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

:root {
    --primary-color: #0066cc;
    --primary-dark: #0052a3;
    --primary-light: #4d94ff;
    --secondary-color: #ff9900;
    --secondary-dark: #e68a00;
    --light-color: #f0f8ff;
    --dark-color: #333333;
    --text-color: #444444;
    --light-gray: #f5f5f5;
    --medium-gray: #dddddd;
    --dark-gray: #777777;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --safe-area-inset-top: env(safe-area-inset-top);
    --safe-area-inset-bottom: env(safe-area-inset-bottom);
    --safe-area-inset-left: env(safe-area-inset-left);
    --safe-area-inset-right: env(safe-area-inset-right);
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    color: var(--dark-color);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    -webkit-tap-highlight-color: rgba(0, 102, 204, 0.1);
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 8px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    font-size: 16px;
    line-height: 1.4;
    touch-action: manipulation;
    min-height: 48px;
    min-width: 48px;
}

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

.btn:active {
    transform: translateY(0);
}

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

.btn-light:hover {
    background-color: var(--light-gray);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid white;
    color: white;
}

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

.highlight {
    color: var(--secondary-color);
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 1rem;
    position: relative;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1rem;
    color: var(--dark-gray);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

/* Header Styles - Mobile First Approach */
.header {
    background-color: white;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    padding-top: var(--safe-area-inset-top);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    max-width: 100%;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-color);
    min-height: 44px;
    min-width: 44px;
    justify-content: center;
}

.logo i {
    color: var(--secondary-color);
    margin-right: 8px;
    font-size: 1.5rem;
}

.main-nav {
    position: relative;
    width: 100%;
}

/* Mobile Navigation by Default */
.nav-menu {
    display: none;
    flex-direction: column;
    width: 100%;
    background-color: white;
    position: fixed;
    top: calc(60px + var(--safe-area-inset-top));
    left: 0;
    right: 0;
    bottom: 0;
    box-shadow: var(--shadow);
    z-index: 999;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: calc(20px + var(--safe-area-inset-bottom));
}

.nav-menu.active {
    display: flex;
}

.nav-menu > li {
    position: relative;
    width: 100%;
    border-bottom: 1px solid var(--light-gray);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 18px 20px;
    font-weight: 500;
    color: var(--dark-color);
    white-space: nowrap;
    justify-content: space-between;
    width: 100%;
    font-size: 16px;
    min-height: 48px;
    touch-action: manipulation;
}

.nav-link i {
    margin-right: 12px;
    font-size: 1.1rem;
    min-width: 24px;
}

.nav-link:hover, .nav-link.active {
    color: var(--primary-color);
    background-color: var(--light-color);
}

.dropdown > .nav-link:after {
    content: '\f078';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.dropdown.active > .nav-link:after {
    transform: rotate(180deg);
}

.dropdown-content {
    display: none;
    background-color: var(--light-gray);
    width: 100%;
}

.dropdown.active .dropdown-content {
    display: block;
}

.dropdown-content a {
    color: var(--dark-color);
    padding: 16px 20px 16px 40px;
    display: block;
    border-bottom: 1px solid var(--medium-gray);
    font-size: 15px;
    min-height: 48px;
    display: flex;
    align-items: center;
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background-color: rgba(0, 102, 204, 0.1);
    color: var(--primary-color);
}

.mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-color);
    min-height: 44px;
    min-width: 44px;
    background: none;
    border: none;
    padding: 10px;
}

.mobile-toggle i {
    transition: transform 0.3s ease;
}

.mobile-toggle.active i {
    transform: rotate(90deg);
}

/* Overlay for mobile menu */
.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.menu-overlay.active {
    display: block;
}

/* Tablet Styles (768px and up) */
@media (min-width: 768px) {
    .header .container {
        padding: 15px 20px;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 1.8rem;
    }
    
    .mobile-toggle {
        display: none;
    }
    
    .nav-menu {
        display: flex;
        flex-direction: row;
        position: static;
        background-color: transparent;
        box-shadow: none;
        overflow-y: visible;
        padding-bottom: 0;
        justify-content: space-between;
    }
    
    .nav-menu > li {
        width: auto;
        border-bottom: none;
        flex: 1;
        text-align: center;
    }
    
    .nav-link {
        padding: 15px 8px;
        justify-content: center;
        font-size: 14px;
    }
    
    .nav-link i {
        margin-right: 6px;
        font-size: 1rem;
    }
    
    .dropdown > .nav-link:after {
        content: '\f078';
        font-size: 0.8rem;
    }
    
