/**
 * Language Selector Component CSS
 * Self-contained styling for the language selector component
 * 
 * Dependencies:
 * - CSS Custom Properties (automatically defined)
 * 
 * Usage:
 * <link rel="stylesheet" href="/static/CSS/language-selector.css">
 */

/* ================================
   CSS Custom Properties / Variables
   ================================ */
.language-selector {
    /* Component-specific variables */
    --language-selector-min-width: 120px;
    --language-selector-padding: 0.5rem 2.25rem 0.5rem 0.75rem;
    --language-selector-font-size: 0.875rem;
    --language-selector-border-radius: 0.5rem;
    --language-selector-transition: all 0.2s ease-in-out;
    --language-selector-z-index: 1;
    
    /* Fallback CSS variables if not defined globally */
    --text-primary: var(--text-primary, #1f2937);
    --text-secondary: var(--text-secondary, #6b7280);
    --surface-elevated: var(--surface-elevated, #ffffff);
    --surface-overlay: var(--surface-overlay, #f9fafb);
    --border-light: var(--border-light, #e5e7eb);
    --border-default: var(--border-default, #d1d5db);
    --primary-300: var(--primary-300, #93c5fd);
    --primary-400: var(--primary-400, #60a5fa);
    --primary-500: var(--primary-500, #3b82f6);
    --primary: var(--primary, #4A90E2);
    
    /* Dark theme fallbacks */
    --surface-elevated-dark: var(--surface-elevated-dark, #374151);
    --border-default-dark: var(--border-default-dark, #4b5563);
    --text-primary-dark: var(--text-primary-dark, #f9fafb);
    
    /* Enhanced compatibility variables */
    --language-selector-margin: 0 0.5rem;
    --language-selector-border-color: var(--border-color, #d1d5db);
    --language-selector-hover-border-color: var(--primary, #4A90E2);
    --language-selector-focus-ring-color: rgba(74, 144, 226, 0.3);
    --language-selector-bg-color: var(--card-bg, #ffffff);
    --language-selector-text-color: var(--text-primary, #1f2937);
    --language-selector-disabled-opacity: 0.6;
    
    /* Enhanced design variables */
    --language-selector-font-weight: 500;
    --language-selector-line-height: 1.5;
    --language-selector-box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --language-selector-hover-box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --language-selector-focus-box-shadow: 0 0 0 3px var(--language-selector-focus-ring-color);
}

/* ================================
   Language Selector Component
   ================================ */
.language-selector {
    position: relative;
    display: inline-block;
    min-width: var(--language-selector-min-width);
    margin: var(--language-selector-margin);
}

.language-selector__label {
    /* Screen reader only label */
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.language-selector__select {
    /* Reset browser styling */
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    
    /* Layout */
    width: 100%;
    padding: var(--language-selector-padding);
    min-height: 2.5rem;
    
    /* Typography */
    font-size: var(--language-selector-font-size);
    font-weight: var(--language-selector-font-weight);
    font-family: inherit;
    line-height: var(--language-selector-line-height);
    color: var(--language-selector-text-color);
    
    /* Visual design */
    background-color: var(--language-selector-bg-color);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem 1rem;
    border: 1px solid var(--language-selector-border-color);
    border-radius: var(--language-selector-border-radius);
    
    /* Effects */
    box-shadow: var(--language-selector-box-shadow);
    transition: var(--language-selector-transition);
    cursor: pointer;
    outline: none;
    
    /* Enhanced flag and text spacing */
    padding-right: 2.5rem; /* More space for flags */
    text-align: left;
    
    /* Better text rendering */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ================================
   Interactive States
   ================================ */
.language-selector__select:hover {
    border-color: var(--language-selector-hover-border-color);
    box-shadow: var(--language-selector-hover-box-shadow);
    transform: translateY(-1px);
}

.language-selector__select:focus {
    border-color: var(--language-selector-hover-border-color);
    box-shadow: var(--language-selector-focus-box-shadow);
    transform: none;
}

.language-selector__select:active {
    transform: translateY(0);
}

.language-selector__select:disabled {
    opacity: var(--language-selector-disabled-opacity);
    cursor: not-allowed;
    transform: none;
}

.language-selector__select:disabled:hover {
    border-color: var(--border-light);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    transform: none;
}

/* ================================
   Dark Theme Support
   ================================ */
[data-theme="dark"] .language-selector__select {
    background-color: var(--surface-elevated-dark);
    border-color: var(--border-default-dark);
    color: var(--text-primary-dark);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

