/* ==========================================================================
   Basler Playground - Enterprise Vision Compositor Stylesheet
   Theme: Sleek 3-Card Submodule Repository Grid & Generous Hero Spacing
   ========================================================================== */

:root {
  --brand-blue: #00457C;
  --brand-blue-hover: #003663;
  --brand-blue-glow: rgba(0, 69, 124, 0.25);
  --brand-orange: #f58220;
  
  --bg-page: #f8fafc;
  --bg-panel: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-header: rgba(255, 255, 255, 0.95);
  --bg-alt-section: #eef3f8;

  --border-light: #d9e1ea;
  --border-medium: #cfd9e4;
  --border-dark: #b8c3cf;

  --text-primary: #16202b;
  --text-secondary: #354657;
  --text-muted: #516476;

  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-pink: #be185d;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;

  /* Layout & Geometry */
  --max-width: 1240px;
  --radius-lg: 12px;
  --radius-md: 9px;
  --radius-sm: 6px;
  --shadow-window: none;
  --shadow-card: 0 4px 16px -2px rgba(22, 32, 43, 0.05);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
}

body {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--bg-header);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  display: flex;
  align-items: center;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 32px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 26px;
  width: auto;
  object-fit: contain;
}

.brand-text {
  color: #16202b;
  font-weight: 800;
  font-size: 1.15rem;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.925rem;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--brand-blue);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--brand-blue);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(0, 69, 124, 0.2);
}

.btn-primary:hover {
  background: var(--brand-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 69, 124, 0.3);
}

.btn-secondary {
  background: #ffffff;
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-subtle);
  border-color: var(--brand-blue);
  color: var(--brand-blue);
}

.btn-lg {
  padding: 12px 24px;
  font-size: 0.975rem;
  border-radius: var(--radius-md);
}

.btn-icon {
  width: 18px;
  height: 18px;
}

/* --------------------------------------------------------------------------
   Hero Section & Screenshot Background Showcase Window
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: 130px;
  padding-bottom: 70px;
  text-align: center;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  color: var(--text-primary);
}

/* Hero Provided By Subtitle Badge */
.hero-provided-by {
  margin-top: 0;
  margin-bottom: 36px;
}

.provided-by-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--brand-blue);
  background: rgba(0, 69, 124, 0.08);
  border: 1px solid rgba(0, 69, 124, 0.18);
  padding: 5px 18px;
  border-radius: 20px;
  letter-spacing: -0.01em;
  box-shadow: 0 2px 8px rgba(0, 69, 124, 0.05);
}

.text-brand-blue {
  color: var(--brand-blue);
  position: relative;
  display: inline-block;
}

.text-brand-orange {
  color: var(--brand-orange);
  position: relative;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 48px auto; /* Generous 48px spacing between subtitle context & CTA button */
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 84px; /* Generous 84px distance between CTA button & screenshot window */
}

.hero-mobile-only {
  display: none;
}

/* Pure Transparent Screenshot Container */
.screenshot-showcase-window {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 0;
  box-shadow: none;
  overflow: visible;
  border: none;
  background: transparent;
}

.app-screenshot-bg {
  width: 100%;
  height: auto;
  display: block;
}

/* Live Camera Viewport Canvas Overlay */
.overlay-viewport-container {
  position: absolute;
  left: 25.6906%;
  top: 17.0343%;
  width: 45.0276%;
  height: 68.6%;
  background: #000000;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.overlay-live-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Interactive Parameters Overlay Controls */
.overlay-params-container {
  position: absolute;
  left: 72.4793%;
  top: 82.9657%;
  width: 25.0000%;
  height: 9.0074%;
  background: rgba(255, 255, 255, 0.98);
  border: 2px solid var(--brand-blue);
  box-shadow: 0 0 14px var(--brand-blue-glow);
  border-radius: 6px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.pulse-highlight-box {
  animation: paramGlowPulse 2.2s infinite ease-in-out;
}

@keyframes paramGlowPulse {
  0% {
    border-color: var(--brand-blue);
    box-shadow: 0 0 10px rgba(0, 69, 124, 0.3);
    transform: scale(1);
  }
  50% {
    border-color: #f58220;
    box-shadow: 0 0 22px rgba(245, 130, 32, 0.85), 0 0 10px rgba(0, 69, 124, 0.4);
    transform: scale(1.025);
  }
  100% {
    border-color: var(--brand-blue);
    box-shadow: 0 0 10px rgba(0, 69, 124, 0.3);
    transform: scale(1);
  }
}

.overlay-param-tooltip {
  position: absolute;
  top: -30px;
  right: 12px;
  background: var(--brand-orange);
  color: #ffffff;
  font-size: 0.675rem;
  font-weight: 800;
  font-family: var(--font-mono);
  padding: 3px 10px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(245, 130, 32, 0.45);
  white-space: nowrap;
  animation: bounceTooltip 1.5s infinite alternate ease-in-out;
  pointer-events: none;
  z-index: 10;
}

.overlay-param-tooltip::after {
  content: '';
  position: absolute;
  bottom: -4px;
  right: 24px;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--brand-orange);
}

