@charset "UTF-8";

    :root {
      --default-font: "Roboto", system-ui, -apple-system, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif,
        "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol",
        "Noto Color Emoji";
      --heading-font: "Raleway", sans-serif;
      --nav-font: "Poppins", sans-serif;
    }

    /* Global Colors */
    :root {
      --background-color: #f1f5f4;
      --default-color: #212529;
      --heading-color: #2d465e;
      --accent-color: #08915e;
      --surface-color: #ffffff;
      --contrast-color: #ffffff;
    }

    /* Nav Colors (kept for compatibility with your existing layout) */
    :root {
      --nav-color: rgba(255, 255, 255, 0.75);
      --nav-hover-color: #08915e;
      --nav-mobile-background-color: #ffffff;
      --nav-dropdown-background-color: #ffffff;
      --nav-dropdown-color: #212529;
      --nav-dropdown-hover-color: #08915e;
    }

    .light-background {
      --background-color: #ffffff;
      --surface-color: #ffffff;
    }

    .dark-background {
      --background-color: #060606;
      --default-color: #ffffff;
      --heading-color: #ffffff;
      --surface-color: #252525;
      --contrast-color: #ffffff;
    }

    /* ====== PAGE LAYOUT ====== */

    body {
      margin: 0;
      font-family: var(--default-font);
      color: var(--default-color);
      background: var(--background-color);
      line-height: 1.6;
    }

  /* ====== WATER TREATMENT CATALOG STYLES (PRO LAYOUT) ====== */

.wtc-main {
  max-width: 1240px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: minmax(0, 270px) minmax(0, 1fr);
  gap: 2rem;
}

@media (max-width: 992px) {
  .wtc-main {
    grid-template-columns: minmax(0, 1fr);
    padding-inline: 1.25rem;
  }
}

/* ----- Sidebar ----- */

.wtc-sidebar {
  position: relative;
}

.wtc-sidebar-toggle {
  display: none;
  width: 100%;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  background: #ffffff;
  padding: 0.7rem 1rem;
  font-family: var(--nav-font);
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.wtc-sidebar-toggle span {
  font-size: 0.9rem;
}

@media (max-width: 992px) {
  .wtc-sidebar-toggle {
    display: flex;
    margin-bottom: 0.75rem;
  }
}

.wtc-sidebar-inner {
  position: relative;
}

@media (min-width: 993px) {
  .wtc-sidebar-inner {
    position: sticky;
    top: 5.5rem;
  }
}

.wtc-sidebar-card {
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 14px 35px rgba(15, 23, 42, 0.08);
  padding: 1.4rem 1.4rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

@media (max-width: 992px) {
  .wtc-sidebar-card {
    display: none;
    margin-bottom: 1.25rem;
  }
  .wtc-sidebar-card.is-open {
    display: flex;
  }
}

.wtc-sidebar-title {
  font-size: 1.05rem;
  font-family: var(--heading-font);
  color: var(--heading-color);
  margin: 0;
}

.wtc-sidebar-subtitle {
  font-size: 0.82rem;
  margin: 0.1rem 0 0;
  color: rgba(15, 23, 42, 0.7);
}

.wtc-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.wtc-nav-item {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

/* sublinks are hidden by default */
.wtc-nav-sublist {
  list-style: none;
  margin: 0;
  padding-left: 0.9rem;
  border-left: 1px solid rgba(148, 163, 184, 0.35);
  display: none;                    /* 👈 changed */
  flex-direction: column;
  gap: 0.25rem;
}

/* when a nav item is open, show its sublinks */
.wtc-nav-item.is-open .wtc-nav-sublist {
  display: flex;                     /* 👈 new */
}

.wtc-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  border-radius: 999px;
  padding: 0.55rem 0.95rem;
  font-family: var(--nav-font);
  font-size: 0.85rem;
  color: var(--heading-color);
  background: #f3faf7;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
}

.wtc-nav-link .label {
  font-weight: 500;
}

.wtc-nav-link .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(8, 145, 94, 0.5);
}

.wtc-nav-link.is-active {
  background: var(--accent-color);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(8, 145, 94, 0.38);
}

.wtc-nav-link.is-active .dot {
  background: #ffffff;
}


.wtc-nav-sublink {
  background: transparent;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  padding: 0.28rem 0.5rem;
  font-size: 0.78rem;
  cursor: pointer;
  text-align: left;
  color: rgba(15, 23, 42, 0.8);
  transition: all 0.16s ease;
}

.wtc-nav-sublink:hover,
.wtc-nav-sublink.sub-active {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: rgba(8, 145, 94, 0.06);
}

/* ----- Content area ----- */

.wtc-content {
  min-width: 0;
}

.wtc-hero {
  margin-bottom: 1.8rem;
}

.wtc-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(8, 145, 94, 0.08);
  color: var(--accent-color);
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 0.8rem;
}

.wtc-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent-color);
}

.wtc-hero h1 {
  font-family: var(--heading-font);
  font-size: 1.8rem;
  letter-spacing: 0.02em;
  margin: 0 0 0.8rem;
  color: var(--heading-color);
}