[data-theme="dark"] .language-selector__select:hover {
    border-color: var(--primary-400);
    background-color: var(--surface-overlay, #4b5563);
}

[data-theme="dark"] .language-selector__select:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.2);
}

/* ================================
   Option Styling
   ================================ */
.language-selector__select option {
    padding: 0.5rem 0.75rem;
    font-weight: var(--language-selector-font-weight);
    color: var(--language-selector-text-color);
}

[data-theme="dark"] .language-selector__select option {
    background-color: var(--surface-elevated-dark);
    color: var(--text-primary-dark);
}

/* ================================
   Loading State
   ================================ */
.language-selector.loading .language-selector__select {
    opacity: 0.7;
    cursor: wait;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='3'%3E%3C/circle%3E%3Cpath d='M12 1v6m0 6v6m11-7h-6m-6 0H1'%3E%3C/path%3E%3C/svg%3E");
    animation: languageSelectorSpin 1s linear infinite;
}

@keyframes languageSelectorSpin {
    from { background-position: right 0.75rem center, center; }
    to { background-position: right 0.75rem center, center; }
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 768px) {
    .language-selector {
        min-width: 100px;
        margin: 0 0.5rem;
    }
    
    .language-selector__select {
        padding: 0.375rem 2rem 0.375rem 0.625rem;
        font-size: 0.8125rem;
        min-height: 2.25rem;
    }
}

@media (max-width: 480px) {
    .language-selector {
        min-width: 90px;
        margin: 0 0.25rem;
    }
    
    .language-selector__select {
        padding: 0.25rem 1.75rem 0.25rem 0.5rem;
        font-size: 0.75rem;
        min-height: 2rem;
        background-size: 0.875rem 0.875rem;
        background-position: right 0.5rem center;
    }
}

/* ================================
   Accessibility & Reduced Motion
   ================================ */

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    .language-selector__select {
        transition: none;
    }
    
    .language-selector__select:hover {
        transform: none;
    }
    
    .language-selector.loading .language-selector__select {
        animation: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .language-selector__select {
        border-width: 2px;
        border-color: var(--text-primary);
    }
    
    .language-selector__select:focus {
        border-color: var(--primary);
        box-shadow: 0 0 0 2px var(--primary);
    }
}

/* Focus visible for keyboard navigation */
.language-selector__select:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ================================
   Print Styles
   ================================ */
@media print {
    .language-selector {
        display: none;
    }
}

/* ================================
   Page-specific Enhancements
   ================================ */

/* Chat page specific styling */
.has-sidebar .language-selector {
    margin-right: 1rem;
}

/* Profile page specific styling */
.profile-container .language-selector {
    margin-right: 0.75rem;
}

/* Contact page specific styling */
.contact-grid .language-selector {
    margin-right: 1rem;
}

/* ================================
   Enhanced Page-specific Compatibility
   ================================ */

/* Subscriptions page specific styling */
.subscription-page .language-selector__select,
.page-content .language-selector__select {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 2.5rem 0.5rem 1rem;
}

.subscription-page .language-selector__select:hover,
.page-content .language-selector__select:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: var(--primary-400, #60a5fa);
}

.subscription-page .language-selector__select:focus,
.page-content .language-selector__select:focus {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: var(--primary-400, #60a5fa);
    box-shadow: 0 0 0 2px rgba(96, 165, 250, 0.3);
}

.subscription-page .language-selector__select option,
.page-content .language-selector__select option {
    background-color: var(--surface-elevated, #ffffff);
    color: var(--text-primary, #1f2937);
}

/* Enhanced flag emoji rendering */
.language-selector__select option {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Color Emoji", sans-serif;
    font-variant-emoji: text;
}

/* Ensure consistent flag display across browsers */
.language-selector__select {
    font-feature-settings: "liga" 1, "kern" 1;
    text-rendering: optimizeLegibility;
}

/* Navbar specific enhancements */
.navbar .language-selector {
    margin-left: 1rem;
}

.navbar .language-selector__select {
    min-height: 2.25rem;
    font-size: 0.875rem;
}

/* Privacy policy page specific */
.privacy-policy-page .language-selector__select {
    background-color: var(--card-bg, #ffffff);
    color: var(--text-primary, #1f2937);
    border: 1px solid var(--border, #e5e7eb);
    margin-left: 1rem;
}

