/* Pro Purpose® Impact Widget — Round 4 "CODE" design.
   Greyscale image cards with an overlaid big number + descriptor;
   static grid for 1–3 projects, carousel for 4+; light/dark themes. */

:root {
  --pp-font: 'Helvetica Neue', Arial, system-ui, sans-serif;
  --pp-radius: 14px;
  --pp-gap: 16px;
  --pp-accent: #1d6f5c; /* Pro Purpose green — overridable per partner */
  --pp-static-count: 3;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

.pp-widget {
  font-family: var(--pp-font);
  padding: 28px 24px 22px;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

/* ── Theme tokens ──────────────────────────────────────────────────────── */
.pp-theme-light {
  --pp-bg: #ffffff;
  --pp-fg: #14110f;
  --pp-muted: #6b6b6b;
  --pp-panel: #f5f3f0;
  --pp-card-fg: #ffffff;
  --pp-dot: #c9c4bd;
}
.pp-theme-dark {
  --pp-bg: #14110f;
  --pp-fg: #f6f4f1;
  --pp-muted: #a9a39b;
  --pp-panel: #1f1b18;
  --pp-card-fg: #ffffff;
  --pp-dot: #4a443d;
}

.pp-widget {
  background: var(--pp-bg);
  color: var(--pp-fg);
}

/* ── Header ────────────────────────────────────────────────────────────── */
.pp-header {
  text-align: center;
  margin-bottom: 18px;
}
.pp-title {
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0;
}
.pp-reg {
  font-size: 0.55em;
  vertical-align: super;
}
.pp-subheading {
  margin: 6px 0 0;
  color: var(--pp-muted);
  font-size: 0.98rem;
}

/* ── Panel ─────────────────────────────────────────────────────────────── */
.pp-panel {
  background: var(--pp-panel);
  border-radius: var(--pp-radius);
  padding: 22px 20px;
}
.pp-panel-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 16px;
  text-align: center;
}

/* ── States ────────────────────────────────────────────────────────────── */
/* The [hidden] attribute must beat the display:flex/grid rules below, which
   would otherwise keep hidden states (loading spinner, viewport) visible. */
[hidden] {
  display: none !important;
}
.pp-state {
  text-align: center;
  color: var(--pp-muted);
  padding: 28px 8px;
  font-size: 0.95rem;
}
.pp-loading {
  display: flex;
  gap: 10px;
  align-items: center;
  justify-content: center;
}
.pp-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--pp-dot);
  border-top-color: var(--pp-accent);
  border-radius: 50%;
  animation: pp-spin 0.8s linear infinite;
}
@keyframes pp-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── Cards viewport ────────────────────────────────────────────────────── */
.pp-cards-viewport {
  position: relative;
  display: flex;
  align-items: center;
}
.pp-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--pp-gap);
  width: 100%;
}

/* Static layout: 1–3 columns, sized to the project count. */
.pp-layout-static .pp-cards {
  grid-template-columns: repeat(var(--pp-static-count), 1fr);
}

/* Carousel: horizontal scroll-snap row. */
.pp-layout-carousel .pp-cards {
  grid-auto-flow: column;
  grid-auto-columns: calc((100% - 2 * var(--pp-gap)) / 3);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}
.pp-layout-carousel .pp-cards::-webkit-scrollbar {
  display: none;
}
.pp-layout-carousel .pp-card {
  scroll-snap-align: start;
}

/* ── Card ──────────────────────────────────────────────────────────────── */
.pp-card {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--pp-radius);
  overflow: hidden;
  min-height: 220px;
}
.pp-card-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(100%); /* Round 4: greyscale imagery */
}
.pp-card-image--placeholder {
  background: linear-gradient(160deg, #4a4a4a, #2a2a2a);
}
.pp-card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 18px 16px;
  color: var(--pp-card-fg);
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.78) 0%,
    rgba(0, 0, 0, 0.35) 45%,
    rgba(0, 0, 0, 0.08) 100%
  );
}
.pp-card-value {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}
.pp-card-unit {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 2px;
}
.pp-card-descriptor {
  margin: 8px 0 0;
  font-size: 0.9rem;
  line-height: 1.3;
  opacity: 0.92;
}

/* ── Nav arrows ────────────────────────────────────────────────────────── */
.pp-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: var(--pp-bg);
  color: var(--pp-fg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}
.pp-nav-prev {
  left: -8px;
}
.pp-nav-next {
  right: -8px;
}
.pp-nav:hover {
  background: var(--pp-accent);
  color: #fff;
}

/* ── Dots ──────────────────────────────────────────────────────────────── */
.pp-dots {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: 16px;
}
.pp-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--pp-dot);
  cursor: pointer;
}
.pp-dot--active {
  background: var(--pp-accent);
  transform: scale(1.25);
}

/* ── Footer ────────────────────────────────────────────────────────────── */
.pp-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}
.pp-learn-more {
  display: inline-block;
  padding: 11px 26px;
  border: 2px solid var(--pp-fg);
  border-radius: 999px;
  color: var(--pp-fg);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  transition: background 0.15s, color 0.15s;
}
.pp-learn-more:hover {
  background: var(--pp-fg);
  color: var(--pp-bg);
}
.pp-lockup {
  margin: 0;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--pp-muted);
}

/* ── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .pp-layout-static .pp-cards {
    grid-template-columns: repeat(min(var(--pp-static-count), 2), 1fr);
  }
  .pp-layout-carousel .pp-cards {
    grid-auto-columns: calc((100% - var(--pp-gap)) / 2);
  }
}
@media (max-width: 560px) {
  .pp-widget {
    padding: 20px 14px;
  }
  .pp-layout-static .pp-cards {
    grid-template-columns: 1fr;
  }
  .pp-layout-carousel .pp-cards {
    grid-auto-columns: 100%;
  }
  .pp-footer {
    justify-content: center;
  }
}