/* ========================================
   Rfsmartlock - Main Stylesheet
   Modern Responsive Redesign
   ======================================== */

/* CSS Variables - Theme */
:root {
  /* Colors */
  --color-primary: #3399CC;
  --color-primary-dark: #003366;
  --color-primary-light: #5BB3D6;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F6F6F6;
  --color-border: #EEEEEE;
  --color-text: #666666;
  --color-text-dark: #333333;
  --color-link: #3399CC;
  --color-link-hover: #003366;

  /* Typography */
  --font-family: Arial, Helvetica, sans-serif;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Layout */
  --container-max: 1200px;
  --header-height: 137px;
  --nav-height: 55px;

  /* Effects */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
  --transition: all 0.3s ease;

  /* Temporary Hidden Elements (set to 'none' to hide, 'block'/'flex' to show) */
  --hide-reseller-login: none;
  --hide-feedback: none;
  --hide-quicklinks: none;
  --hide-skype: none;
  --hide-header-icon-lock: none;
}

/* Hidden utility class */
.hidden {
  display: none !important;
}

/* Conditional visibility using CSS variables */
.reseller-login { display: var(--hide-reseller-login); }
.quick-links-section { display: var(--hide-quicklinks); }
.skype-icon { display: var(--hide-skype); }
.header-icon-lock { display: var(--hide-header-icon-lock); }

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

html {
  font-size: var(--font-size-base);
  line-height: 1.6;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
}

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

a {
  color: var(--color-link);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* Utility Classes */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ========================================
   HEADER STYLES
   ======================================== */

.site-header {
  background-color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  gap: var(--space-md);
}

.logo img {
  width: 200px;
  height: auto;
}

.header-tools {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
}

.header-tools a {
  color: #FFFFFF;
  white-space: nowrap;
}

.header-tools .divider {
  color: rgba(255,255,255,0.5);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-primary);
  transition: var(--transition);
}

.menu-toggle.is-active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.is-active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Main Navigation */
.main-nav {
  background-color: #006699;
}

.nav-list {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
}

.nav-list > li > a {
  display: block;
  padding: var(--space-md) var(--space-sm);
  color: #FFFFFF;
  font-size: var(--font-size-lg);
  font-weight: bold;
  text-decoration: none;
}

.nav-list > li > a:hover {
  color: #FFFF99;
  text-decoration: none;
}

/* Dropdown */
.has-dropdown {
  position: relative;
}

.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  z-index: 100;
}

.submenu.is-open {
  display: block;
}

.submenu li a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text);
  font-size: var(--font-size-base);
  border-bottom: 1px solid var(--color-border);
}

.submenu li a:hover {
  background-color: var(--color-bg-alt);
  color: var(--color-primary);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .header-tools {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-bg);
    box-shadow: var(--shadow-md);
    z-index: 99;
  }

  .main-nav.is-open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: var(--space-md);
  }

  .nav-list > li > a {
    color: var(--color-text-dark);
    padding: var(--space-sm) var(--space-md);
  }

  .has-dropdown .submenu {
    position: static;
    box-shadow: none;
    border: none;
    background-color: var(--color-bg-alt);
  }

  .has-dropdown .submenu.is-open {
    display: block;
  }

  .submenu li a {
    padding-left: var(--space-xl);
  }
}

/* ========================================
   HERO CAROUSEL
   ======================================== */

.hero-carousel {
  position: relative;
  width: 100%;
  height: 250px;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.carousel-slides {
  position: relative;
  width: 100%;
  height: 100%;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.carousel-slide.is-active {
  opacity: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-prev,
.carousel-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  background-color: rgba(0,0,0,0.5);
  color: #FFFFFF;
  font-size: 24px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.carousel-prev {
  left: var(--space-md);
}

.carousel-next {
  right: var(--space-md);
}

.carousel-prev:hover,
.carousel-next:hover {
  background-color: var(--color-primary);
}

.carousel-dots {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-sm);
}

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

.carousel-dot.is-active {
  background-color: var(--color-primary);
}

@media (max-width: 768px) {
  .hero-carousel {
    height: 200px;
  }

  .carousel-prev,
  .carousel-next {
    width: 30px;
    height: 30px;
    font-size: 18px;
  }
}

/* ========================================
   QUICK LINKS
   ======================================== */

.quick-links {
  padding: var(--space-xl) 0;
  background-color: var(--color-bg-alt);
}

.quick-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.quick-link-card {
  display: block;
  text-align: center;
  transition: var(--transition);
}

.quick-link-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.quick-link-card img {
  width: 300px;
  height: 56px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .quick-links-grid {
    grid-template-columns: 1fr;
  }

