/* ===== CSS RESET & BASE STYLES ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #f59e0b;
    --accent: #10b981;
    
    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-white: #ffffff;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-dark: #111827;
    --bg-card: #ffffff;
    
    /* Border Colors */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    --border-dark: #374151;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1rem;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-muted: #9ca3af;
        --bg-primary: #111827;
        --bg-secondary: #1f2937;
        --bg-card: #1f2937;
        --border-light: #374151;
        --border-medium: #4b5563;
    }
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.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;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: var(--text-white);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: 100;
    transition: all var(--transition-normal);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--container-padding);
    min-height: 70px;
}

.nav__brand {
    flex-shrink: 0;
}

.nav__logo {
    display: block;
    transition: transform var(--transition-fast);
}

.nav__logo:hover {
    transform: scale(1.05);
}

.nav__logo img {
    height: 40px;
    width: auto;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav__list {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
    margin: 0;
}

.nav__link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav__link:hover {
    color: var(--primary);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav__link:hover::after {
    width: 100%;
}

/* Mobile Navigation Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    gap: 4px;
}

.nav__toggle-line {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-normal);
    transform-origin: center;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(2) {
    opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ===== LANGUAGE SELECTOR ===== */
.language-selector {
    position: relative;
}

.language-selector__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.language-selector__toggle:hover {
    background: var(--bg-card);
    border-color: var(--border-medium);
}

.language-selector__icon {
    transition: transform var(--transition-fast);
}

.language-selector__toggle[aria-expanded="true"] .language-selector__icon {
    transform: rotate(180deg);
}

.language-selector__dropdown {
    position: absolute;
    top: calc(100% + var(--space-sm));
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 150px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1000;
}

.language-selector__dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-selector__option {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: background-color var(--transition-fast);
}

.language-selector__option:hover {
    background: var(--bg-secondary);
}

.language-selector__option--active {
    background: var(--primary);
    color: var(--text-white);
}

.language-selector__option--active:hover {
    background: var(--primary-dark);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

.btn--primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-light);
}

.btn--secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn--large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border: 1px solid var(--border-light);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: var(--space-3xl);
}

.footer__content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer__brand img {
    height: 33px;
    width: auto;
    margin-bottom: var(--space-md);
}

.footer__description {
    color: var(--text-muted);
    max-width: 300px;
}

.footer__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.footer__list {
    list-style: none;
}

.footer__list li {
    margin-bottom: var(--space-sm);
}

.footer__link {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--text-white);
}

.footer__bottom {
    border-top: 1px solid var(--border-dark);
    padding-top: var(--space-xl);
    text-align: center;
}

.footer__copyright {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ===== RESPONSIVE DESIGN ===== */
/* Tablet styles */
@media (min-width: 768px) {
    :root {
        --container-padding: 2rem;
    }
    
    .footer__content {
        grid-template-columns: 2fr 1fr;
    }
}

/* Desktop styles */
@media (min-width: 1024px) {
    .nav__menu {
        gap: var(--space-2xl);
    }
    
    .nav__list {
        gap: var(--space-2xl);
    }
}

/* Mobile styles */
@media (max-width: 767px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border-light);
        flex-direction: column;
        padding: var(--space-xl);
        gap: var(--space-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }
    
    .nav__menu.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav__list {
        flex-direction: column;
        gap: var(--space-lg);
        width: 100%;
    }
    
    .nav__toggle {
        display: flex;
    }
    
    .language-selector__dropdown {
        right: auto;
        left: 0;
    }
}

/* 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;
    }
    
    html {
        scroll-behavior: auto;
    }
}
/* ===== QR CODE ENHANCEMENTS ===== */

/* QR Code hover effects */
.qr-code-image {
    position: relative;
    overflow: hidden;
}

.qr-code-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left var(--transition-slow);
}

.qr-code-image:hover::before {
    left: 100%;
}

/* QR Code pulse animation for attention */
.qr-code-pulse {
    animation: qrPulse 2s infinite;
}

@keyframes qrPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0);
    }
}

/* QR Code scan line animation */
.qr-scan-line {
    position: relative;
    overflow: hidden;
}

.qr-scan-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    animation: scanLine 2s linear infinite;
}

@keyframes scanLine {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(200px);
    }
}

/* QR Code success state */
.qr-code-success {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

/* QR Code loading state */
.qr-code-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: inherit;
}

/* Enhanced download buttons */
.download-btn-enhanced {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border: none;
    color: var(--text-white);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-normal);
}

