/* ============================================
   ACCESSIBILITY IMPROVEMENTS - WCAG 2.1 AA
   ============================================ */

/* ===== FOCUS INDICATORS ===== */

/* Remove default outline only when focus-visible is supported */
*:focus:not(:focus-visible) {
    outline: none;
}

/* Modern focus indicators - visible only with keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 3px solid #6366f1;
    outline-offset: 2px;
    transition: outline 0.2s ease, box-shadow 0.2s ease;
}

/* Enhanced focus for interactive cards */
.guide-card:focus-visible,
.deal-card:focus-visible,
.offer-card:focus-visible,
.hero-service-card:focus-visible {
    outline: 3px solid #6366f1;
    outline-offset: 4px;
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(99, 102, 241, 0.4);
}

/* Focus for links within text content */
.guide-content a:focus-visible,
.hero-content a:focus-visible,
.offer-description a:focus-visible {
    outline: 2px solid #f59e0b;
    outline-offset: 2px;
    background-color: rgba(245, 158, 11, 0.1);
    border-radius: 2px;
}

/* Focus for navigation links */
.nav-link:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 4px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

/* Focus for buttons with different styles */
.cta-button:focus-visible,
.deal-btn:focus-visible,
.offer-cta:focus-visible,
.hero-service-button:focus-visible {
    outline: 3px solid #f59e0b;
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.2);
}

/* Focus for hamburger menu */
.hamburger:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 4px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

/* Focus for form elements */
input[type="text"]:focus-visible,
input[type="email"]:focus-visible,
input[type="date"]:focus-visible,
input[type="number"]:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid #6366f1;
    outline-offset: 0;
    border-color: #6366f1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ===== SCREEN READER ONLY CONTENT ===== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.sr-only-focusable:focus,
.sr-only-focusable:active {
    position: static;
    width: auto;
    height: auto;
    overflow: visible;
    clip: auto;
    white-space: normal;
}

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

@media (prefers-contrast: high) {
    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
        outline: 4px solid currentColor;
        outline-offset: 2px;
    }
}

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

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ===== FOCUS TRAP UTILITIES ===== */

.focus-trap-active {
    position: relative;
}

/* Ensure modal overlay doesn't interfere with focus */
[role="dialog"]:focus {
    outline: none;
}

/* ===== KEYBOARD NAVIGATION HELPERS ===== */

/* Show focus ring only for keyboard users */
body:not(.user-is-tabbing) *:focus {
    outline: none;
}

/* Visual indicator for active keyboard navigation */
body.user-is-tabbing {
    --focus-color: #6366f1;
}

/* ===== ARIA LIVE REGIONS ===== */

[aria-live="polite"],
[aria-live="assertive"] {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* ===== IMPROVED CONTRAST FOR DISABLED STATES ===== */

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

button:disabled:focus-visible,
input:disabled:focus-visible {
    outline: 2px solid #94a3b8;
    outline-offset: 2px;
}