/* ═══════════════════════════════════════════════════
   products.css — Products page layout & components
   ═══════════════════════════════════════════════════ */

/* ─────────── Page Hero ─────────── */
.products-hero {
  position: relative;
  z-index: 2;
  padding: calc(var(--nav-height) + 60px) 0 56px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  transition: background var(--transition-theme), border-color var(--transition-theme);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 28px;
  transition: color 0.25s ease;
}
.back-link:hover { color: var(--accent); }
.back-link svg { width: 16px; height: 16px; }

.products-hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4.5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin: 12px 0 20px;
  transition: color var(--transition-theme);
}
.products-hero__title em { font-style: italic; }

.products-hero__sub {
  font-size: clamp(0.88rem, 1.2vw, 1rem);
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.7;
  max-width: 520px;
  transition: color var(--transition-theme);
}

/* ─────────── Layout ─────────── */
.products-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  align-items: start;
  min-height: 100vh;
}

/* ─────────── Sidebar ─────────── */
.products-sidebar {
  position: sticky;
  top: var(--nav-height);
  height: calc(100vh - var(--nav-height));
  overflow-y: auto;
  border-right: 1px solid var(--border);
  transition: border-color var(--transition-theme);
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.products-sidebar::-webkit-scrollbar { width: 4px; }
.products-sidebar::-webkit-scrollbar-track { background: transparent; }
.products-sidebar::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }

.products-sidebar__inner {
  padding: 36px 24px 48px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.products-sidebar__label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
  padding-left: 12px;
  transition: color var(--transition-theme);
}

/* ─────────── Sidebar Nav ─────────── */
.products-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.products-nav__item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
  cursor: pointer;
  text-decoration: none;
}
.products-nav__item:hover {
  background: var(--bg-card-hover);
  border-left-color: var(--border-strong);
}
.products-nav__item.active {
  background: var(--accent-soft);
  border-left-color: var(--accent);
}
.products-nav__item.active .products-nav__num,
.products-nav__item.active .products-nav__name {
  color: var(--accent);
}

.products-nav__num {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  flex-shrink: 0;
  width: 20px;
  transition: color 0.25s ease;
}

.products-nav__name {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--text-secondary);
  line-height: 1.3;
  transition: color 0.25s ease;
}

.sidebar-cta {
  margin-top: 24px;
  font-size: 0.82rem;
  padding: 12px 20px;
  text-align: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

/* ─────────── Main Content ─────────── */
.products-content {
  padding: 0 clamp(32px, 5vw, 72px) 80px;
  background: var(--bg);
  transition: background var(--transition-theme);
}

/* ─────────── Product Section ─────────── */
.product-section {
  padding: 64px 0;
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.product-section--accent {
  position: relative;
}
.product-section--accent::before {
  content: '';
  position: absolute;
  inset: 0 -72px;
  background: var(--accent-soft);
  border-radius: var(--radius-xl);
  z-index: -1;
  pointer-events: none;
}

.product-section__header {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 28px;
}

.product-section__num {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  padding: 4px 10px;
  border-radius: 999px;
  flex-shrink: 0;
  margin-top: 4px;
  transition: color var(--transition-theme), background var(--transition-theme), border-color var(--transition-theme);
}

.product-section__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--text-primary);
  transition: color var(--transition-theme);
}

.product-section__sub {
  font-size: 0.83rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 6px;
  transition: color var(--transition-theme);
}

.product-section__icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  opacity: 0.4;
  flex-shrink: 0;
  margin-left: auto;
  margin-top: 4px;
  transition: color var(--transition-theme);
}

.product-section__desc {
  font-size: clamp(0.88rem, 1.1vw, 0.96rem);
  line-height: 1.8;
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 720px;
  margin-bottom: 40px;
  transition: color var(--transition-theme);
}

/* ─────────── Product Items ─────────── */
.product-items {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.product-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: background 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease-quint);
}
.product-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  transform: translateX(4px);
}

