/* Responsive Design */

/* Large Desktop (1200px and up) */
@media (min-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
}

/* Desktop (992px to 1199px) */
@media (max-width: 1199px) {
    .hero-content {
        gap: 2rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }
}

/* Desktop (992px to 1199px) */
@media (max-width: 1199px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-lg);
    }
    
    .cases-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tablet (768px to 991px) */
@media (max-width: 991px) {
    :root {
        --container-padding: 1.5rem;
        --spacing-4xl: 3rem;
    }
    
    .nav-content {
        flex-wrap: wrap;
    }
    
    .nav-center {
        order: 3;
        flex-basis: 100%;
        margin-top: var(--spacing-md);
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        border-top: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-medium);
        border-radius: 0;
        margin-top: var(--spacing-sm);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-link {
        padding: var(--spacing-md);
        text-align: center;
        border-radius: var(--border-radius-md);
        background: rgba(248, 250, 252, 0.5);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .nav-actions {
        order: 2;
    }
    
    .btn-purchase {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-xs);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-xl);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .trust-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .download-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
        gap: var(--spacing-2xl);
    }
}

/* Mobile Large (576px to 767px) */
@media (max-width: 767px) {
    :root {
        --container-padding: 1rem;
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.5rem;
        --spacing-4xl: 2.5rem;
        --spacing-3xl: 2rem;
    }
    
    .nav-content {
        padding: var(--spacing-md) 0;
    }
    
    .nav-logo {
        font-size: var(--font-size-lg);
    }
    
    .nav-logo svg {
        width: 28px;
        height: 28px;
    }
    
    .nav-center {
        margin-top: var(--spacing-sm);
    }
    
    .nav-menu {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .btn-purchase {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-xs);
        min-width: auto;
    }
    
    .btn-purchase svg {
        width: 14px;
        height: 14px;
    }
    
    .hero {
        padding: calc(70px + var(--spacing-2xl)) 0 var(--spacing-2xl);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .hero-actions {
        flex-direction: column;
        gap: var(--spacing-md);
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-subtitle {
        font-size: var(--font-size-base);
    }
    
    .feature-card {
        padding: var(--spacing-xl);
    }
    
    .step {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .step-number {
        align-self: center;
    }
    
    .download-features {
        align-items: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-xl);
    }
}

/* Mobile Small (up to 575px) */
@media (max-width: 575px) {
    :root {
        --container-padding: 1rem;
        --font-size-5xl: 2rem;
        --font-size-4xl: 1.75rem;
        --font-size-3xl: 1.5rem;
        --spacing-4xl: 2rem;
        --spacing-3xl: 1.5rem;
        --spacing-2xl: 1.5rem;
    }
    
    .nav {
        padding: var(--spacing-sm) var(--container-padding);
    }
    
    .nav-brand {
        font-size: var(--font-size-base);
    }
    
    .logo {
        width: 32px;
        height: 32px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-stats {
        gap: var(--spacing-md);
    }
    
    .stat-number {
        font-size: var(--font-size-xl);
    }
    
    .btn-large {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
    }
    
    .section-header {
        margin-bottom: var(--spacing-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-xl);
    }
    
    .features-grid {
        gap: var(--spacing-lg);
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .trust-stats {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .customer-service {
        bottom: 20px;
        right: 20px;
    }
    
    .cs-button {
        padding: 12px 18px;
        font-size: 15px;
    }
    
    .cs-panel {
        width: 300px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        margin-bottom: var(--spacing-md);
    }
    
    .feature-title {
        font-size: var(--font-size-lg);
    }
    
    .step-number {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .step-title {
        font-size: var(--font-size-lg);
    }
    
    .download-title {
        font-size: var(--font-size-2xl);
    }
    
    .download-subtitle {
        font-size: var(--font-size-base);
    }
    
    .footer {
        padding: var(--spacing-2xl) 0 var(--spacing-lg);
    }
    
    .footer-brand {
        max-width: 100%;
    }
}

/* Extra Small Mobile (up to 375px) */
@media (max-width: 375px) {
    :root {
        --container-padding: 0.75rem;
        --spacing-4xl: 1.5rem;
        --spacing-3xl: 1.25rem;
        --spacing-2xl: 1rem;
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .section-title {
        font-size: var(--font-size-lg);
    }
    
    .feature-card {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .btn-large {
        padding: var(--spacing-md);
        font-size: var(--font-size-sm);
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-svg,
    .logo,
    .footer-logo {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #f8f9fa;
        --text-secondary: #e9ecef;
        --text-muted: #adb5bd;
        --background-primary: #212529;
        --background-secondary: #343a40;
        --background-tertiary: #495057;
        --border-color: #495057;
    }
    
    .header {
        background-color: rgba(33, 37, 41, 0.95);
        border-bottom-color: var(--border-color);
    }
    
    .hero {
        background: linear-gradient(135deg, var(--background-primary) 0%, var(--background-secondary) 100%);
    }
    
    .feature-card {
        background-color: var(--background-secondary);
        border-color: var(--border-color);
    }
    
    .footer-logo {
        filter: none;
    }
}

/* Print Styles */
@media print {
    .header,
    .nav-toggle,
    .hero-actions,
    .download,
    .footer {
        display: none;
    }
    
    .hero {
        padding-top: 0;
    }
    
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .section-title,
    .hero-title {
        page-break-after: avoid;
    }
    
    .feature-card,
    .step {
        page-break-inside: avoid;
    }
}