/* ==========================================================================
   CSS Custom Properties (CSS Variables)
   ========================================================================== */

:root {
  /* Light theme colors */
  --color-bg: #FAFAFA;
  --color-text: #1A1A2E;
  --color-accent: #B8860B;
  --color-accent-hover: #9A7209;
  --color-secondary: #2E5E2E;
  --color-secondary-hover: #234A23;
  --color-card-bg: #FFFFFF;
  --color-card-shadow: rgba(0, 0, 0, 0.1);
  --color-header-bg: #FFFFFF;
  --color-header-border: #E0E0E0;
  --color-footer-bg: #1A1A2E;
  --color-footer-text: #E0E0E0;
  --color-link: #B8860B;
  --color-link-hover: #9A7209;
  --color-burger: #1A1A2E;
  --color-overlay: rgba(0, 0, 0, 0.5);
  --color-btn-text: #FFFFFF;
  --color-section-alt: #F0F0F0;
  --color-input-bg: #FFFFFF;
  --color-input-border: #CCCCCC;
  --color-theme-toggle: #1A1A2E;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-xxl: 48px;
  --spacing-xxxl: 64px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-xxl: 1.5rem;
  --font-size-xxxl: 2rem;
  --font-size-hero: 2.5rem;
  --line-height: 1.6;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 16px;
}

/* Dark theme */
.dark-theme {
  --color-bg: #121212;
  --color-text: #E0E0E0;
  --color-accent: #D4A017;
  --color-accent-hover: #E0B832;
  --color-secondary: #4CAF50;
  --color-secondary-hover: #66BB6A;
  --color-card-bg: #1E1E1E;
  --color-card-shadow: rgba(0, 0, 0, 0.3);
  --color-header-bg: #1E1E1E;
  --color-header-border: #333333;
  --color-footer-bg: #0A0A0A;
  --color-footer-text: #B0B0B0;
  --color-link: #D4A017;
  --color-link-hover: #E0B832;
  --color-burger: #E0E0E0;
  --color-overlay: rgba(0, 0, 0, 0.7);
  --color-btn-text: #121212;
  --color-section-alt: #1A1A1A;
  --color-input-bg: #2A2A2A;
  --color-input-border: #444444;
  --color-theme-toggle: #E0E0E0;
}


/* ==========================================================================
   Reset / Normalize
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

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

ul, ol {
  list-style: none;
}

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}


/* ==========================================================================
   Typography
   ========================================================================== */

h1 {
  font-size: var(--font-size-hero);
}

h2 {
  font-size: var(--font-size-xxxl);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: var(--font-size-xxl);
  margin-bottom: var(--spacing-md);
}

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

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}


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

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
  gap: var(--spacing-lg);
}

/* Logo */
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-shrink: 0;
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
}

.header__logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.header__logo-text:hover {
  color: var(--color-accent);
}

/* Navigation */
.header__nav {
  display: flex;
  align-items: center;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header__nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.header__nav-link:hover,
.header__nav-link--active {
  color: var(--color-accent);
  background-color: rgba(184, 138, 11, 0.1);
}

/* Theme toggle */
.header__theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--color-theme-toggle);
  background-color: transparent;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.header__theme-toggle:hover {
  background-color: rgba(128, 128, 128, 0.15);
}

.header__theme-toggle svg {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-base);
}

.dark-theme .header__theme-toggle .icon-sun {
  display: block;
}

.dark-theme .header__theme-toggle .icon-moon {
  display: none;
}

.header__theme-toggle .icon-sun {
  display: none;
}

.header__theme-toggle .icon-moon {
  display: block;
}

/* Burger menu button */
.header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
  z-index: 1001;
  flex-shrink: 0;
}

.header__burger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-burger);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__burger-line + .header__burger-line {
  margin-top: 6px;
}

/* Burger active state */
.header__burger--active .header__burger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.header__burger--active .header__burger-line:nth-child(2) {
  opacity: 0;
}

.header__burger--active .header__burger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


/* ==========================================================================
   Main content
   ========================================================================== */

.main {
  min-height: calc(100vh - 70px - 200px);
}


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

.footer {
  background-color: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--spacing-xl) 0;
  transition: background-color var(--transition-base);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer__copyright {
  font-size: var(--font-size-sm);
}

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

.footer__email:hover {
  color: var(--color-accent);
}

.footer__back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.footer__back-to-top:hover {
  background-color: var(--color-accent);
  color: var(--color-btn-text);
}

.footer__back-to-top svg {
  width: 16px;
  height: 16px;
}


/* ==========================================================================
   Back to top button (fixed)
   ========================================================================== */

.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-accent);
  color: var(--color-btn-text);
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity var(--transition-base), visibility var(--transition-base),
    transform var(--transition-base), background-color var(--transition-base);
  z-index: 999;
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-accent-hover);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}


/* ==========================================================================
   Section spacing
   ========================================================================== */

.section {
  padding: var(--spacing-xxl) 0;
}

.section--alt {
  background-color: var(--color-section-alt);
  transition: background-color var(--transition-base);
}