.download-btn-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.download-btn-enhanced:hover::before {
    left: 100%;
}

.download-btn-enhanced:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.3);
}

/* QR Code tooltip */
.qr-tooltip {
    position: relative;
    display: inline-block;
}

.qr-tooltip::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 1000;
    margin-bottom: var(--space-sm);
}

.qr-tooltip::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--bg-dark);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.qr-tooltip:hover::before,
.qr-tooltip:hover::after {
    opacity: 1;
    visibility: visible;
}

/* QR Code badge */
.qr-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--accent);
    color: var(--text-white);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
    box-shadow: var(--shadow-md);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* QR Code grid enhancements */
.qr-grid-enhanced {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    position: relative;
    overflow: hidden;
}

.qr-grid-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="60" height="60" viewBox="0 0 60 60" xmlns="http://www.w3.org/2000/svg"><g fill="none" fill-rule="evenodd"><g fill="%23f3f4f6" fill-opacity="0.1"><circle cx="30" cy="30" r="2"/></g></svg>') repeat;
    opacity: 0.5;
}

/* Responsive QR code sizing */
@media (max-width: 480px) {
    .qr-code-image {
        width: 120px !important;
        height: 120px !important;
    }
    
    .qr-modal-image {
        width: 120px !important;
        height: 120px !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .qr-code-image {
        border-width: 3px;
        border-color: var(--text-primary);
    }
    
    .qr-button {
        border-width: 3px;
    }
}

/* Print styles for QR codes */
@media print {
    .qr-code-image {
        border: 2px solid #000;
        background: #fff;
    }
    
    .qr-button,
    .qr-modal {
        display: none;
    }
}

/* Focus styles for accessibility */
.qr-code-image:focus,
.qr-button:focus {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
}

/* Keyboard navigation styles */
.keyboard-navigation .qr-code-image:focus,
.keyboard-navigation .qr-button:focus {
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}
/* =====
 LANGUAGE TRANSITION STYLES ===== */
.language-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.language-transition-overlay.active {
    opacity: 1;
    visibility: visible;
}

.language-transition-content {
    text-align: center;
    padding: var(--space-2xl);
}

.language-transition-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-lg);
}

.language-transition-text {
    color: var(--text-secondary);
    font-size: var(--font-size-lg);
    font-weight: 500;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== LANGUAGE SUGGESTION BANNER ===== */
.language-suggestion-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-white);
    padding: var(--space-md) var(--space-lg);
    z-index: 1000;
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.language-suggestion-banner.show {
    transform: translateY(0);
}

.language-suggestion-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max-width);
    margin: 0 auto;
    gap: var(--space-lg);
}

.language-suggestion-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin: 0;
}

.language-suggestion-actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.language-suggestion-close {
    position: absolute;
    top: 50%;
    right: var(--space-lg);
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-white);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.language-suggestion-close:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Adjust body padding when banner is shown */
body.language-banner-shown {
    padding-top: 60px;
}

/* ===== ENHANCED LANGUAGE SELECTOR STYLES ===== */
.language-selector__dropdown {
    transform: translateY(-10px);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
}

.language-selector__dropdown.show {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.language-selector__option {
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.language-selector__option::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--transition-normal);
}

.language-selector__option:hover::before {
    left: 100%;
}

.language-selector__option:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== RESPONSIVE LANGUAGE BANNER ===== */
@media (max-width: 768px) {
    .language-suggestion-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .language-suggestion-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .language-suggestion-close {
        top: var(--space-sm);
        right: var(--space-sm);
        transform: none;
    }
    
    body.language-banner-shown {
        padding-top: 80px;
    }
}

@media (max-width: 480px) {
    .language-suggestion-banner {
        padding: var(--space-sm);
    }
    
    .language-suggestion-text {
        font-size: var(--font-size-xs);
    }
    
    .language-suggestion-actions .btn {
        font-size: var(--font-size-xs);
        padding: var(--space-xs) var(--space-sm);
    }
}/* ==
=== INTERACTIVE ELEMENTS & ANIMATIONS ===== */

/* Button Ripple Effect */
.btn {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.btn .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Card Hover Effects */
.feature-card,
.qr-code-container {
    transition: all var(--transition-normal);
    transform-style: preserve-3d;
}

.feature-card:hover,
.qr-code-container:hover {
    box-shadow: var(--shadow-xl);
}

/* Element Ripple Effect */
.element-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.3) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    animation: element-ripple 1s ease-out;
    pointer-events: none;
}

@keyframes element-ripple {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
    }
    100% {
        width: 200px;
        height: 200px;
        opacity: 0;
    }
}