/* Success stories page navbar specific */
.stories-container .navbar .language-selector__select {
    background: var(--surface);
    color: var(--text-primary);
    border: 2px solid var(--border-light);
    padding: 0.5rem 2rem 0.5rem 1rem;
    font-weight: 500;
    font-size: 0.875rem;
}

/* Dark theme navbar enhancements */
[data-theme="dark"] .navbar .language-selector__select {
    background: var(--surface-elevated, #374151);
    border-color: var(--border-light, #4b5563);
    color: var(--text-primary, #f9fafb);
}

/* ================================
   RTL (Right-to-Left) Language Support
   ================================ */

/* Arabic language specific styling */
[lang="ar"] .language-selector__select,
[data-language="ar"] .language-selector__select,
.language-selector__select[data-lang="ar"] {
    direction: rtl;
    text-align: right;
}

/* RTL background position for dropdown arrow */
[lang="ar"] .language-selector__select,
[data-language="ar"] .language-selector__select {
    background-position: left 0.75rem center;
    padding-left: 2.5rem;
    padding-right: 0.75rem;
}

/* Dark theme RTL adjustments */
[data-theme="dark"][lang="ar"] .language-selector__select,
[data-theme="dark"] [data-language="ar"] .language-selector__select {
    background-position: left 0.75rem center;
}

/* Arabic font optimization */
.language-selector__select option[value="ar"] {
    font-family: "Noto Sans Arabic", "Arabic UI Text", "SF Arabic", "Segoe UI Arabic", 
                 "Tahoma", "Microsoft Sans Serif", sans-serif;
    font-size: 0.9em; /* Slightly smaller for better Arabic text rendering */
}

/* Enhanced flag display for Arabic */
.language-selector__select option[value="ar"] {
    text-rendering: optimizeLegibility;
    font-feature-settings: "liga" 1, "kern" 1, "calt" 1;
}

/* Page-level RTL support when Arabic is selected */
html[lang="ar"] {
    direction: rtl;
}

html[lang="ar"] body {
    text-align: right;
}

/* Navbar RTL adjustments for Arabic */
[lang="ar"] .navbar .language-selector {
    margin-right: 1rem;
    margin-left: 0;
}

/* Russian font optimization */
.language-selector__select option[value="rus"] {
    font-family: "Segoe UI", "Roboto", "Helvetica Neue", "Arial", "Noto Sans",
                 "Liberation Sans", "Apple Color Emoji", "Segoe UI Emoji",
                 "Segoe UI Symbol", "Noto Color Emoji", sans-serif;
    font-feature-settings: "liga" 1, "kern" 1;
    text-rendering: optimizeLegibility;
}

/* Spanish font optimization */
.language-selector__select option[value="es"] {
    font-family: "Segoe UI", "Roboto", "Helvetica Neue", "Arial", "Noto Sans",
                 "Liberation Sans", "Apple Color Emoji", "Segoe UI Emoji",
                 "Segoe UI Symbol", "Noto Color Emoji", sans-serif;
    font-feature-settings: "liga" 1, "kern" 1, "calt" 1;
    text-rendering: optimizeLegibility;
}

/* Enhanced Cyrillic support for Russian */
html[lang="rus"] {
    font-family: "Segoe UI", "Roboto", "Helvetica Neue", "Arial", "Noto Sans", sans-serif;
}

html[lang="rus"] body {
    font-feature-settings: "liga" 1, "kern" 1;
    text-rendering: optimizeLegibility;
}

/* Enhanced Latin support for Spanish */
html[lang="es"] {
    font-family: "Segoe UI", "Roboto", "Helvetica Neue", "Arial", "Noto Sans", sans-serif;
}

html[lang="es"] body {
    font-feature-settings: "liga" 1, "kern" 1, "calt" 1;
    text-rendering: optimizeLegibility;
}

/* Success stories page RTL adjustments */
[lang="ar"] .stories-container .navbar .language-selector__select {
    text-align: right;
    direction: rtl;
}

/* Subscription page RTL glass-morphism adjustments */
[lang="ar"] .subscription-page .language-selector__select,
[lang="ar"] .page-content .language-selector__select {
    direction: rtl;
    text-align: right;
    background-position: left 0.75rem center;
}

/* Privacy policy page RTL adjustments */
[lang="ar"] .privacy-policy-page .language-selector__select {
    direction: rtl;
    text-align: right;
    background-position: left 0.75rem center;
}