.wtc-hero p {
  margin: 0 0 0.75rem;
  font-size: 0.94rem;
  color: rgba(15, 23, 42, 0.85);
  max-width: 720px;
}

.wtc-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: rgba(71, 85, 105, 0.95);
}

.wtc-hero-meta span::before {
  content: "• ";
}

/* ----- Sections ----- */

.wtc-section {
  display: none;
  margin-bottom: 2.5rem;
}

.wtc-section.is-active {
  display: block;
}

.wtc-section > header {
  margin-bottom: 1.4rem;
}

.wtc-section h2 {
  margin: 0 0 0.4rem;
  font-family: var(--heading-font);
  font-size: 1.35rem;
}

.section-intro {
  margin: 0;
  font-size: 0.9rem;
  color: rgba(71, 85, 105, 0.98);
  max-width: 700px;
}

.wtc-subgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

@media (max-width: 960px) {
  .wtc-subgrid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* ----- Subsections as accordions ----- */

.wtc-subsection {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.07);
  border: 1px solid rgba(148, 163, 184, 0.2);
  overflow: hidden;
}

.wtc-subsection + .wtc-subsection {
  margin-top: 1rem;
}

.wtc-subsection-header {
  width: 100%;
  border: 0;
  background: #ffffff;
  padding: 0.9rem 1.1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  cursor: pointer;
}

.wtc-subsection-header-main {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  text-align: left;
}

.wtc-subsection-header h3 {
  font-size: 1rem;
  margin: 0;
  font-family: var(--heading-font);
  color: var(--heading-color);
}

.wtc-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  background: rgba(8, 145, 94, 0.08);
  color: var(--accent-color);
  font-size: 0.68rem;
  font-weight: 500;
}

.wtc-subsection-chevron {
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: rgba(51, 65, 85, 0.9);
  flex-shrink: 0;
  transition: all 0.2s ease;
}

.wtc-subsection-body {
  max-height: 0;
  overflow: hidden;
  padding-inline: 1.1rem;
  padding-bottom: 0;
  transition: max-height 0.28s ease, padding-bottom 0.24s ease;
}

.wtc-subsection.is-open .wtc-subsection-body {
  padding-bottom: 1rem;
}

.wtc-subsection.is-open .wtc-subsection-chevron {
  transform: rotate(90deg);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* body content inside accordion */

.wtc-subsection .wtc-text {
  margin: 0.4rem 0 0.7rem;
  font-size: 0.9rem;
  color: rgba(55, 65, 81, 0.98);
}

.wtc-list {
  margin: 0.5rem 0 0.6rem 1rem;
  padding: 0;
  font-size: 0.88rem;
  color: rgba(31, 41, 55, 0.98);
}

.wtc-list li + li {
  margin-top: 0.25rem;
}

/* ----- Image grid (professional gallery) ----- */

.wtc-image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.wtc-image-grid figure {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: linear-gradient(135deg, #e5f6ff, #e9fdf5);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
}

.wtc-image-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  /* aspect-ratio: 4 / 3; */
  /* transition: transform 0.25s ease; */
}

.wtc-image-grid figure:hover img {
  transform: scale(1.04);
}

.wtc-img-tag {
  position: absolute;
  left: 0.6rem;
  bottom: 0.55rem;
  padding: 0.16rem 0.4rem;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.75);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 500;
}

/* ----- Utilities ----- */

.mt-md {
  margin-top: 0.7rem;
}

    /* ====== BADGES & LABELS ====== */

    .wtc-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      margin-top: 0.4rem;
    }

    .wtc-tag {
      font-size: 0.72rem;
      padding: 0.1rem 0.5rem;
      border-radius: 999px;
      border: 1px solid rgba(0, 0, 0, 0.06);
      background: rgba(8, 145, 94, 0.03);
      color: rgba(33, 37, 41, 0.9);
    }

    /* ====== FOOT NOTES ====== */

    .wtc-note {
      font-size: 0.8rem;
      opacity: 0.9;
      margin-top: 0.4rem;
    }

    /* ====== UTILITIES ====== */

    .mt-sm {
      margin-top: 0.4rem;
    }

    .mt-md {
      margin-top: 0.8rem;
    }

    .mt-lg {
      margin-top: 1.2rem;
    }

    a.wtc-inline-link {
      color: var(--accent-color);
      text-decoration: none;
    }

    a.wtc-inline-link:hover {
      text-decoration: underline;
    }
    /* ===== Single-view mode: only one card visible ===== */

.wtc-section.single-view .wtc-subgrid {
  /* One column instead of left/right grid */
  grid-template-columns: minmax(0, 1fr);
}

.wtc-section.single-view .wtc-subsection {
  /* Centre the card and let it breathe */
  max-width: 970px;
  margin-inline: auto;
}

@media (max-width: 960px) {
  .wtc-section.single-view .wtc-subsection {
    max-width: 100%;
    margin-inline: 0;
  }
}