/* Premium Design Tokens & Reset System */
:root {
  --bg-main: #060919;
  --bg-surface: rgba(15, 22, 53, 0.45);
  --bg-surface-hover: rgba(22, 32, 74, 0.65);
  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(0, 245, 212, 0.3);
  
  --text-primary: #f8f9fa;
  --text-secondary: #9ea5c8;
  --text-muted: #636a8a;
  
  --accent-teal: #00f5d4;
  --accent-purple: #9b5de5;
  --accent-pink: #f15bb5;
  
  --glow-teal: rgba(0, 245, 212, 0.15);
  --glow-purple: rgba(155, 93, 229, 0.2);
  
  /* Project Tier Colors */
  --tier-graduated: #00f5d4;
  --tier-incubating: #9b5de5;
  --tier-member: #00b4d8;
  --tier-external: #f15bb5;
  
  --font-heading: 'Outfit', 'Inter', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box; margin: 0; padding: 0;
}

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  min-height: 100vh; overflow-x: hidden;
  line-height: 1.6;
}

/* Decorative Cosmic Glow Assets */
.app-container {
  position: relative; width: 100%; max-width: 1400px;
  margin: 0 auto; padding: 40px 24px; z-index: 2;
}

.bg-glow {
  position: fixed; width: 500px; height: 500px;
  border-radius: 50%; filter: blur(140px);
  pointer-events: none; z-index: 1; opacity: 0.35;
}
.glow-primary { background: var(--accent-purple); top: -10%; right: -10%; }
.glow-secondary { background: #00b4d8; bottom: -10%; left: -10%; }

/* Top Hero Segment */
.app-header {
  text-align: center; margin-bottom: 48px; padding-top: 10px;
}

.header-actions {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 20px; max-width: 900px; margin-left: auto; margin-right: auto;
}

.back-link {
  color: var(--text-secondary); text-decoration: none;
  font-size: 0.9rem; font-weight: 500; transition: var(--transition-smooth);
}
.back-link:hover { color: var(--text-primary); }

.badge {
  display: inline-block; background: rgba(155, 93, 229, 0.15);
  border: 1px solid rgba(155, 93, 229, 0.3); color: #cc99ff;
  font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 1.5px; padding: 6px 16px; border-radius: 100px;
}

.app-header h1 {
  font-family: var(--font-heading); font-size: 3rem; font-weight: 700;
  letter-spacing: -0.5px; margin-bottom: 14px;
  background: linear-gradient(135deg, #ffffff 30%, var(--text-secondary) 70%, var(--accent-teal) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.1rem; color: var(--text-secondary);
  max-width: 750px; margin: 0 auto; font-weight: 300;
}

/* Control Center Floating Hub */
.control-hub {
  background: rgba(10, 15, 40, 0.7);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color); border-radius: 24px;
  padding: 24px; margin-bottom: 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Premium Search Input Wrapper */
.search-wrapper { position: relative; width: 100%; margin-bottom: 20px; }
.search-icon {
  position: absolute; left: 20px; top: 50%; transform: translateY(-50%);
  width: 20px; height: 20px; color: var(--text-muted); pointer-events: none;
  transition: var(--transition-smooth);
}

#search-input {
  width: 100%; background: rgba(5, 8, 24, 0.6);
  border: 1px solid var(--border-color); border-radius: 16px;
  padding: 18px 20px 18px 56px; color: var(--text-primary);
  font-size: 1.05rem; font-family: var(--font-body); transition: var(--transition-smooth);
}
#search-input:focus {
  outline: none; border-color: rgba(0, 245, 212, 0.5);
  box-shadow: 0 0 20px var(--glow-teal); background: rgba(5, 8, 24, 0.8);
}
#search-input:focus + .search-icon { color: var(--accent-teal); }

.clear-btn {
  position: absolute; right: 20px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: var(--text-muted); font-size: 1.5rem;
  cursor: pointer; transition: var(--transition-smooth); padding: 0 5px;
}
.clear-btn:hover { color: var(--text-primary); }

/* Category Bar Index Navigation */
.category-bar {
  display: flex; flex-wrap: wrap; gap: 8px; justify-content: center;
  padding-top: 10px; border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.cat-btn {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary); font-family: var(--font-body);
  font-weight: 500; font-size: 0.85rem; padding: 8px 16px;
  border-radius: 12px; cursor: pointer; transition: var(--transition-smooth);
}
.cat-btn:hover {
  background: rgba(255, 255, 255, 0.08); color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.15);
}
.cat-btn.active {
  background: linear-gradient(135deg, var(--accent-teal), #00b4d8);
  color: #060919; font-weight: 700; border-color: transparent;
  box-shadow: 0 0 15px var(--glow-teal);
}

/* Meta Status Counters & Legend Bar */
.meta-status-bar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 8px; margin-bottom: 32px; flex-wrap: wrap; gap: 16px;
}
.result-count { font-size: 0.95rem; color: var(--text-secondary); font-weight: 400; }

