/* ========================================
   CSS Variables & Root Styles
   ======================================== */
:root {
    /* Colors */
    --primary-color: #00897B;
    --primary-dark: #00695C;
    --primary-light: #4DB6AC;
    --secondary-color: #4CAF50;
    --accent-color: #FFB300;
    --accent-gold: #FFD54F;
    
    /* Neutral Colors */
    --dark-bg: #1A1A2E;
    --dark-card: #16213E;
    --dark-text: #E8E8E8;
    --light-bg: #F5F7FA;
    --light-card: #FFFFFF;
    --light-text: #2C3E50;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00897B 0%, #4CAF50 100%);
    --gradient-secondary: linear-gradient(135deg, #FFB300 0%, #FF6F00 100%);
    --gradient-dark: linear-gradient(135deg, #1A1A2E 0%, #16213E 100%);
    --gradient-overlay: linear-gradient(135deg, rgba(0, 137, 123, 0.9) 0%, rgba(76, 175, 80, 0.9) 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Typography */
    --font-primary: 'Cairo', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(0, 137, 123, 0.3);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--light-bg);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
}

body[dir="rtl"] {
    font-family: var(--font-primary);
}

body[dir="ltr"] {
    font-family: var(--font-secondary);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

/* Prevent horizontal overflow */
body {
    overflow-x: hidden;
}

* {
    min-width: 0;
}

/* ========================================
   Language Toggle
   ======================================== */
.lang-toggle {
    background: var(--gradient-primary);
    color: white;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}

/* Animated gradient background */
.lang-toggle::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(0deg);
    animation: rotateGradient 3s linear infinite;
}

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

.lang-toggle:hover {
    transform: scale(1.15) rotate(10deg);
    box-shadow: 0 0 20px rgba(0, 137, 123, 0.6), var(--shadow-lg);
}

.lang-toggle:active {
    transform: scale(0.95);
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-md);
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.logo:hover {
    transform: translateY(-2px);
}

.logo:hover .logo-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    filter: drop-shadow(0 2px 4px rgba(0, 137, 123, 0.2));
}

.logo:hover img {
    transform: rotate(360deg) scale(1.1);
    filter: drop-shadow(0 4px 8px rgba(0, 137, 123, 0.4));
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-weight: 600;
    color: var(--light-text);
    position: relative;
    padding: var(--spacing-xs) 0;
    /* Accessibility: Larger touch target */
    min-height: 44px;
    display: flex;
    align-items: center;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
    box-shadow: 0 0 10px rgba(0, 137, 123, 0.5);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 24px;
    flex-shrink: 0;
    order: 3;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* Menu toggle animation */
.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-overlay);
}

.pattern-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: patternMove 20s ease-in-out infinite;
}

@keyframes patternMove {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, 20px); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.1rem;
    transition: all var(--transition-normal);
    /* Accessibility: Minimum touch target */
    min-height: 44px;
    min-width: 44px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

/* Button ripple effect */
.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

/* Animated gradient border */
.btn-primary::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.btn-primary:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 30px rgba(0, 137, 123, 0.4);
    color: white;
    background: var(--gradient-primary);
}

.btn-primary:hover::after {
    opacity: 1;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-secondary::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 0.5s;
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--accent-gold);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-image {
    animation: fadeInRight 1s ease;
}

.phone-mockup {
    position: relative;
    max-width: 400px;
    margin: 0 auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

.phone-mockup img {
    border-radius: var(--radius-xl);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 15px;
    position: relative;
}

.mouse::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; transform: translateX(-50%) translateY(0); }
    100% { opacity: 0; transform: translateX(-50%) translateY(15px); }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-bounce);
    border: 1px solid rgba(0, 137, 123, 0.1);
    position: relative;
    overflow: hidden;
}

/* Animated shine effect */
.feature-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 137, 123, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.feature-card:hover::before {
    transform: translateX(100%);
}

.feature-card:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: 0 15px 40px rgba(0, 137, 123, 0.3);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
    transition: all var(--transition-bounce);
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 137, 123, 0.3);
}

/* Pulsing glow effect */
.feature-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: inherit;
    border-radius: inherit;
    transform: translate(-50%, -50%);
    animation: pulse 2s ease-in-out infinite;
    opacity: 0;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 0.3;
    }
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(10deg);
    box-shadow: 0 8px 25px rgba(0, 137, 123, 0.5);
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: #666;
    line-height: 1.7;
}

/* ========================================
   Screenshots Section
   ======================================== */
.screenshots {
    background: var(--light-bg);
}

.screenshots-slider {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.screenshots-container {
    display: flex;
    gap: var(--spacing-lg);
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: var(--spacing-md) 0;
    scrollbar-width: none;
}

.screenshots-container::-webkit-scrollbar {
    display: none;
}

.screenshot-item {
    flex: 0 0 300px;
    text-align: center;
}

.screenshot-item img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-bounce);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.screenshot-item:hover img {
    transform: scale(1.1) translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 137, 123, 0.4);
    filter: brightness(1.05);
}

.screenshot-item p {
    font-weight: 600;
    color: var(--primary-color);
    transition: all var(--transition-normal);
}

