/**
 * LAYOUTS & STRUCTURE
 * Dashboard layouts, sidebars, navigation, navbar, footer
 */

/* ============================================
   LOADER - Animation de chargement SPECTACULAIRE
   ============================================ */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #499ef1 0%, #7c6af5 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Particules de fond animées */
.page-loader::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(247, 181, 24, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(247, 181, 24, 0.15) 0%, transparent 70%);
    animation: pulseBackground 3s ease-in-out infinite;
}

@keyframes pulseBackground {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.loader-content {
    text-align: center;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    z-index: 10;
}

/* Conteneur du cadeau avec effet de lueur */
.loader-icon {
    position: relative;
    display: inline-block;
    margin-bottom: 2rem;
    animation: giftFloat 2s ease-in-out infinite;
    filter: drop-shadow(0 10px 40px rgba(247, 181, 24, 0.5));
}

.loader-icon img {
    width: 120px;
    height: 120px;
    animation: giftSpin 3s ease-in-out infinite;
    position: relative;
    z-index: 2;
}

/* Animation de flottement du cadeau */
@keyframes giftFloat {
    0%, 100% {
        transform: translateY(0px) scale(1);
        filter: drop-shadow(0 10px 40px rgba(247, 181, 24, 0.5));
    }
    50% {
        transform: translateY(-20px) scale(1.05);
        filter: drop-shadow(0 20px 60px rgba(247, 181, 24, 0.8));
    }
}

/* Animation de rotation douce */
@keyframes giftSpin {
    0%, 100% {
        transform: rotate(-5deg);
    }
    50% {
        transform: rotate(5deg);
    }
}

/* Cercle de lueur pulsante autour du cadeau */
.loader-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(247, 181, 24, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: glowPulse 2s ease-in-out infinite;
    z-index: 1;
}

@keyframes glowPulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.3);
        opacity: 1;
    }
}

/* Particules magiques qui s'échappent */
.loader-icon::after {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: #f7b518;
    border-radius: 50%;
    box-shadow:
        -20px 30px 0 #f7b518,
        20px 25px 0 #fff,
        -30px 50px 0 #fff,
        30px 45px 0 #f7b518,
        0px 60px 0 #fff,
        -40px 70px 0 #f7b518,
        40px 65px 0 #fff;
    animation: sparkles 2s ease-in-out infinite;
}

@keyframes sparkles {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(-40px);
    }
}

.loader-text {
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: textGlow 2s ease-in-out infinite;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

@keyframes textGlow {
    0%, 100% {
        opacity: 0.8;
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
    }
    50% {
        opacity: 1;
        text-shadow: 0 0 30px rgba(247, 181, 24, 0.8), 0 0 40px rgba(255, 255, 255, 0.6);
    }
}

.loader-spinner {
    display: none;
}

/* ============================================
   NAVBAR - Floating Pill Style
   ============================================ */

.navbar {
  position: fixed;
  top: var(--space-6);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-fixed);
  width: calc(100% - 48px);
  max-width: 1200px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 100px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08),
              0 2px 8px rgba(73, 158, 241, 0.1);
  transition: all var(--transition-base);
  padding: 0 var(--space-6);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12),
              0 4px 12px rgba(73, 158, 241, 0.15);
  top: var(--space-4);
}

.navbar.hidden {
  transform: translateX(-50%) translateY(-150%);
  opacity: 0;
}

.navbar__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: var(--space-8);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: transform var(--transition-base);
}

.navbar__logo:hover {
  transform: scale(1.05);
}

.navbar__logo-img {
  height: 32px;
  width: auto;
}

.navbar__logo-icon {
  font-size: 1.5rem;
}

.navbar__logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin: 0 auto;
}

.navbar__link {
  color: var(--color-text-secondary);
  font-weight: var(--weight-medium);
  font-size: var(--text-base);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-base);
  transition: all var(--transition-fast);
  position: relative;
}

.navbar__link:hover {
  color: var(--color-text-primary);
  background: rgba(73, 158, 241, 0.05);
}

.navbar__link.active {
  color: var(--color-primary-start);
  background: var(--gradient-primary-soft);
  font-weight: var(--weight-semibold);
}

.navbar__link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.navbar__toggle:hover {
  background: rgba(0, 0, 0, 0.05);
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.navbar__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
@media (max-width: 768px) {
  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    padding: var(--space-6);
    gap: var(--space-4);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
  }

  .navbar__menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .navbar__actions {
    display: none;
  }

  body.menu-open {
    overflow: hidden;
  }
}

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

.footer {
  background: #FFFFFF;
  border-top: 1px solid var(--color-border);
  padding: var(--space-20) 0 var(--space-8);
  margin-top: var(--space-20);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.footer__logo-img {
  height: 28px;
  width: auto;
}

.footer__logo-icon {
  font-size: 1.5rem;
}

.footer__logo-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__tagline {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: 0;
}

.footer__social {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--glass-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
  padding: var(--space-2);
}

.footer__social-link svg {
  width: 100%;
  height: 100%;
  display: block;
}

.footer__social-link:hover {
  background: var(--gradient-primary-soft);
  border-color: var(--color-primary-start);
  color: var(--color-primary-start);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.footer__column-title {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links a {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-primary-start);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright {
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  margin: 0;
}

.footer__badges {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  background: var(--glass-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  font-weight: var(--weight-medium);
}

