/* ==========================================================================
   TRAVIOX — Luxury International Travel & Bespoke Tour Booking
   Core Stylesheet (CSS3 Variables, Editorial Typography, Custom Components)
   ========================================================================== */

:root {
  /* Primary Brand Palette: Deep Forest / Travel Green */
  --primary: #14362B;
  --primary-hover: #0D261E;
  --primary-light: #1F4E3E;
  --primary-subtle: #EBF2EE;

  /* Secondary Palette: Warm Sand / Beige */
  --secondary: #F4EFE6;
  --secondary-dark: #E5DEC9;
  --secondary-light: #FAF8F5;

  /* Accent Palette: Sunset Orange / Coral */
  --accent: #D95D39;
  --accent-hover: #BF4B28;
  --accent-subtle: #FDF0EC;

  /* Supporting Neutrals */
  --white: #FFFFFF;
  --off-white: #FAF8F5;
  --charcoal: #181D1B;
  --text-dark: #1E2421;
  --text-body: #4A544F;
  --text-muted: #6E7A74;
  --soft-gray: #E4E2DC;
  --border-subtle: rgba(20, 54, 43, 0.09);
  --border-strong: rgba(20, 54, 43, 0.16);

  /* Typography (2+1 Rule: Fraunces Display, Plus Jakarta Sans Body, JetBrains Mono Tabular) */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Radii & Shadows */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-soft: 0 12px 32px -8px rgba(20, 54, 43, 0.07);
  --shadow-elevated: 0 20px 48px -12px rgba(20, 54, 43, 0.12);
  --transition-fast: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Typography */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-body);
  background-color: var(--off-white);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
.display-font {
  font-family: var(--font-display);
  color: var(--charcoal);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

p {
  margin-bottom: 1rem;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

.tabular-nums {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* Section Rhythm & Containers */
.section-padding {
  padding-top: 6rem;
  padding-bottom: 6rem;
}

.section-padding-sm {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.bg-sand {
  background-color: var(--secondary);
}

.bg-forest {
  background-color: var(--primary);
  color: var(--white);
}

.bg-forest h1, .bg-forest h2, .bg-forest h3, .bg-forest h4, .bg-forest h5 {
  color: var(--white);
}

.bg-offwhite {
  background-color: var(--off-white);
}

/* Clean Editorial Kicker & Metadata (Zero-Pill Discipline) */
.section-kicker {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.bg-forest .section-kicker {
  color: #F29F85;
}

.meta-inline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

.meta-inline .sep {
  color: var(--soft-gray);
  user-select: none;
}

/* Custom Buttons (No Default Bootstrap Blue) */
.btn-traviox-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--primary);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.btn-traviox-primary:hover,
.btn-traviox-primary:focus-visible {
  background-color: var(--primary-hover);
  border-color: var(--primary-hover);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-traviox-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--accent);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.btn-traviox-accent:hover,
.btn-traviox-accent:focus-visible {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--white);
  transform: translateY(-1px);
}

.btn-traviox-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  transition: transform var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.btn-traviox-outline:hover,
.btn-traviox-outline:focus-visible {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.btn-traviox-light {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--white);
  color: var(--charcoal);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--white);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.btn-traviox-light:hover {
  background-color: var(--secondary);
  color: var(--charcoal);
  transform: translateY(-1px);
}

/* ==========================================================================
   TOP BAR CONTRACT (Sticky, Clean 3-Zone Header)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background-color: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-soft);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 1.5rem;
}

.brand-wordmark {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: -0.03em;
  white-space: nowrap;
  text-decoration: none;
}

.brand-wordmark:hover {
  color: var(--primary-hover);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--charcoal);
  padding: 0.5rem 0;
  position: relative;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-item-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.nav-item-link:hover,
.nav-item-link.active {
  color: var(--primary);
}

.nav-item-link:hover::after,
.nav-item-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

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

.dropdown-panel {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-elevated);
  padding: 0.625rem;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  z-index: 1050;
}

