/* ==========================================================================
   components.css - every UI block on the site

   One section per component, each self-contained. Class names follow a light
   BEM: .px-block, .px-block__part, .px-block--modifier.
   ========================================================================== */

/* ---- Buttons ------------------------------------------------------- */
.px-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--px-radius-pill);
  font-size: var(--px-fs-sm);
  font-weight: var(--px-weight-semibold);
  line-height: 1;
  cursor: pointer;
  transition: background var(--px-transition), border-color var(--px-transition),
    color var(--px-transition), transform var(--px-transition);
}
.px-btn:hover { transform: translateY(-1px); }

.px-btn--primary {
  background: var(--px-navy);
  border-color: var(--px-navy);
  color: var(--px-text-invert);
}
.px-btn--primary:hover { background: var(--px-navy-700); border-color: var(--px-navy-700); color: var(--px-text-invert); }

.px-btn--secondary {
  background: var(--px-blue);
  border-color: var(--px-blue);
  color: var(--px-text-invert);
}
.px-btn--secondary:hover { background: var(--px-teal); border-color: var(--px-teal); color: var(--px-text-invert); }

.px-btn--ghost {
  background: transparent;
  border-color: var(--px-border);
  color: var(--px-text);
}
.px-btn--ghost:hover { border-color: var(--px-navy); color: var(--px-navy); }

/* ---- Header / navigation --------------------------------------- */
.px-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--px-bg);
  border-bottom: 1px solid var(--px-border);
  transition: box-shadow var(--px-transition);
}
.px-header.is-scrolled { box-shadow: 0 1px 12px rgba(11, 31, 59, 0.08); }

.px-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: var(--px-header-h);
  padding-block: 0.75rem;
  /* span the full page width with only the page gutter as margin, so the logo
     sits on the left margin and the actions reach the right margin */
  max-width: none;
  padding-inline: var(--px-gutter);
}

.px-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;                 /* space between the icon mark and the name */
  flex-shrink: 0;
}
.px-header__logo-mark { height: 40px; width: auto; }
.px-header__logo-name {
  font-size: 1.85rem;           /* large + bold company name */
  font-weight: var(--px-weight-bold);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--px-navy);
  white-space: nowrap;
}
/* keep any bare <img> logo (older markup) sized sensibly too */
.px-header__logo img { height: 40px; width: auto; }

.px-nav {
  display: flex;
  flex: 1;
  justify-content: center;
  gap: 2rem;
}
/* menu-banner text: larger + bold across the nav links and the actions */
.px-nav__link {
  font-size: 1.0625rem;
  font-weight: var(--px-weight-bold);
  white-space: nowrap;
}
.px-nav__link:hover { color: var(--px-link); }

.px-header__actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-shrink: 0;
}
.px-header__actions-link {
  font-size: 1.0625rem;
  font-weight: var(--px-weight-bold);
}
.px-header__actions .px-btn {
  font-size: 1.0625rem;
  font-weight: var(--px-weight-bold);
}

/* burger + mobile drawer: works with no JS via the hidden checkbox,
   main.js layers on aria state, Escape-to-close and auto-close */
.px-nav-toggle { position: absolute; opacity: 0; pointer-events: none; }

.px-burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.4rem;
  border: 0;
  background: none;
  cursor: pointer;
}
.px-burger__bar {
  width: 22px;
  height: 2px;
  background: var(--px-navy);
  transition: transform var(--px-transition), opacity var(--px-transition);
}

.px-mobile-nav {
  display: none;
  flex-direction: column;
  padding-block: 0.5rem 1rem;
  border-top: 1px solid var(--px-border);
}
.px-mobile-nav__link {
  padding: 0.7rem 0;
  font-weight: var(--px-weight-medium);
}

@media (max-width: 900px) {
  .px-nav,
  .px-header__actions-link,
  .px-header__actions .px-btn { display: none; }
  .px-burger { display: flex; }
  .px-nav-toggle:checked ~ .px-mobile-nav { display: flex; }
  .px-nav-toggle:checked ~ .px-header__inner .px-burger__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .px-nav-toggle:checked ~ .px-header__inner .px-burger__bar:nth-child(2) { opacity: 0; }
  .px-nav-toggle:checked ~ .px-header__inner .px-burger__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