@media (max-width: 1024px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .footer {
    padding: var(--space-16) 0 var(--space-6);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .footer__column {
    margin-bottom: var(--space-4);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-6);
    padding-top: var(--space-8);
  }

  .footer__badges {
    width: 100%;
  }

  .footer__links {
    gap: var(--space-3);
  }
}

/* ============================================
   MAIN LAYOUT
   ============================================ */

.app-layout {
  display: flex;
  min-height: 100vh;
  background: #FFFFFF;
  position: relative;
}

/* Background Gradient Effect */
.app-layout::before {
  content: '';
  position: fixed;
  top: -50%;
  right: -30%;
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, rgba(73, 158, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.app-layout::after {
  content: '';
  position: fixed;
  bottom: -40%;
  left: -20%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ============================================
   SIDEBAR
   ============================================ */

.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 280px;
  background: var(--glass-bg);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-right: 1px solid var(--glass-border);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  z-index: var(--z-fixed);
  overflow-y: auto;
}

/* Sidebar Header */
.sidebar-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
}

.sidebar-logo {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.nav-section {
  margin-bottom: var(--space-4);
}

.nav-section-title {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
  padding: 0 var(--space-4);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-base);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transition: transform var(--transition-fast);
}

.nav-link:hover {
  background: var(--color-surface);
  color: var(--color-text-primary);
}

.nav-link.active {
  background: var(--gradient-primary-soft);
  color: var(--color-primary-start);
  font-weight: var(--weight-semibold);
}

.nav-link.active::before {
  transform: scaleY(1);
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-text {
  flex: 1;
}

.nav-badge {
  margin-left: auto;
}

/* Sidebar Footer (User Profile) */
.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-base);
  transition: background var(--transition-fast);
  cursor: pointer;
}

.user-profile:hover {
  background: var(--color-surface);
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-email {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.main-content {
  flex: 1;
  margin-left: 280px;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: var(--z-base);
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-title {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.topbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-search {
  width: 300px;
  position: relative;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Content Wrapper */
.content {
  flex: 1;
  padding: var(--space-8);
  max-width: 1600px;
  width: 100%;
  margin: 0 auto;
}

.content-narrow {
  max-width: 1200px;
}

.content-wide {
  max-width: 100%;
}

/* ============================================
   GRID SYSTEMS
   ============================================ */

/* Bento Grid (Asymmetric Grid) */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.bento-card {
  grid-column: span 4;
  padding: var(--space-6);
}

.bento-wide {
  grid-column: span 8;
}

.bento-tall {
  grid-row: span 2;
}

.bento-full {
  grid-column: span 12;
}

/* KPI Grid */
.kpis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.kpi-card {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.kpi-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.kpi-content {
  flex: 1;
}

.kpi-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.kpi-value {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.kpi-trend {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  font-size: var(--text-sm);
}

.kpi-trend-up {
  color: var(--color-success);
}

.kpi-trend-down {
  color: var(--color-error);
}

/* Financial Grid */
.financial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.financial-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface-soft);
  border-radius: var(--radius-base);
  border: 1px solid var(--color-border);
}

.financial-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: var(--weight-medium);
}

.financial-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

/* Card Header */
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.card-header h3 {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card-body {
  flex: 1;
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-6);
  color: var(--color-text-tertiary);
}

.empty-state-title {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 400px;
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .bento-card {
    grid-column: span 6;
  }

  .bento-wide {
    grid-column: span 12;
  }
}

@media (max-width: 768px) {
  .topbar {
    padding: var(--space-4);
  }

  .topbar-search {
    display: none;
  }

  .content {
    padding: var(--space-4);
  }

  .bento-card {
    grid-column: span 12;
  }

  .kpis-grid {
    grid-template-columns: 1fr;
  }

  .financial-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   STICKY MOBILE CTA
   ============================================ */

.sticky-mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(73, 158, 241, 0.15);
  padding: var(--space-4);
  z-index: var(--z-sticky);
  transform: translateY(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.1);
  display: none;
}

.sticky-mobile-cta.visible {
  transform: translateY(0);
}

.sticky-mobile-cta__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  max-width: 600px;
  margin: 0 auto;
}

.sticky-mobile-cta__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sticky-mobile-cta__text strong {
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-text-primary);
}

.sticky-mobile-cta__text span {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

/* Show only on mobile and tablet */
@media (max-width: 1024px) {
  .sticky-mobile-cta {
    display: block;
  }
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    0 10px 30px rgba(73, 158, 241, 0.4),
    0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: var(--z-fixed);
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8) translateY(20px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.back-to-top:hover {
  transform: scale(1.1) translateY(-4px);
  box-shadow:
    0 15px 40px rgba(73, 158, 241, 0.5),
    0 6px 16px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
  transform: scale(0.95) translateY(0);
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

/* Adjust position when sticky mobile CTA is visible */
@media (max-width: 1024px) {
  .sticky-mobile-cta.visible ~ .back-to-top.visible {
    bottom: calc(var(--space-6) + 80px);
  }
}

@media (max-width: 768px) {
  .back-to-top {
    width: 48px;
    height: 48px;
    bottom: var(--space-4);
    right: var(--space-4);
  }

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

  .sticky-mobile-cta.visible ~ .back-to-top.visible {
    bottom: calc(var(--space-4) + 80px);
  }
}