    .dropdown:hover .dropdown-content {
        display: block;
    }
    
    .dropdown-content {
        position: absolute;
        background-color: white;
        min-width: 200px;
        box-shadow: var(--shadow);
        border-radius: 4px;
        top: 100%;
        left: 0;
    }
    
    .dropdown-content a {
        padding: 12px 15px;
        font-size: 14px;
        min-height: auto;
        justify-content: flex-start;
    }
    
    .menu-overlay {
        display: none !important;
    }
}

/* Desktop Styles (1024px and up) */
@media (min-width: 1024px) {
    .header .container {
        padding: 15px 30px;
    }
    
    .logo {
        font-size: 1.8rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
    
    .nav-link {
        padding: 15px 10px;
        font-size: 15px;
    }
    
    .nav-link i {
        margin-right: 8px;
        font-size: 1.1rem;
    }
    
    .dropdown-content {
        min-width: 220px;
    }
    
    .dropdown-content a {
        padding: 12px 20px;
        font-size: 14px;
    }
}

/* Large Desktop Styles (1200px and up) */
@media (min-width: 1200px) {
    .nav-link {
        padding: 15px 15px;
        font-size: 16px;
    }
}

/* Hero Slider - Mobile Optimized */
.hero {
    position: relative;
    height: 70vh;
    min-height: 500px;
    overflow: hidden;
    margin-top: calc(-1 * var(--safe-area-inset-top));
}

.hero-slider {
    position: relative;
    height: 100%;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    max-width: 90%;
    padding: 0 20px;
    color: white;
    text-align: center;
}

.slide-content h1 {
    font-size: 2rem;
    color: white;
    margin-bottom: 15px;
    line-height: 1.2;
}

.slide-content p {
    font-size: 1rem;
    margin-bottom: 25px;
    opacity: 0.9;
    line-height: 1.5;
}

.slide-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.slider-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
    z-index: 3;
}

.prev-btn, .next-btn {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    min-height: 44px;
    min-width: 44px;
    touch-action: manipulation;
}

.prev-btn:hover, .next-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 3;
    padding-bottom: var(--safe-area-inset-bottom);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
    transition: var(--transition);
    min-height: 10px;
    min-width: 10px;
}

.dot.active {
    background-color: white;
    transform: scale(1.2);
}

@media (min-width: 768px) {
    .slide-content h1 {
        font-size: 2.5rem;
    }
    
    .slide-content p {
        font-size: 1.2rem;
    }
    
    .slide-content {
        max-width: 650px;
        padding: 0 40px;
        text-align: left;
    }
}

/* Content Sections - Mobile Optimized */
.main-content {
    min-height: 70vh;
    padding: 30px 0;
    background-color: white;
}

.content-area {
    padding: 15px;
}

.page-title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--primary-dark);
    border-left: 5px solid var(--secondary-color);
    padding-left: 15px;
    line-height: 1.3;
}

.page-subtitle {
    font-size: 1rem;
    color: var(--dark-gray);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin: 30px 0;
}

.content-card {
    background-color: var(--light-color);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.content-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-dark);
    line-height: 1.3;
}

.content-image {
    height: 180px;
    background-size: cover;
    background-position: center;
    border-radius: 6px;
    margin-bottom: 15px;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--light-gray);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Form Styles - Mobile Optimized */
.form-container {
    width: 100%;
    margin: 0 auto;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
    font-size: 16px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--medium-gray);
    border-radius: 6px;
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    transition: var(--transition);
    background-color: white;
    -webkit-appearance: none;
    appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    min-height: 20px;
    min-width: 20px;
}

/* Generation Methods Section - Mobile Optimized */
.generation-methods {
    padding: 50px 0;
    background-color: white;
}

.methods-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 30px;
}

.method-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.method-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.method-icon {
    background-color: var(--light-color);
    padding: 20px;
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
}

.method-card h3 {
    padding: 15px 15px 10px;
    font-size: 1.3rem;
}

.method-card p {
    padding: 0 15px 15px;
    color: var(--dark-gray);
    line-height: 1.5;
}

.method-image {
    height: 180px;
    background-size: cover;
    background-position: center;
}

/* Meter Solutions Section - Mobile Optimized */
.meter-solutions {
    padding: 50px 0;
    background-color: var(--light-color);
}

.solutions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 30px;
}

.solution-card {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary-color);
}

.solution-card.featured {
    border-top-color: var(--secondary-color);
}

.solution-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.solution-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.solution-header i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 15px;
}

.solution-card.featured .solution-header i {
    color: var(--secondary-color);
}

