/* =====================================================
   EXOLUXE™ - RESPONSIVE STYLES
   Mobile-First Approach
   ===================================================== */

/* =====================================================
   LARGE DESKTOP (1400px+)
   ===================================================== */
@media (min-width: 1400px) {
    .container {
        max-width: 1600px;
    }
    
    .hero-content {
        max-width: 1000px;
    }
    
    .section-padding {
        --section-padding: 140px 0;
    }
}

/* =====================================================
   DESKTOP (1200px - 1399px)
   ===================================================== */
@media (max-width: 1399px) {
    .container {
        max-width: 1200px;
    }
    
    .showcase-grid,
    .story-grid {
        gap: 4rem;
    }
    
    .timeline-item:nth-child(odd) .timeline-content {
        padding-right: 2rem;
    }
    
    .timeline-item:nth-child(even) .timeline-content {
        padding-left: 2rem;
    }
}

/* =====================================================
   LAPTOP (992px - 1199px)
   ===================================================== */
@media (max-width: 1199px) {
    .container {
        padding: 0 1.5rem;
    }
    
    .nav-container {
        padding: 1rem 1.5rem;
    }
    
    .nav-list {
        gap: 2rem;
    }
    
    .hero {
        min-height: 700px;
    }
    
    .section-padding {
        --section-padding: 100px 0;
    }
    
    .showcase-grid,
    .story-grid {
        gap: 3rem;
    }
    
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: 2rem;
    }
    
    .knowledge-card.featured {
        grid-column: span 1;
    }
}

/* =====================================================
   TABLET (768px - 991px)
   ===================================================== */
@media (max-width: 991px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--soft-white);
        transition: var(--transition-medium);
        padding: 2rem;
        box-shadow: var(--shadow-medium);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
    
    .nav-link {
        font-size: 1.1rem;
        padding: 0.5rem 0;
        border-bottom: 1px solid rgba(200, 16, 46, 0.1);
        width: 100%;
    }
    
    .dropdown-content {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--warm-grey);
        margin-top: 1rem;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero {
        min-height: 600px;
        align-items: center;
    }
    
    .hero-content {
        margin-bottom: 4rem;
    }
    
    .hero-testimonials {
        bottom: 40px;
    }
    
    .hero-testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1.5rem;
    }
    
    .hero-testimonial {
        padding: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .intro-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .brand-intro {
        padding: 80px 0;
        min-height: 70vh;
        background-attachment: scroll;
    }
    
    .showcase-grid,
    .story-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .showcase-content,
    .story-content {
        order: 2;
        padding: 2rem 1rem;
    }
    
    .showcase-image,
    .story-visual {
        order: 1;
    }
    
    .product-video {
        max-height: 400px;
    }
    
    .product-details {
        margin: 2rem 0;
    }
    
    .product-feature {
        margin-bottom: 2rem;
        gap: 1.25rem;
    }
    
    .feature-content h3 {
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }
    
    .feature-content p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .product-action {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
        margin-top: 2rem;
    }
    
    .story-stats {
        justify-content: center;
        gap: 2rem;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 80px;
    }
    
    .timeline-item .timeline-content {
        text-align: left !important;
        padding-left: 2rem !important;
        padding-right: 0 !important;
    }
    
    .timeline-marker {
        position: absolute;
        left: 0;
        width: 80px;
        height: 80px;
    }
    
    .timeline-number {
        font-size: 1.5rem;
    }
    
    .science-grid,
    .knowledge-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-features {
        gap: 2rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-brand {
        grid-column: span 2;
        text-align: center;
        margin-bottom: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
}

/* =====================================================
   MOBILE LARGE (576px - 767px)
   ===================================================== */
@media (max-width: 767px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 1rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .nav-icons {
        gap: 1rem;
    }
    
    .hero {
        min-height: 500px;
        padding: 0 1rem;
        align-items: center;
    }
    
    .hero-content {
        padding: 0 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-testimonials {
        bottom: 20px;
    }
    
