/* ==========================================================================
   Components: buttons, header, drawer, cards, badges, footer, toasts
   ========================================================================== */

/* --------------------------------------------------------------- Buttons -- */

.btn {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: var(--line-2);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  font: inherit;
  font-size: var(--t-sm);
  font-weight: 500;
  letter-spacing: var(--track-snug);
  line-height: 1;
  padding: 0.8rem 1.4rem;
  border: 1px solid var(--btn-bd);
  border-radius: var(--r-2);
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  transition: background-color var(--dur-1) var(--ease),
              border-color var(--dur-1) var(--ease),
              color var(--dur-1) var(--ease),
              transform var(--dur-1) var(--ease);
}

.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }

.btn:disabled,
.btn[aria-disabled='true'] {
  opacity: 0.5;
  pointer-events: none;
}

.btn svg { flex: none; }

.btn-primary {
  --btn-bg: var(--ink);
  --btn-fg: var(--paper);
  --btn-bd: var(--ink);
}
.btn-primary:hover { --btn-bg: var(--ink-2); --btn-bd: var(--ink-2); }

.btn-copper {
  --btn-bg: var(--copper);
  --btn-fg: #fff;
  --btn-bd: var(--copper);
}
.btn-copper:hover { --btn-bg: var(--copper-3); --btn-bd: var(--copper-3); }

.btn-secondary {
  --btn-bg: var(--paper);
  --btn-fg: var(--ink);
  --btn-bd: var(--line-2);
}
.btn-secondary:hover { --btn-bd: var(--ink); }

.btn-ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ink);
  --btn-bd: transparent;
}
.btn-ghost:hover { --btn-bg: var(--ink-soft); }

/* On dark backgrounds */
.on-ink .btn-secondary,
.section-ink .btn-secondary {
  --btn-bg: transparent;
  --btn-fg: var(--paper);
  --btn-bd: rgba(255, 255, 255, 0.28);
}
.on-ink .btn-secondary:hover,
.section-ink .btn-secondary:hover {
  --btn-bg: rgba(255, 255, 255, 0.08);
  --btn-bd: rgba(255, 255, 255, 0.5);
}

.on-ink .btn-primary,
.section-ink .btn-primary {
  --btn-bg: var(--paper);
  --btn-fg: var(--ink);
  --btn-bd: var(--paper);
}
.on-ink .btn-primary:hover,
.section-ink .btn-primary:hover { --btn-bg: var(--paper-3); --btn-bd: var(--paper-3); }

.btn-sm { padding: 0.55rem 0.9rem; font-size: var(--t-xs); }
.btn-lg { padding: 0.95rem 1.75rem; font-size: var(--t-base); }
.btn-block { width: 100%; }

/* Text link with an arrow that nudges on hover */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink);
  letter-spacing: var(--track-snug);
}

.link-arrow::after {
  content: '';
  width: 14px;
  height: 8px;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8'%3E%3Cpath d='M0 4h12M9 1l3 3-3 3' fill='none' stroke='%23000' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center;
  mask: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='8'%3E%3Cpath d='M0 4h12M9 1l3 3-3 3' fill='none' stroke='%23000' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center;
  transition: transform var(--dur-2) var(--ease-out);
}

.link-arrow:hover { color: var(--copper); }
.link-arrow:hover::after { transform: translateX(4px); }

/* ---------------------------------------------------------------- Header -- */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(255, 255, 255, 0.9);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease),
              background-color var(--dur-2) var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 4px 20px rgba(22, 24, 27, 0.05);
}

.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  gap: var(--s-6);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  /* Shrinks instead of forcing the header wider than the viewport; the
     search/menu buttons stay flex:none so they never get pushed off-screen
     (see .nav-actions). */
  flex: 1 1 auto;
  min-width: 0;
  margin-right: auto;
  overflow: hidden;
}

/* The supplied STI mark is a wide lockup, so it is sized by height and lets
   width follow. The company name sits beside it as the wordmark. */
.brand-mark {
  height: 34px;
  width: auto;
  flex: none;
}

.brand-text {
  display: grid;
  line-height: 1.05;
  padding-left: 0.7rem;
  border-left: 1px solid var(--line);
  min-width: 0;
}