.solution-header h3 {
    font-size: 1.3rem;
}

.solution-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--light-gray);
    display: flex;
    align-items: center;
    font-size: 14px;
}

.solution-features li:last-child {
    border-bottom: none;
}

.solution-features i {
    color: var(--secondary-color);
    margin-right: 10px;
    font-size: 1rem;
}

.solution-link {
    display: inline-block;
    margin-top: 15px;
    font-weight: 500;
    color: var(--primary-color);
    font-size: 15px;
    min-height: 44px;
    display: flex;
    align-items: center;
}

.solution-link i {
    margin-left: 5px;
    transition: var(--transition);
}

.solution-link:hover i {
    transform: translateX(5px);
}

/* Call to Action - Mobile Optimized */
.cta {
    padding: 50px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
    font-size: 1.8rem;
    margin-bottom: 15px;
    line-height: 1.3;
}

.cta p {
    font-size: 1rem;
    max-width: 700px;
    margin: 0 auto 25px;
    opacity: 0.9;
    line-height: 1.5;
    padding: 0 15px;
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.cta-buttons .btn {
    width: 100%;
    max-width: 280px;
}

/* Footer - Mobile Optimized */
.footer {
    background-color: #1a2b3c;
    color: white;
    padding: 40px 0 20px;
    padding-bottom: calc(20px + var(--safe-area-inset-bottom));
}

.footer h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: white;
}

.footer-logo i {
    color: var(--secondary-color);
    margin-right: 10px;
    font-size: 1.8rem;
}

.footer-about {
    margin-bottom: 20px;
    line-height: 1.6;
    opacity: 0.8;
    font-size: 14px;
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
    min-height: 40px;
    min-width: 40px;
}

.social-links a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    opacity: 0.8;
    transition: var(--transition);
    font-size: 14px;
    display: block;
    padding: 5px 0;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--secondary-color);
    padding-left: 5px;
}

.contact-info li {
    display: flex;
    margin-bottom: 15px;
    opacity: 0.8;
    font-size: 14px;
    align-items: flex-start;
}

.contact-info i {
    color: var(--secondary-color);
    margin-right: 10px;
    margin-top: 3px;
    font-size: 1rem;
    min-width: 20px;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    opacity: 0.7;
    font-size: 13px;
}

.footer-bottom a {
    opacity: 0.8;
}

.footer-bottom a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

/* Backend Integration Panel - Mobile Optimized */
.backend-panel {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    margin-bottom: var(--safe-area-inset-bottom);
}

.backend-toggle {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 16px;
    border-radius: 30px;
    font-weight: 500;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    min-height: 44px;
    touch-action: manipulation;
}

.backend-toggle:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-3px);
}

.backend-content {
    display: none;
    position: absolute;
    bottom: 60px;
    right: 0;
    width: 300px;
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 15px;
    border-top: 4px solid var(--secondary-color);
    max-height: 400px;
    overflow-y: auto;
}

.backend-content h4 {
    color: var(--primary-dark);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
}

.backend-content ul {
    margin-bottom: 15px;
}

.backend-content li {
    padding: 8px 0;
    border-bottom: 1px solid var(--light-gray);
    font-size: 14px;
}

.backend-content li strong {
    color: var(--primary-color);
}

.api-endpoints {
    background-color: var(--light-color);
    padding: 12px;
    border-radius: 6px;
    margin-top: 12px;
}

.api-endpoints h5 {
    margin-bottom: 8px;
    color: var(--dark-color);
    font-size: 0.9rem;
}

.api-endpoints code {
    display: block;
    background-color: white;
    padding: 8px 10px;
    border-radius: 4px;
    margin-bottom: 6px;
    font-family: monospace;
    font-size: 11px;
    border-left: 3px solid var(--primary-color);
    overflow-x: auto;
    white-space: nowrap;
}

/* Tablet Optimizations */
@media (min-width: 768px) {
    /* General Typography */
    .section-title {
        font-size: 2.2rem;
    }
    
    .section-subtitle {
        font-size: 1.1rem;
    }
    
    /* Content Grids */
    .content-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }
    
    .methods-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .solutions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Hero Section */
    .hero {
        height: 75vh;
        min-height: 550px;
    }
    
    .slide-content h1 {
        font-size: 2.5rem;
    }
    
    .slide-content p {
        font-size: 1.2rem;
    }
    
    /* Forms */
    .form-container {
        max-width: 600px;
        padding: 30px;
    }
    
    /* CTA Buttons */
    .cta-buttons {
        flex-direction: row;
        justify-content: center;
        gap: 20px;
    }
    
