/* ============================================================
   LEVRON AEROGEL GRANULES — Page-Specific Styles
   Extends the base design system from styles.css & ev-battery-safety.css
   ============================================================ */

/* ============================================================
   PRODUCT OVERVIEW SECTION
   ============================================================ */
.gr-overview__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}

.gr-anatomy__card {
  padding: 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.gr-anatomy__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-heat);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gr-anatomy__card:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.gr-anatomy__card:hover::before {
  opacity: 1;
}

.gr-anatomy__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(232, 81, 45, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.gr-anatomy__icon svg {
  width: 22px;
  height: 22px;
  color: var(--accent-heat-light);
}

.gr-anatomy__card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.gr-anatomy__card p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* Why Granules Box */
.gr-why-box {
  background: var(--gradient-heat-subtle);
  border: 1px solid rgba(232, 81, 45, 0.12);
  border-radius: var(--radius-xl);
  padding: 36px;
  position: sticky;
  top: 100px;
}

.gr-why-box h4 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.gr-why-box__items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.gr-why-box__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.gr-why-box__check {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(232, 81, 45, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.gr-why-box__check svg {
  width: 12px;
  height: 12px;
  color: var(--accent-heat-light);
}

/* ============================================================
   APPLICATION CLUSTERS
   ============================================================ */
.gr-apps__visual {
  margin-bottom: 64px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.gr-apps__visual img {
  width: 100%;
  display: block;
}

.gr-cluster {
  margin-bottom: 48px;
  padding: 40px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.gr-cluster:hover {
  border-color: var(--border-medium);
}

.gr-cluster:last-child {
  margin-bottom: 0;
}

.gr-cluster__header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.gr-cluster__label {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--accent-heat-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 4px 12px;
  background: rgba(232, 81, 45, 0.08);
  border-radius: 100px;
  white-space: nowrap;
}

.gr-cluster__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.gr-cluster__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.gr-cluster__card {
  padding: 24px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.gr-cluster__card:hover {
  border-color: rgba(232, 81, 45, 0.12);
  transform: translateY(-2px);
}

.gr-cluster__card h5 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.gr-cluster__card p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.gr-cluster__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.gr-cluster__tags span {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 100px;
}

/* For Cluster D which has only 2 cards */
.gr-cluster:last-child .gr-cluster__cards {
  grid-template-columns: repeat(2, 1fr);
  max-width: 820px;
}

/* ============================================================
   RADAR CHART
   ============================================================ */
.gr-radar {
  margin-top: 64px;
  padding: 48px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  text-align: center;
}

.gr-radar__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 32px;
}

.gr-radar__container {
  max-width: 480px;
  margin: 0 auto;
}

.gr-radar__container canvas {
  width: 100% !important;
  height: auto !important;
}

.gr-radar__legend {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-top: 24px;
}

.gr-radar__legend-item {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.gr-radar__legend-item::before {
  content: '';
  width: 12px;
  height: 12px;
  border-radius: 3px;
}

.gr-radar__legend-item--levron::before {
  background: rgba(232, 81, 45, 0.6);
}

.gr-radar__legend-item--conv::before {
  background: rgba(139, 149, 168, 0.4);
}

/* ============================================================
   MULTI-BENEFIT SECTION
   ============================================================ */
.gr-multi__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 24px;
}

.gr-multi__card {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.gr-multi__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-heat);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gr-multi__card:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.gr-multi__card:hover::before {
  opacity: 1;
}

.gr-multi__card--wide {
  grid-row: span 1;
}

.gr-multi__card-icon {
  font-size: 1.75rem;
  margin-bottom: 16px;
}

.gr-multi__card h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.gr-multi__card-metric {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-heat);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.gr-multi__card-metric span {
  font-size: 0.75rem;
  opacity: 0.7;
}

.gr-multi__card p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* Multi-Benefit Bar Comparison */
.gr-multi__compare {
  margin-top: 48px;
  padding: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
}

.gr-multi__compare h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 32px;
  text-align: center;
}

.gr-multi__bars {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.gr-multi__bar-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 16px;
  align-items: center;
}

.gr-multi__bar-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-align: right;
}

.gr-multi__bar-track {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.gr-multi__bar {
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  color: white;
  transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 80px;
}

.gr-multi__bar--levron {
  background: var(--gradient-heat);
  box-shadow: 0 0 20px rgba(232, 81, 45, 0.2);
}

.gr-multi__bar--conv {
  background: linear-gradient(90deg, #4b5563, #6b7280);
  opacity: 0.6;
}

/* ============================================================
   GLOSSARY
   ============================================================ */
.gr-glossary {
  margin-top: 48px;
  padding: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
}

.gr-glossary__title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 28px;
}

.gr-glossary__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.gr-glossary__item {
  padding: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.gr-glossary__item:hover {
  border-color: var(--border-medium);
}

.gr-glossary__item dt {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-heat-light);
  margin-bottom: 8px;
}

.gr-glossary__item dd {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ============================================================
   STICKY INQUIRY STRIP
   ============================================================ */
.gr-sticky-strip {
  position: fixed;
  bottom: -80px;
  left: 0;
  right: 0;
  z-index: 80;
  background: rgba(10, 12, 16, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-subtle);
  padding: 12px 0;
  transition: bottom 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.gr-sticky-strip.visible {
  bottom: 0;
}

.gr-sticky-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.gr-sticky-strip__product {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.gr-sticky-strip__product strong {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
}

.gr-sticky-strip__product span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-tertiary);
}

.gr-sticky-strip__actions {
  display: flex;
  gap: 8px;
}

/* ============================================================
   WHY LEVRON PILLARS — Override for Granules Page
   ============================================================ */
.ev-why__pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.ev-why__pillar {
  padding: 28px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.ev-why__pillar:hover {
  border-color: rgba(232, 81, 45, 0.15);
  transform: translateY(-2px);
}

.ev-why__pillar-number {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  color: var(--accent-heat-light);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.ev-why__pillar h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.ev-why__pillar p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* ============================================================
   DEFENSE PLATFORM VISUAL — Reuse
   ============================================================ */
.def-platform__visual,
.def-apps__visual {
  margin: 48px 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.def-platform__visual img,
.def-apps__visual img {
  width: 100%;
  display: block;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .gr-overview__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .gr-why-box {
    position: static;
  }

  .gr-cluster__cards {
    grid-template-columns: 1fr;
  }

  .gr-cluster:last-child .gr-cluster__cards {
    grid-template-columns: 1fr;
    max-width: none;
  }

  .gr-multi__grid {
    grid-template-columns: 1fr;
  }

  .gr-multi__bar-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .gr-multi__bar-label {
    text-align: left;
  }

  .gr-glossary__grid {
    grid-template-columns: 1fr;
  }

  .ev-why__pillars {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .gr-sticky-strip__inner {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .gr-cluster {
    padding: 24px;
  }

  .gr-cluster__header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .gr-radar {
    padding: 24px;
  }

  .gr-multi__compare {
    padding: 24px;
  }

  .gr-glossary {
    padding: 24px;
  }
}