/**
 * Risurgis Website Styles
 * 
 * Production-ready stylesheet with smooth gradient background,
 * dropdown navigation support, and responsive design.
 * 
 * @version 3.0.0
 */

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
    /* Primary Colors */
    --color-primary: #1a4548;
    --color-primary-dark: #0d2426;
    --color-foreground: #000000;
    --color-background: #ffffff;
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray: #abb8c3;
    --color-dark-bg: #1A282E;
    
    /* Gradient Colors */
    --gradient-start: #1a4548;
    --gradient-mid: #0f2d30;
    --gradient-end: #000000;
    
    /* Typography */
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Roboto Mono', monospace;
    --font-serif: 'Source Serif Pro', serif;
    
    /* Spacing Scale */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    /* Container Settings */
    --container-max: 1280px;
    --container-padding: 24px;
    
    /* Border Radius */
    --border-radius: 30px;
    --border-radius-sm: 20px;
    --border-radius-xs: 10px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Dropdown specific */
    --dropdown-bg: rgba(26, 40, 46, 0.98);
    --dropdown-hover-bg: rgba(255, 255, 255, 0.1);
    --dropdown-border: rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--color-white);
    background: linear-gradient(
        180deg,
        var(--gradient-start) 0%,
        var(--gradient-mid) 30%,
        var(--gradient-end) 100%
    );
    background-attachment: fixed;
    min-height: 100vh;
    background-color: var(--color-black);
}

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

a {
    color: var(--color-white);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.25ch;
    transition: var(--transition-fast);
}

a:hover,
a:focus {
    text-decoration-style: dashed;
    opacity: 0.9;
}

/* ==========================================================================
   Accessibility Features
   ========================================================================== */

.skip-link {
    position: absolute;
    top: -100px;
    left: 5px;
    background: var(--color-white);
    color: var(--color-black);
    padding: 15px 23px;
    z-index: 100000;
    text-decoration: none;
    border-radius: var(--border-radius-xs);
    font-weight: 600;
}

.skip-link:focus {
    top: 5px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   Header Component
   ========================================================================== */

.site-header {
    position: relative;
    background: transparent;
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
}

.header-inner {
    position: relative;
    padding: var(--spacing-lg) 0;
    min-height: 200px;
    display: flex;
    flex-direction: column;
}

.header-bg-image {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    max-width: 600px;
    height: auto;
    opacity: 0.35;
    pointer-events: none;
    z-index: 0;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: var(--spacing-md) 0;
}

.logo-wrapper {
    flex-shrink: 0;
}

.logo-link {
    display: inline-block;
    text-decoration: none;
}

.logo-link:hover {
    opacity: 0.9;
}

.logo-image {
    height: auto;
    max-width: 250px;
    width: 100%;
}

/* ==========================================================================
   Navigation with Dropdown Support
   ========================================================================== */

.main-nav {
    flex-grow: 1;
    display: flex;
    justify-content: flex-end;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
    flex-wrap: nowrap;
    align-items: center;
}

.nav-item {
    white-space: nowrap;
    position: relative;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    transition: var(--transition-fast);
    border-radius: var(--border-radius-xs);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
}

.nav-link:hover,
.nav-link:focus {
    text-decoration: none;
    background: rgba(255, 255, 255, 0.1);
}

.nav-link.active {
    text-decoration: underline;
    font-weight: 500;
}

/* Dropdown Arrow Icon */
.dropdown-arrow {
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.nav-dropdown-toggle[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
}

/* ==========================================================================
   Dropdown Menu Styles
   ========================================================================== */

.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 220px;
    background: var(--dropdown-bg);
    border: 1px solid var(--dropdown-border);
    border-radius: var(--border-radius-xs);
    padding: var(--spacing-xs) 0;
    list-style: none;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateX(-50%) translateY(10px);
    transition: opacity var(--transition-fast), 
                transform var(--transition-fast),
                visibility var(--transition-fast);
    z-index: 1000;
    margin-top: 4px;
}