@keyframes bounceTooltip {
  0% { transform: translateY(0); }
  100% { transform: translateY(-4px); }
}

.overlay-param-box {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.overlay-param-box .param-name {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.725rem;
  color: var(--brand-blue);
}

.overlay-num-input {
  width: 42px;
  padding: 1px 2px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  text-align: center;
  border: 1px solid var(--border-medium);
  border-radius: 3px;
  color: var(--text-primary);
  background: #ffffff;
}

.overlay-slider {
  flex: 1;
  accent-color: var(--brand-blue);
  cursor: pointer;
  height: 4px;
}

.overlay-slider.pulsing-slider {
  accent-color: var(--brand-orange);
}

/* --------------------------------------------------------------------------
   INTERACTIVE PARAMETERS DEMO SECTION (#interactive-highlight)
   -------------------------------------------------------------------------- */
.section-highlight {
  background: linear-gradient(180deg, #ffffff 0%, #f0f6ff 100%);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 80px 0;
}

.section-tag-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  font-family: var(--font-mono);
  background: rgba(0, 69, 124, 0.1);
  color: var(--brand-blue);
  padding: 3px 12px;
  border-radius: 12px;
  border: 1px solid rgba(0, 69, 124, 0.2);
  margin-bottom: 12px;
}

.interactive-demo-container {
  display: grid;
  grid-template-columns: 310px 1fr;
  gap: 28px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.interactive-demo-sidebar h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-blue);
  margin-bottom: 20px;
}

.steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.steps-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-num {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--brand-blue);
  color: #ffffff;
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.steps-list strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.steps-list p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.interactive-demo-preview {
  background: #000000;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-medium);
  display: flex;
  flex-direction: column;
}

.demo-toolbar {
  height: 38px;
  background: #0f172a;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: #e2e8f0;
  font-weight: 600;
  border-bottom: 1px solid #1e293b;
}

.latency-badge {
  font-family: var(--font-mono);
  font-size: 0.725rem;
  color: var(--accent-green);
}

.demo-split-view {
  display: grid;
  grid-template-columns: 480px 1fr;
  flex: 1;
}

.demo-code-pane {
  background: #0f172a;
  padding: 24px 28px;
  color: #abb2bf;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  line-height: 1.65;
  border-right: 1px solid #1e293b;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-sizing: border-box;
  width: 480px;
}

.demo-code-pane code {
  color: #abb2bf;
}

.demo-code-pane .cmt {
  color: #7f848e;
  font-style: italic;
}

.demo-code-pane .kwd {
  color: #c678dd;
  font-weight: 600;
}

.demo-code-pane .type {
  color: #e5c07b;
}

.demo-code-pane .fn {
  color: #61afef;
  font-weight: 600;
}

.demo-code-pane .fn-pink {
  color: #ec4899;
  font-weight: 700;
}

.demo-code-pane .var {
  color: #e06c75;
}

.demo-code-pane .num {
  color: #d19a66;
  font-weight: 700;
}

.demo-code-pane .const {
  color: #d19a66;
  font-weight: 700;
}

.code-interactive-highlight {
  background: rgba(245, 130, 32, 0.18);
  border-left: 3px solid #f58220;
  display: block;
  padding: 4px 10px;
  width: 100%;
  box-sizing: border-box;
  white-space: nowrap;
}

#demoParamValText {
  display: inline-block;
  min-width: 3ch;
  text-align: left;
  font-family: var(--font-mono);
}

.demo-slider-box {
  margin-top: 20px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.825rem;
  margin-bottom: 12px;
}

.val-pill {
  background: var(--brand-blue);
  color: #ffffff;
  padding: 3px 12px;
  border-radius: 12px;
  font-size: 0.775rem;
  font-weight: 700;
  white-space: nowrap;
  display: inline-block;
  text-align: center;
  box-sizing: border-box;
}

.demo-slider {
  width: 100%;
  accent-color: #f58220;
  cursor: pointer;
  margin-bottom: 14px;
}

.slider-presets {
  display: flex;
  gap: 8px;
}

.preset-btn {
  flex: 1;
  padding: 6px 8px;
  font-size: 0.725rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #cbd5e1;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
  text-align: center;
}

.preset-btn:hover, .preset-btn.active {
  background: #f58220;
  color: #000000;
  font-weight: 700;
}

.demo-canvas-pane {
  background: #000000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
}

canvas.demo-canvas {
  width: 100%;
  height: 260px;
  display: block;
}

.canvas-caption {
  font-size: 0.7rem;
  color: #94a3b8;
  font-family: var(--font-mono);
  margin-top: 10px;
}

/* --------------------------------------------------------------------------
   Sections Common & Features
   -------------------------------------------------------------------------- */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt-section);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-title-wrapper {
  text-align: center;
  margin-bottom: 50px;
}

.section-tag {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--brand-blue);
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}

.feature-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.feature-card.highlight-card {
  border-color: var(--brand-blue);
  box-shadow: 0 4px 16px var(--brand-blue-glow);
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand-blue);
  box-shadow: 0 8px 24px -4px rgba(0, 69, 124, 0.1);
}

