/* ============================================
   Cellenium — Page Styles
   ============================================ */

/* ===== HERO (home) ===== */
.hero { padding: 180px 0 120px; position: relative; }

.hero-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink-faint);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.hero-meta::before { content: ''; width: 24px; height: 1px; background: var(--accent); }

.hero h1 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(48px, 8vw, 104px);
  line-height: 0.95;
  letter-spacing: -0.03em;
  margin-bottom: 32px;
  max-width: 14ch;
}
.hero h1 em { font-style: italic; color: var(--accent); font-weight: 400; }

.hero-sub {
  font-size: 16px;
  color: var(--ink-dim);
  max-width: 54ch;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }

/* ===== HERO VISUAL: solar fleet inspection ===== */
.hero-visual {
  margin-top: 96px;
  background: var(--bg-elev);
  border: 1px solid var(--line-bright);
  max-width: 980px;
  overflow: hidden;
}

.visual-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
  color: var(--ink-faint);
  flex-wrap: wrap;
  gap: 12px;
}

.visual-bar-left { display: flex; align-items: center; gap: 14px; }

.live-dot {
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 12px var(--accent);
  animation: pulse 1.8s ease-in-out infinite;
}

.visual-body { display: grid; grid-template-columns: 2fr 1fr; }

.panel-grid {
  padding: 24px;
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  grid-template-rows: repeat(8, 1fr);
  gap: 3px;
  aspect-ratio: 16/8;
  background: #0a0c08;
}

.panel {
  background: linear-gradient(135deg, #1a3a1a 0%, #0f2a0f 100%);
  position: relative;
  transition: background 0.3s;
}
.panel.warm { background: linear-gradient(135deg, #4a3a1a 0%, #3a2a0f 100%); }
.panel.fault {
  background: linear-gradient(135deg, var(--accent-warm) 0%, #8a3a1a 100%);
  box-shadow: 0 0 12px rgba(255, 138, 61, 0.4);
}
.panel.fault::after {
  content: '';
  position: absolute;
  inset: -4px;
  border: 1px solid var(--accent-warm);
  animation: faultPulse 2s ease-in-out infinite;
}

.detection-log {
  border-left: 1px solid var(--line);
  padding: 24px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-dim);
}

.log-title {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--ink-faint);
  text-transform: uppercase;
  margin-bottom: 18px;
}

.log-entry {
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.log-entry:last-child { border-bottom: none; }

.log-tag {
  font-size: 10px;
  padding: 2px 6px;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  margin-top: 2px;
}
.log-tag.crit { background: var(--accent-warm); color: var(--bg); }
.log-tag.warn { background: #4a3a1a; color: #e8c468; }
.log-tag.ok { background: var(--line-bright); color: var(--accent); }

.log-detail { flex: 1; }
.log-detail strong { color: var(--ink); font-weight: 500; }
.log-detail span { display: block; color: var(--ink-faint); font-size: 11px; margin-top: 2px; }

@media (max-width: 800px) {
  .visual-body { grid-template-columns: 1fr; }
  .detection-log { border-left: none; border-top: 1px solid var(--line); }
}

/* ===== LOGO STRIP ===== */
.logos {
  padding: 80px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.logos-label {
  text-align: center;
  color: var(--ink-faint);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 40px;
}
.logos-grid { display: grid; grid-template-columns: repeat(5, 1fr); align-items: center; }
.logos-grid > div {
  text-align: center;
  color: var(--ink-faint);
  font-family: var(--serif);
  font-size: 22px;
  font-style: italic;
  padding: 20px;
  border-right: 1px solid var(--line);
  transition: color 0.3s;
}
.logos-grid > div:last-child { border-right: none; }
.logos-grid > div:hover { color: var(--ink); }

@media (max-width: 768px) {
  .logos-grid { grid-template-columns: repeat(2, 1fr); }
  .logos-grid > div:nth-child(2n) { border-right: none; }
  .logos-grid > div { border-bottom: 1px solid var(--line); }
}

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.feature {
  padding: 40px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}
.feature:hover { background: var(--bg-elev); }

.feature-num {
  font-size: 11px;
  color: var(--ink-faint);
  letter-spacing: 0.15em;
  margin-bottom: 28px;
}

.feature-icon {
  width: 36px;
  height: 36px;
  margin-bottom: 24px;
  color: var(--accent);
}

.feature h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 22px;
  line-height: 1.2;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}
.feature p { color: var(--ink-dim); font-size: 14px; line-height: 1.65; }

