/* Accessibility Improvements CSS */

/* Enhanced Focus Management */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    transition: outline var(--transition-fast) ease;
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--bg-dark);
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 10001;
    font-weight: 600;
    transition: top var(--transition-fast) ease;
}

.skip-link:focus {
    top: 6px;
    outline: 2px solid var(--bg-dark);
}

/* High Contrast Focus States */
.nav-link:focus,
.btn:focus,
.social-link:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    background: rgba(0, 212, 170, 0.1);
    box-shadow: 0 0 0 1px rgba(0, 212, 170, 0.3);
}

/* Enhanced Button Focus */
.btn:focus {
    transform: translateY(-2px);
    box-shadow: 
        0 0 0 3px rgba(0, 212, 170, 0.3),
        0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Form Focus States */
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.1);
}

/* Improved Text Contrast */
:root {
    /* Enhanced contrast ratios for WCAG AAA compliance */
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0; /* Improved from #b3b3b3 */
    --text-muted: #a0a0a0; /* Improved from #666666 */
    --link-color: #00f5d4; /* Higher contrast primary */
    --link-hover: #00d4aa;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #ffffff;
        --text-secondary: #ffffff;
        --text-muted: #f0f0f0;
        --bg-dark: #000000;
        --bg-darker: #111111;
        --border-color: #555555;
        --primary-color: #00ffcc;
    }

    .btn {
        border: 2px solid currentColor;
    }
    
    .portfolio-overlay {
        background: rgba(0, 0, 0, 0.95);
    }
}

/* 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;
    }

    .hero-bg-animation {
        animation: none;
    }

    .particles-js {
        display: none;
    }

    .loading-screen {
        display: none !important;
    }

    .scroll-progress-bar {
        animation: none;
    }
}

/* 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: 0;
}

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

/* Improved Link States */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: all var(--transition-fast) ease;
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Enhanced Form Labels */
label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: block;
}

/* Error and Success States */
.form-error {
    color: var(--error-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-success {
    color: var(--code-color);
    font-size: 0.9rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Keyboard Navigation Enhancement */
.nav-menu a[tabindex="0"]:focus,
.portfolio-item[tabindex="0"]:focus {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* Color Blind Friendly Indicators */
.status-indicator::after {
    content: "●";
    color: var(--code-color);
    margin-left: 0.5rem;
    font-size: 1.2rem;
}

/* Enhanced Typography for Readability */
body {
    line-height: 1.6;
    font-size: 18px; /* Increased base font size */
}

h1, h2, h3, h4, h5, h6 {
    line-height: 1.3;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.5rem;
    max-width: 70ch; /* Optimal reading width */
}

/* Large Text Support */
@media (min-width: 1200px) {
    body {
        font-size: 20px;
    }
}

/* Touch Target Optimization */
@media (max-width: 768px) {
    .nav-link,
    .btn,
    .social-link,
    .filter-btn,
    .portfolio-btn {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* Loading States Accessibility */
.loading-spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    .loading-spinner {
        animation: none;
        border-top-color: var(--primary-color);
    }
}

/* Custom Focus for Interactive Elements */
.portfolio-item:focus-within {
    outline: 2px solid var(--primary-color);
    outline-offset: 4px;
    transform: translateY(-2px);
}


/* Status Messages */
.status-message {
    padding: 1rem;
    border-radius: var(--radius-normal);
    margin: 1rem 0;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-message.success {
    background: rgba(80, 250, 123, 0.1);
    border: 1px solid var(--code-color);
    color: var(--code-color);
}

.status-message.error {
    background: rgba(255, 85, 85, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.status-message.warning {
    background: rgba(255, 183, 0, 0.1);
    border: 1px solid var(--warning-color);
    color: var(--warning-color);
}