.brand-name {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-sub {
  font-size: 0.6875rem;
  letter-spacing: var(--track-caps);
  text-transform: uppercase;
  color: var(--copper);
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-1);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-links a {
  display: block;
  position: relative;
  padding: 0.55rem 0.85rem;
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--ink-3);
  letter-spacing: var(--track-snug);
  border-radius: var(--r-2);
}

.nav-links a:hover { color: var(--ink); background: var(--ink-soft); }

.nav-links a[aria-current='page'] { color: var(--ink); }

.nav-links a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.18rem;
  height: 1.5px;
  background: var(--copper);
  border-radius: 2px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  flex: none;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  width: 40px;
  height: 40px;
  border: 1px solid transparent;
  border-radius: var(--r-2);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background-color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.icon-btn:hover { background: var(--ink-soft); }

/* Pulses the "Request a quote" nav button when an item is added -- the item
   count itself is shown as "Request a quote (N)" via [data-cart-label]. */
.nav-cta.is-bumped { animation: bump var(--dur-3) var(--ease-out); }

@keyframes bump {
  0%   { transform: scale(1); }
  35%  { transform: scale(1.45); }
  100% { transform: scale(1); }
}

/* Hamburger */
.burger {
  display: none;
  width: 40px;
  height: 40px;
  border: 0;
  background: transparent;
  cursor: pointer;
  padding: 10px 8px;
}

.burger span {
  display: block;
  height: 1.5px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-1) var(--ease);
}

.burger span + span { margin-top: 5px; }

.burger[aria-expanded='true'] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger[aria-expanded='true'] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded='true'] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* --------------------------------------------------- Header search panel -- */

.search-panel {
  display: grid;
  grid-template-rows: 0fr;
  border-top: 1px solid transparent;
  transition: grid-template-rows var(--dur-3) var(--ease-out), border-color var(--dur-2) var(--ease);
}

.search-panel.is-open {
  grid-template-rows: 1fr;
  border-top-color: var(--line);
}

.search-panel > div { overflow: hidden; }

.search-panel form {
  display: flex;
  gap: var(--s-2);
  padding-block: var(--s-4);
}

/* ------------------------------------------------------- Mobile drawer -- */

.drawer-backdrop {
  position: fixed;
  inset: 0;
  z-index: var(--z-drawer);
  background: rgba(22, 24, 27, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-2) var(--ease), visibility var(--dur-2);
}

.drawer-backdrop.is-open { opacity: 1; visibility: visible; }

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: calc(var(--z-drawer) + 1);
  width: min(400px, 88vw);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--dur-3) var(--ease-out);
  box-shadow: -18px 0 46px rgba(22, 24, 27, 0.16);
}

.drawer.is-open { transform: translateX(0); }

.drawer-head {
  height: var(--nav-h);
  flex: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--gutter);
  border-bottom: 1px solid var(--line);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--s-5) var(--gutter) var(--s-8);
}

.drawer-nav {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--s-6);
  display: grid;
}

.drawer-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--s-4) 0;
  font-size: var(--t-xl);
  font-weight: 500;
  letter-spacing: var(--track-tight);
  color: var(--ink);
  border-bottom: 1px solid var(--line);
}

.drawer-nav a:hover { color: var(--copper); }
.drawer-nav a[aria-current='page'] { color: var(--copper); }

.drawer-meta {
  display: grid;
  gap: var(--s-2);
  font-size: var(--t-sm);
  color: var(--muted);
  margin-top: var(--s-6);
}

.drawer-meta a { color: var(--ink); font-weight: 500; }
.drawer-meta a:hover { color: var(--copper); }

body.is-locked { overflow: hidden; }

/* ---------------------------------------------------------- Badges ------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--t-xs);
  font-weight: 500;
  line-height: 1;
  padding: 0.34rem 0.6rem;
  border-radius: var(--r-2);
  letter-spacing: var(--track-snug);
  white-space: nowrap;
}

.badge::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.badge-in-stock      { color: var(--ok);     background: var(--ok-wash); }
.badge-limited       { color: var(--warn);   background: var(--warn-wash); }
.badge-on-request    { color: var(--info);   background: var(--info-wash); }
.badge-out-of-stock  { color: var(--off);    background: var(--off-wash); }
.badge-discontinued  { color: var(--danger); background: var(--danger-wash); }

