/* ============================================
   Components CSS - Solar Surge
   Header, Footer, Buttons, Cards, Modals
   ============================================ */

/* --- Header --- */
.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  padding: 20px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  gap: var(--space-md);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 10;
  flex-shrink: 0;
  margin-right: auto;
}

.logo .logo-icon {
  width: 38px;
  height: 38px;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-white);
}

.logo-highlight {
  color: var(--color-white);
}

/* Two-line nav */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-item-two {
  display: flex;
  flex-direction: column;
  padding: 8px 20px;
  text-decoration: none;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  transition: background var(--transition);
}

.nav-item-two:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-item-two:hover {
  background: rgba(255, 255, 255, 0.05);
}

.nav-desc {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: var(--fw-regular);
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.3px;
  line-height: 1.3;
  white-space: nowrap;
}

.nav-label {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: rgba(255, 255, 255, 0.95);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  line-height: 1.4;
}

.nav-item-two:hover .nav-label {
  color: var(--color-secondary);
}

.nav-item-two.active .nav-label {
  color: var(--color-secondary);
}

/* Green dot for "Get a Quote" */
.nav-dot-green {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #28c840;
  flex-shrink: 0;
}

/* Phone icon in nav */
.nav-phone-icon {
  flex-shrink: 0;
  opacity: 0.8;
}

/* Hamburger - always visible */
.hamburger {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 10;
  margin-left: var(--space-lg);
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition);
  border-radius: 1px;
}

/* ===== Fullscreen Overlay Menu ===== */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background: rgba(5, 5, 12, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.fullscreen-menu.open {
  opacity: 1;
  visibility: visible;
}

/* Close button - white circle top center */
.menu-close {
  position: absolute;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--color-white);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.menu-close:hover {
  transform: translateX(-50%) scale(1.08);
  box-shadow: 0 6px 32px rgba(0, 0, 0, 0.4);
}

.menu-close span {
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  color: var(--color-primary);
}

/* Social icons - left side vertical */
.menu-social {
  position: absolute;
  left: 48px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.menu-social a {
  color: var(--color-white);
  opacity: 0.7;
  transition: opacity var(--transition), transform var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.menu-social a:hover {
  opacity: 1;
  transform: scale(1.15);
}

/* Navigation links - center */
.menu-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.menu-nav-link {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: var(--fw-bold);
  color: rgba(255, 255, 255, 0.35);
  text-decoration: none;
  padding: 6px 16px;
  transition: color 0.3s ease;
  background: none;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.menu-nav-link:hover {
  color: rgba(255, 255, 255, 0.9);
}

.menu-nav-link.active {
  color: var(--color-white);
}

/* Stagger animation for links */
.fullscreen-menu.open .menu-nav-link,
.fullscreen-menu.open .menu-nav-group {
  animation: menuFadeUp 0.4s ease forwards;
  opacity: 0;
}

.fullscreen-menu.open .menu-nav > :nth-child(1) { animation-delay: 0.05s; }
.fullscreen-menu.open .menu-nav > :nth-child(2) { animation-delay: 0.08s; }
.fullscreen-menu.open .menu-nav > :nth-child(3) { animation-delay: 0.11s; }
.fullscreen-menu.open .menu-nav > :nth-child(4) { animation-delay: 0.14s; }
.fullscreen-menu.open .menu-nav > :nth-child(5) { animation-delay: 0.17s; }
.fullscreen-menu.open .menu-nav > :nth-child(6) { animation-delay: 0.20s; }
.fullscreen-menu.open .menu-nav > :nth-child(7) { animation-delay: 0.23s; }
.fullscreen-menu.open .menu-nav > :nth-child(8) { animation-delay: 0.26s; }

@keyframes menuFadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Chevron for dropdown items */
.menu-chevron {
  transition: transform 0.3s ease;
  opacity: 0.5;
}

.menu-nav-group.expanded .menu-chevron {
  transform: rotate(180deg);
}

.menu-nav-group {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Sub links (dropdown inside overlay) */
.menu-sub-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease;
  opacity: 0;
}

.menu-nav-group.expanded .menu-sub-links {
  max-height: 200px;
  opacity: 1;
}

.menu-sub-link {
  font-family: var(--font-heading);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  font-weight: var(--fw-medium);
  color: rgba(255, 255, 255, 0.3);
  text-decoration: none;
  padding: 6px 16px;
  transition: color 0.3s ease;
}

.menu-sub-link:hover {
  color: var(--color-secondary);
}

/* Header responsive */
@media (max-width: 1100px) {
  .nav-item-two {
    padding: 8px 14px;
  }

  .nav-desc {
    font-size: 0.65rem;
  }

  .nav-label {
    font-size: 0.8rem;
  }
}

@media (max-width: 900px) {
  .nav-menu {
    display: none;
  }

  .header-inner {
    padding: 0 20px;
  }

  .hamburger {
    margin-left: auto;
    padding: 10px;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
  }

  .menu-social {
    left: 20px;
    gap: 20px;
  }

  .menu-nav-link {
    font-size: clamp(1.3rem, 5vw, 1.8rem);
  }

  .menu-close {
    width: 60px;
    height: 60px;
    top: 20px;
  }
}

@media (max-width: 480px) {
  .menu-social {
    position: static;
    flex-direction: row;
    transform: none;
    justify-content: center;
    gap: 20px;
    order: 2;
    margin-top: 32px;
  }

  .fullscreen-menu {
    flex-direction: column;
    padding: 100px 20px 40px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .menu-nav {
    order: 1;
    gap: 2px;
  }

  .menu-nav-link {
    font-size: clamp(1.2rem, 6vw, 1.6rem);
    padding: 8px 12px;
    min-height: 44px;
  }