/* ==========================================================================
   Button base styles
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast),
    transform var(--transition-fast);
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-btn-text);
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-btn-text);
  transform: translateY(-2px);
}

.btn--secondary {
  background-color: var(--color-secondary);
  color: var(--color-btn-text);
}

.btn--secondary:hover {
  background-color: var(--color-secondary-hover);
  color: var(--color-btn-text);
  transform: translateY(-2px);
}

.btn--outline {
  background-color: transparent;
  border: 2px solid var(--color-text);
  color: var(--color-text);
}

.btn--outline:hover {
  background-color: var(--color-text);
  color: var(--color-bg);
}

/* White outline variant (for hero on dark bg) */
.btn--outline-white {
  border-color: #FFFFFF;
  color: #FFFFFF;
}

.btn--outline-white:hover {
  background-color: #FFFFFF;
  color: var(--color-text);
}


/* ==========================================================================
   Hero Section (for index page)
   ========================================================================== */

.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: var(--spacing-xxxl) var(--container-padding);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(26, 26, 46, 0.85) 0%,
    rgba(26, 26, 46, 0.6) 100%
  );
  z-index: 1;
}

.dark-theme .hero__overlay {
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.9) 0%,
    rgba(0, 0, 0, 0.7) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero__title {
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  color: #FFFFFF;
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
}

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


/* ==========================================================================
   Section title / subtitle
   ========================================================================== */

.section__title {
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.section__subtitle {
  text-align: center;
  font-size: var(--font-size-lg);
  opacity: 0.8;
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}


/* ==========================================================================
   Overview Cards Grid (index page)
   ========================================================================== */

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

/* 5th card spans 2 columns in a 3-column grid on desktop */
.overview-card--wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--spacing-md);
  align-items: center;
}

.overview-card--wide .overview-card__icon {
  grid-row: 1 / 3;
  margin-bottom: 0;
}

.overview-card--wide .overview-card__title {
  grid-column: 2 / 3;
  margin-bottom: 0;
}

.overview-card--wide .overview-card__desc {
  grid-column: 2 / 3;
  margin-bottom: 0;
}

.overview-card--wide .overview-card__link {
  grid-column: 3 / 4;
  grid-row: 1 / 3;
  white-space: nowrap;
}

/* Card */
.overview-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-header-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px var(--color-card-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base),
    border-color var(--transition-base);
}

.overview-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--color-card-shadow);
  border-color: var(--color-accent);
}

.overview-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.overview-card__icon svg {
  width: 100%;
  height: 100%;
}

.overview-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.overview-card__desc {
  font-size: var(--font-size-sm);
  line-height: 1.6;
  opacity: 0.85;
  margin-bottom: var(--spacing-md);
}

.overview-card__link {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: gap var(--transition-fast);
}

.overview-card__link:hover {
  gap: var(--spacing-sm);
  color: var(--color-accent-hover);
}


/* ==========================================================================
   Interesting Fact Section
   ========================================================================== */

.fact-section {
  text-align: center;
}

.fact-card {
  max-width: 700px;
  margin: 0 auto;
  background-color: var(--color-card-bg);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  box-shadow: 0 4px 16px var(--color-card-shadow);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.fact-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-accent);
}

.fact-card__icon svg {
  width: 100%;
  height: 100%;
}

.fact-card__text {
  font-size: var(--font-size-xl);
  font-style: italic;
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
  quotes: "«" "»" "„" "“";
}

.fact-card__text::before {
  content: open-quote;
  color: var(--color-accent);
  font-size: 1.5em;
  line-height: 0;
  vertical-align: -0.25em;
  margin-right: 4px;
}

.fact-card__text::after {
  content: close-quote;
  color: var(--color-accent);
  font-size: 1.5em;
  line-height: 0;
  vertical-align: -0.25em;
  margin-left: 4px;
}

.fact-card__btn {
  margin-top: var(--spacing-sm);
}


/* ==========================================================================
   Scroll Reveal Animation
   ========================================================================== */

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal--visible {
  opacity: 1;
  transform: translateY(0);
}


/* ==========================================================================
   Responsive (Adaptive) Styles
   ========================================================================== */

/* 1440px and above — default styles apply */

/* 1024px — tablet landscape */
@media (max-width: 1024px) {
  :root {
    --container-padding: 24px;
  }

  .header__nav-list {
    gap: var(--spacing-sm);
  }

  .header__nav-link {
    padding: var(--spacing-sm) var(--spacing-sm);
    font-size: var(--font-size-xs);
  }
}

/* 768px — tablet portrait */
@media (max-width: 768px) {
  :root {
    --container-padding: 20px;
    --font-size-hero: 2rem;
    --font-size-xxxl: 1.75rem;
    --font-size-xxl: 1.35rem;
  }

  .header__inner {
    height: 60px;
  }

  /* Burger visible on mobile */
  .header__burger {
    display: flex;
  }

  /* Navigation becomes mobile menu */
  .header__nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-header-bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right var(--transition-base);
    z-index: 999;
  }