.product-item__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  transition: background var(--transition-theme), border-color var(--transition-theme), color var(--transition-theme);
}
.product-item__icon svg { width: 18px; height: 18px; }

.product-item h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  transition: color var(--transition-theme);
}
.product-item p {
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--text-secondary);
  font-weight: 300;
  transition: color var(--transition-theme);
}

/* ─────────── Divider ─────────── */
.product-divider {
  height: 1px;
  background: var(--border);
  transition: background var(--transition-theme);
}

/* ─────────── Mobile sidebar toggle ─────────── */
.sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 500;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 600;
  border: none;
  border-radius: 999px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: transform 0.25s var(--ease-quint), box-shadow 0.25s ease;
}
.sidebar-toggle svg { width: 16px; height: 16px; }
.sidebar-toggle:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4); }

/* ─────────── Mobile Sidebar Overlay ─────────── */
.products-sidebar.mobile-open {
  position: fixed;
  inset: 0;
  z-index: 900;
  height: 100vh;
  border-right: none;
  background: var(--bg);
  overflow-y: auto;
}
.products-sidebar.mobile-open .products-sidebar__inner {
  padding-top: calc(var(--nav-height) + 24px);
}

/* ═══════════════════ RESPONSIVE ═══════════════════ */
@media (max-width: 1024px) {
  .products-layout {
    grid-template-columns: 240px 1fr;
  }
}

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

  .products-sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 900;
    border-right: none;
    background: var(--bg);
    overflow-y: auto;
  }
  .products-sidebar.mobile-open {
    display: block;
  }

  .sidebar-toggle { display: flex; }

  .products-content {
    padding: 0 24px 80px;
  }

  .product-section--accent::before {
    inset: 0 -24px;
  }

  .product-section__header {
    flex-wrap: wrap;
  }
  .product-section__icon { display: none; }

  .product-item { padding: 20px; }
}

@media (max-width: 480px) {
  .products-hero__title { font-size: clamp(1.7rem, 7vw, 2.4rem); }
  .product-section { padding: 48px 0; }
  .product-item { gap: 16px; }
}

/* ═══════════════════ COLOR PALETTE ENHANCEMENTS ═══════════════════ */

/* ═══════════════════ COLOUR ACCENTS (white · green · grey + blue) ═══════════════════ */

/* Hero title italic — green, no gradient */
.products-hero__title em { color: var(--accent); font-style: italic; }

/* Page hero band — subtle blue tint */
.products-hero { background: linear-gradient(180deg, rgba(37,99,235,0.04) 0%, var(--bg) 100%); }

/* Section num badges — alternate green / blue */
.product-section:nth-child(odd)  .product-section__num { color: var(--accent); background: var(--accent-soft); border-color: var(--accent-border); }
.product-section:nth-child(even) .product-section__num { color: var(--blue);   background: var(--blue-soft);   border-color: var(--blue-border); }

/* Section icons — alternate green / blue */
.product-section:nth-child(odd)  .product-section__icon { color: var(--accent); }
.product-section:nth-child(even) .product-section__icon { color: var(--blue); }

/* Product item icons — alternate green / blue */
.product-section:nth-child(even) .product-item__icon { background: var(--blue-soft); border-color: var(--blue-border); color: var(--blue); }

/* Sidebar active items — alternate green / blue */
.products-nav__item:nth-child(odd).active  { background: var(--accent-soft); border-left-color: var(--accent); }
.products-nav__item:nth-child(even).active { background: var(--blue-soft);   border-left-color: var(--blue); }

.products-nav__item:nth-child(odd).active  .products-nav__num,
.products-nav__item:nth-child(odd).active  .products-nav__name  { color: var(--accent); }
.products-nav__item:nth-child(even).active .products-nav__num,
.products-nav__item:nth-child(even).active .products-nav__name  { color: var(--blue); }