/* ==========================================================================
   ITGYAN PLAYROOM — SPACE ZONE DESIGN SYSTEM
   Cosmic / Deep Space UI, Glassmorphism, Responsive Grid, Metrics & Result Cards
   ========================================================================== */

:root {
  --space-bg: #07070f;
  --space-bg-surface: #0e0e1a;
  --space-bg-card: rgba(18, 18, 34, 0.75);
  --space-bg-card-hover: rgba(28, 28, 52, 0.85);
  --space-border: rgba(167, 139, 250, 0.18);
  --space-border-glow: rgba(167, 139, 250, 0.45);
  --space-border-strong: rgba(167, 139, 250, 0.35);
  
  --space-text: #f8fafc;
  --space-text-dim: #cbd5e1;
  --space-text-muted: #94a3b8;
  --space-text-faint: #64748b;
  
  --space-cyan: #38bdf8;
  --space-cyan-glow: rgba(56, 189, 248, 0.35);
  --space-purple: #a855f7;
  --space-purple-glow: rgba(168, 85, 247, 0.35);
  --space-violet: #8b5cf6;
  --space-amber: #f59e0b;
  --space-emerald: #10b981;
  --space-rose: #f43f5e;
  
  --space-gradient-cosmic: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --space-gradient-nebula: radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.18) 0%, rgba(56, 189, 248, 0.08) 50%, transparent 80%);
  --space-gradient-card: linear-gradient(180deg, rgba(30, 27, 58, 0.6) 0%, rgba(14, 13, 28, 0.8) 100%);
  
  --space-font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --space-font-display: 'Space Grotesk', 'DM Sans', sans-serif;
  --space-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  
  --space-shadow-glow: 0 0 30px rgba(139, 92, 246, 0.22);
  --space-shadow-cyan: 0 0 25px rgba(56, 189, 248, 0.25);
  --space-shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --space-radius-sm: 8px;
  --space-radius-md: 14px;
  --space-radius-lg: 20px;
  --space-radius-full: 9999px;
}

[data-theme="light"] {
  --space-bg: #f5f7fc;
  --space-bg-surface: #ffffff;
  --space-bg-card: rgba(255, 255, 255, 0.88);
  --space-bg-card-hover: rgba(245, 247, 255, 0.95);
  --space-border: rgba(139, 92, 246, 0.2);
  --space-border-glow: rgba(139, 92, 246, 0.4);
  --space-border-strong: rgba(139, 92, 246, 0.35);
  --space-text: #0f172a;
  --space-text-dim: #334155;
  --space-text-muted: #64748b;
  --space-text-faint: #94a3b8;
  --space-gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(243, 244, 250, 0.9) 100%);
  --space-shadow-card: 0 10px 25px -5px rgba(139, 92, 246, 0.1);
}

/* Background Canvas */
#space-starfield {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

/* Root Layout for Space Pages */
.space-body {
  margin: 0;
  background-color: var(--space-bg);
  color: var(--space-text);
  font-family: var(--space-font-sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  background-image: var(--space-gradient-nebula);
  background-attachment: fixed;
}

.space-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
  box-sizing: border-box;
  position: relative;
  z-index: 2;
}

/* Space Navigation Header */
.space-header {
  border-bottom: 1px solid var(--space-border);
  background: rgba(7, 7, 15, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: sticky;
  top: 0;
  z-index: 30;
  transition: background-color 0.2s, border-color 0.2s;
}

[data-theme="light"] .space-header {
  background: rgba(255, 255, 255, 0.88);
}

.space-header-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.space-brand-group {
  display: flex;
  align-items: center;
  gap: 20px;
}

.space-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--space-font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.8px;
  color: var(--space-text);
  text-decoration: none;
}

.space-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(168, 85, 247, 0.18);
  border: 1px solid rgba(168, 85, 247, 0.35);
  color: #c084fc;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--space-radius-full);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.space-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.space-nav-link {
  color: var(--space-text-muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: color 0.18s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.space-nav-link:hover,
.space-nav-link.active {
  color: var(--space-text);
}

.space-nav-link.active {
  color: var(--space-cyan);
  font-weight: 600;
}

.space-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Breadcrumb */
.space-breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 0 8px;
  font-size: 12px;
  color: var(--space-text-faint);
}

.space-breadcrumb a {
  color: var(--space-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.space-breadcrumb a:hover {
  color: var(--space-cyan);
}

.space-breadcrumb .sep {
  color: var(--space-text-faint);
  user-select: none;
}

.space-breadcrumb .current {
  color: var(--space-text-dim);
  font-weight: 500;
}