    .hero-testimonials-grid {
        padding: 0 1rem;
        gap: 1rem;
    }
    
    .hero-testimonial {
        padding: 1rem;
    }
    
    .hero-testimonial .testimonial-quote p {
        font-size: 0.9rem;
    }
    
    .section-padding {
        --section-padding: 80px 0;
    }
    
    .section-header {
        margin-bottom: 3rem;
    }
    
    .section-title {
        font-size: clamp(2rem, 6vw, 2.5rem);
    }
    
    .showcase-content {
        padding: 1.5rem 0.5rem;
    }
    
    .product-details {
        margin: 1.5rem 0;
    }
    
    .product-feature {
        gap: 1rem;
        margin-bottom: 1.5rem;
        flex-direction: row;
        align-items: flex-start;
    }
    
    .feature-content h3 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    
    .feature-content p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .product-action {
        margin-top: 1.5rem;
        flex-direction: column;
        align-items: center;
        gap: 1.25rem;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-icon i {
        font-size: 1.2rem;
    }
    
    .science-card,
    .knowledge-card {
        padding: 2rem 1.5rem;
    }
    
    .card-image {
        height: 200px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-marker {
        width: 60px;
        height: 60px;
    }
    
    .timeline-number {
        font-size: 1.2rem;
    }
    
    .timeline-unit {
        font-size: 0.7rem;
    }
    
    .testimonial-card {
        padding: 2rem 1.5rem;
    }
    
    .cta-features {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        grid-column: span 1;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* =====================================================
   MOBILE MEDIUM (480px - 575px)
   ===================================================== */
@media (max-width: 575px) {
    .btn {
        padding: 1rem 2rem;
        min-width: 160px;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 1.1rem 2.5rem;
        min-width: 180px;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .intro-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .brand-intro {
        padding: 60px 0;
        min-height: 60vh;
        background-attachment: scroll;
        background-position: center top;
    }
    
    .product-action .btn {
        width: 100%;
    }
    
    .showcase-content {
        padding: 1rem 0;
    }
    
    .product-details {
        margin: 1rem 0;
    }
    
    .product-feature {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
        margin-bottom: 1.5rem;
        padding: 1.5rem;
        background: rgba(255, 255, 255, 0.8);
        border-radius: 12px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }
    
    .feature-content h3 {
        font-size: 1.1rem;
        margin-bottom: 0.5rem;
    }
    
    .feature-content p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
    
    .product-action {
        margin-top: 1rem;
        gap: 1rem;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 50px;
    }
    
    .timeline-marker {
        width: 50px;
        height: 50px;
        left: -5px;
    }
    
    .timeline-number {
        font-size: 1rem;
    }
    
    .timeline-content {
        padding-left: 1.5rem !important;
    }
    
    .story-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
}

/* =====================================================
   MOBILE SMALL (320px - 479px)
   ===================================================== */
@media (max-width: 479px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .nav-container {
        padding: 0.75rem;
    }
    
    .logo {
        font-size: 1.3rem;
    }
    
    .hero {
        min-height: 450px;
        align-items: center;
    }
    
    .section-padding {
        --section-padding: 60px 0;
    }
    
    .section-title {
        font-size: clamp(1.8rem, 8vw, 2.2rem);
    }
    
    .showcase-content,
    .story-content {
        padding: 1rem 0;
    }
    
    .product-details {
        margin: 0.75rem 0;
    }
    
    .product-feature {
        margin-bottom: 1rem;
        padding: 1rem;
        background: rgba(255, 255, 255, 0.9);
        border-radius: 10px;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }
    
    .feature-content h3 {
        font-size: 1rem;
        margin-bottom: 0.4rem;
    }
    
    .feature-content p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .product-action {
        margin-top: 0.75rem;
        gap: 0.75rem;
    }
    
    .product-price {
        flex-direction: column;
        align-items: center;
        gap: 0.25rem;
        text-align: center;
    }
    
    .price {
        font-size: 2rem;
    }
    
    .science-card,
    .knowledge-card,
    .testimonial-card {
        padding: 1.5rem 1rem;
    }
    