  .header__nav--open {
    right: 0;
  }

  .header__nav-list {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .header__nav-link {
    font-size: var(--font-size-lg);
    padding: var(--spacing-md) var(--spacing-xl);
  }

  /* Footer stacks on mobile */
  .footer__inner {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }

  /* Overview grid: 2 columns on tablet */
  .overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .overview-card--wide {
    grid-template-columns: auto 1fr;
  }

  .overview-card--wide .overview-card__link {
    grid-column: 2 / 3;
    grid-row: 3 / 4;
    white-space: normal;
  }

  .section {
    padding: var(--spacing-xl) 0;
  }

  .hero {
    min-height: 50vh;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}

/* 320px — small mobile */
@media (max-width: 480px) {
  :root {
    --container-padding: 16px;
    --font-size-hero: 1.6rem;
    --font-size-xxxl: 1.5rem;
    --font-size-xxl: 1.2rem;
  }

  .header__inner {
    height: 56px;
  }

  .header__logo-text {
    font-size: var(--font-size-lg);
  }

  .header__logo-icon {
    width: 32px;
    height: 32px;
  }

  /* Overview grid: 1 column on mobile */
  .overview-grid {
    grid-template-columns: 1fr;
  }

  .overview-card--wide {
    display: block;
  }

  .overview-card--wide .overview-card__link {
    white-space: normal;
  }

  .hero {
    min-height: 40vh;
    padding: var(--spacing-xl) var(--container-padding);
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
  }
}


/* ==========================================================================
   Accessibility / Reduced motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  html {
    scroll-behavior: auto;
  }
}


/* ==========================================================================
   Scrollbar styling
   ========================================================================== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-hover);
}


/* ==========================================================================
   Gallery / Slider Section
   ========================================================================== */

.gallery-section {
  background-color: var(--color-section-alt);
}

.section__subtitle {
  text-align: center;
  color: var(--color-text);
  opacity: 0.7;
  margin-bottom: var(--spacing-xl);
  font-size: var(--font-size-lg);
}

.gallery {
  max-width: 900px;
  margin: 0 auto;
}

.gallery__main {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.gallery__viewport {
  flex: 1;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-header-border);
  box-shadow: 0 2px 12px var(--color-card-shadow);
}

.gallery__slide {
  width: 100%;
  aspect-ratio: 800 / 500;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery__slide svg {
  width: 100%;
  height: 100%;
  display: block;
}

.gallery__nav {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-header-border);
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  z-index: 2;
}

.gallery__nav:hover {
  background-color: var(--color-accent);
  color: var(--color-btn-text);
  border-color: var(--color-accent);
}

.gallery__nav svg {
  width: 20px;
  height: 20px;
}

.gallery__info {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.gallery__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.gallery__desc {
  font-size: var(--font-size-sm);
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto var(--spacing-xs);
}

.gallery__counter {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.gallery__thumbs {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
  scrollbar-width: thin;
}

.gallery__thumb {
  width: 80px;
  height: 55px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  opacity: 0.6;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  background-color: var(--color-section-alt);
}

.gallery__thumb svg {
  width: 100%;
  height: 100%;
  display: block;
}

.gallery__thumb:hover {
  opacity: 0.9;
}

.gallery__thumb--active {
  opacity: 1;
  border-color: var(--color-accent);
}

/* Lightbox (fullscreen) */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 3000;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.lightbox--open {
  display: flex;
}

.lightbox__close {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border: none;
  color: #FFF;
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 10;
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.lightbox__close svg {
  width: 24px;
  height: 24px;
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  border: none;
  color: #FFF;
  cursor: pointer;
  transition: background var(--transition-fast);
  z-index: 10;
}

.lightbox__nav:hover {
  background: rgba(255, 255, 255, 0.25);
}

.lightbox__nav svg {
  width: 24px;
  height: 24px;
}

.lightbox__nav--prev {
  left: var(--spacing-md);
}

.lightbox__nav--next {
  right: var(--spacing-md);
}

.lightbox__content {
  max-width: 80vw;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__content svg {
  width: 100%;
  height: auto;
  max-height: 80vh;
  display: block;
}

.lightbox__counter {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  color: #FFF;
  font-size: var(--font-size-sm);
  font-weight: 600;
  opacity: 0.8;
}

@media (max-width: 768px) {
  .gallery__nav {
    width: 36px;
    height: 36px;
  }

  .gallery__nav svg {
    width: 16px;
    height: 16px;
  }

  .gallery__thumb {
    width: 60px;
    height: 42px;
  }

  .lightbox__nav {
    width: 40px;
    height: 40px;
  }

  .lightbox__nav svg {
    width: 20px;
    height: 20px;
  }

  .lightbox__content {
    max-width: 95vw;
    max-height: 70vh;
  }
}

@media (max-width: 480px) {
  .gallery__nav--prev,
  .gallery__nav--next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.3);
    color: #FFF;
    border: none;
  }

  .gallery__nav--prev {
    left: var(--spacing-sm);
  }

  .gallery__nav--next {
    right: var(--spacing-sm);
  }
}