  .quick-link-card img {
    width: 100%;
    max-width: 300px;
  }
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
  padding: var(--space-xl) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: var(--space-xl);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
}

.section-header h2 {
  font-size: var(--font-size-2xl);
  margin: 0;
}

.section-header h3 {
  font-size: var(--font-size-xl);
  margin: 0;
}

.more-link {
  color: var(--color-primary);
  font-size: var(--font-size-sm);
}

.section-body p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.section-body h1 {
  font-size: var(--font-size-2xl);
  margin: var(--space-lg) 0;
}

.product-image {
  text-align: center;
  margin-top: var(--space-lg);
}

.product-image img {
  max-width: 400px;
  margin: 0 auto;
}

.bluefont {
  color: var(--color-primary);
}

.titlefont {
  color: var(--color-primary);
  font-weight: bold;
}

/* News Section */
.news-section {
  background-color: var(--color-bg-alt);
  padding: var(--space-md);
}

.news-list {
  list-style: none;
}

.news-list li {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.news-list li:last-child {
  border-bottom: none;
}

.news-list a {
  display: block;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.news-list a:hover {
  color: var(--color-primary);
}

.news-date {
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

@media (max-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   FOOTER
   ======================================== */

.site-footer {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.footer-links a {
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

.footer-social {
  text-align: center;
}

.footer-copyright {
  text-align: right;
}

.footer-copyright p {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.social-icons {
  margin-top: var(--space-sm);
}

.social-icons img {
  width: 24px;
  height: 24px;
  display: inline-block;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .footer-copyright {
    text-align: center;
  }
}

/* ========================================
   PAGE BANNER & BREADCRUMB
   ======================================== */

.page-banner {
  background-color: var(--color-bg-alt);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb {
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.breadcrumb a {
  color: var(--color-primary);
}

.breadcrumb strong {
  color: var(--color-text-dark);
}

/* ========================================
   PAGE TITLE
   ======================================== */

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: bold;
  color: var(--color-primary);
  margin: var(--space-lg) 0;
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
}

/* ========================================
   PRODUCT TABLE
   ======================================== */

.product-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-lg);
}

.product-table-header {
  display: grid;
  grid-template-columns: 15% 18% 1fr 18%;
  gap: var(--space-md);
  padding: var(--space-md);
  background-color: #F1E7D6;
  font-weight: bold;
  color: var(--color-text-dark);
}

.product-table-row {
  display: grid;
  grid-template-columns: 15% 18% 1fr 18%;
  gap: var(--space-md);
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  align-items: center;
}

.product-table-row:hover {
  background-color: var(--color-bg-alt);
}

.cell-image img {
  width: 60px;
  height: 100px;
  object-fit: cover;
}

.cell-name {
  font-size: var(--font-size-lg);
  color: #666;
}

.cell-features {
  color: var(--color-text);
}

.cell-date {
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
  .product-table-header {
    display: none;
  }

  .product-table-row {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .cell-image {
    text-align: center;
  }

  .cell-image img {
    width: 80px;
    height: 120px;
    margin: 0 auto;
  }

  .cell-name {
    text-align: center;
    font-weight: bold;
  }

  .cell-features {
    text-align: center;
    font-size: var(--font-size-sm);
  }

  .cell-date {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text);
  }
}

/* ========================================
   PAGINATION
   ======================================== */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) 0;
}

.pagination a,
.pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  transition: var(--transition);
}

.pagination a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
}

.pagination .current {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: #FFFFFF;
  font-weight: bold;
}

.pagination .disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.page-info {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  margin-right: var(--space-md);
}

/* ========================================
   CONTENT BLOCKS
   ======================================== */

.content-block {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.content-block h2,
.content-block h3 {
  margin-bottom: var(--space-md);
}

.content-block p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.content-block ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.content-block li {
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

/* News List Page */
.news-list-page {
  margin-top: var(--space-lg);
}

.news-item {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.news-item:last-child {
  border-bottom: none;
}

.news-item h3 {
  margin-bottom: var(--space-sm);
}

.news-item h3 a {
  color: var(--color-primary);
}

.news-item h3 a:hover {
  color: var(--color-primary-dark);
}

.news-item p {
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

/* Product Showcase */
.product-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.showcase-item {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-bg-alt);
  border-radius: 8px;
}

.showcase-item img {
  max-width: 300px;
  margin: 0 auto var(--space-md);
}

.showcase-item h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

/* ========================================
   FORM STYLES
   ======================================== */

.form-container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--space-lg);
  background-color: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: bold;
  color: var(--color-text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(51, 153, 204, 0.2);
}