.has-dropdown.dropdown-end .dropdown-panel {
  left: auto;
  right: 0;
}

.has-dropdown:hover .dropdown-panel,
.has-dropdown:focus-within .dropdown-panel,
.has-dropdown.is-open .dropdown-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-panel li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dark);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.dropdown-panel li a:hover,
.dropdown-panel li a.active {
  background-color: var(--secondary);
  color: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background-color: var(--white);
  color: var(--charcoal);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.icon-btn:hover {
  background-color: var(--secondary);
  border-color: var(--border-strong);
  color: var(--primary);
}

/* Search Overlay Drawer */
.search-drawer {
  position: fixed;
  top: 76px;
  left: 0;
  right: 0;
  background-color: var(--white);
  border-bottom: 1px solid var(--border-strong);
  box-shadow: var(--shadow-elevated);
  padding: 1.5rem 0;
  z-index: 1025;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

.search-drawer.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ==========================================================================
   HERO SECTION & EDITORIAL BOOKING PANEL
   ========================================================================== */
.hero-editorial {
  position: relative;
  padding: 2rem 0 4rem;
}

.hero-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 620px;
  display: flex;
  align-items: flex-end;
  padding: 3.5rem;
  background-color: var(--primary);
}

.hero-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(12, 31, 25, 0.90) 0%,
    rgba(12, 31, 25, 0.52) 50%,
    rgba(12, 31, 25, 0.22) 100%
  );
  z-index: 2;
}

.hero-content-wrap {
  position: relative;
  z-index: 3;
  width: 100%;
}

.hero-headline {
  font-size: clamp(2.5rem, 5vw, 4.35rem);
  color: var(--white);
  max-width: 16ch;
  margin-bottom: 1.25rem;
  line-height: 1.08;
}

.hero-lead {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 56ch;
  margin-bottom: 2rem;
}

/* Booking Panel */
.booking-search-bar {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-elevated);
  border: 1px solid var(--border-subtle);
  margin-top: 1.5rem;
}

.booking-field-group {
  display: flex;
  flex-direction: column;
  padding: 0.35rem 1rem;
  border-right: 1px solid var(--border-subtle);
}

.booking-field-group.no-border {
  border-right: none;
}

.booking-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.booking-label i {
  color: var(--accent);
  font-size: 0.95rem;
}

.booking-input,
.booking-select {
  border: none;
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--charcoal);
  padding: 0.2rem 0;
  width: 100%;
  outline: none;
}

.booking-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

/* Floating Editorial Feature Card on Hero */
.hero-floating-card {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  max-width: 300px;
  color: var(--charcoal);
  box-shadow: var(--shadow-elevated);
}

/* Page Sub-Hero Banner */
.page-hero {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 340px;
  display: flex;
  align-items: flex-end;
  padding: 3rem;
  margin-top: 1.5rem;
  background-color: var(--primary);
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.page-hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14, 38, 30, 0.88) 0%, rgba(14, 38, 30, 0.40) 100%);
  z-index: 2;
}

.page-hero-content {
  position: relative;
  z-index: 3;
  color: var(--white);
  max-width: 720px;
}

.page-hero-content h1 {
  color: var(--white);
  font-size: clamp(2rem, 4vw, 3.25rem);
  margin-bottom: 0.75rem;
}

/* ==========================================================================
   CARDS: DESTINATIONS, TOURS, SERVICES, BLOG
   ========================================================================== */
.img-fallback-wrap {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #14362B 0%, #245545 100%);
}

.card-img-zoom {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.destination-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 410px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.75rem;
  color: var(--white);
  background-color: var(--primary);
  border: 1px solid var(--border-subtle);
}

.destination-card:hover .card-img-zoom {
  transform: scale(1.04);
}

.destination-card-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.destination-card-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14, 34, 27, 0.9) 0%, rgba(14, 34, 27, 0.25) 60%, transparent 100%);
  z-index: 2;
}

.destination-card-body {
  position: relative;
  z-index: 3;
}

.destination-card-title {
  color: var(--white);
  font-size: 1.5rem;
  margin-bottom: 0.35rem;
}

