/* Tensilux Spatial Surface Showcase Stylesheet */
:root {
  --tensilux-void: #030308;
  --tensilux-surface: rgba(10, 16, 32, 0.76);
  --tensilux-border: rgba(56, 189, 248, 0.22);
  --tensilux-cyan: #38BDF8;
  --tensilux-teal: #27D4C8;
  --tensilux-indigo: #818CF8;
}

body.tensilux-page {
  background-color: var(--tensilux-void);
  color: #FFFFFF;
  margin: 0;
  font-family: var(--prag-font-body, -apple-system, BlinkMacSystemFont, sans-serif);
  overflow-x: hidden;
  min-height: 100vh;
}

.tensilux-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  background: rgba(3, 3, 8, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.85rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tensilux-brand-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.tensilux-brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: #FFFFFF;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.tensilux-logo-mark {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: var(--tensilux-cyan);
  stroke-width: 2.2;
}

.tensilux-nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.tensilux-nav-link {
  color: #94A3B8;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.tensilux-nav-link:hover {
  color: #FFFFFF;
}

.tensilux-hero-stage {
  padding: 5rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.tensilux-kicker {
  font-family: var(--prag-font-mono, monospace);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tensilux-cyan);
  margin-bottom: 0.75rem;
}

.tensilux-hero-title {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  margin: 0 0 1.25rem;
  background: linear-gradient(180deg, #FFFFFF 0%, #CBD5E1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.tensilux-hero-desc {
  max-width: 640px;
  margin: 0 auto 3rem;
  font-size: 1.1rem;
  line-height: 1.65;
  color: #94A3B8;
}

.tensilux-specimen-container {
  display: flex;
  justify-content: center;
  margin-bottom: 4rem;
}

.tensilux-specimen-card {
  width: 100%;
  max-width: 580px;
  min-height: 320px;
  background: var(--tensilux-surface);
  border: 1px solid var(--tensilux-border);
  border-radius: 28px;
  padding: 2.5rem;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: grab;
  user-select: none;
  position: relative;
  overflow: visible;
}

.tensilux-specimen-card:active {
  cursor: grabbing;
}

.specimen-glyph-wrap {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: rgba(56, 189, 248, 0.10);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.specimen-glyph {
  width: 32px;
  height: 32px;
  stroke: var(--tensilux-cyan);
  stroke-width: 2;
  fill: none;
}

.specimen-heading {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  color: #FFFFFF;
}

.specimen-equation {
  font-family: var(--prag-font-mono, monospace);
  font-size: 0.85rem;
  color: var(--tensilux-cyan);
  margin-bottom: 1rem;
}

.specimen-note {
  font-size: 0.88rem;
  color: #64748B;
}

/* Triad Section */
.tensilux-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-kicker {
  font-family: var(--prag-font-mono, monospace);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--tensilux-teal);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  color: #FFFFFF;
}

.section-subtitle {
  font-size: 1rem;
  color: #94A3B8;
  max-width: 580px;
  margin: 0 auto;
}

.triad-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.triad-card {
  border-radius: 24px;
  padding: 2rem;
  background: rgba(10, 16, 32, 0.55);
  border: 1px solid rgba(255, 255, 255, 0.08);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-sizing: border-box;
}

.triad-badge {
  font-family: var(--prag-font-mono, monospace);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  display: inline-block;
  align-self: flex-start;
  margin-bottom: 1.25rem;
}

.badge-jelly {
  background: rgba(56, 189, 248, 0.12);
  color: var(--tensilux-cyan);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.badge-glass {
  background: rgba(39, 212, 200, 0.12);
  color: var(--tensilux-teal);
  border: 1px solid rgba(39, 212, 200, 0.3);
}

.badge-stabilized {
  background: rgba(129, 140, 248, 0.12);
  color: var(--tensilux-indigo);
  border: 1px solid rgba(129, 140, 248, 0.3);
}

.triad-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: #FFFFFF;
}

.triad-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: #94A3B8;
  margin: 0 0 1.5rem;
}

.triad-specs {
  font-family: var(--prag-font-mono, monospace);
  font-size: 0.78rem;
  color: #64748B;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1rem;
}

/* Physics Cockpit Section */
.cockpit-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.cockpit-controls {
  background: rgba(10, 16, 32, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 2rem;
}

.control-group {
  margin-bottom: 1.5rem;
}

.control-label-wrap {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #CBD5E1;
}

.control-val {
  font-family: var(--prag-font-mono, monospace);
  color: var(--tensilux-cyan);
}

.control-slider {
  width: 100%;
  appearance: none;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
}

.control-slider::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--tensilux-cyan);
  cursor: pointer;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

.density-tabs {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.density-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #94A3B8;
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.8rem;
  cursor: pointer;
  font-family: var(--prag-font-mono, monospace);
  transition: all 0.2s ease;
}

.density-btn.is-active {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--tensilux-cyan);
  color: #FFFFFF;
}

.telemetry-card {
  background: rgba(10, 16, 32, 0.65);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 24px;
  padding: 2rem;
  font-family: var(--prag-font-mono, monospace);
}

.telemetry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.telemetry-title {
  font-size: 0.95rem;
  color: #FFFFFF;
  font-weight: 700;
}

.telemetry-pip {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 8px #10B981;
  margin-right: 0.4rem;
}

.telemetry-row {
  display: flex;
  justify-content: space-between;
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 0.85rem;
}

.telemetry-key {
  color: #64748B;
}

.telemetry-val {
  color: #E2E4E9;
  font-weight: 600;
}

/* Conversational Explainer Drawer / HUD */
.explainer-banner {
  background: rgba(10, 16, 32, 0.75);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 24px;
  padding: 2.5rem;
  margin-top: 4rem;
  text-align: center;
}

.explainer-chip {
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid var(--tensilux-cyan);
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
}

.explainer-chip:hover {
  background: rgba(56, 189, 248, 0.22);
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.35);
}

.explainer-answer {
  max-width: 720px;
  margin: 1.75rem auto 0;
  font-size: 1.02rem;
  line-height: 1.7;
  color: #CBD5E1;
  text-align: left;
  background: rgba(3, 3, 8, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 1.5rem 2rem;
  display: none;
}

.explainer-answer.is-visible {
  display: block;
}

/* Accessibility & Focus */
:focus-visible {
  outline: 2px solid var(--tensilux-cyan);
  outline-offset: 2px;
}

@media (pointer: coarse) {
  .density-btn,
  .explainer-chip {
    min-height: 44px;
  }
}

/* UI Component Arsenal Grid */
.arsenal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.arsenal-card {
  background: var(--tensilux-surface);
  border: 1px solid var(--tensilux-border);
  border-radius: 24px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 1px 0 0 rgba(255, 255, 255, 0.16),
              0 16px 40px -10px rgba(0, 0, 0, 0.65);
}

.arsenal-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.arsenal-card-title {
  font-family: var(--prag-font-mono, monospace);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--tensilux-cyan);
  margin: 0;
}

.arsenal-card-label {
  font-size: 0.72rem;
  color: #64748B;
  font-family: var(--prag-font-mono, monospace);
}

.arsenal-specimen-box {
  background: rgba(3, 3, 8, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 80px;
}

.arsenal-desc {
  font-size: 0.84rem;
  color: #94A3B8;
  line-height: 1.5;
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media (max-width: 820px) {
  .cockpit-layout {
    grid-template-columns: 1fr;
  }
  .tensilux-header {
    padding: 0.85rem 1.25rem;
  }
}