    .cta-buttons .btn {
        width: auto;
    }
    
    /* Footer */
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Backend Panel */
    .backend-content {
        width: 350px;
    }
}

/* Desktop Optimizations */
@media (min-width: 1024px) {
    /* Content Grids */
    .content-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    .methods-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .solutions-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .solution-card.featured {
        transform: scale(1.05);
    }
    
    .solution-card.featured:hover {
        transform: translateY(-10px) scale(1.05);
    }
    
    /* Sections */
    .generation-methods {
        padding: 80px 0;
    }
    
    .meter-solutions {
        padding: 80px 0;
    }
    
    .cta {
        padding: 80px 0;
    }
    
    .cta h2 {
        font-size: 2.5rem;
    }
    
    .cta p {
        font-size: 1.2rem;
    }
    
    /* Footer */
    .footer {
        padding: 60px 0 20px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    /* Hero */
    .hero {
        height: 80vh;
        min-height: 600px;
    }
    
    .slide-content h1 {
        font-size: 3rem;
    }
}

/* Large Desktop Optimizations */
@media (min-width: 1200px) {
    .container {
        padding: 0 30px;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .content-card h3 {
        font-size: 1.5rem;
    }
}

/* iPhone Notch & Safe Area Support */
@supports (padding: max(0px)) {
    .header {
        padding-top: max(12px, var(--safe-area-inset-top));
    }
    
    .nav-menu {
        top: calc(60px + max(12px, var(--safe-area-inset-top)));
    }
    
    .slider-dots {
        padding-bottom: max(20px, var(--safe-area-inset-bottom));
    }
    
    .footer {
        padding-bottom: max(20px, var(--safe-area-inset-bottom));
    }
    
    .backend-panel {
        margin-bottom: max(20px, var(--safe-area-inset-bottom));
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        transform: none;
    }
    
    .content-card:hover {
        transform: none;
    }
    
    .method-card:hover {
        transform: none;
    }
    
    .solution-card:hover {
        transform: none;
    }
    
    .social-links a:hover {
        transform: none;
    }
    
    .backend-toggle:hover {
        transform: none;
    }
    
    /* Increase touch targets */
    .nav-link {
        padding: 20px;
    }
    
    .dropdown-content a {
        padding: 20px 20px 20px 40px;
    }
    
    .btn {
        padding: 16px 32px;
    }
}

/* High DPI Screens */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo i {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Print Styles */
@media print {
    .header, .footer, .backend-panel, .mobile-toggle {
        display: none !important;
    }
    
    body {
        background-color: white;
        color: black;
    }
    
    .btn {
        background-color: white;
        color: black;
        border: 1px solid black;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --light-color: #1a2b3c;
        --dark-color: #f0f8ff;
        --text-color: #dddddd;
        --light-gray: #2a3b4c;
        --medium-gray: #3a4b5c;
        --dark-gray: #aaaaaa;
    }
    
    .header {
        background-color: #1a2b3c;
    }
    
    .nav-menu {
        background-color: #1a2b3c;
    }
    
    .dropdown-content {
        background-color: #2a3b4c;
    }
    
    .content-card {
        background-color: #2a3b4c;
    }
    
    .method-card {
        background-color: #2a3b4c;
    }
    
    .solution-card {
        background-color: #2a3b4c;
    }
    
    .form-container {
        background-color: #2a3b4c;
    }
}

/* Landscape Mode Optimizations */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        height: 100vh;
        min-height: auto;
    }
    
    .nav-menu {
        max-height: 70vh;
    }
    
    .slide-content h1 {
        font-size: 1.8rem;
    }
    
    .slide-content p {
        font-size: 0.9rem;
        margin-bottom: 15px;
    }
}

/* Small Phone Optimizations (iPhone 5/SE) */
@media (max-width: 320px) {
    .logo {
        font-size: 1.1rem;
    }
    
    .logo i {
        font-size: 1.3rem;
    }
    
    .slide-content h1 {
        font-size: 1.5rem;
    }
    
    .slide-content p {
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 14px;
    }
    
    .form-container {
        padding: 15px;
    }
    
    .content-card {
        padding: 15px;
    }
}

/* Fix for iOS input zoom */
@media screen and (max-width: 767px) {
    input,
    select,
    textarea {
        font-size: 16px !important;
    }
}

/* Fix for sticky hover on mobile */
@media (hover: hover) and (pointer: fine) {
    .nav-link:hover,
    .dropdown-content a:hover,
    .btn:hover,
    .social-links a:hover,
    .backend-toggle:hover {
        /* Hover effects only on devices that support hover */
        transform: translateY(-2px);
    }
}