/* ==========================================================================
   Accessibility Improvements for EineCosmetics
   ========================================================================== */

/* Skip Links for Screen Readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--text-primary);
    color: white;
    padding: var(--space-2) var(--space-3);
    z-index: var(--z-tooltip);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
    outline: 2px solid var(--warning-color);
    outline-offset: 2px;
}

/* Enhanced Focus Indicators */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--radius-xs);
}

/* Interactive elements focus */
button:focus,
.btn:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 5px rgba(239, 105, 90, 0.2);
}

/* Keyboard Navigation Enhancements */
.btn:focus,
.feature-card:focus,
.case-study-card:focus {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ARIA Live Regions */
.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;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .hero-title {
        text-shadow: 0 3px 6px rgba(0, 0, 0, 0.8);
    }
    
    .btn {
        border-width: 3px;
        font-weight: 700;
    }
    
    .feature-card,
    .case-study-card {
        border: 2px solid var(--border-color);
    }
    
    .hero-title .highlight {
        background: var(--text-primary);
        color: var(--warning-color);
        padding: 0 var(--space-1);
        border-radius: var(--radius-xs);
    }
}

/* 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,
    .particle-container {
        display: none;
    }
}

/* Screen Reader Improvements */
.hero-stats [data-count] {
    position: relative;
}

.hero-stats [data-count]::after {
    content: attr(aria-label);
    position: absolute;
    left: -9999px;
}

/* Color Blind Friendly Indicators */
.feature-card.featured::before {
    content: '★';
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    color: var(--warning-color);
    font-size: var(--text-lg);
    font-weight: bold;
}

/* Loading States for Accessibility */
.loading {
    position: relative;
}

.loading::after {
    content: '読み込み中...';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.9);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--text-primary);
}

/* Error States */
.error-message {
    background: rgba(252, 129, 129, 0.1);
    border: 1px solid var(--danger);
    color: var(--text-primary);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    margin: var(--space-2) 0;
}

.error-message::before {
    content: '⚠️ ';
    margin-right: var(--space-1);
}

/* Success States */
.success-message {
    background: rgba(72, 187, 120, 0.1);
    border: 1px solid var(--success);
    color: var(--text-primary);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    margin: var(--space-2) 0;
}

.success-message::before {
    content: '✅ ';
    margin-right: var(--space-1);
}

/* Touch Target Improvements */
@media (hover: none) and (pointer: coarse) {
    .btn,
    .tab-btn,
    .feature-detail,
    .news-link {
        min-height: 44px;
        min-width: 44px;
        padding: var(--space-3) var(--space-4);
    }
    
    .hero-cta .btn {
        margin-bottom: var(--space-2);
        width: 100%;
    }
}

/* Print Accessibility */
@media print {
    .skip-link,
    .hero-bg-animation,
    .particle-container {
        display: none !important;
    }
    
    .btn {
        background: white !important;
        color: black !important;
        border: 1px solid black !important;
    }
    
    a::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}