/* Show dropdown on hover (desktop) and when toggled */
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown-menu.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Keep dropdown open when focused within */
.nav-dropdown:focus-within .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-md);
    color: var(--color-white);
    text-decoration: none;
    transition: background var(--transition-fast);
    font-size: 0.95rem;
}

.nav-dropdown-link:hover,
.nav-dropdown-link:focus {
    background: var(--dropdown-hover-bg);
    text-decoration: none;
    opacity: 1;
}

.nav-dropdown-link.active {
    background: var(--dropdown-hover-bg);
    font-weight: 500;
}

/* Empty dropdown state */
.nav-dropdown-empty {
    padding: var(--spacing-xs) var(--spacing-md);
}

.nav-dropdown-placeholder {
    color: var(--color-gray);
    font-size: 0.9rem;
    font-style: italic;
}

/* ==========================================================================
   Mobile Menu Toggle
   ========================================================================== */

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-white);
    transition: var(--transition-fast);
    border-radius: 1px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */

.main-content {
    min-height: 50vh;
    background: transparent;
}

/* ==========================================================================
   Hero Section (Home Page)
   ========================================================================== */

.hero-section {
    background-image: url('/media/home/surgeon-welder.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl) var(--container-padding);
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    pointer-events: none;
}

.hero-section.lazy-bg {
    background-image: none;
    background-color: rgba(26, 69, 72, 0.3);
}

.hero-section.lazy-bg.loaded {
    background-image: url('/media/home/surgeon-welder.png');
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.15;
    text-transform: uppercase;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   Feature Sections
   ========================================================================== */

.feature-section {
    padding: var(--spacing-xxl) var(--container-padding);
    background: transparent;
}

.feature-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

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

.feature-grid-reverse {
    direction: rtl;
}

.feature-grid-reverse > * {
    direction: ltr;
}

.feature-text {
    text-align: center;
}

.feature-title {
    font-family: var(--font-primary);
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 400;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.feature-description {
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-white);
    line-height: 1.6;
    opacity: 0.9;
}

.feature-media {
    display: flex;
    justify-content: center;
}

.feature-image {
    max-width: 100%;
    height: auto;
}

.feature-image.rounded {
    border-radius: var(--border-radius);
}

.feature-image.shadow {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.feature-image.large {
    max-width: 500px;
}

.video-wrapper {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.feature-video {
    width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
    padding: var(--spacing-xxl) var(--container-padding);
    text-align: center;
    background: transparent;
}

.cta-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 400;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-family: var(--font-primary);
    font-size: 1.1rem;
    color: var(--color-white);
    opacity: 0.85;
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ==========================================================================
   Button Styles
   ========================================================================== */

.btn {
    display: inline-block;
    padding: calc(0.667em + 2px) calc(1.333em + 2px);
    font-family: var(--font-mono);
    font-size: inherit;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: rgba(50, 55, 60, 0.9);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: rgba(60, 65, 70, 0.95);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Content Section
   ========================================================================== */

.content-section {
    padding: var(--spacing-xl) var(--container-padding);
    background: transparent;
}

.content-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.intro-text {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-white);
}

.intro-text.centered {
    text-align: center;
}

.intro-text p {
    margin-bottom: var(--spacing-md);
}

.intro-text a {
    color: var(--color-white);
    font-weight: 500;
}

/* ==========================================================================
   Section Utilities
   ========================================================================== */

.section-spacer {
    height: 50px;
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 400;
    margin-bottom: var(--spacing-xl);
    color: var(--color-white);
}

.section-title.centered {
    text-align: center;
}

.section-title.light {
    color: var(--color-white);
}

/* ==========================================================================
   Team Section
   ========================================================================== */

.team-section {
    padding: var(--spacing-xl) var(--container-padding);
    background: transparent;
}

.team-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.team-member {
    text-align: center;
}

.team-member a {
    text-decoration: none;
}

.team-photo {
    width: 100%;
    max-width: 200px;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 auto var(--spacing-sm);
    border: 3px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-normal);
}

