/**
 * Accessibility Styles - Focus Rings
 *
 * Ensures all interactive elements have visible focus indicators
 * that meet WCAG 2.1 AA requirements for accessibility.
 *
 * Requirements:
 * - Focus indicators must be visible (not rely on color alone)
 * - Must have 3:1 contrast ratio against adjacent colors
 * - Must be consistent across all interactive elements
 */

/* ============================================
   GLOBAL FOCUS STYLES
   ============================================ */

/* Base focus style for all interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:not([tabindex="-1"]):focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.25);
}

/* Remove default outline when using focus-visible */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus,
[tabindex]:not([tabindex="-1"]):focus {
    outline: none;
}

/* ============================================
   LINK FOCUS STYLES
   ============================================ */

/* Links within text content */
a:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 2px;
    border-radius: 2px;
}

/* Links styled as buttons should maintain button focus style */
a[class*="btn"]:focus-visible,
a[class*="button"]:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.3);
}

/* ============================================
   BUTTON FOCUS STYLES
   ============================================ */

button:focus-visible,
[type="button"]:focus-visible,
[type="submit"]:focus-visible,
[type="reset"]:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.3);
}

/* Primary/Brand colored buttons need different focus for contrast */
.bg-primary:focus-visible,
[class*="bg-primary"]:focus-visible,
button[class*="bg-primary"]:focus-visible {
    outline: 3px solid #000000;
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.3);
}

/* Dark background buttons */
.bg-gray-900:focus-visible,
.bg-black:focus-visible,
[class*="bg-gray-800"]:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 3px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.4);
}

/* ============================================
   FORM INPUT FOCUS STYLES
   ============================================ */

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 0;
    border-color: #E31B23 !important;
    box-shadow: 0 0 0 3px rgba(227, 27, 35, 0.2);
}

/* Checkbox and radio specific styles */
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.25);
}

/* ============================================
   NAVIGATION FOCUS STYLES
   ============================================ */

/* Header navigation links */
header a:focus-visible,
nav a:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 4px;
    border-radius: 2px;
}

/* Mobile menu items */
.mobile-menu a:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: -3px;
    background-color: rgba(227, 27, 35, 0.1);
}

/* ============================================
   CARD/LINK BLOCK FOCUS STYLES
   ============================================ */

/* Service cards, portfolio items, etc. */
[class*="hover:shadow"]:focus-visible,
[class*="cursor-pointer"]:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.25);
}

/* ============================================
   SKIP LINK (FOR KEYBOARD NAVIGATION)
   ============================================ */

/* Skip to main content link - visible only on focus */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: #E31B23;
    color: white;
    padding: 12px 24px;
    border-radius: 0 0 8px 8px;
    font-weight: 600;
    z-index: 9999;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid #000000;
    outline-offset: 2px;
}

/* ============================================
   HIGH CONTRAST MODE SUPPORT
   ============================================ */

@media (prefers-contrast: high) {
    a:focus-visible,
    button:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    [tabindex]:not([tabindex="-1"]):focus-visible {
        outline: 4px solid #000000;
        outline-offset: 2px;
    }

    .bg-primary:focus-visible,
    [class*="bg-primary"]:focus-visible {
        outline: 4px solid #ffffff;
        outline-offset: 3px;
    }
}

/* ============================================
   REDUCED MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    .skip-link {
        transition: none;
    }
}

/* ============================================
   UTILITY CLASSES FOR CUSTOM FOCUS
   ============================================ */

/* Use when you need to suppress focus ring (e.g., on click) */
.focus\:ring-0:focus {
    outline: none !important;
    box-shadow: none !important;
}

/* Enhanced focus ring utility */
.focus\:ring-enhanced:focus-visible {
    outline: 3px solid #E31B23;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(227, 27, 35, 0.25);
}

/* Focus ring for dark backgrounds */
.focus\:ring-on-dark:focus-visible {
    outline: 3px solid #ffffff;
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.3);
}