/* ---- Hero ----------------------------------------------------- */
.px-hero {
  background: var(--px-bg-invert);
  color: var(--px-text-invert);
  padding-block: 6rem;
}
.px-hero__inner {
  max-width: var(--px-container-narrow);
  margin-inline: auto;
  text-align: center;
}
.px-hero__title { margin-block: 1rem 0.75rem; }
.px-hero__intro { color: var(--px-text-invert-muted); font-size: var(--px-fs-lead); }

/* ---- Breadcrumb --------------------------------------------- */
.px-breadcrumb__list {
  display: flex;
  gap: 0.5rem;
  padding-block: 1rem;
  font-size: var(--px-fs-sm);
  color: var(--px-text-muted);
}
.px-breadcrumb__sep { opacity: 0.5; }
.px-breadcrumb__current { color: var(--px-text); font-weight: var(--px-weight-medium); }

/* ---- Category chips --------------------------------------- */
.px-chips {
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--px-border);
}
.px-chips__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}
.px-chip {
  padding: 0.5rem 1rem;
  border: 1px solid var(--px-border);
  border-radius: var(--px-radius-pill);
  font-size: var(--px-fs-sm);
  transition: border-color var(--px-transition), color var(--px-transition);
}
.px-chip:hover { border-color: var(--px-navy); color: var(--px-navy); }
.px-chip--active {
  background: var(--px-blue);
  border-color: var(--px-blue);
  color: var(--px-text-invert);
  font-weight: var(--px-weight-semibold);
}
.px-chip--active:hover { color: var(--px-text-invert); }
.px-chip__count { opacity: 0.65; }

/* ---- Card grid ------------------------------------------- */
.px-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.px-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--px-surface);
  border: 1px solid var(--px-border);
  border-radius: var(--px-radius-lg);
  overflow: hidden;
  box-shadow: var(--px-shadow);
  transition: transform var(--px-transition), box-shadow var(--px-transition);
}
.px-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--px-shadow-hover);
}
.px-card:hover .px-card__title { color: var(--px-blue); }

.px-card__media {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--px-cloud);
}
.px-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 1.5rem;
}

/* the title link is the card's primary link; ::after covers the whole card so
   empty areas are clickable, while pills sit above it (z-index) and stay
   independently clickable */
.px-card__title { margin-bottom: 0.75rem; transition: color var(--px-transition); }
.px-card__link { color: inherit; }
.px-card__link::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
}

.px-card__excerpt {
  flex: 1;
  margin-bottom: 0.75rem;
  font-size: var(--px-fs-sm);
  color: var(--px-text-muted);
}

/* ---- Taxonomy pill rows (scroll sideways, no visible scrollbar) ---- */
.px-card__cats,
.px-card__tags {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 0.4rem;
  margin-top: 0.5rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;          /* Firefox */
  -ms-overflow-style: none;       /* old Edge  */
}
.px-card__cats::-webkit-scrollbar,
.px-card__tags::-webkit-scrollbar { display: none; }

.px-pill {
  flex: 0 0 auto;                 /* never shrink -> row overflows -> scrolls */
  white-space: nowrap;
  padding: 0.2rem 0.6rem;
  border-radius: var(--px-radius-pill);
  font-size: 0.72rem;
  font-weight: var(--px-weight-semibold);
  line-height: 1.5;
  transition: filter var(--px-transition);
}
.px-pill:hover { filter: brightness(0.94); }
.px-pill--cat { background: var(--px-pill-cat-bg); color: var(--px-pill-cat-fg); }
.px-pill--tag { background: var(--px-pill-tag-bg); color: var(--px-pill-tag-fg); }
.px-pill--tag::before { content: "#"; opacity: 0.55; }

/* the requested blank line between the tag row and the date */
.px-card__spacer { height: 1rem; }