.team-member a:hover .team-photo {
    border-color: rgba(255, 255, 255, 0.5);
    transform: scale(1.05);
}

.team-name {
    font-size: 1rem;
    color: var(--color-white);
    font-weight: 500;
}

/* ==========================================================================
   Collaborators Section
   ========================================================================== */

.collaborators-section {
    padding: var(--spacing-xl) var(--container-padding);
    background: transparent;
}

.collaborators-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.collaborators-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    align-items: center;
    justify-items: center;
}

.collaborator-logo {
    transition: var(--transition-normal);
}

.collaborator-logo:hover {
    transform: scale(1.05);
}

.collaborator-logo img {
    max-width: 200px;
    height: auto;
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.collaborator-logo a {
    text-decoration: none;
}

/* ==========================================================================
   Design Page
   ========================================================================== */

.design-hero {
    padding: var(--spacing-xxl) var(--container-padding);
    background: transparent;
}

.design-hero-container {
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    gap: var(--spacing-xxl);
    align-items: center;
}

.design-images {
    display: flex;
    gap: var(--spacing-lg);
    flex-shrink: 0;
}

.design-image {
    height: 55vh;
    width: auto;
    object-fit: cover;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.design-image.rounded {
    border-radius: var(--border-radius);
}

.design-hero-text {
    flex-grow: 1;
}

.design-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.design-title-sub {
    font-size: 0.7em;
    opacity: 0.8;
    font-weight: 300;
}

.design-subtitle {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    color: var(--color-white);
    opacity: 0.9;
}

/* Products Section */
.products-section {
    background-color: rgba(26, 40, 46, 0.5);
    padding: var(--spacing-xxl) var(--container-padding);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.products-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.products-grid {
    display: flex;
    gap: var(--spacing-lg);
}

.product-showcase {
    flex: 0 0 50%;
}

.product-image {
    width: 100%;
    height: auto;
}

.product-options {
    flex: 1;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.product-option {
    flex: 0 0 calc(50% - var(--spacing-lg) / 2);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-xs);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.option-title {
    font-family: var(--font-primary);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.option-description {
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--color-white);
    line-height: 1.5;
    opacity: 0.85;
}

.option-description em {
    font-style: italic;
    opacity: 0.7;
}

/* ==========================================================================
   Developer Page
   ========================================================================== */

.developer-section {
    padding: var(--spacing-xxl) var(--container-padding);
    background: transparent;
}

.developer-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.developer-grid {
    display: flex;
    gap: var(--spacing-xxl);
    align-items: flex-start;
}

.developer-photo-wrapper {
    flex-shrink: 0;
}

.developer-photo {
    width: 300px;
    height: 300px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.developer-content {
    flex-grow: 1;
}

.developer-name {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.developer-bio {
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.developer-bio p {
    margin-bottom: var(--spacing-md);
}

/* ==========================================================================
   Social Links
   ========================================================================== */

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition-fast);
}

.social-link svg {
    width: 22px;
    height: 22px;
    fill: var(--color-white);
}

.social-link.linkedin {
    background-color: #0077b5;
}

.social-link.scholar {
    background-color: #4285f4;
}

.social-link.instagram {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.social-link:hover,
.social-link:focus {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ==========================================================================
   Error Pages
   ========================================================================== */

.error-section {
    padding: var(--spacing-xxl) var(--container-padding);
    text-align: center;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.error-container {
    max-width: 600px;
}

.error-title {
    font-size: clamp(4rem, 15vw, 8rem);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.error-subtitle {
    font-size: clamp(1.5rem, 4vw, 2rem);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    font-weight: 400;
}

.error-message {
    font-size: 1.125rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    opacity: 0.85;
}

.error-details {
    margin-top: var(--spacing-lg);
    text-align: left;
}

.error-details summary {
    cursor: pointer;
    color: var(--color-gray);
    padding: var(--spacing-xs);
}