.badge-featured {
  color: var(--copper);
  background: var(--copper-wash);
}
.badge-featured::before { display: none; }

/* ----------------------------------------------------------- Price ------- */

.price {
  font-size: var(--t-lg);
  font-weight: 600;
  color: var(--ink);
  letter-spacing: var(--track-snug);
  font-variant-numeric: tabular-nums;
}

.price small {
  font-size: var(--t-xs);
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0;
}

.price-prefix {
  display: block;
  font-size: var(--t-xs);
  font-weight: 500;
  color: var(--muted);
  letter-spacing: var(--track-wide);
  text-transform: uppercase;
  margin-bottom: 0.15rem;
}

.price-request {
  font-size: var(--t-sm);
  font-weight: 500;
  color: var(--copper);
  letter-spacing: var(--track-snug);
}

/* ------------------------------------------------------ Product card ----- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: var(--s-5);
}

.card-grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
}

.product-card {
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  overflow: hidden;
  transition: border-color var(--dur-2) var(--ease),
              box-shadow var(--dur-2) var(--ease),
              transform var(--dur-2) var(--ease-out);
}

.product-card:hover {
  border-color: var(--line-2);
  box-shadow: var(--e-3);
  transform: translateY(-3px);
}

.product-card__media {
  position: relative;
  display: block;
  aspect-ratio: 4 / 3;
  background: var(--paper-3);
  overflow: hidden;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-4) var(--ease-out);
}

.product-card:hover .product-card__media img { transform: scale(1.045); }

.product-card__flags {
  position: absolute;
  top: var(--s-3);
  left: var(--s-3);
  display: flex;
  gap: var(--s-2);
}

.product-card__flags .badge {
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: var(--e-1);
}

.product-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--s-5);
  gap: var(--s-2);
}

.product-card__cat {
  font-size: var(--t-eyebrow);
  font-weight: 600;
  letter-spacing: var(--track-caps);
  text-transform: uppercase;
  color: var(--muted-2);
}

.product-card__cat:hover { color: var(--copper); }

.product-card__title {
  font-size: var(--t-h4);
  font-weight: 600;
  line-height: var(--lh-snug);
  letter-spacing: var(--track-snug);
}

.product-card__title a::after {
  content: '';
  position: absolute;
  inset: 0;
}

.product-card__desc {
  font-size: var(--t-sm);
  color: var(--muted);
  line-height: var(--lh-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-2) var(--s-3);
  margin-top: auto;
  padding-top: var(--s-4);
  /* Long availability labels drop to their own line rather than crushing the
     price into three words on one column. */
  flex-wrap: wrap;
}

.product-card__meta > div { flex: 0 1 auto; min-width: 0; }
.product-card__meta .badge { flex: none; }
.product-card__meta .price,
.product-card__meta .price-request { white-space: nowrap; }

.product-card__actions {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-2);
  padding: 0 var(--s-5) var(--s-5);
}

/* ----------------------------------------------------- Category card ----- */

.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 260px;
  padding: var(--s-6);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  isolation: isolate;
}

.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transition: transform var(--dur-4) var(--ease-out);
}

.category-card::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(to top, rgba(16, 18, 20, 0.92) 6%, rgba(16, 18, 20, 0.5) 48%, rgba(16, 18, 20, 0.18) 100%);
  transition: opacity var(--dur-2) var(--ease);
}

.category-card:hover img { transform: scale(1.05); }
.category-card:hover::after { opacity: 0.86; }

.category-card h3 {
  color: var(--paper);
  font-size: var(--t-h4);
  margin-bottom: var(--s-2);
}

.category-card p {
  font-size: var(--t-sm);
  color: rgba(255, 255, 255, 0.74);
  line-height: var(--lh-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.category-card__count {
  font-size: var(--t-eyebrow);
  font-weight: 600;
  letter-spacing: var(--track-caps);
  text-transform: uppercase;
  color: var(--copper-2);
  margin-bottom: var(--s-3);
}

.category-card a::after {
  content: '';
  position: absolute;
  inset: 0;
}

.category-card .link-arrow {
  color: var(--paper);
  margin-top: var(--s-4);
}

/* -------------------------------------------------------- Breadcrumbs ---- */

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: var(--t-xs);
  color: var(--muted-2);
}

