/*
========================================================================
   Nu Lambda Scientific: BLE Sensor Series page
   Builds on ../styles.css (board tokens, header, buttons, prints, footer)
========================================================================
*/

/* 1. Hero board: collage print, app screenshot print, feature card */
.sensor-pins .pin-collage {
  grid-column: 1 / 9;
  grid-row: 1 / 3;
}

.sensor-pins .pin-collage img {
  aspect-ratio: 7 / 5;
  object-fit: contain;
  background: var(--paper);
}

.sensor-pins .pin-app {
  grid-column: 9 / 13;
  grid-row: 1;
  animation-delay: 0.08s;
}

.sensor-pins .pin-app img {
  aspect-ratio: 9 / 14;
  object-position: top;
}

.sensor-pins .pin {
  text-decoration: none;
}

.feature-card {
  grid-column: 1 / 13;
  grid-row: 3;
}

.feature-card-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  margin-bottom: 8px;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 24px;
  font-size: var(--fs-sm);
}

.feature-list li {
  display: flex;
  flex-direction: column;
}

.feature-list span {
  color: var(--ink-2);
}

/* 2. Catalog */
.sensor-catalog-section {
  background: var(--board);
  border-top: 1px solid var(--line);
}

.section-note {
  margin-top: 8px;
  font-size: var(--fs-sm);
  color: var(--ink-3);
}

.sensor-plate {
  background: var(--paper);
}

.sensor-plate img {
  object-fit: contain;
  padding: 8px;
}

.sensor-subname {
  font-size: var(--fs-sm);
  color: var(--ink-3);
  margin-top: -4px;
}

.section-intro {
  margin-top: 14px;
  color: var(--ink-2);
  max-width: 70ch;
}

.sensor-card .sensor-price {
  font-size: var(--fs-md);
}

.sensor-price {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sensor-card.is-hidden,
.sensor-detail.is-hidden {
  display: none;
}

/* 3. NL Sensor app */
.sensor-app-section {
  background: var(--wall);
}

.app-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(32px, 5vw, 72px);
}

.app-showcase {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 28px;
  align-items: start;
}

.phone-frame {
  margin: 0;
  padding: 8px;
  background: var(--paper);
  box-shadow: var(--print-shadow);
}

.phone-frame img {
  width: 100%;
}

.app-showcase-text {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.app-showcase-title {
  font-size: var(--fs-lg);
  line-height: 1.4;
  font-weight: 700;
}

.app-showcase-desc {
  color: var(--ink-2);
}

.app-feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: var(--fs-sm);
  color: var(--ink-2);
}

.app-feature-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 8px;
}

.app-feature-list i {
  color: var(--ink);
  margin-top: 5px;
}

/* 4. Sensor details: one board panel per sensor */
.sensor-details-section {
  background: var(--board);
  border-top: 1px solid var(--line);
}

.sensor-detail-list {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 4vw, 48px);
}

.sensor-detail {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
  gap: clamp(24px, 4vw, 56px);
  padding: clamp(24px, 3.5vw, 40px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--action);
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.sensor-detail:target {
  box-shadow: 0 0 0 3px var(--sky);
}

.sensor-detail-aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sensor-detail-img {
  border: 1px solid var(--line);
}

.sensor-detail-img img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  padding: 12px;
}

.price-box {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 12px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.price-label {
  color: var(--ink-2);
}

.price-box .sensor-price {
  font-size: var(--fs-lg);
}

.kit-box h4 {
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: 8px;
}

.kit-list {
  font-size: var(--fs-sm);
  border-top: 1px solid var(--line);
}

.kit-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
}

.kit-qty {
  font-weight: 600;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.sensor-detail-main {
  display: flex;
  flex-direction: column;
  gap: 28px;
  min-width: 0;
}

.sensor-detail-head .modal-category {
  display: block;
}

.sensor-detail-title {
  font-size: var(--fs-xl);
  line-height: 1.35;
  font-weight: 700;
}

.sensor-block-title {
  font-size: var(--fs-md);
  font-weight: 700;
  margin-bottom: 10px;
}

.sensor-physics {
  color: var(--ink-2);
  line-height: 1.8;
  max-width: 70ch;
}

/* Formulas set in ink, like the board's printed spec cards */
.formula-box {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 14px;
}

