/* ============================================================================
   STS Prepayment Meters (prepayment-meter.php) — product page
   Brand: --clr-primary / #e51a1a · Sora headings · Inter body
   ============================================================================ */

.ppm-page {
  --ppm-font-display: 'Sora', 'Inter', sans-serif;
  --ppm-font-body: 'Inter', 'Segoe UI', sans-serif;
  --ppm-section-y: clamp(3.25rem, 6.5vw, 5.25rem);
  --ppm-radius: var(--radius-2xl, 12px);
  background: var(--clr-white);
  font-family: var(--ppm-font-body);
  color: var(--clr-text-body);
}

.ppm-page h1,
.ppm-page h2,
.ppm-page h3,
.ppm-page h4 {
  font-family: var(--ppm-font-display);
  color: var(--clr-black);
}

/* ── Shared section headers ───────────────────────────────────────────────── */

.ppm-section-head {
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
}

.ppm-section-head--center {
  text-align: center;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.ppm-section-head--center .section-label {
  justify-content: center;
}

.ppm-section-head h2 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.55rem, 3.2vw, 2.15rem);
  font-weight: 700;
  letter-spacing: -0.028em;
  line-height: 1.2;
}

.ppm-section-head p {
  margin: 0.85rem auto 0;
  max-width: 40rem;
  font-size: clamp(0.98rem, 0.3vw + 0.92rem, 1.06rem);
  line-height: 1.7;
  color: var(--clr-text-body);
}

.ppm-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  font-family: var(--ppm-font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: var(--clr-primary-bg);
  border: 1px solid var(--clr-primary-border);
  border-radius: var(--radius-pill, 999px);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Intro (left copy + right product visual) ─────────────────────────────── */

.ppm-intro {
  padding: var(--ppm-section-y) 0;
  border-bottom: 1px solid var(--clr-border-light);
}

.ppm-intro-split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.ppm-intro-copy {
  display: flex;
  flex-direction: column;
  max-width: 38rem;
}

.ppm-intro-title {
  margin: 0.5rem 0 0;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.ppm-intro-lead {
  margin: 1.25rem 0 0;
  max-width: 48ch;
  font-size: clamp(1rem, 0.35vw + 0.94rem, 1.125rem);
  line-height: 1.75;
  color: var(--clr-text-body);
}

.ppm-intro .product-doc-actions {
  justify-content: flex-start;
  margin-top: 2rem;
}

.ppm-intro .product-doc-actions .btn {
  min-height: 48px;
  min-width: 11.5rem;
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.75rem;
}

.ppm-intro-copy .ppm-intro-stats {
  margin-top: 1.75rem;
  width: 100%;
}

.ppm-intro-visual {
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2vw, 1.35rem);
  min-width: 0;
}

.ppm-intro-media {
  position: relative;
  overflow: hidden;
  padding: 0;
  border: 1px solid var(--clr-border-light);
  border-radius: 0 clamp(2rem, 5vw, 3.5rem) 0 clamp(2rem, 5vw, 3.5rem);
  box-shadow: 0 12px 36px -12px rgba(0, 0, 0, 0.14);
  background: #e8e8e8;
}

.ppm-intro-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.ppm-intro-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1rem;
  padding: clamp(1.15rem, 2.5vw, 1.5rem);
  background: var(--clr-bg-alt, #f9f9f9);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--ppm-radius);
}

.ppm-stat {
  padding: 0.4rem 0;
}

.ppm-stat strong {
  display: block;
  font-family: var(--ppm-font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.55rem);
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.3rem;
}

.ppm-stat span {
  display: block;
  font-size: clamp(0.78rem, 0.2vw + 0.72rem, 0.875rem);
  color: var(--clr-text-light);
  line-height: 1.45;
}

/* ── DDZ1513 spotlight ────────────────────────────────────────────────────── */

.ppm-spotlight {
  padding: var(--ppm-section-y) 0;
}

.ppm-spotlight-card {
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  background: var(--clr-white);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--ppm-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
}

.ppm-spotlight-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.35fr);
  gap: clamp(1.5rem, 3.5vw, 2.75rem);
  align-items: start;
}

