --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-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 56px;
    --status-bar-height: 36px;
    --input-height: 44px;
    --quickaction-height: 48px;

    /* Z-Index Scale */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal-backdrop: 300;
    --z-modal: 400;
    --z-tooltip: 500;
    --z-banner: 600;
}