@media (max-width: 900px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .features-grid { grid-template-columns: 1fr; } }

/* ===== HOW IT WORKS ===== */
.how-grid { display: grid; grid-template-columns: repeat(4, 1fr); }

.how-step {
  padding: 32px 28px;
  border-left: 1px solid var(--line);
  position: relative;
}
.how-step:first-child { border-left-color: var(--accent); }
.how-step::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 32px;
  width: 9px;
  height: 9px;
  background: var(--bg);
  border: 1px solid var(--accent);
  transform: rotate(45deg);
}
.how-step:first-child::before { background: var(--accent); }

.how-num {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 18px;
}

.how-step h4 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.2;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}
.how-step p { color: var(--ink-dim); font-size: 13px; line-height: 1.65; }

@media (max-width: 900px) { .how-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .how-grid { grid-template-columns: 1fr; } }

/* ===== STATS ===== */
.stats { padding: 100px 0; border-top: 1px solid var(--line); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 48px; }

.stat-num {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(48px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}
.stat-num em { font-style: italic; color: var(--accent); }

.stat-label {
  color: var(--ink-dim);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
}

/* ===== QUOTE ===== */
.quote-section { padding: 140px 0; border-top: 1px solid var(--line); }
.quote { max-width: 880px; margin: 0 auto; text-align: center; }

.quote-mark {
  font-family: var(--serif);
  font-style: italic;
  font-size: 80px;
  color: var(--accent);
  line-height: 0.5;
  margin-bottom: 24px;
}

.quote p {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 40px;
}

.quote-author {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--ink-dim);
  font-size: 13px;
}
.quote-author::before { content: ''; width: 32px; height: 1px; background: var(--ink-faint); }

/* ===== CTA ===== */
.cta-section {
  padding: 160px 0;
  border-top: 1px solid var(--line);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 800px; height: 800px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--accent) 0%, transparent 60%);
  opacity: 0.08;
  pointer-events: none;
}

.cta-section h2 {
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.cta-section h2 em { font-style: italic; color: var(--accent); }

.cta-section p {
  color: var(--ink-dim);
  font-size: 16px;
  margin-bottom: 48px;
  position: relative;
  z-index: 1;
}
.cta-section .btn-primary { position: relative; z-index: 1; padding: 18px 28px; font-size: 15px; }

/* ============================================
   PLATFORM PAGE
   ============================================ */

.platform-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}

.platform-detail-row {
  display: contents;
}

.platform-detail-text {
  padding: 80px 60px 80px 0;
  border-bottom: 1px solid var(--line);
}
.platform-detail-text:nth-child(4n+3) { padding: 80px 0 80px 60px; border-left: 1px solid var(--line); }

.platform-detail-visual {
  border-bottom: 1px solid var(--line);
  border-left: 1px solid var(--line);
  background: var(--bg-elev);
  padding: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}
.platform-detail-visual:nth-child(4n+4) {
  border-left: none;
  border-right: 1px solid var(--line);
}

.platform-detail h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(28px, 3.5vw, 40px);
  line-height: 1.1;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.platform-detail p {
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.platform-detail ul {
  list-style: none;
  margin-top: 24px;
}
.platform-detail li {
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
  color: var(--ink-dim);
  font-size: 13px;
}
.platform-detail li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.platform-eyebrow {
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 20px;
  display: inline-block;
}

@media (max-width: 900px) {
  .platform-detail { grid-template-columns: 1fr; }
  .platform-detail-text,
  .platform-detail-text:nth-child(4n+3) {
    padding: 60px 0;
    border-left: none;
  }
  .platform-detail-visual,
  .platform-detail-visual:nth-child(4n+4) {
    border-left: none;
    border-right: none;
    padding: 40px;
    min-height: 280px;
  }
}

/* Visual mockups for platform page */
.mockup-thermal {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 4/3;
  background: #0a0c08;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-template-rows: repeat(9, 1fr);
  gap: 2px;
  padding: 12px;
  border: 1px solid var(--line-bright);
}
.mockup-thermal .panel {
  background: linear-gradient(135deg, #1a3a1a 0%, #0f2a0f 100%);
}
.mockup-thermal .panel.fault {
  background: linear-gradient(135deg, var(--accent-warm) 0%, #8a3a1a 100%);
}
.mockup-thermal .panel.warm {
  background: linear-gradient(135deg, #4a3a1a 0%, #3a2a0f 100%);
}

