/* ================================================================
   OBIETTIVO OTTICA — Catalog Styles
   Sticky filters, product grid, search
   ================================================================ */

/* ================================================================
   CATALOG LAYOUT
   ================================================================ */

.catalog-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  align-items: start;
}

.catalog-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  max-height: calc(100vh - var(--header-h) - 48px);
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) transparent;
}

.catalog-sidebar::-webkit-scrollbar { width: 4px; }
.catalog-sidebar::-webkit-scrollbar-track { background: transparent; }
.catalog-sidebar::-webkit-scrollbar-thumb { background: var(--c-border); border-radius: 2px; }

.catalog-main { min-width: 0; }

/* ================================================================
   SEARCH
   ================================================================ */

.catalog-search {
  position: relative;
  margin-bottom: 24px;
}

.catalog-search input {
  width: 100%;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  padding: 10px 14px 10px 38px;
  font-size: 14px;
  font-family: var(--f-sans);
  color: var(--c-text);
  border-radius: var(--radius);
  transition: border-color 200ms;
}

.catalog-search input::placeholder { color: #BABAB7; }
.catalog-search input:focus {
  outline: none;
  border-color: var(--c-accent);
}

.catalog-search__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--c-muted);
  font-size: 16px;
  pointer-events: none;
}

/* ================================================================
   FILTER SECTIONS
   ================================================================ */

.filter-section {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--c-border);
}

.filter-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.filter-heading {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-clear-btn {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  text-transform: uppercase;
  cursor: pointer;
  background: none;
  border: none;
  transition: color 200ms;
}
.filter-clear-btn:hover { color: var(--c-accent-hover); }

/* ================================================================
   FILTER CHECKBOXES
   ================================================================ */

.filter-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.filter-item {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.filter-item input[type="checkbox"] {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--c-border);
  appearance: none;
  -webkit-appearance: none;
  border-radius: 1px;
  cursor: pointer;
  transition: border-color 150ms, background 150ms;
  flex-shrink: 0;
  position: relative;
}

.filter-item input:checked {
  border-color: var(--c-accent);
  background: var(--c-accent);
}

.filter-item input:checked::after {
  content: '';
  position: absolute;
  width: 7px;
  height: 4px;
  border-left: 1.5px solid #fff;
  border-bottom: 1.5px solid #fff;
  transform: rotate(-45deg) translate(1px, -1px);
  top: 3px;
  left: 1px;
}

.filter-label {
  font-size: 13px;
  color: var(--c-muted);
  cursor: pointer;
  flex: 1;
  transition: color 150ms;
}

.filter-item:hover .filter-label { color: var(--c-text); }

.filter-count {
  font-family: var(--f-mono);
  font-size: 10px;
  color: var(--c-muted);
  opacity: 0.6;
}

/* ================================================================
   FILTER RADIO
   ================================================================ */

.filter-radio-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.filter-radio {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.filter-radio input[type="radio"] {
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--c-border);
  appearance: none;
  -webkit-appearance: none;
  border-radius: 50%;
  cursor: pointer;
  transition: border-color 150ms, box-shadow 150ms;
  flex-shrink: 0;
}

.filter-radio input:checked {
  border-color: var(--c-accent);
  box-shadow: inset 0 0 0 3px var(--c-bg), inset 0 0 0 6px var(--c-accent);
}

/* ================================================================
   PRICE RANGE
   ================================================================ */

.price-range {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.price-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.price-input {
  padding: 7px 10px;
  border: 1px solid var(--c-border);
  font-size: 12px;
  font-family: var(--f-mono);
  color: var(--c-text);
  border-radius: var(--radius);
  transition: border-color 200ms;
}

.price-input:focus {
  outline: none;
  border-color: var(--c-accent);
}

/* ================================================================
   RESET ALL FILTERS
   ================================================================ */

.filters-reset {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px 0;
  transition: color 200ms;
  display: flex;
  align-items: center;
  gap: 6px;
}
.filters-reset:hover { color: var(--c-accent); }

/* ================================================================
   CATALOG HEADER (results count + sort)
   ================================================================ */

.catalog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--c-border);
  gap: 12px;
  flex-wrap: wrap;
}

.catalog-count {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-muted);
  letter-spacing: 0.04em;
}

.catalog-count strong {
  color: var(--c-primary);
  font-weight: 500;
}

.catalog-sort {
  display: flex;
  align-items: center;
  gap: 8px;
}

.catalog-sort label {
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.catalog-sort select {
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  padding: 6px 28px 6px 10px;
  font-size: 12px;
  font-family: var(--f-mono);
  color: var(--c-text);
  border-radius: var(--radius);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='8' height='5' viewBox='0 0 8 5' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L4 4L7 1' stroke='%236B6B68' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color 200ms;
}

.catalog-sort select:focus {
  outline: none;
  border-color: var(--c-accent);
}

/* ================================================================
   PRODUCT GRID (catalog)
   ================================================================ */

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

/* No results state */
.catalog-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  border: 1px dashed var(--c-border);
}

.catalog-empty i {
  font-size: 40px;
  color: var(--c-muted);
  opacity: 0.4;
  margin-bottom: 12px;
}

.catalog-empty h4 {
  font-size: 18px;
  color: var(--c-muted);
  margin-bottom: 6px;
}

.catalog-empty p {
  font-size: 14px;
  color: var(--c-muted);
  font-family: var(--f-mono);
}

/* Filter active badge */
.filter-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--c-bg);
  background: var(--c-primary);
  padding: 3px 8px;
  border-radius: 2px;
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--f-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--c-muted);
  border: 1px solid var(--c-border);
  padding: 4px 8px;
  cursor: pointer;
  transition: border-color 150ms, color 150ms;
}

.active-filter-tag:hover {
  border-color: var(--c-primary);
  color: var(--c-primary);
}

/* Product availability badge */
.avail-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 7px;
}

.avail-badge--ok {
  color: #2E7D5A;
  background: rgba(46,125,90,0.08);
  border: 1px solid rgba(46,125,90,0.2);
}

.avail-badge--busy {
  color: #B86A1A;
  background: rgba(184,106,26,0.08);
  border: 1px solid rgba(184,106,26,0.2);
}

/* Catalog product card extended info */
.prod-card__tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.prod-tag {
  font-family: var(--f-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-muted);
  border: 1px solid var(--c-border);
  padding: 2px 6px;
}

/* ================================================================
   RESPONSIVE CATALOG
   ================================================================ */

@media (max-width: 1100px) {
  .catalog-layout { grid-template-columns: 240px 1fr; }
  .catalog-grid   { grid-template-columns: repeat(2, 1fr); }
}

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

  .catalog-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    border: 1px solid var(--c-border);
    padding: 16px;
    margin-bottom: 24px;
  }

  .sidebar-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    font-size: 12px;
    font-family: var(--f-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-text);
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px 0;
  }

  .sidebar-body {
    display: none;
    margin-top: 12px;
  }

  .sidebar-body.open { display: block; }

  .catalog-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}

@media (max-width: 480px) {
  .catalog-grid { grid-template-columns: 1fr; }
}