  .menu-sub-link {
    font-size: 0.9rem;
    padding: 8px 12px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .menu-close {
    width: 52px;
    height: 52px;
    top: 16px;
  }

  .menu-close span {
    font-size: var(--fs-xs);
  }
}

@media (max-width: 360px) {
  .menu-nav-link {
    font-size: 1.1rem;
  }

  .fullscreen-menu {
    padding: 90px 16px 32px;
  }
}

/* --- Footer --- */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-col h4 {
  color: var(--color-white);
  font-size: var(--fs-lg);
  margin-bottom: var(--space-lg);
  font-weight: var(--fw-semibold);
}

.footer-about .footer-logo {
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer-about .footer-logo span {
  color: var(--color-white);
}

.footer-about p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--fs-sm);
  line-height: 1.8;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--fs-sm);
  transition: color var(--transition);
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--fs-sm);
}

.footer-contact-item svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  fill: rgba(255, 255, 255, 0.6);
}

.social-links {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  transition: background var(--transition);
}

.social-links a:hover {
  background: rgba(255, 255, 255, 0.3);
}

.social-links svg {
  width: 18px;
  height: 18px;
  fill: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.4);
  transition: color var(--transition);
}

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

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

@media (max-width: 768px) {
  .site-footer {
    padding: var(--space-3xl) 0 var(--space-lg);
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}

.btn-primary:hover {
  background: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

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

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

.btn-dark:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.btn-lg {
  padding: 16px 36px;
  font-size: var(--fs-base);
}

.btn-sm {
  padding: 8px 18px;
  font-size: var(--fs-xs);
}

.btn-icon svg {
  width: 16px;
  height: 16px;
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  background: var(--color-bg-alt);
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-body {
  padding: var(--space-lg);
}

.card-body h3 {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-sm);
}

.card-body p {
  font-size: var(--fs-sm);
  color: var(--color-text-light);
}

.card-tag {
  display: inline-block;
  padding: 4px 12px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  background: rgba(240, 165, 0, 0.1);
  color: var(--color-secondary-dark);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-secondary);
  margin-top: var(--space-md);
  transition: gap var(--transition);
}

.card-link:hover {
  gap: 10px;
}

.card-link svg {
  width: 16px;
  height: 16px;
}

/* --- Service Icon Card --- */
.icon-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.icon-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary);
}

.icon-card .icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: rgba(240, 165, 0, 0.1);
  margin-bottom: var(--space-lg);
}

.icon-card .icon-wrap svg {
  width: 28px;
  height: 28px;
  fill: var(--color-secondary);
}

.icon-card h3 {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-sm);
}

.icon-card p {
  font-size: var(--fs-sm);
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  padding: var(--space-lg) 0;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-extrabold);
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  letter-spacing: 1px;
}

@media (max-width: 768px) {
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl) var(--space-lg);
  }

  .stat-number {
    font-size: var(--fs-3xl);
  }

  .stat-label {
    font-size: var(--fs-xs);
  }
}

@media (max-width: 400px) {
  .stats-bar {
    gap: var(--space-lg) var(--space-md);
  }

  .stat-number {
    font-size: var(--fs-2xl);
  }
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fs-lg);
  margin-bottom: var(--space-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-3d {
  position: absolute;
  right: 0;
  top: 0;
  width: 50%;
  height: 100%;
  z-index: 1;
}

.hero-3d spline-viewer,
.hero-3d .spline-fallback {
  width: 100%;
  height: 100%;
}

.spline-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.spline-fallback svg {
  width: 300px;
  height: 300px;
  opacity: 0.2;
}

@media (max-width: 1024px) {
  .hero {
    min-height: 80vh;
  }

  .hero-3d {
    opacity: 0.3;
    width: 100%;
  }

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

@media (max-width: 768px) {
  .hero {
    min-height: 70vh;
    padding-top: 100px;
  }
}

/* --- Page Hero (Subpages) --- */
.page-hero {
  position: relative;
  padding: 160px 0 80px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  text-align: center;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: linear-gradient(to bottom right, transparent 49%, var(--color-bg) 50%);
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.page-hero p {
  color: rgba(255, 255, 255, 0.8);
  font-size: var(--fs-lg);
  max-width: 600px;
  margin: 0 auto;
}

.page-hero .breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
}

.page-hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition);
}

.page-hero .breadcrumb a:hover {
  color: var(--color-white);
}

.page-hero .breadcrumb .separator {
  font-size: var(--fs-xs);
}

/* --- CTA Banner --- */
.cta-banner {
  padding: var(--space-4xl) 0;
  background: var(--color-secondary);
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  opacity: 1;
  font-size: var(--fs-lg);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  padding: var(--space-lg);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition);
}

.modal-overlay.active .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  font-size: var(--fs-xl);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition);
  font-size: var(--fs-lg);
  color: var(--color-text-light);
}

.modal-close:hover {
  background: var(--color-border);
}

.modal-body {
  padding: var(--space-xl);
}

/* --- Form Styles --- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(26, 26, 26, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

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

/* --- Placeholder Image --- */
.placeholder-img {
  background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a3b8;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

/* --- Video Embed --- */
.video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #000;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-thumb {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition);
}

.video-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
}

.video-thumb .play-btn {
  position: relative;
  z-index: 1;
  width: 72px;
  height: 72px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.video-thumb:hover .play-btn {
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(240, 165, 0, 0.5);
}

.play-btn svg {
  width: 24px;
  height: 24px;
  fill: var(--color-white);
  margin-left: 4px;
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  border: none;
  box-shadow: var(--shadow-md);
}

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

.back-to-top:hover {
  background: var(--color-primary-light);
  transform: translateY(-2px);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  fill: var(--color-white);
}