/* =========================================================
   PAYLANCE — Catalog header (premium B2B)
   Apple Business / Linear / Stripe · Inter typography
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

.catalog-header {
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;

  --ch-bg: #ffffff;
  --ch-text: #111827;
  --ch-muted: #6b7280;
  --ch-faint: #9ca3af;
  --ch-border: rgba(17, 24, 39, 0.08);
  --ch-border-strong: rgba(17, 24, 39, 0.14);
  --ch-shadow-sm: 0 1px 2px rgba(17, 24, 39, 0.04), 0 1px 3px rgba(17, 24, 39, 0.03);
  --ch-shadow-md: 0 8px 24px rgba(17, 24, 39, 0.06), 0 2px 6px rgba(17, 24, 39, 0.04);
  --ch-radius: 16px;
  --ch-radius-pill: 999px;
  --ch-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ch-ease: 300ms ease;

  position: relative;
  font-family: var(--ch-font);
  background: var(--ch-bg);
  border-bottom: 1px solid var(--ch-border);
  overflow: clip;
}

.catalog-header::before {
  content: '';
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(ellipse 520px 360px at 12% 82%, rgba(249, 250, 251, 0.9), transparent 58%),
    radial-gradient(ellipse 400px 280px at 50% 0%, rgba(17, 24, 39, 0.02), transparent 70%);
  animation: chAmbientShift 32s ease-in-out infinite alternate;
}

@keyframes chAmbientShift {
  0%   { opacity: 0.92; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.02) translate(10px, 6px); }
}

.catalog-header__container {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding-inline: var(--space-4);
  padding-block: var(--space-4) var(--space-3);
}

/* Hero row: title + intro */
.catalog-header__hero {
  margin-bottom: var(--space-2);
}

.catalog-header__intro {
  min-width: 0;
  max-width: 720px;
}

.catalog-header__crumbs {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0 0 var(--space-2);
  font: 500 12px/1 var(--ch-font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ch-muted);
}

.catalog-header__crumbs a {
  color: inherit;
  text-decoration: none;
  transition: color var(--ch-ease);
}

.catalog-header__crumbs a:hover {
  color: var(--ch-text);
}

.catalog-header__crumbs svg {
  color: var(--ch-faint);
}

.catalog-header__title {
  margin: 0;
  font: 700 clamp(28px, 3.2vw, 40px) / 1.08 var(--ch-font);
  letter-spacing: -0.035em;
  color: var(--ch-text);
}

.catalog-header__subtitle {
  margin: var(--space-1) 0 0;
  max-width: 640px;
  font: 400 15px/1.55 var(--ch-font);
  letter-spacing: -0.01em;
  color: var(--ch-muted);
}

.catalog-header__meta {
  margin: var(--space-2) 0 0;
  font: 500 13px/1.4 var(--ch-font);
  color: var(--ch-muted);
  font-feature-settings: "tnum";
}

.catalog-header__meta b {
  color: var(--ch-text);
  font-weight: 600;
}

/* Toolbar */
.catalog-header__toolbar {
  min-width: 0;
}

.catalog-header__controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

/* Search — primary visual weight */
.catalog-header__search {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 56px;
  padding: 6px 6px 6px var(--space-3);
  border-radius: var(--ch-radius);
  border: 1px solid var(--ch-border);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--ch-shadow-sm);
  transition: border-color var(--ch-ease), box-shadow var(--ch-ease), transform var(--ch-ease), background var(--ch-ease);
}

.catalog-header__search:hover {
  border-color: var(--ch-border-strong);
  box-shadow: var(--ch-shadow-md);
  transform: translateY(-2px);
}

.catalog-header__search:focus-within {
  background: #fff;
  border-color: rgba(17, 24, 39, 0.22);
  box-shadow: 0 0 0 4px rgba(17, 24, 39, 0.05), var(--ch-shadow-md);
  transform: translateY(-2px);
}

.catalog-header__search-icon {
  flex: 0 0 20px;
  color: var(--ch-muted);
}

.catalog-header__search input {
  flex: 1;
  min-width: 0;
  padding: 10px 4px;
  border: 0;
  outline: none;
  background: transparent;
  font: 500 16px/1.3 var(--ch-font);
  letter-spacing: -0.015em;
  color: var(--ch-text);
}

.catalog-header__search input::placeholder {
  color: var(--ch-faint);
}

.catalog-header__search-submit {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 44px;
  padding: 0 var(--space-3);
  border: 0;
  border-radius: 12px;
  background: var(--ch-text);
  color: #fff;
  font: 600 14px/1 var(--ch-font);
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: background var(--ch-ease), transform var(--ch-ease), box-shadow var(--ch-ease);
}

.catalog-header__search-submit:hover {
  background: #000;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(17, 24, 39, 0.18);
}

.catalog-header__search-submit svg {
  flex-shrink: 0;
}

.catalog-header__query {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 4px;
  padding: 4px 10px;
  border-radius: var(--ch-radius-pill);
  background: rgba(17, 24, 39, 0.06);
  font: 600 12px/1 var(--ch-font);
  color: var(--ch-text);
}

.catalog-header__query button {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--ch-muted);
  cursor: pointer;
  transition: background var(--ch-ease), color var(--ch-ease);
}

.catalog-header__query button:hover {
  background: rgba(17, 24, 39, 0.08);
  color: var(--ch-text);
}

