/**
 * Focus Effects
 * 
 * This file contains various focus effects for modern UIs.
 * The effects are optimized for performance and consider reduced motion.
 */

@layer components {
    .focus-ring {
        transition: box-shadow 0.2s ease;
    }

    .focus-ring:focus {
        box-shadow: 0 0 0 var(--spacing-1) var(--focus-ring-color, rgb(59 130 246 / 50%));
        outline: none;
    }

    .focus-ring-sm {
        transition: box-shadow 0.2s ease;
    }

    .focus-ring-sm:focus {
        box-shadow: 0 0 0 var(--border-width-thick) var(--focus-ring-color, rgb(59 130 246 / 50%));
        outline: none;
    }

    .focus-ring-lg {
        transition: box-shadow 0.2s ease;
    }

    .focus-ring-lg:focus {
        box-shadow: 0 0 0 var(--spacing-1) var(--focus-ring-color, rgb(59 130 246 / 50%));
        outline: none;
    }

    .focus-outline {
        transition: outline 0.2s ease;
    }

    .focus-outline:focus {
        outline: var(--border-width-thick) solid var(--focus-outline-color, #3b82f6);
        outline-offset: var(--border-width-thick);
    }

    .focus-outline-sm:focus {
        outline-offset: var(--border-width);
        outline-width: var(--border-width);
    }

    .focus-outline-lg:focus {
        outline-offset: var(--spacing-1);
        outline-width: var(--spacing-1);
    }

    .focus-bg {
        transition: background-color 0.2s ease;
    }

    .focus-bg:focus {
        background-color: var(--focus-bg-color, rgb(59 130 246 / 10%));
    }

    .focus-bg-sm:focus {
        background-color: var(--focus-bg-color-sm, rgb(59 130 246 / 5%));
    }

    .focus-bg-lg:focus {
        background-color: var(--focus-bg-color-lg, rgb(59 130 246 / 20%));
    }

    .focus-color-primary {
        --focus-ring-color: var(--focus-primary, rgb(59 130 246 / 50%));
        --focus-outline-color: var(--focus-primary, #3b82f6);
        --focus-bg-color: var(--focus-primary-bg, rgb(59 130 246 / 10%));
    }

    .focus-color-secondary {
        --focus-ring-color: var(--focus-secondary, rgb(107 114 128 / 50%));
        --focus-outline-color: var(--focus-secondary, #6b7280);
        --focus-bg-color: var(--focus-secondary-bg, rgb(107 114 128 / 10%));
    }

    .focus-color-success {
        --focus-ring-color: var(--focus-success, rgb(16 185 129 / 50%));
        --focus-outline-color: var(--focus-success, #10b981);
        --focus-bg-color: var(--focus-success-bg, rgb(16 185 129 / 10%));
    }

    .focus-color-error {
        --focus-ring-color: var(--focus-error, rgb(239 68 68 / 50%));
        --focus-outline-color: var(--focus-error, #ef4444);
        --focus-bg-color: var(--focus-error-bg, rgb(239 68 68 / 10%));
    }

    .focus-color-warning {
        --focus-ring-color: var(--focus-warning, rgb(245 158 11 / 50%));
        --focus-outline-color: var(--focus-warning, #f59e0b);
        --focus-bg-color: var(--focus-warning-bg, rgb(245 158 11 / 10%));
    }

    .focus-color-info {
        --focus-ring-color: var(--focus-info, rgb(6 182 212 / 50%));
        --focus-outline-color: var(--focus-info, #06b6d4);
        --focus-bg-color: var(--focus-info-bg, rgb(6 182 212 / 10%));
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    @layer components {
        .focus-ring,
        .focus-ring-sm,
        .focus-ring-lg,
        .focus-outline,
        .focus-outline-sm,
        .focus-outline-lg,
        .focus-bg,
        .focus-bg-sm,
        .focus-bg-lg {
            transition: var(--transition-none);
        }
    }
}