    .product-video {
        max-height: 300px;
    }
    
    .card-content {
        padding: 1.5rem;
    }
    
    .testimonial-card::before {
        font-size: 3rem;
        top: -5px;
    }
    
    .cta-content {
        padding: 0 0.5rem;
    }
    
    .footer-grid {
        gap: 1.5rem;
    }
    
    .footer-bottom {
        padding-top: 1.5rem;
    }
    
    .legal-links {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
}

/* =====================================================
   NAVIGATION RESPONSIVE ANIMATIONS
   ===================================================== */
.menu-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* =====================================================
   LANDSCAPE MOBILE ADJUSTMENTS
   ===================================================== */
@media (max-height: 500px) and (orientation: landscape) {
    .hero {
        min-height: 400px;
    }
    
    .hero-content {
        padding: 1rem;
    }
    
    .hero-title {
        margin-bottom: 1rem;
    }
    
    .hero-description {
        margin-bottom: 1.5rem;
    }
    
    .scroll-indicator {
        display: none;
    }
}

/* =====================================================
   HIGH DENSITY DISPLAYS
   ===================================================== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .hero-video {
        transform: scale(1.01);
    }
    
    .product-image,
    .product-video,
    .science-visual img,
    .card-image img,
    .story-visual img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* =====================================================
   ACCESSIBILITY IMPROVEMENTS
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero-video {
        animation-play-state: paused;
    }
    
    .scroll-arrow {
        animation: none;
    }
}

/* =====================================================
   PRINT STYLES
   ===================================================== */
@media print {
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .navbar,
    .hero-video-container,
    .hero-buttons,
    .cta-section,
    .footer {
        display: none !important;
    }
    
    .hero {
        height: auto;
        padding: 2rem 0;
    }
    
    .container {
        max-width: none;
        padding: 0;
    }
    
    .section-padding {
        --section-padding: 2rem 0;
    }
    
    a::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
    
    .btn {
        border: 2px solid black;
        padding: 0.5rem 1rem;
    }
}

/* =====================================================
   FOCUS STATES FOR ACCESSIBILITY
   ===================================================== */
.btn:focus,
.nav-link:focus,
.card-link:focus,
.social-link:focus {
    outline: 2px solid var(--primary-red);
    outline-offset: 2px;
}

.search-icon:focus,
.cart-icon:focus,
.menu-toggle:focus {
    outline: 2px solid var(--primary-red);
    outline-offset: 2px;
    border-radius: 4px;
}

/* =====================================================
   HOVER STATES FOR TOUCH DEVICES
   ===================================================== */
@media (hover: none) and (pointer: coarse) {
    .btn:hover,
    .nav-link:hover,
    .science-card:hover,
    .knowledge-card:hover {
        transform: none;
    }
    
    .btn:active {
        transform: scale(0.98);
    }
    
    .science-card:active,
    .knowledge-card:active {
        transform: scale(0.98);
    }
}

/* =====================================================
   BIOSIGNAL PAGE RESPONSIVE
   ===================================================== */

@media (max-width: 991px) {
    .content-grid,
    .breakthrough-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .breakthrough-stats {
        justify-content: center;
        gap: 2rem;
    }
}

@media (max-width: 767px) {
    .biosignal-hero {
        padding: calc(var(--section-padding) + 2rem) 0 var(--section-padding);
    }
    
    .content-highlights {
        gap: 1rem;
    }
    
    .highlight-item {
        padding: 0.8rem;
    }
    
    .works-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .works-card {
        padding: 2rem;
    }
    
    .breakthrough-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .breakthrough-stats .stat-number {
        font-size: 2rem;
    }
    
    .comparison-table {
        margin: 0 -1rem;
    }
    
    .comparison-grid th,
    .comparison-grid td {
        padding: 1rem 0.5rem;
        font-size: 0.9rem;
    }
    
    .comparison-grid th {
        font-size: 1rem;
    }
}