:root {
    /* Light Theme - Clean white background */
    --background: 0 0% 100%; /* Pure white */
    --foreground: 222 47% 11%; /* Dark blue-gray text */
    --card: 0 0% 98%; /* Slightly off-white */
    --card-foreground: 222 47% 11%;
    --popover: 0 0% 100%;
    --popover-foreground: 222 47% 11%;
    --primary: 217 91% 60%; /* Blue */
    --primary-foreground: 0 0% 100%;
    --secondary: 214 32% 91%; /* Light gray */
    --secondary-foreground: 222 47% 11%;
    --muted: 214 32% 91%;
    --muted-foreground: 215 16% 47%;
    --accent: 214 32% 91%;
    --accent-foreground: 222 47% 11%;
    --destructive: 0 84% 60%;
    --destructive-foreground: 0 0% 98%;
    --border: 214 32% 91%;
    --input: 0 0% 100%;
    --ring: 217 91% 60%;
    --radius: 0.5rem;
    --chart-1: 217 91% 60%;
    --chart-2: 142 76% 36%;
    --chart-3: 47 96% 53%;
    --chart-4: 280 83% 57%;
    --chart-5: 27 87% 67%;

    /* ============================================ */
    /* SENTIENT BRIDGE VARIABLES                   */
    /* For Sheet, Docs, Slides theme support       */
    /* ============================================ */

    /* Backgrounds */
    --sentient-bg-primary: #ffffff;
    --sentient-bg-secondary: #fafafa;
    --sentient-bg-tertiary: #f5f5f5;
    --sentient-bg-hover: rgba(59, 130, 246, 0.08);
    --sentient-bg-active: rgba(59, 130, 246, 0.15);

    /* Text */
    --sentient-text-primary: #1e293b;
    --sentient-text-secondary: #64748b;
    --sentient-text-tertiary: #94a3b8;
    --sentient-text-muted: #cbd5e1;

    /* Accent Colors */
    --sentient-accent: #3b82f6;
    --sentient-accent-hover: #2563eb;
    --sentient-accent-light: rgba(59, 130, 246, 0.1);
    --sentient-accent-dark: #1d4ed8;

    /* Borders */
    --sentient-border: #e2e8f0;
    --sentient-border-light: #f1f5f9;
    --sentient-border-accent: rgba(59, 130, 246, 0.3);

    /* Surfaces */
    --sentient-surface: #fafafa;
    --sentient-surface-hover: #f1f5f9;
    --sentient-surface-active: #e2e8f0;
    --sentient-surface-elevated: #ffffff;

    /* Inputs */
    --sentient-input-bg: #ffffff;
    --sentient-input-border: #e2e8f0;
    --sentient-input-focus: #3b82f6;

    /* Status Colors */
    --sentient-success: #22c55e;
    --sentient-success-bg: rgba(34, 197, 94, 0.15);
    --sentient-warning: #f59e0b;
    --sentient-warning-bg: rgba(245, 158, 11, 0.15);
    --sentient-error: #ef4444;
    --sentient-error-bg: rgba(239, 68, 68, 0.15);

    /* Typography */
    --sentient-font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    /* Shadows */
    --sentient-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --sentient-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sentient-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Border Radius */
    --sentient-radius: 0.5rem;
    --sentient-radius-sm: 0.25rem;
    --sentient-radius-md: 0.5rem;
    --sentient-radius-lg: 0.75rem;
    --sentient-radius-xl: 1rem;
}