.ppm-spotlight-media {
  position: relative;
  min-height: 0;
  padding: 0;
  background: #e8e8e8;
  border: 1px solid var(--clr-border-light);
  border-radius: 0 clamp(1.5rem, 3vw, 2.5rem) 0 clamp(1.5rem, 3vw, 2.5rem);
  overflow: hidden;
}

.ppm-spotlight-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.ppm-spotlight-body {
  min-width: 0;
}

.ppm-spotlight-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  margin-bottom: 1.25rem;
}

.ppm-spotlight-copy {
  max-width: 48rem;
}

.ppm-spotlight-copy h2 {
  margin: 0.4rem 0 0;
  font-size: clamp(1.45rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.ppm-spotlight-copy p {
  margin: 1rem 0 0;
  font-size: clamp(0.98rem, 0.3vw + 0.92rem, 1.06rem);
  line-height: 1.7;
  color: var(--clr-text-body);
  max-width: 52ch;
}

.ppm-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.75rem;
  padding: 0;
  list-style: none;
}

.ppm-spotlight-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--clr-border-light);
}

.ppm-spotlight-point h3 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.05rem, 1.5vw, 1.15rem);
  font-weight: 650;
  letter-spacing: -0.015em;
}

.ppm-spotlight-point p {
  margin: 0;
  font-size: clamp(0.92rem, 0.25vw + 0.86rem, 0.98rem);
  line-height: 1.7;
  color: var(--clr-text-body);
}

/* ── Series range ─────────────────────────────────────────────────────────── */

.ppm-series {
  padding: var(--ppm-section-y) 0;
  background: linear-gradient(180deg, #fafafa 0%, #fff 55%);
}

.ppm-series-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2.5vw, 1.35rem);
}

.ppm-series-item {
  padding: clamp(1.25rem, 2.5vw, 1.65rem);
  background: var(--clr-white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--ppm-radius);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.ppm-series-item:hover {
  transform: translateY(-2px);
  border-color: var(--clr-primary-border);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.06);
}

.ppm-series-num {
  display: block;
  margin-bottom: 0.85rem;
  font-family: var(--ppm-font-display);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--clr-primary);
}

.ppm-series-item h3 {
  margin: 0 0 0.55rem;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.ppm-series-item p {
  margin: 0;
  font-size: clamp(0.88rem, 0.2vw + 0.84rem, 0.95rem);
  line-height: 1.65;
  color: var(--clr-text-body);
}

/* ── Model cards ──────────────────────────────────────────────────────────── */

.ppm-models {
  padding: var(--ppm-section-y) 0;
}

.ppm-model-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2rem);
}

.ppm-model-card {
  display: flex;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 2rem);
  background: var(--clr-white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--ppm-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ppm-model-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.07);
}

.ppm-model-media {
  position: relative;
  margin: 0 0 1.15rem;
  min-height: 0;
  padding: 0;
  background: #e8e8e8;
  border-radius: var(--radius-xl, 8px);
  overflow: hidden;
}

.ppm-model-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.ppm-model-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.ppm-model-card-head h3 {
  margin: 0;
  font-size: clamp(1.35rem, 2.5vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.ppm-model-card > p {
  margin: 0 0 1.15rem;
  font-size: clamp(0.92rem, 0.25vw + 0.86rem, 0.98rem);
  line-height: 1.65;
}

.ppm-model-subhead {
  margin: 0 0 0.55rem;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.ppm-feature-list {
  margin: 0 0 1.15rem;
  padding: 0;
  list-style: none;
}

.ppm-feature-list li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: 0.5rem;
  font-size: clamp(0.88rem, 0.2vw + 0.84rem, 0.94rem);
  line-height: 1.6;
  color: var(--clr-text-body);
}

.ppm-feature-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--clr-primary);
}

.ppm-spec-rows {
  margin-top: auto;
  padding-top: 0.35rem;
  border-top: 1px solid var(--clr-border-light);
}

.ppm-spec-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--clr-border-light);
  font-size: clamp(0.86rem, 0.2vw + 0.82rem, 0.92rem);
}