/* Tour & Package Cards (Single-Elevation Depth) */
.tour-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.tour-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.tour-card:hover .card-img-zoom {
  transform: scale(1.04);
}

.tour-card-media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--primary);
}

.tour-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.tour-card-title {
  font-size: 1.25rem;
  margin: 0.45rem 0 0.65rem;
  color: var(--charcoal);
}

.tour-card-title a:hover {
  color: var(--accent);
}

.tour-card-footer {
  margin-top: auto;
  padding-top: 1.15rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.price-amount {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
}

/* ==========================================================================
   PROCESS / HOW IT WORKS TIMELINE
   ========================================================================== */
.process-step-card {
  position: relative;
  padding: 2rem 1.75rem;
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  height: 100%;
  transition: border-color var(--transition-fast);
}

.process-step-card:hover {
  border-color: var(--accent);
}

.step-index {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}

/* ==========================================================================
   ASYMMETRICAL EDITORIAL OVERLAP
   ========================================================================== */
.editorial-collage {
  position: relative;
  padding-bottom: 2.5rem;
}

.editorial-main-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.editorial-Inset-img {
  position: absolute;
  bottom: 0;
  right: -1.5rem;
  width: 52%;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 6px solid var(--off-white);
  box-shadow: var(--shadow-elevated);
}

/* ==========================================================================
   FILTER TABS / SEGMENTED CONTROLS (Functional Buttons)
   ========================================================================== */
.filter-bar {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  padding: 0.375rem;
  background-color: var(--secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.filter-tab-btn {
  border: none;
  background: transparent;
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.filter-tab-btn:hover {
  color: var(--charcoal);
}

.filter-tab-btn.active {
  background-color: var(--primary);
  color: var(--white);
}

/* ==========================================================================
   CUSTOM ACCORDION (FAQ & ITINERARY)
   ========================================================================== */
.traviox-accordion .accordion-item {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md) !important;
  margin-bottom: 0.875rem;
  overflow: hidden;
}

.traviox-accordion .accordion-button {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--charcoal);
  background-color: var(--white);
  padding: 1.25rem 1.5rem;
  box-shadow: none !important;
}

.traviox-accordion .accordion-button:not(.collapsed) {
  color: var(--primary);
  background-color: var(--secondary-light);
}

.traviox-accordion .accordion-body {
  padding: 0 1.5rem 1.35rem;
  color: var(--text-body);
  font-size: 0.95rem;
}

/* ==========================================================================
   STICKY SIDEBARS & FORMS
   ========================================================================== */
.sticky-panel {
  position: sticky;
  top: 98px;
}

.sidebar-card {
  background-color: var(--white);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.form-control-traviox,
.form-select-traviox {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-family: var(--font-body);
  color: var(--charcoal);
  background-color: var(--off-white);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-control-traviox:focus,
.form-select-traviox:focus {
  outline: none;
  border-color: var(--primary);
  background-color: var(--white);
}

/* ==========================================================================
   GALLERY MASONRY & LIGHTBOX
   ========================================================================== */
.gallery-item-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background-color: var(--primary);
}

.gallery-item-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

.gallery-item-card:hover img {
  transform: scale(1.04);
}

.gallery-caption-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(14, 34, 27, 0.85) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
  color: var(--white);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.gallery-item-card:hover .gallery-caption-overlay {
  opacity: 1;
}

.lightbox-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(12, 24, 20, 0.94);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.lightbox-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 1020px;
  width: 100%;
  text-align: center;
}

.lightbox-img {
  max-height: 78vh;
  width: auto;
  margin: 0 auto;
  border-radius: var(--radius-md);
  object-fit: contain;
}

/* ==========================================================================
   COMMON FOOTER & BACK TO TOP
   ========================================================================== */
.site-footer {
  background-color: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  padding-top: 5rem;
  padding-bottom: 2.5rem;
}

.site-footer h4,
.site-footer h5 {
  color: var(--white);
  font-size: 1.125rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.65rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.65);
}

.back-to-top {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background-color: var(--accent);
  color: var(--white);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  z-index: 1020;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
}

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

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