/* Filter */
.catalog-header__filter {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 56px;
  padding: 0 var(--space-3);
  border-radius: var(--ch-radius);
  border: 1px solid var(--ch-border);
  background: #fff;
  color: var(--ch-text);
  font: 600 14px/1 var(--ch-font);
  letter-spacing: -0.01em;
  cursor: pointer;
  box-shadow: var(--ch-shadow-sm);
  transition: border-color var(--ch-ease), background var(--ch-ease), transform var(--ch-ease), box-shadow var(--ch-ease);
}

.catalog-header__filter:hover {
  border-color: var(--ch-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--ch-shadow-md);
}

.catalog-header__filter.is-open,
.catalog-header__filter.cat-filters-btn.is-open {
  background: var(--ch-text);
  border-color: var(--ch-text);
  color: #fff;
}

.catalog-header__filter.is-open svg {
  stroke: #fff;
}

.catalog-header__filter-badge {
  display: none !important;
}

/* Sort */
.catalog-header__sort {
  flex-shrink: 0;
  margin-left: auto;
  height: 56px;
  min-width: 168px;
  padding: 0 36px 0 var(--space-2);
  border-radius: var(--ch-radius);
  border: 1px solid var(--ch-border);
  background-color: #fff;
  color: var(--ch-text);
  font: 600 14px/1 var(--ch-font);
  letter-spacing: -0.01em;
  box-shadow: var(--ch-shadow-sm);
  cursor: pointer;
  transition: border-color var(--ch-ease), transform var(--ch-ease), box-shadow var(--ch-ease);
}

.catalog-header__sort:hover {
  border-color: var(--ch-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--ch-shadow-md);
}

.catalog-header__sort:focus {
  outline: none;
  border-color: rgba(17, 24, 39, 0.22);
  box-shadow: 0 0 0 4px rgba(17, 24, 39, 0.05);
}

/* Category chips */
.catalog-header__chips .cat-filters__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: var(--space-1) 0 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.catalog-header__chips .cat-filters__chips::-webkit-scrollbar {
  display: none;
}

.catalog-header .cat-chip {
  padding: 10px var(--space-2);
  border-radius: var(--ch-radius-pill);
  border: 1px solid var(--ch-border);
  background: #fff;
  color: var(--ch-muted);
  font: 600 13px/1 var(--ch-font);
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: color var(--ch-ease), border-color var(--ch-ease), background var(--ch-ease), transform var(--ch-ease), box-shadow var(--ch-ease);
}

.catalog-header .cat-chip:hover {
  color: var(--ch-text);
  border-color: var(--ch-border-strong);
  transform: translateY(-2px);
  box-shadow: var(--ch-shadow-sm);
}

.catalog-header .cat-chip.is-on {
  background: var(--ch-text);
  border-color: var(--ch-text);
  color: #fff;
  box-shadow: 0 4px 14px rgba(17, 24, 39, 0.14);
}

.catalog-header .cat-chip__count {
  display: none;
}

/* Filter panel inside header */
.catalog-header__panel {
  margin-top: var(--space-2);
}

.catalog-header__panel .cat-filters__label {
  font-family: var(--ch-font);
}

.catalog-header .cat-filters__reset {
  border-radius: var(--ch-radius-pill);
  transition: transform var(--ch-ease), background var(--ch-ease);
}

.catalog-header .cat-filters__reset:hover {
  transform: translateY(-2px);
}

/* Hide quick chips — less clutter */
.cat-quickbar {
  display: none !important;
}

/* Grid alignment */
.cat-main {
  max-width: 1440px;
  padding-inline: 32px;
}

/* Sticky compact on scroll */
.catalog-header.is-sticky {
  position: sticky;
  top: 69px;
  z-index: 15;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
}

.catalog-header.is-sticky .catalog-header__container {
  padding-block: var(--space-2);
}

.catalog-header.is-sticky .catalog-header__hero {
  display: none;
}

.catalog-header.is-sticky .catalog-header__search,
.catalog-header.is-sticky .catalog-header__filter,
.catalog-header.is-sticky .catalog-header__sort {
  min-height: 48px;
  height: 48px;
}

.catalog-header.is-sticky .catalog-header__search-submit {
  height: 38px;
}

/* Responsive — desktop first */
@media (max-width: 760px) {
  .catalog-header__container {
    padding-inline: var(--space-2);
    padding-block: var(--space-3) var(--space-2);
  }

  .catalog-header__controls {
    flex-wrap: wrap;
  }

  .catalog-header__search {
    flex: 1 1 100%;
    min-height: 52px;
  }

  .catalog-header__filter {
    height: 48px;
    padding: 0 var(--space-2);
  }

  .catalog-header__filter span:first-of-type {
    display: none;
  }

  .catalog-header__sort {
    flex: 1 1 auto;
    min-width: 0;
    height: 48px;
    margin-left: 0;
  }

  .catalog-header__search input {
    font-size: 15px;
  }

  .catalog-header__search-submit {
    height: 40px;
    padding: 0 var(--space-2);
    font-size: 13px;
  }

  .cat-main {
    padding-inline: 16px;
  }
}

@media (max-width: 480px) {
  .catalog-header__title {
    font-size: 24px;
  }

  .catalog-header__subtitle {
    font-size: 14px;
  }

  .catalog-header .cat-chip {
    padding: 8px 14px;
    font-size: 12.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .catalog-header::before {
    animation: none;
  }

  .catalog-header__search:hover,
  .catalog-header__search:focus-within,
  .catalog-header__filter:hover,
  .catalog-header__sort:hover,
  .catalog-header .cat-chip:hover,
  .catalog-header .cat-filters__reset:hover,
  .catalog-header__search-submit:hover {
    transform: none;
  }
}