.feature-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: #f0f5fa;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-blue);
  margin-bottom: 16px;
}

.feature-icon-wrapper.highlight {
  background: rgba(245, 130, 32, 0.15);
  color: #f58220;
  font-size: 1.2rem;
  font-weight: 900;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.55;
}

.feature-card code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: #f1f5f9;
  padding: 2px 5px;
  border-radius: 4px;
  color: var(--brand-blue);
}

/* --------------------------------------------------------------------------
   Sleek 3-Card Submodule Repository Grid (Simplified Layout)
   -------------------------------------------------------------------------- */
.repo-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.repo-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
}

.repo-card:hover {
  transform: translateY(-3px);
  border-color: var(--brand-blue);
  box-shadow: 0 8px 24px -4px rgba(0, 69, 124, 0.12);
}

.repo-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.github-card-icon {
  width: 20px;
  height: 20px;
  fill: var(--brand-blue);
  flex-shrink: 0;
}

.repo-card-title {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1rem;
  color: var(--brand-blue);
}

.repo-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 20px;
}

.repo-card-link {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--brand-blue);
  background: rgba(0, 69, 124, 0.08);
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-block;
  align-self: flex-start;
  transition: var(--transition);
}

.repo-card:hover .repo-card-link {
  background: var(--brand-blue);
  color: #ffffff;
}

/* Footer */
.site-footer {
  padding: 40px 0;
  border-top: 1px solid var(--border-light);
  background: #ffffff;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
}

.footer-links a:hover {
  color: var(--brand-blue);
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.825rem;
}

/* ==========================================================================
   Responsive Layout
   ========================================================================== */

/* --- Tablet (max-width: 1024px) --- */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.5rem; }
  .interactive-demo-container { grid-template-columns: 1fr; }
  .demo-split-view { grid-template-columns: 1fr; }
  .demo-code-pane { width: 100%; }
  .overlay-params-container { font-size: 0.65rem; padding: 0 4px; }
  .nav-links { display: none; }
  .repo-cards-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
}

/* --- Mobile (max-width: 768px) --- */
@media (max-width: 768px) {
  .container { padding: 0 16px; }

  /* Header */
  .site-header { height: 56px; }
  .brand-logo-img { height: 22px; }
  .brand-text { font-size: 1rem; }
  .header-cta .btn-primary { display: none; }
  .header-cta .btn-secondary { padding: 6px 14px; font-size: 0.8rem; }

  /* Hero */
  .hero-section { padding-top: 100px; padding-bottom: 48px; }
  .hero-title { font-size: 1.75rem; line-height: 1.25; margin-bottom: 14px; }
  .hero-provided-by { margin-bottom: 24px; }
  .provided-by-badge { font-size: 0.725rem; padding: 4px 14px; }
  .hero-subtitle { font-size: 0.95rem; margin: 0 auto 32px auto; line-height: 1.55; }
  .hero-actions { margin-bottom: 48px; }
  .hero-actions .btn-lg { padding: 10px 20px; font-size: 0.875rem; }
  .hero-desktop-only { display: none; }
  .hero-mobile-only { display: inline-flex; }

  /* Screenshot overlay — hide interactive param overlay on mobile */
  .overlay-params-container { display: none; }

  /* Sections */
  .section { padding: 56px 0; }
  .section-highlight { padding: 56px 0; }
  .section-title-wrapper { margin-bottom: 32px; }
  .section-title { font-size: 1.5rem; }
  .section-desc { font-size: 0.9rem; }

  /* Features */
  .features-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-card { padding: 20px; }
  .feature-card h3 { font-size: 1.05rem; }
  .feature-card p { font-size: 0.85rem; }

  /* Interactive Demo — HIDE entire live demo on mobile, show description only */
  .interactive-demo-container { padding: 20px; gap: 0; }
  .interactive-demo-preview { display: none; }
  .interactive-demo-sidebar { max-width: 100%; }
  .interactive-demo-sidebar h3 { font-size: 1.1rem; margin-bottom: 16px; }
  .steps-list { gap: 16px; }

  /* Repo cards */
  .repo-cards-grid { grid-template-columns: 1fr; gap: 14px; }
  .repo-card { padding: 18px; }
  .repo-card-title { font-size: 0.9rem; }
  .repo-card-desc { font-size: 0.825rem; margin-bottom: 14px; }

  /* Footer */
  .site-footer { padding: 28px 0; }
  .footer-content { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-links { flex-wrap: wrap; gap: 14px; }
  .footer-copyright { font-size: 0.75rem; }
}

/* --- Small Mobile (max-width: 480px) --- */
@media (max-width: 480px) {
  .hero-title { font-size: 1.45rem; }
  .hero-subtitle { font-size: 0.875rem; }
  .section-title { font-size: 1.3rem; }
  .section-tag-badge { font-size: 0.675rem; }
  .steps-list p { font-size: 0.8rem; }
  .step-num { width: 26px; height: 26px; font-size: 0.75rem; }
}