.mockup-ticket {
  width: 100%;
  max-width: 380px;
  background: var(--bg);
  border: 1px solid var(--line-bright);
  font-family: var(--mono);
  font-size: 12px;
}
.mockup-ticket-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  color: var(--ink-faint);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.mockup-ticket-head .crit { color: var(--accent-warm); }
.mockup-ticket-body { padding: 20px 18px; line-height: 1.8; color: var(--ink-dim); }
.mockup-ticket-body strong { color: var(--ink); display: block; font-size: 14px; margin-bottom: 12px; font-family: var(--serif); font-weight: 400; }
.mockup-ticket-body .row { display: flex; justify-content: space-between; padding: 4px 0; }
.mockup-ticket-body .row span:first-child { color: var(--ink-faint); }
.mockup-ticket-foot {
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  color: var(--accent);
  font-size: 11px;
}

.mockup-chart {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 4/3;
  background: var(--bg);
  border: 1px solid var(--line-bright);
  padding: 24px;
  position: relative;
}
.mockup-chart svg { width: 100%; height: 100%; }

.mockup-fleet {
  width: 100%;
  max-width: 380px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.mockup-fleet-cell {
  aspect-ratio: 1;
  background: var(--bg);
  border: 1px solid var(--line-bright);
  padding: 12px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--ink-faint);
}
.mockup-fleet-cell .num {
  font-family: var(--serif);
  font-size: 18px;
  color: var(--ink);
  font-weight: 400;
}
.mockup-fleet-cell.alert { border-color: var(--accent-warm); }
.mockup-fleet-cell.alert .num { color: var(--accent-warm); }
.mockup-fleet-cell.good .num { color: var(--accent); }

/* ============================================
   PRICING PAGE
   ============================================ */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.pricing-tier {
  padding: 48px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-tier.featured {
  background: var(--bg-elev);
}
.pricing-tier.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: 0; left: 0;
  background: var(--accent);
  color: var(--bg);
  font-size: 10px;
  letter-spacing: 0.15em;
  padding: 6px 12px;
  font-weight: 500;
}

.tier-name {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.tier-price {
  font-family: var(--serif);
  font-weight: 300;
  font-size: 56px;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.tier-price .currency {
  font-size: 24px;
  vertical-align: top;
  color: var(--ink-dim);
  margin-right: 4px;
}
.tier-price .period {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink-faint);
}

.tier-tagline {
  color: var(--ink-dim);
  font-size: 13px;
  margin-bottom: 32px;
  line-height: 1.6;
  min-height: 3em;
}

.tier-cta { margin-bottom: 32px; }
.tier-cta a {
  display: block;
  text-align: center;
  padding: 12px;
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--line-bright);
  color: var(--ink);
  transition: all 0.2s;
}
.tier-cta a:hover { border-color: var(--accent); color: var(--accent); }

.pricing-tier.featured .tier-cta a {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.pricing-tier.featured .tier-cta a:hover {
  background: transparent;
  color: var(--accent);
}

.tier-features {
  list-style: none;
  flex: 1;
}
.tier-features li {
  padding: 10px 0;
  font-size: 13px;
  color: var(--ink-dim);
  border-top: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.tier-features li::before {
  content: '✓';
  color: var(--accent);
  flex-shrink: 0;
}
.tier-features li.disabled { color: var(--ink-faint); }
.tier-features li.disabled::before { content: '—'; color: var(--ink-faint); }

@media (max-width: 900px) { .pricing-grid { grid-template-columns: 1fr; } }

/* FAQ */
.faq-list { max-width: 880px; margin: 0 auto; }

.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 24px 0;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
  list-style: none;
  letter-spacing: -0.01em;
}
.faq-question::-webkit-details-marker { display: none; }

.faq-question::after {
  content: '+';
  font-family: var(--mono);
  font-size: 24px;
  color: var(--accent);
  transition: transform 0.2s;
}
.faq-item[open] .faq-question::after { content: '−'; }

.faq-answer {
  margin-top: 16px;
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.7;
  max-width: 60ch;
}


/* ============================================
   USE CASES (home / platform)
   ============================================ */

.usecase-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.usecase {
  padding: 48px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.usecase-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 24px;
}

.usecase h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.usecase p { color: var(--ink-dim); font-size: 14px; line-height: 1.65; }

@media (max-width: 900px) { .usecase-list { grid-template-columns: 1fr; } }