.screenshot-item:hover p {
    transform: scale(1.1);
    text-shadow: 0 2px 10px rgba(0, 137, 123, 0.3);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    color: var(--primary-color);
    transition: var(--transition-normal);
    z-index: 10;
}

.slider-btn:hover {
    background: var(--primary-color);
    color: white;
}

.slider-btn.prev {
    left: -25px;
}

.slider-btn.next {
    right: -25px;
}

/* ========================================
   Download Section
   ======================================== */
.download {
    background: var(--gradient-primary);
    color: white;
}

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.download-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
}

.download-subtitle {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.store-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-bounce);
    max-width: 250px;
    position: relative;
    overflow: hidden;
}

/* Sliding gradient effect */
.store-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 0.6s;
}

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

.store-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(-8px) scale(1.05);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

body[dir="ltr"] .store-btn:hover {
    transform: translateX(8px) scale(1.05);
}

.store-btn svg {
    flex-shrink: 0;
}

.store-btn div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.store-text {
    font-size: 0.75rem;
    opacity: 0.9;
}

.store-name {
    font-size: 1.1rem;
    font-weight: 700;
}

.qr-code {
    text-align: center;
}

.qr-placeholder {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: inline-block;
    margin-bottom: var(--spacing-sm);
}

.qr-placeholder svg {
    color: var(--primary-color);
}

.qr-code p {
    font-size: 0.9rem;
    opacity: 0.9;
}

.download-image img {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark-bg);
    color: var(--dark-text);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
}

.footer-description {
    opacity: 0.8;
    line-height: 1.7;
}

.footer-section h4 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.footer-links li,
.footer-contact li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a,
.footer-contact a {
    opacity: 0.8;
    transition: var(--transition-normal);
}

.footer-links a:hover,
.footer-contact a:hover {
    opacity: 1;
    color: var(--primary-light);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.footer-contact svg {
    flex-shrink: 0;
    color: var(--primary-light);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

body[dir="rtl"] .back-to-top {
    right: auto;
    left: 30px;
}

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

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

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

body[dir="rtl"] .hero-image {
    animation: fadeInRightRTL 1s ease;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 968px) {
    /* Adjust navbar for tablets */
    .nav-wrapper {
        gap: var(--spacing-sm);
    }
    
    .logo {
        font-size: 1.1rem;
    }
    
    .logo img {
        width: 35px;
        height: 35px;
    }
    
    .hero-content,
    .download-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .phone-mockup {
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Mobile navbar layout */
    .nav-wrapper {
        gap: var(--spacing-xs);
    }
    
    .logo {
        font-size: 1rem;
        flex: 1;
        order: 1;
    }
    
    /* Keep logo text visible on mobile */
    .logo-text {
        font-size: 0.9rem;
    }
    
    .lang-toggle {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
        order: 2;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
        padding: var(--spacing-xs) 0;
    }
    
    .nav-menu a {
        justify-content: center;
        padding: var(--spacing-md);
        border-radius: var(--radius-sm);
        transition: all var(--transition-fast);
    }
    
    .nav-menu a:hover {
        background: rgba(0, 137, 123, 0.1);
    }
    
    .menu-toggle {
        display: flex;
        padding: var(--spacing-xs);
        /* Accessibility: Larger touch target */
        min-width: 44px;
        min-height: 44px;
    }
    
    .hero-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.6;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .slider-btn {
        display: none;
    }
    
    .download-buttons {
        align-items: center;
    }
    
    .download-title {
        font-size: 2rem;
    }
    
    .download-subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding-top: 70px;
    }
    
    .hero-title {
        font-size: 1.75rem;
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: 0.95rem;
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        gap: var(--spacing-sm);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .stat-item {
        width: 100%;
        text-align: center;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-subtitle {
        font-size: 0.95rem;
    }
    
    .feature-title {
        font-size: 1.2rem;
    }
    
    .feature-description {
        font-size: 0.95rem;
    }
    
    .phone-mockup {
        max-width: 280px;
    }
    
    .store-btn {
        max-width: 100%;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
    text-align: center;
}

.hidden {
    display: none;
}

.visible {
    display: block;
}

/* ========================================
   Focus States & Accessibility
   ======================================== */
/* Improved focus states for keyboard navigation */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Skip focus outline for mouse users */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
    outline: none;
}

/* Visible focus for keyboard users */
a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .feature-card {
        border: 2px solid var(--primary-color);
    }
}

/* 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;
    }
}

/* Print styles */
@media print {
    .navbar,
    .lang-toggle,
    .back-to-top,
    .scroll-indicator {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero,
    .features,
    .download {
        page-break-inside: avoid;
    }
}

/* Loading state for images */
img {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

img[src] {
    background: none;
    animation: none;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Smooth scroll behavior enhancement */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* Enhanced hover effects for desktop */
@media (hover: hover) and (pointer: fine) {
    .feature-card:hover {
        transform: translateY(-10px) scale(1.02);
    }
    
    .screenshot-item:hover img {
        transform: scale(1.08);
    }
    
    .nav-menu a:hover {
        color: var(--primary-color);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .feature-card:active {
        transform: scale(0.98);
    }
    
    .btn:active {
        transform: scale(0.95);
    }
}