.px-card__meta {
  font-size: var(--px-fs-xs);
  color: var(--px-text-muted);
}
.px-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.6rem;
  font-size: var(--px-fs-sm);
  font-weight: var(--px-weight-semibold);
  color: var(--px-blue);
}
.px-card__cta svg { width: 14px; height: 14px; }

/* ---- Prompt image cards ---------------------------------- */
.px-card--prompt {
  aspect-ratio: 4 / 5;
  display: block;
  height: auto;
  min-height: 0;
  background: var(--px-navy);
}
.px-card--prompt .px-card__mediawrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.px-card--prompt .px-card__media {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  object-fit: cover;
  object-position: top center;
}
.px-card--prompt .px-card__body {
  position: absolute;
  inset: auto 0 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 0;
  padding: 0;
}
.px-card--prompt .px-card__title {
  order: 2;
  margin: 0;
  padding: 0.85rem 1rem 1rem;
  background: rgba(243, 244, 246, 0.96);
  color: #000;
}
.px-card--prompt:hover .px-card__title {
  color: #000;
}
.px-card--prompt .px-card__link {
  color: inherit;
}
.px-card--prompt .px-card__tags {
  order: 1;
  margin: 0;
  padding: 0.55rem 1rem;
  background: rgba(0, 0, 0, 0.7);
}
.px-card--prompt .px-pill--tag {
  background: #fff;
  color: #000;
}
.px-card--prompt .px-card__like {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.55rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.42);
  color: #fff;
  font-size: 0.92rem;
  font-weight: 800;
  line-height: 1;
}
.px-card--prompt .px-card__like svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}
.px-card--prompt .px-card__excerpt,
.px-card--prompt .px-card__cats,
.px-card--prompt .px-card__spacer,
.px-card--prompt .px-card__meta {
  display: none;
}

/* ---- Callout ------------------------------------------- */
.px-callout {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 2.5rem;
  background: var(--px-bg);
  border: 1px solid var(--px-border);
  border-left: 4px solid var(--px-blue);
  border-radius: var(--px-radius);
}
.px-callout__text { flex: 1; min-width: 220px; }
.px-callout__title { margin-bottom: 0.5rem; }
.px-callout__body { color: var(--px-text-muted); }

/* ---- Related links ---------------------------------- */
.px-related__head { max-width: var(--px-container-narrow); margin-inline: auto; }
.px-related__head p { margin-top: 0.75rem; }
.px-related__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}
.px-related__link {
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--px-border);
  border-radius: var(--px-radius-pill);
  font-size: var(--px-fs-sm);
}
.px-related__link:hover { border-color: var(--px-navy); color: var(--px-navy); }
.px-related__link--primary {
  background: var(--px-blue);
  border-color: var(--px-blue);
  color: var(--px-text-invert);
  font-weight: var(--px-weight-semibold);
}
.px-related__link--primary:hover { color: var(--px-text-invert); }

/* ---- Closing CTA banner --------------------------- */
.px-cta {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(120% 140% at 85% 15%, rgba(37, 99, 235, 0.35), transparent 55%),
    radial-gradient(90% 120% at 10% 90%, rgba(20, 184, 166, 0.28), transparent 50%),
    var(--px-navy);
  color: var(--px-text-invert);
  border-radius: var(--px-radius-lg);
}
.px-cta__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 3rem;
}
.px-cta__text { max-width: 40rem; }
.px-cta__text h2 { margin-bottom: 0.75rem; }
.px-cta__text p { color: var(--px-text-invert-muted); }

/* ---- Footer -------------------------------------- */
.px-footer {
  background: var(--px-navy);
  color: var(--px-text-invert);
  padding-block: 1.5rem;
}
.px-footer a { color: var(--px-text-invert-muted); }
.px-footer a:hover { color: var(--px-text-invert); }

.px-footer__legal {
  margin: 0;
  font-size: var(--px-fs-xs);
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}

/* ---- Small screens ------------------------------ */
@media (max-width: 640px) {
  .px-hero { padding-block: 4rem; }
  .px-cta__inner { padding: 2rem; }
  .px-callout { padding: 1.5rem; }
}