.breadcrumbs li { display: flex; align-items: center; gap: 0.4rem; }

.breadcrumbs li + li::before {
  content: '';
  width: 4px;
  height: 4px;
  border-right: 1px solid currentColor;
  border-top: 1px solid currentColor;
  transform: rotate(45deg);
  opacity: 0.6;
}

.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--copper); }
.breadcrumbs [aria-current='page'] { color: var(--ink); font-weight: 500; }

/* ------------------------------------------------------------- States ---- */

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--s-9) var(--s-5);
  border: 1px dashed var(--line-2);
  border-radius: var(--r-3);
  background: var(--paper-2);
}

.empty-state h3 { font-size: var(--t-h4); margin-bottom: var(--s-2); }
.empty-state p { color: var(--muted); font-size: var(--t-sm); max-width: 44ch; margin: 0 auto var(--s-5); }

.skeleton-card {
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  overflow: hidden;
  background: var(--paper);
}

.skeleton-card::before {
  content: '';
  display: block;
  aspect-ratio: 4 / 3;
  background: var(--paper-3);
}

.skeleton-card::after {
  content: '';
  display: block;
  height: 92px;
  margin: var(--s-5);
  border-radius: var(--r-2);
  background: var(--paper-3);
}

.skeleton-card { animation: pulse 1.5s var(--ease) infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}

/* -------------------------------------------------------------- Toast ---- */

.toast-region {
  position: fixed;
  bottom: var(--s-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: grid;
  gap: var(--s-2);
  width: min(420px, calc(100vw - 2rem));
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  padding: 0.85rem 1rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--r-2);
  font-size: var(--t-sm);
  box-shadow: var(--e-3);
  pointer-events: auto;
  animation: toast-in var(--dur-3) var(--ease-out);
}

.toast.is-leaving { animation: toast-out var(--dur-2) var(--ease) forwards; }

.toast a {
  margin-left: auto;
  color: var(--copper-2);
  font-weight: 500;
  white-space: nowrap;
}

.toast a:hover { color: #fff; }

.toast svg { flex: none; color: var(--copper-2); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}

@keyframes toast-out {
  to { opacity: 0; transform: translateY(8px); }
}

/* ------------------------------------------------------ WhatsApp FAB ----- */

.whatsapp-fab {
  position: fixed;
  right: var(--s-5);
  bottom: var(--s-5);
  z-index: calc(var(--z-toast) - 1);
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  background: #25d366;
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 8px 24px rgba(37, 211, 102, 0.35);
  transition: transform var(--dur-2) var(--ease-out);
}

.whatsapp-fab:hover { transform: scale(1.07); }

/* ------------------------------------------------------------- Footer ---- */

.site-footer {
  background: var(--ink);
  color: var(--muted-invert);
  padding-top: var(--s-9);
  font-size: var(--t-sm);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: var(--s-8) var(--s-6);
  padding-bottom: var(--s-8);
}

.footer-mark {
  height: 40px;
  margin-bottom: var(--s-4);
}

.footer-brand .brand-name {
  display: block;
  color: var(--paper);
  letter-spacing: 0.03em;
  font-size: 0.8125rem;
}

.footer-brand p {
  margin-top: var(--s-4);
  color: var(--muted-invert);
  line-height: var(--lh-relaxed);
  max-width: 34ch;
}

.footer-col h4 {
  font-size: var(--t-eyebrow);
  font-weight: 600;
  letter-spacing: var(--track-caps);
  text-transform: uppercase;
  color: var(--paper);
  margin-bottom: var(--s-4);
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--s-3);
}

.footer-col a { color: var(--muted-invert); }
.footer-col a:hover { color: var(--paper); }

.footer-col address {
  font-style: normal;
  line-height: var(--lh-relaxed);
  color: var(--muted-invert);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding-block: var(--s-5);
  border-top: 1px solid var(--line-dark);
  font-size: var(--t-xs);
  color: var(--muted-2);
}

.footer-bottom ul {
  display: flex;
  gap: var(--s-5);
  list-style: none;
  padding: 0;
  margin: 0;
}

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