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

.form-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.btn-primary,
.btn-secondary {
  padding: var(--space-sm) var(--space-xl);
  border-radius: 4px;
  font-size: var(--font-size-base);
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border: none;
}

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

.btn-secondary {
  background-color: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-bg-alt);
}

@media (max-width: 768px) {
  .form-container {
    padding: var(--space-md);
  }

  .form-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
}

/* Contact Info */
.contact-info {
  background-color: var(--color-bg-alt);
  padding: var(--space-xl);
  border-radius: 4px;
  margin-top: var(--space-lg);
}

.contact-info h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.contact-info p {
  margin-bottom: var(--space-sm);
  line-height: 1.8;
}

.contact-info strong {
  color: var(--color-text-dark);
}

/* ========================================
   SITE MAP
   ======================================== */

.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.sitemap-column h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-primary);
}

.sitemap-column ul {
  list-style: none;
}

.sitemap-column li {
  margin-bottom: var(--space-sm);
}

.sitemap-column a {
  color: var(--color-text);
}

.sitemap-column a:hover {
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .sitemap-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   NEWS & PRODUCT DETAIL
   ======================================== */

.news-meta {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.news-content p {
  margin-bottom: var(--space-md);
  line-height: 1.8;
}

.back-link {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.back-link a {
  color: var(--color-primary);
  font-weight: bold;
}

/* Product Detail */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.product-image img {
  max-width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.product-info h2 {
  margin-bottom: var(--space-md);
}

.feature-list {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.feature-list li {
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.product-actions {
  margin-top: var(--space-lg);
}

@media (max-width: 768px) {
  .product-detail-grid {
    grid-template-columns: 1fr;
  }
}

/* Product Gallery */
.product-gallery {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.product-gallery img {
  width: 80px;
  height: 100px;
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.product-gallery img:hover {
  border-color: var(--color-primary);
}

/* Product Specifications Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-md) 0;
}

.specs-table tr {
  border-bottom: 1px solid var(--color-border);
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-table th,
.specs-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
}

.specs-table th {
  width: 40%;
  font-weight: bold;
  color: var(--color-text-dark);
  background-color: var(--color-bg-alt);
}

.specs-table td {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .specs-table th,
  .specs-table td {
    display: block;
    width: 100%;
  }

  .specs-table th {
    background-color: transparent;
    padding-bottom: 0;
  }

  .specs-table td {
    padding-top: 0;
  }
}

/* ========================================
   PRODUCT IMAGE GALLERY
   ======================================== */

.product-image {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.product-main-image {
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  cursor: zoom-in;
  display: block;
}

.product-gallery {
  position: absolute;
  top: var(--space-md);
  right: calc(-100px - var(--space-md));
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.product-gallery .gallery-thumb {
  width: 80px;
  height: 100px;
  object-fit: cover;
  border: 2px solid var(--color-border);
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
}

.product-gallery .gallery-thumb:hover {
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.product-gallery .gallery-thumb.is-active {
  border-color: var(--color-primary);
  box-shadow: 0 0 8px rgba(51, 153, 204, 0.5);
}

@media (max-width: 768px) {
  .product-gallery {
    position: relative;
    top: auto;
    right: auto;
    flex-direction: row;
    flex-wrap: wrap;
    margin-top: var(--space-md);
  }

  .product-gallery .gallery-thumb {
    width: 70px;
    height: 90px;
  }
}

/* Lightbox Modal */
.lightbox-modal {
  display: none;
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.lightbox-modal.is-open {
  display: flex;
}

.lightbox-modal img {
  max-width: 90%;
  max-height: 80vh;
  border: 4px solid #fff;
  border-radius: 8px;
}

.lightbox-modal .lightbox-caption {
  color: #fff;
  margin-top: var(--space-md);
  font-size: var(--font-size-lg);
}

.lightbox-modal .lightbox-close {
  position: absolute;
  top: 20px;
  right: 30px;
  color: #fff;
  font-size: 40px;
  font-weight: bold;
  cursor: pointer;
  opacity: 0.8;
  transition: opacity 0.3s;
}

.lightbox-modal .lightbox-close:hover {
  opacity: 1;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  font-size: 50px;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.3s;
  padding: 20px;
}

.lightbox-nav:hover {
  opacity: 1;
}

.lightbox-nav.prev {
  left: 20px;
}

.lightbox-nav.next {
  right: 20px;
}

@media (max-width: 768px) {
  .lightbox-modal img {
    max-width: 95%;
  }

  .lightbox-nav {
    font-size: 30px;
    padding: 10px;
  }
}