/* QR Code Pulse Animation */
@keyframes qr-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 10px rgba(99, 102, 241, 0);
    }
}

/* Custom Tooltip */
.custom-tooltip {
    position: absolute;
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    transform: translateY(5px);
    transition: all var(--transition-fast);
    pointer-events: none;
    white-space: nowrap;
}

.custom-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--bg-dark);
}

.custom-tooltip.show {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Button States */
.btn.loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: button-loading 1s linear infinite;
}

@keyframes button-loading {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Smooth Scroll Indicators */
.scroll-indicator {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform-origin: left;
    transform: scaleX(0);
    transition: transform var(--transition-fast);
    z-index: 1000;
}

/* Floating Action Elements */
.floating-element {
    animation: float-gentle 6s ease-in-out infinite;
}

.floating-element:nth-child(2) {
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    animation-delay: 4s;
}

@keyframes float-gentle {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-10px) rotate(2deg);
    }
    66% {
        transform: translateY(5px) rotate(-1deg);
    }
}

/* Enhanced Hover States */
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary:hover {
    background-color: var(--primary);
    color: var(--text-white);
    border-color: var(--primary);
}

/* Interactive QR Codes */
.qr-code__image {
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.qr-code__image:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

/* Staggered Animation Classes */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* Micro-interactions for Navigation */
.nav__link {
    position: relative;
    transition: all var(--transition-normal);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

.nav__link:hover::after {
    width: 100%;
}

/* Enhanced Focus States for Accessibility */
.keyboard-navigation .btn:focus,
.keyboard-navigation .nav__link:focus,
.keyboard-navigation .language-selector__option:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
}

/* Scroll-triggered Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Performance Optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

/* 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;
    }
    
    .floating-element {
        animation: none;
    }
    
    .parallax-element {
        transform: none !important;
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .feature-card,
    .qr-code-container {
        border: 2px solid var(--text-primary);
    }
}

/* Print Styles */
@media print {
    .language-transition-overlay,
    .language-suggestion-banner,
    .custom-tooltip {
        display: none !important;
    }
    
    .btn {
        border: 1px solid #000;
        background: transparent !important;
        color: #000 !important;
    }
}
/* 
===== LANGUAGE SELECTOR STYLES ===== */
.language-selector {
    position: relative;
    display: inline-block;
}

.language-selector__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 120px;
}

.language-selector__toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--border-medium);
}

.language-selector__toggle:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.language-selector__current {
    flex: 1;
    text-align: left;
}

.language-selector__icon {
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.language-selector__toggle[aria-expanded="true"] .language-selector__icon {
    transform: rotate(180deg);
}

.language-selector__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    max-height: 300px;
    overflow-y: auto;
    margin-top: var(--space-xs);
}

.language-selector__dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-selector__dropdown li {
    list-style: none;
}

.language-selector__option {
    display: block;
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-normal);
    border: none;
    background: none;
    text-align: left;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.language-selector__option:hover {
    background: var(--bg-secondary);
    color: var(--primary);
}

.language-selector__option:focus {
    background: var(--bg-secondary);
    color: var(--primary);
    outline: none;
}

.language-selector__option--active {
    background: var(--primary-light);
    color: var(--text-white);
    font-weight: 600;
}

.language-selector__option--active:hover {
    background: var(--primary);
}

/* Mobile Language Selector */
@media (max-width: 768px) {
    .language-selector__toggle {
        min-width: 100px;
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-xs);
    }
    
    .language-selector__dropdown {
        left: auto;
        right: 0;
        min-width: 150px;
    }
}

/* Language Transition Overlay */
.language-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.language-transition-overlay.active {
    opacity: 1;
    visibility: visible;
}

.language-transition-content {
    text-align: center;
    color: var(--text-primary);
}

.language-transition-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

.language-transition-text {
    font-size: var(--font-size-lg);
    font-weight: 500;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Language Suggestion Banner */
.language-suggestion-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--text-white);
    padding: var(--space-md);
    z-index: 1000;
    transform: translateY(-100%);
    transition: transform var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.language-suggestion-banner.show {
    transform: translateY(0);
}

.language-suggestion-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    gap: var(--space-lg);
}

.language-suggestion-text {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.language-suggestion-actions {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

.language-suggestion-close {
    position: absolute;
    top: 50%;
    right: var(--space-md);
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-white);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.language-suggestion-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Adjust body when language banner is shown */
body.language-banner-shown {
    padding-top: 60px;
}