.ppm-spec-row:last-child {
  border-bottom: none;
}

.ppm-spec-row span {
  color: var(--clr-text-light);
  flex-shrink: 0;
}

.ppm-spec-row strong {
  font-family: var(--ppm-font-display);
  color: var(--clr-black);
  text-align: right;
  font-weight: 650;
}

.ppm-model-card .btn {
  margin-top: 1.35rem;
  width: 100%;
  min-height: 48px;
  border-radius: var(--radius-sm);
}

/* ── Configuration note ───────────────────────────────────────────────────── */

.ppm-config {
  padding: 0 0 var(--ppm-section-y);
}

.ppm-config-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem 2rem;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--clr-bg-alt, #f9f9f9);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--ppm-radius);
}

.ppm-config-copy {
  flex: 1 1 18rem;
  max-width: 42rem;
}

.ppm-config-copy h2 {
  margin: 0.4rem 0 0;
  font-size: clamp(1.3rem, 2.5vw, 1.65rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.ppm-config-copy p {
  margin: 0.85rem 0 0;
  font-size: clamp(0.92rem, 0.25vw + 0.86rem, 0.98rem);
  line-height: 1.7;
  color: var(--clr-text-body);
}

.ppm-config-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.ppm-config-actions .btn {
  min-height: 48px;
  border-radius: var(--radius-sm);
}

/* ── Bottom CTA ───────────────────────────────────────────────────────────── */

.ppm-cta {
  padding: 0 0 clamp(3.5rem, 7vw, 5rem);
}

.ppm-cta-inner {
  text-align: center;
  max-width: 36rem;
  margin: 0 auto;
  padding: clamp(2rem, 4vw, 2.75rem);
  background: var(--clr-black);
  color: var(--clr-white);
  border-radius: var(--ppm-radius);
}

.ppm-cta-inner h2 {
  color: var(--clr-white);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.65rem;
}

.ppm-cta-inner p {
  color: rgba(255, 255, 255, 0.72);
  margin: 0 auto 1.35rem;
  max-width: 40ch;
  font-size: clamp(0.92rem, 0.25vw + 0.86rem, 0.98rem);
  line-height: 1.65;
}

.ppm-cta-inner .product-doc-actions {
  justify-content: center;
  margin-top: 0;
}

.ppm-cta-inner .product-doc-actions .btn {
  min-height: 48px;
  border-radius: var(--radius-sm);
}

.ppm-cta-inner .btn-outline {
  border-color: rgba(255, 255, 255, 0.35);
  color: var(--clr-white);
}

.ppm-cta-inner .btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: var(--clr-white);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

@media (max-width: 1024px) {
  .ppm-series-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 900px) {
  .ppm-model-grid,
  .ppm-spotlight-grid,
  .ppm-spotlight-layout {
    grid-template-columns: 1fr;
  }

  .ppm-spotlight-media {
    max-width: 22rem;
    margin: 0 auto;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .ppm-intro-split {
    grid-template-columns: 1fr;
    gap: clamp(1.75rem, 4vw, 2.25rem);
  }

  .ppm-intro-copy {
    max-width: none;
  }

  .ppm-intro-lead {
    max-width: none;
  }

  .ppm-spotlight-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .ppm-config-card {
    flex-direction: column;
    align-items: stretch;
  }

  .ppm-config-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .ppm-config-actions .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .ppm-series-grid {
    grid-template-columns: 1fr;
  }

  .ppm-intro .product-doc-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .ppm-intro .product-doc-actions .btn {
    width: 100%;
    min-width: 0;
  }

  .ppm-cta-inner .product-doc-actions {
    flex-direction: column;
  }

  .ppm-cta-inner .product-doc-actions .btn {
    width: 100%;
  }

  .ppm-spec-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .ppm-spec-row strong {
    text-align: left;
  }
}

@media (max-width: 400px) {
  .ppm-intro-stats {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ppm-series-item,
  .ppm-model-card {
    transition: none;
  }

  .ppm-series-item:hover,
  .ppm-model-card:hover {
    transform: none;
  }
}