.formula {
  padding: 6px 14px;
  background: var(--board);
  border: 1px solid var(--line);
  font-size: var(--fs-md);
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.formula sub,
.formula sup {
  font-size: 0.7em;
}

.specs-table-container {
  overflow-x: auto;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.specs-table th,
.specs-table td {
  text-align: left;
  vertical-align: top;
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--line);
}

.specs-table tr:first-child th,
.specs-table tr:first-child td {
  border-top: 1px solid var(--line);
}

.sensor-specs th {
  width: 38%;
  font-weight: 600;
}

.specs-table td {
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.exp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 20px;
}

.exp-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 12px;
  border-top: 2px solid var(--sky);
}

.exp-title {
  font-size: var(--fs-base);
  font-weight: 700;
  line-height: 1.5;
}

.exp-desc {
  font-size: var(--fs-sm);
  color: var(--ink-2);
  line-height: 1.65;
}

/* 5. Closing call to action */
.sensor-cta-section {
  background: var(--wall);
}

.sensor-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: clamp(28px, 4vw, 48px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 4px solid var(--action);
}

.sensor-cta-title {
  font-size: var(--fs-xl);
  line-height: 1.35;
  font-weight: 700;
}

.sensor-cta-desc {
  margin-top: 8px;
  color: var(--ink-2);
  max-width: 60ch;
}

.sensor-cta .btn {
  flex-shrink: 0;
}

/* 6. Responsive */
@media (max-width: 960px) {
  .app-showcase-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .sensor-detail {
    grid-template-columns: minmax(0, 1fr);
  }

  .sensor-detail-aside {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .sensor-detail-img {
    grid-row: span 2;
  }

  .sensor-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .sensor-pins .pin-collage,
  .sensor-pins .pin-app {
    flex-basis: 78%;
  }

  .sensor-pins .pin-app {
    flex-basis: 52%;
  }

  .feature-card {
    flex-basis: 82%;
  }

  .feature-list {
    grid-template-columns: minmax(0, 1fr);
  }

  .app-showcase {
    grid-template-columns: minmax(0, 1fr);
  }

  .phone-frame {
    max-width: 240px;
  }

  .sensor-detail-aside {
    grid-template-columns: minmax(0, 1fr);
  }

  .sensor-cta .btn {
    width: 100%;
  }
}

/* Two fixed headline lines, so ห้องปฏิบัติการ is never split.
   The size follows the copy column (the long line is about 11.6em wide), so it always fits */
.board-copy {
  container-type: inline-size;
}

.hero-title {
  font-size: min(2.75rem, 8.4cqi);
}

.hero-title span {
  white-space: nowrap;
}

/* Sensor card meta: English name · category, both quiet */
.sensor-card .product-model {
  font-weight: 500;
  letter-spacing: 0;
  color: var(--ink-3);
}

/* YouTube playlist banner: a deep logo-blue band above the sensor panels */
.playlist-banner {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-bottom: clamp(32px, 4vw, 48px);
  padding: clamp(24px, 4vw, 44px);
  background: var(--sky-ink);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--print-shadow);
}

.playlist-banner-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.playlist-banner-kicker {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--sky);
}

.playlist-banner-title {
  font-size: var(--fs-xl);
  line-height: 1.35;
  font-weight: 700;
}

.playlist-banner-desc {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 8px;
}

.btn-light {
  background: #fff;
  color: var(--sky-ink);
  border-color: #fff;
}

.playlist-banner:hover .btn-light {
  background: var(--wall);
}

.playlist-banner:focus-visible {
  outline: 3px solid var(--sky);
  outline-offset: 3px;
}

.playlist-banner-thumbs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.playlist-banner-thumbs img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 3px solid #fff;
}

/* Demonstration videos inside each sensor panel */
.video-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 220px), 1fr));
  gap: 16px;
}

.video-link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--ink);
  text-decoration: none;
}

.video-thumb {
  position: relative;
  display: block;
  border: 1px solid var(--line);
}

.video-thumb img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.video-thumb i {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  padding-left: 3px;
  border-radius: 50%;
  background: var(--action);
  color: #fff;
  font-size: 1rem;
}

.video-name {
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.5;
}

.video-link:hover .video-name {
  color: var(--action);
  text-decoration: underline;
}

.video-link:hover .video-thumb i {
  background: var(--action-dark);
}

@media (max-width: 960px) {
  .playlist-banner {
    grid-template-columns: minmax(0, 1fr);
  }
}