/* Space Hero Section */
.space-hero {
  position: relative;
  border-radius: var(--space-radius-lg);
  border: 1px solid var(--space-border);
  background: var(--space-gradient-card);
  padding: 56px 48px;
  margin: 24px 0 44px;
  box-shadow: var(--space-shadow-card);
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.space-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.28) 0%, rgba(56, 189, 248, 0.12) 40%, transparent 70%);
  pointer-events: none;
}

.space-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--space-cyan);
  margin-bottom: 16px;
}

.space-hero-eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--space-cyan);
  box-shadow: 0 0 10px var(--space-cyan);
  animation: pulse-glow 2s infinite ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.25); box-shadow: 0 0 14px var(--space-cyan); }
}

.space-hero h1 {
  font-family: var(--space-font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -1.5px;
  margin: 0 0 18px;
  color: var(--space-text);
}

.space-hero h1 span.gradient {
  background: var(--space-gradient-cosmic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.space-hero-sub {
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.65;
  color: var(--space-text-dim);
  max-width: 680px;
  margin: 0 0 28px;
}

.space-hero-cta-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* Category Sections */
.space-section {
  margin-bottom: 56px;
}

.space-section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}

.space-section-title {
  display: flex;
  align-items: center;
  gap: 12px;
}

.space-section-title h2 {
  font-family: var(--space-font-display);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.6px;
  margin: 0;
  color: var(--space-text);
}

.space-section-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 3px 9px;
  border-radius: var(--space-radius-full);
  background: rgba(168, 85, 247, 0.15);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.25);
}

.space-section-desc {
  font-size: 13.5px;
  color: var(--space-text-muted);
  margin-top: 4px;
}

/* Experience Cards Grid */
.space-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 22px;
}

.space-card {
  position: relative;
  background: var(--space-bg-card);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-md);
  padding: 26px 24px 22px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.22s, box-shadow 0.22s, background-color 0.22s;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
}

.space-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--space-gradient-cosmic);
  opacity: 0;
  transition: opacity 0.22s;
}

.space-card:hover {
  transform: translateY(-5px);
  border-color: var(--space-border-glow);
  box-shadow: 0 16px 36px -12px rgba(0, 0, 0, 0.6), var(--space-shadow-glow);
  background: var(--space-bg-card-hover);
}

.space-card:hover::before {
  opacity: 1;
}

.space-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(139, 92, 246, 0.14);
  border: 1px solid rgba(139, 92, 246, 0.25);
  display: grid;
  place-items: center;
  font-size: 26px;
  margin-bottom: 18px;
  transition: transform 0.2s;
}

.space-card:hover .space-card-icon {
  transform: scale(1.08) rotate(3deg);
}

.space-card h3 {
  font-family: var(--space-font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin: 0 0 8px;
  color: var(--space-text);
}

.space-card p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--space-text-muted);
  margin: 0 0 20px;
  flex: 1;
}

.space-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--space-border);
  font-size: 12px;
  font-weight: 600;
  color: var(--space-cyan);
}

.space-card-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: transform 0.18s;
}

.space-card:hover .space-card-arrow {
  transform: translateX(4px);
}

/* Single Experience Page Layout */
.space-tool-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  margin: 20px 0 48px;
}

@media (min-width: 992px) {
  .space-tool-layout.with-sidebar {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

.space-tool-panel {
  background: var(--space-bg-card);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-lg);
  padding: 34px 32px;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: var(--space-shadow-card);
  position: relative;
}

.space-tool-header {
  margin-bottom: 26px;
}

.space-tool-header h1 {
  font-family: var(--space-font-display);
  font-size: clamp(24px, 3.5vw, 34px);
  font-weight: 800;
  letter-spacing: -0.8px;
  margin: 0 0 10px;
  color: var(--space-text);
}

.space-tool-header p {
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--space-text-dim);
  margin: 0;
}

/* Forms & Inputs */
.space-form-group {
  margin-bottom: 22px;
}

.space-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--space-text-dim);
  margin-bottom: 8px;
}

.space-label small {
  font-weight: 400;
  color: var(--space-text-muted);
  margin-left: 4px;
}

.space-input,
.space-select {
  width: 100%;
  box-sizing: border-box;
  background: var(--space-bg-surface);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-sm);
  padding: 12px 14px;
  font-size: 15px;
  color: var(--space-text);
  font-family: var(--space-font-sans);
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.space-input:focus,
.space-select:focus {
  border-color: var(--space-cyan);
  box-shadow: 0 0 0 3px var(--space-cyan-glow);
}

.space-input-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* Sliders */
.space-slider-group {
  margin-bottom: 20px;
}

.space-slider-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.space-slider-value {
  font-family: var(--space-font-mono);
  font-weight: 700;
  color: var(--space-cyan);
  font-size: 14px;
  background: rgba(56, 189, 248, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}

