:root {
  --echo-primary: #008060;
  --echo-dark: #1f2933;
  --echo-muted: #64748b;
  --echo-soft: #eefbf4;
  --echo-border: #e5e7eb;
  --echo-bg: #fbfff8;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  font-family:
    Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--echo-dark);
  /* background: linear-gradient(120deg, #e8fff0 0%, #fff7e7 100%); */
}

.navbar {
  backdrop-filter: blur(14px);
  background: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--echo-border);
}

.nav-link.active{
  color: var(--echo-primary) !important;
}

.brand-icon img {
  width: 100%;
  height: 30px;
}

.hero {
  padding: 120px 0 70px;
}

.hero-card,
.content-card,
.sidebar-card {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(229, 231, 235, 0.9);
  border-radius: 24px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}
.theme-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

#contentArea{
  margin-top: 7.3rem;
}

.theme-item {
  background: #fdfdfd;
  border: 1px solid var(--echo-border);
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #334155;
  transition: all 0.2s ease;
  text-transform: capitalize;
}
.option-card {
  background: #f8fafc;
  border: 1px solid var(--echo-border);
  border-radius: 16px;
  padding: 1.5rem;
  height: 100%;
  transition: 0.3s;
}

.info-box {
  background: var(--echo-soft);
  border-left: 4px solid var(--echo-primary);
  padding: 1.5rem;
  border-radius: 0 16px 16px 0;
  margin: 1.5rem 0;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4.7rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  font-weight: 800;
}

.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--echo-muted);
  max-width: 760px;
}

.badge-soft {
  color: var(--echo-primary);
  background: var(--echo-soft);
  border: 1px solid rgba(0, 128, 96, 0.12);
  font-weight: 700;
}

.btn-echo {
  background: var(--echo-primary);
  color: #fff;
  border-radius: 999px;
  padding: 0.8rem 1.25rem;
  font-weight: 700;
}

.btn-echo:hover {
  background: #006e53;
  color: #fff;
}

.btn-outline-echo {
  color: var(--echo-primary);
  border-color: rgba(0, 128, 96, 0.28);
  border-radius: 999px;
  padding: 0.8rem 1.25rem;
  font-weight: 700;
  background: #fff;
}

.btn-outline-echo:hover {
  color: #fff;
  background: var(--echo-primary);
  border-color: var(--echo-primary);
}

.doc-layout {
  padding-bottom: 80px;
}

.doc-sidebar {
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
}

.doc-sidebar a {
  display: block;
  color: #475569;
  text-decoration: none;
  padding: 0.55rem 0.75rem;
  border-radius: 12px;
  font-size: 0.95rem;
  transition: 0.2s ease;
}

.doc-sidebar a:hover,
.doc-sidebar a.active {
  background: var(--echo-soft);
  color: var(--echo-primary);
  font-weight: 700;
}

.content-card {
  padding: clamp(1.2rem, 3vw, 2.2rem);
  margin-bottom: 1.5rem;
}

.feature-icon {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--echo-soft);
  color: var(--echo-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.feature-card {
  border: 1px solid var(--echo-border);
  border-radius: 18px;
  padding: 1.3rem;
  background: #fff;
  height: 100%;
  transition: 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.08);
}

.step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--echo-primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex: 0 0 auto;
}

.table thead th {
  background: #f8fafc;
  color: #334155;
  font-size: 0.9rem;
}

.accordion-button:not(.collapsed) {
  color: var(--echo-primary);
  background: var(--echo-soft);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(0, 128, 96, 0.14);
}

.image-placeholder {
  min-height: 260px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 18% 22%, rgba(0, 128, 96, 0.18), transparent 26%),
    radial-gradient(
      circle at 85% 40%,
      rgba(255, 159, 67, 0.2),
      transparent 28%
    ),
    #ffffff;
  border: 1px solid var(--echo-border);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
}

.mock-window {
  background: #fff;
  border: 1px solid var(--echo-border);
  border-radius: 18px;
  padding: 1.5rem;
  width: 100%;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

.mock-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 5px;
}

.main-product-img {
  width: 100%;
  object-fit: cover;
  border-radius: 12px;
}

.thumbnail-image {
  display: flex;
  flex-direction: row;
  gap: 8px;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.thumbnail-image div {
  cursor: pointer;
  border-radius: 10px;
  padding: 2px;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}

.thumbnail-image div {
  width: 40px;
  height: 40px;
  background: var(--echo-soft);
  border-radius: 6px;
}
.thumbnail-image div img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumbnail-image div.active {
  border-color: var(--echo-primary);
  background: var(--echo-soft);
}
.mock-variant-swatches div {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  border: 2px solid var(--echo-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: 0.2s;
}

.mock-variant-swatches div img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 6px;
}

.mock-variant-swatches div.active {
  background: var(--echo-primary);
  color: white;
  border-color: var(--echo-primary);
}

.mock-variant-swatches div:not(.active):hover {
  background: #f9fafb;
  border-color: #d1d5db;
}

/* Exact match for image_567864.png */
.support-section {
  border-radius: 30px;
  text-align: center;
}

.support-title {
  font-weight: 700;
  color: #0f172a;
  font-size: 2.25rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.support-text {
  color: #475569;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.support-email-link {
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 600;
  transition: color 0.2s ease;
}

.support-email-link:hover {
  color: #1d4ed8;
}

.back-to-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--echo-primary);
  color: #fff;
  border: none;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  box-shadow: 0 10px 28px rgba(0, 128, 96, 0.3);
}

.back-to-top.show {
  display: inline-flex;
}

@media (max-width: 991px) {
  .hero {
    padding: 95px 0 45px;
  }

  .doc-sidebar {
    position: relative;
    top: auto;
    max-height: none;
    margin-bottom: 1.5rem;
  }
}