/* Mobile First Responsive Design */

/* Large Desktop */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .section-title {
        font-size: 3rem;
    }
}

/* Desktop */
@media (max-width: 1199px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero .container {
        gap: 3rem;
    }
}

/* Tablet */
@media (max-width: 991px) {
    .container {
        padding: 0 15px;
    }
    
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        border-top: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-list {
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-cta {
        display: none;
    }
    
    /* Hero Section */
    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero .container {
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-description {
        font-size: 1.1rem;
    }
    
    /* Sections */
    .section-title {
        font-size: 2rem;
    }
    
    /* Steps */
    .steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Pricing */
    .pricing-cards {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .pricing-card.featured {
        transform: none;
        order: -1;
    }
    
    /* Audience Grid */
    .audience-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    /* Industry Cards */
    .industry-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
    
    .industry-card.featured {
        transform: none;
        order: -1;
    }
    
    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* Mobile Large */
@media (max-width: 767px) {
    /* Typography */
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 2rem;
    }
    
    /* Buttons */
    .btn {
        padding: 14px 20px;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 16px 24px;
        font-size: 1rem;
    }
    
    /* Hero */
    .hero {
        padding: 90px 0 50px;
    }
    
    .hero .container {
        gap: 2rem;
    }
    
    /* Phone Mockup */
    .phone-mockup {
        max-width: 220px;
        padding: 15px;
        border-width: 6px;
    }
    
    .chat-header {
        padding: 12px;
        font-size: 0.9rem;
    }
    
    .chat-messages {
        padding: 15px 10px;
        min-height: 200px;
    }
    
    .message {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    /* Sections */
    .how-it-works,
    .pricing,
    .target-audience,
    .testimonials,
    .faq,
    .final-cta {
        padding: 40px 0;
    }
    
    /* Steps */
    .step {
        padding: 1.5rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .step h3 {
        font-size: 1.2rem;
    }
    
    .step p {
        font-size: 1rem;
    }
    
    /* Pricing */
    .pricing-card {
        padding: 2rem 1.5rem;
    }
    
    .amount {
        font-size: 2.5rem;
    }
    
    .card-features li {
        font-size: 1rem;
        padding: 10px 0;
    }
    
    /* Audience Grid */
    .audience-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .audience-item {
        padding: 1.5rem 1rem;
    }
    
    .audience-item i {
        font-size: 2.5rem;
    }
    
    .audience-item h3 {
        font-size: 1.1rem;
    }
    
    /* Industry Cards */
    .industry-cards {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .industry-card {
        padding: 2rem 1.5rem;
    }
    
    .card-icon i {
        font-size: 3rem;
    }
    
    .card-title {
        font-size: 1.5rem;
    }
    
    .card-subtitle {
        font-size: 1.1rem;
    }
    
    .card-description {
        font-size: 1rem;
    }
    
    .card-features li {
        font-size: 1rem;
        padding: 10px 0;
    }
    
    /* Testimonials */
    .testimonial {
        padding: 2rem 1.5rem;
    }
    
    .testimonial-content p {
        font-size: 1.1rem;
    }
    
    /* FAQ */
    .faq-question h3 {
        font-size: 1.1rem;
    }
    
    .faq-answer p {
        font-size: 1rem;
    }
    
    /* Final CTA */
    .final-cta h2 {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }
}

/* Mobile Small */
@media (max-width: 575px) {
    .container {
        padding: 0 10px;
    }
    
    /* Navigation */
    .nav {
        padding: 0.8rem 10px;
    }
    
    .nav-brand {
        font-size: 1.1rem;
    }
    
    .nav-brand i {
        font-size: 1.3rem;
    }
    
    /* Hero */
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    /* Phone Mockup */
    .phone-mockup {
        max-width: 200px;
        padding: 12px;
        border-width: 5px;
    }
    
    /* Buttons */
    .btn {
        padding: 12px 16px;
        font-size: 0.85rem;
    }
    
    .btn-large {
        padding: 14px 20px;
        font-size: 0.95rem;
    }
    
    /* Pricing */
    .pricing-card {
        padding: 1.5rem 1rem;
    }
    
    .popular-badge {
        font-size: 0.8rem;
        padding: 6px 16px;
    }
    
    .amount {
        font-size: 2.2rem;
    }
    
    /* Steps */
    .step {
        padding: 1.2rem;
    }
    
    .step-number {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
        margin-bottom: 1rem;
    }
    
    .step h3 {
        font-size: 1.1rem;
        margin-bottom: 0.8rem;
    }
    
    /* Testimonials */
    .testimonial {
        padding: 1.5rem 1rem;
    }
    
    .testimonial-content i {
        font-size: 1.5rem;
    }
    
    .testimonial-content p {
        font-size: 1rem;
    }
    
    /* FAQ */
    .faq-question {
        padding: 1rem 0;
    }
    
    .faq-item.active .faq-answer {
        padding-bottom: 1rem;
    }
    
    /* Final CTA */
    .final-cta h2 {
        font-size: 1.8rem;
    }
}

/* Mobile Extra Small */
@media (max-width: 375px) {
    .hero-title {
        font-size: 1.6rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
    
    .phone-mockup {
        max-width: 180px;
    }
    
    .chat-messages {
        min-height: 180px;
        padding: 12px 8px;
    }
    
    .message {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
    
    .pricing-card {
        padding: 1.2rem 0.8rem;
    }
    
    .amount {
        font-size: 2rem;
    }
    
    .step {
        padding: 1rem;
    }
    
    .testimonial {
        padding: 1.2rem 0.8rem;
    }
    
    .final-cta h2 {
        font-size: 1.6rem;
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 80px 0 40px;
    }
    
    .hero .container {
        gap: 2rem;
    }
    
    .phone-mockup {
        max-width: 180px;
    }
    
    .chat-messages {
        min-height: 150px;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .phone-mockup {
        border-width: 4px;
    }
}

/* Accessibility - 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-dark: #f9fafb;
        --text-gray: #d1d5db;
        --bg-light: #1f2937;
        --bg-gray: #111827;
        --border-color: #374151;
    }
    
    body {
        background-color: #111827;
        color: #f9fafb;
    }
    
    .header {
        background-color: rgba(31, 41, 55, 0.95);
        border-bottom-color: #374151;
    }
    
    .nav-menu {
        background: #1f2937;
        border-top-color: #374151;
    }
    
    .hero {
        background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    }
    
    .pricing-card,
    .testimonial {
        background: #1f2937;
        border: 1px solid #374151;
    }
    
    .phone-mockup {
        background: #1f2937;
        border-color: #4b5563;
    }
}

/* Print Styles */
@media print {
    .header,
    .nav-toggle,
    .btn,
    .final-cta {
        display: none !important;
    }
    
    .hero {
        padding: 20px 0;
        background: none !important;
    }
    
    .phone-mockup {
        display: none;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .pricing-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #000;
    }
}