.space-slider {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.space-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--space-cyan);
  box-shadow: 0 0 10px var(--space-cyan);
  cursor: pointer;
  transition: transform 0.1s;
}

.space-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

/* Buttons */
.space-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--space-radius-sm);
  font-family: var(--space-font-sans);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.16s, background-color 0.16s, border-color 0.16s, box-shadow 0.16s;
  box-sizing: border-box;
}

.space-btn:active {
  transform: translateY(1px);
}

.space-btn-primary {
  background: var(--space-gradient-cosmic);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(139, 92, 246, 0.35);
}

.space-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.5);
}

.space-btn-secondary {
  background: rgba(139, 92, 246, 0.12);
  border-color: var(--space-border);
  color: var(--space-text);
}

.space-btn-secondary:hover {
  background: rgba(139, 92, 246, 0.24);
  border-color: var(--space-border-glow);
}

.space-btn-ghost {
  background: transparent;
  color: var(--space-text-muted);
  border-color: transparent;
}

.space-btn-ghost:hover {
  color: var(--space-text);
  background: rgba(255, 255, 255, 0.05);
}

.space-btn-cyan {
  background: var(--space-cyan);
  color: #07070f;
  box-shadow: 0 4px 18px rgba(56, 189, 248, 0.3);
}

.space-btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(56, 189, 248, 0.5);
}

/* Result Cards */
.space-result-card {
  position: relative;
  border: 1px solid var(--space-border-strong);
  border-radius: var(--space-radius-lg);
  background: linear-gradient(135deg, rgba(23, 20, 48, 0.9) 0%, rgba(10, 9, 22, 0.95) 100%);
  padding: 36px 30px;
  box-shadow: var(--space-shadow-card), var(--space-shadow-glow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  overflow: hidden;
  margin-top: 24px;
}

.space-result-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--space-gradient-cosmic);
}

.space-result-header {
  text-align: center;
  margin-bottom: 24px;
}

.space-result-badge {
  display: inline-block;
  font-family: var(--space-font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--space-cyan);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 4px 12px;
  border-radius: var(--space-radius-full);
  margin-bottom: 12px;
}

.space-result-card h2 {
  font-family: var(--space-font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.6px;
  margin: 0;
  color: var(--space-text);
}

/* Metric Display Grids */
.space-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.space-metric-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-md);
  padding: 18px 16px;
  text-align: center;
  transition: transform 0.18s, border-color 0.18s;
}

.space-metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--space-border-glow);
}

.space-metric-label {
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--space-text-muted);
  margin-bottom: 8px;
}

.space-metric-val {
  font-family: var(--space-font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--space-text);
  line-height: 1.2;
}

.space-metric-val.highlight-cyan { color: var(--space-cyan); }
.space-metric-val.highlight-purple { color: #c084fc; }
.space-metric-val.highlight-amber { color: var(--space-amber); }
.space-metric-val.highlight-emerald { color: var(--space-emerald); }

.space-metric-sub {
  font-size: 11px;
  color: var(--space-text-faint);
  margin-top: 6px;
}

/* Odometer / Big Stat Hero Display */
.space-odometer-box {
  text-align: center;
  padding: 24px 16px;
  background: radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
  border-radius: var(--space-radius-md);
  margin: 20px 0;
}

.space-odometer-number {
  font-family: var(--space-font-display);
  font-size: clamp(34px, 6vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1px;
  background: var(--space-gradient-cosmic);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  margin: 8px 0;
}

.space-odometer-unit {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--space-cyan);
}

/* Sharing & Action Toolbar */
.space-share-toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--space-border);
}

/* Share Modal */
.space-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  place-items: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  padding: 20px;
  box-sizing: border-box;
}

.space-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.space-modal {
  background: #0f0e1c;
  border: 1px solid var(--space-border-strong);
  border-radius: var(--space-radius-lg);
  padding: 30px;
  max-width: 480px;
  width: 100%;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), var(--space-shadow-glow);
  transform: scale(0.95);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

[data-theme="light"] .space-modal {
  background: #ffffff;
}

.space-modal-backdrop.active .space-modal {
  transform: scale(1);
}

.space-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.space-modal-header h3 {
  font-family: var(--space-font-display);
  font-size: 20px;
  margin: 0;
  color: var(--space-text);
}

.space-modal-close {
  background: transparent;
  border: 0;
  color: var(--space-text-muted);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}

.space-modal-close:hover {
  color: var(--space-text);
}

.space-share-platforms {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin: 18px 0;
}

.space-platform-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--space-radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--space-border);
  color: var(--space-text);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  transition: background-color 0.15s, border-color 0.15s;
}

.space-platform-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--space-border-glow);
}

.space-copy-box {
  display: flex;
  gap: 8px;
  margin-top: 14px;
}

.space-copy-box input {
  flex: 1;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-sm);
  padding: 10px 12px;
  color: var(--space-text-muted);
  font-size: 12.5px;
  outline: none;
}