.error-details pre {
    background: rgba(0, 0, 0, 0.4);
    padding: var(--spacing-md);
    overflow-x: auto;
    font-size: 0.875rem;
    color: var(--color-white);
    margin-top: var(--spacing-sm);
    border-radius: var(--border-radius-xs);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background-color: rgba(0, 0, 0, 0.3);
    color: var(--color-white);
    padding: var(--spacing-xxl) var(--container-padding);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
}

.footer-column {
    flex: 1;
    text-align: center;
}

.footer-address {
    font-size: 1rem;
    letter-spacing: -0.5px;
    line-height: 1.6;
    opacity: 0.85;
}

.footer-logo-col {
    display: flex;
    justify-content: center;
}

.footer-logo {
    max-width: 280px;
    height: auto;
    opacity: 0.9;
}

.footer-contact-col {
    display: flex;
    justify-content: center;
}

.footer-contacts {
    max-width: 250px;
    height: auto;
    opacity: 0.85;
}

.footer-column a {
    text-decoration: none;
}

.footer-column a:hover {
    opacity: 1;
}

/* ==========================================================================
   Responsive Design - Tablet
   ========================================================================== */

@media (max-width: 1024px) {
    .header-inner {
        min-height: 150px;
    }
    
    .header-bg-image {
        max-width: 450px;
        opacity: 0.12;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .feature-grid-reverse {
        direction: ltr;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .collaborators-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .design-hero-container {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .design-images {
        justify-content: center;
    }
    
    .design-image {
        height: 370px;
    }
    
    .products-grid {
        flex-direction: column-reverse;
    }
    
    .product-showcase {
        flex: 1;
    }
    
    .developer-grid {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .developer-photo {
        width: 250px;
        height: 250px;
    }
    
    .social-links {
        justify-content: center;
    }
}

/* ==========================================================================
   Responsive Design - Mobile
   ========================================================================== */

@media (max-width: 767px) {
    :root {
        --container-padding: 16px;
    }
    
    .header-inner {
        min-height: 120px;
    }
    
    .header-bg-image {
        max-width: 300px;
        opacity: 0.35;
    }
    
    .logo-image {
        max-width: 180px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end));
        padding: var(--spacing-xxl) var(--spacing-lg);
        transition: right var(--transition-normal);
        z-index: 1000;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.3);
        overflow-y: auto;
    }
    
    .main-nav.is-open {
        right: 0;
    }
    
    .nav-list {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .nav-link {
        font-size: 1.125rem;
        padding: var(--spacing-sm);
        width: 100%;
        justify-content: space-between;
    }
    
    /* Mobile dropdown adjustments */
    .nav-dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-normal), 
                    visibility var(--transition-normal);
        box-shadow: none;
        border: none;
        background: rgba(0, 0, 0, 0.2);
        border-radius: var(--border-radius-xs);
        margin-top: var(--spacing-xs);
    }
    
    .nav-dropdown-menu.is-open {
        visibility: visible;
        max-height: 300px;
    }
    
    .nav-dropdown:hover .nav-dropdown-menu {
        opacity: 1;
        visibility: hidden;
        max-height: 0;
    }
    
    .nav-dropdown-link {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    body.nav-open {
        overflow: hidden;
    }
    
    body.nav-open::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
    
    .hero-title {
        font-size: clamp(1.2rem, 5vw, 1.8rem);
    }
    
    .feature-title {
        font-size: 1.5rem;
    }
    
    .team-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-md);
    }
    
    .team-photo {
        max-width: 140px;
    }
    
    .design-images {
        flex-direction: row;
        justify-content: space-between;
        gap: var(--spacing-sm);
    }
    
    .design-image {
        width: 48%;
        height: auto;
    }
    
    .product-option {
        flex: 0 0 100%;
    }
    
    .footer-grid {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .footer-logo {
        max-width: 220px;
    }
    
    .footer-contacts {
        max-width: 200px;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    body {
        background: white;
        color: black;
    }
    
    .mobile-menu-toggle,
    .social-links,
    .nav-dropdown-menu {
        display: none;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
}