/* Toast */
.space-toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translate(-50%, 20px);
  background: #1e1b38;
  border: 1px solid var(--space-cyan);
  border-radius: var(--space-radius-full);
  padding: 11px 24px;
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px rgba(56, 189, 248, 0.3);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.space-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

/* Cosmic Address Stepper */
.space-hierarchy {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 24px 0;
}

.space-hierarchy-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-md);
  padding: 16px 20px;
  transition: transform 0.18s, border-color 0.18s, background-color 0.18s;
}

.space-hierarchy-step:hover {
  transform: translateX(4px);
  border-color: var(--space-border-glow);
  background: rgba(139, 92, 246, 0.08);
}

.space-step-badge {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  display: grid;
  place-items: center;
  font-size: 18px;
  flex-shrink: 0;
}

.space-step-content h4 {
  font-family: var(--space-font-display);
  font-size: 16px;
  font-weight: 700;
  margin: 0 0 4px;
  color: var(--space-text);
}

.space-step-content p {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--space-text-muted);
  margin: 0;
}

/* Quiz Styles */
.space-quiz-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--space-text-muted);
}

.space-quiz-bar {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  margin: 0 16px;
  overflow: hidden;
}

.space-quiz-bar-fill {
  height: 100%;
  background: var(--space-gradient-cosmic);
  transition: width 0.3s ease;
}

.space-quiz-card {
  margin-bottom: 24px;
}

.space-quiz-q {
  font-family: var(--space-font-display);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 22px;
  color: var(--space-text);
}

.space-quiz-options {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.space-quiz-opt {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-md);
  padding: 16px 20px;
  cursor: pointer;
  font-size: 14.5px;
  color: var(--space-text);
  transition: background-color 0.15s, border-color 0.15s, transform 0.15s;
  text-align: left;
  width: 100%;
}

.space-quiz-opt:hover:not(:disabled) {
  background: rgba(139, 92, 246, 0.12);
  border-color: var(--space-border-glow);
  transform: translateX(4px);
}

.space-quiz-opt-marker {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 12px;
  color: var(--space-text-muted);
  flex-shrink: 0;
}

.space-quiz-opt.correct {
  background: rgba(16, 185, 129, 0.18) !important;
  border-color: var(--space-emerald) !important;
  color: #34d399 !important;
}

.space-quiz-opt.wrong {
  background: rgba(244, 63, 94, 0.18) !important;
  border-color: var(--space-rose) !important;
  color: #fb7185 !important;
}

.space-quiz-explanation {
  background: rgba(56, 189, 248, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--space-radius-md);
  padding: 16px 20px;
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--space-text-dim);
}

/* Simulation Canvas Container */
.space-canvas-wrapper {
  position: relative;
  width: 100%;
  border-radius: var(--space-radius-md);
  overflow: hidden;
  background: #05050a;
  border: 1px solid var(--space-border);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.8);
  aspect-ratio: 16 / 10;
  max-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.space-canvas-wrapper canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Related Experiences Footer */
.space-related-section {
  margin: 64px 0 32px;
  border-top: 1px solid var(--space-border);
  padding-top: 40px;
}

.space-related-title {
  font-family: var(--space-font-display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--space-text);
}

.space-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.space-related-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--space-bg-card);
  border: 1px solid var(--space-border);
  border-radius: var(--space-radius-sm);
  padding: 14px 16px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.16s, border-color 0.16s;
}

.space-related-card:hover {
  transform: translateY(-2px);
  border-color: var(--space-cyan);
}

.space-related-icon {
  font-size: 24px;
  flex-shrink: 0;
}

.space-related-info h4 {
  font-size: 14px;
  font-weight: 600;
  margin: 0 0 2px;
  color: var(--space-text);
}

.space-related-info span {
  font-size: 11.5px;
  color: var(--space-text-muted);
}

/* Responsive Rules */
@media (max-width: 768px) {
  .space-header-inner {
    height: 64px;
    padding: 0 16px;
  }
  .space-nav {
    display: none; /* Mobile menu or compact */
  }
  .space-hero {
    padding: 36px 24px;
    margin: 16px 0 32px;
  }
  .space-hero h1 {
    font-size: 32px;
  }
  .space-tool-panel {
    padding: 24px 20px;
  }
  .space-result-card {
    padding: 24px 18px;
  }
  .space-metric-grid {
    grid-template-columns: 1fr 1fr;
  }
  .space-share-platforms {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .space-metric-grid {
    grid-template-columns: 1fr;
  }
  .space-hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }
  .space-btn {
    width: 100%;
  }
}

/* Accessibility: prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  #space-starfield {
    opacity: 0.4;
  }
}