.tier-legend {
  display: flex; gap: 16px; align-items: center;
  background: rgba(255,255,255,0.03); padding: 6px 16px;
  border-radius: 100px; border: 1px solid var(--border-color);
}
.legend-item { font-size: 0.8rem; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.legend-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

.dot-graduated { background: var(--tier-graduated); box-shadow: 0 0 8px var(--tier-graduated); }
.dot-incubating { background: var(--tier-incubating); box-shadow: 0 0 8px var(--tier-incubating); }
.dot-member { background: var(--tier-member); box-shadow: 0 0 8px var(--tier-member); }
.dot-external { background: var(--tier-external); box-shadow: 0 0 8px var(--tier-external); }

/* Dynamic Landscape Layout Groups */
.landscape-grid { display: flex; flex-direction: column; gap: 48px; }

.landscape-category-group {
  background: rgba(15, 22, 53, 0.2); border: 1px solid var(--border-color);
  border-radius: 28px; padding: 32px; position: relative;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.landscape-category-title {
  font-family: var(--font-heading); font-size: 1.8rem; font-weight: 700;
  color: var(--text-primary); margin-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 12px;
  display: flex; align-items: center; gap: 12px;
}

.subcat-group { margin-bottom: 36px; }
.subcat-group:last-child { margin-bottom: 0; }
.subcat-title {
  font-family: var(--font-heading); font-size: 1.2rem; font-weight: 600;
  color: var(--text-secondary); margin-bottom: 20px;
  display: flex; align-items: center; gap: 8px;
}

.items-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px;
}

/* Landscape Project Card */
.project-card {
  background: var(--bg-surface); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color); border-radius: 20px; padding: 24px;
  display: flex; flex-direction: column; gap: 14px;
  transition: var(--transition-smooth); position: relative; overflow: hidden;
}

.project-card::before {
  content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px;
  background: var(--border-color); transition: var(--transition-smooth);
}

/* Tier Border Top Highlights */
.tier-card-graduated::before { background: var(--tier-graduated); }
.tier-card-incubating::before { background: var(--tier-incubating); }
.tier-card-member::before { background: var(--tier-member); }
.tier-card-external::before { background: var(--tier-external); }

.project-card:hover {
  transform: translateY(-4px); background: var(--bg-surface-hover);
  border-color: var(--border-hover); box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; }
.card-title { font-family: var(--font-heading); font-size: 1.25rem; font-weight: 600; color: var(--text-primary); }

.project-tier-badge {
  font-size: 0.7rem; font-weight: 600; padding: 3px 8px; border-radius: 6px;
  text-transform: uppercase; letter-spacing: 0.5px; display: flex; align-items: center; gap: 4px;
}
.badge-graduated { background: rgba(0, 245, 212, 0.15); border: 1px solid var(--tier-graduated); color: var(--tier-graduated); }
.badge-incubating { background: rgba(155, 93, 229, 0.15); border: 1px solid var(--tier-incubating); color: #d3a4ff; }
.badge-member { background: rgba(0, 180, 216, 0.15); border: 1px solid var(--tier-member); color: #8ae4ff; }
.badge-external { background: rgba(241, 91, 181, 0.15); border: 1px solid var(--tier-external); color: #ff9bda; }

.card-desc { font-size: 0.9rem; color: var(--text-secondary); flex-grow: 1; line-height: 1.5; }

.card-links {
  display: flex; gap: 12px; padding-top: 12px; border-top: 1px solid rgba(255,255,255,0.04);
}
.project-link {
  font-size: 0.8rem; font-weight: 600; color: var(--accent-teal);
  text-decoration: none; display: flex; align-items: center; gap: 4px;
}
.project-link:hover { text-decoration: underline; color: #5cffd6; }

/* Real-Time Text Query Highlight Match Style */
mark.match-highlight {
  background: rgba(0, 245, 212, 0.25); color: var(--accent-teal);
  border-bottom: 1px solid var(--accent-teal); padding: 0 2px; border-radius: 2px;
}

/* Empty State Container */
.empty-state {
  text-align: center; padding: 60px 20px; background: var(--bg-surface);
  border: 1px dashed var(--border-color); border-radius: 20px; width: 100%;
}
.empty-state p { color: var(--text-secondary); font-size: 1.1rem; margin-bottom: 8px; }
.empty-state span { color: var(--text-muted); font-size: 0.9rem; }

/* Footer Style */
.app-footer {
  text-align: center; margin-top: 64px; padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.04); color: var(--text-muted); font-size: 0.85rem;
}

/* Style Toggle Button */
.style-toggle-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  gap: 8px;
}
.style-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent-teal);
  box-shadow: 0 0 15px var(--glow-teal);
}

/* ==================== MODE 2: CNCF LANDSCAPE 2 EMULATION ==================== */
body.cncf-mode {
  /* Override CSS custom properties so ALL var()-based child styles update automatically */
  --bg-main: #f8fafc;
  --bg-surface: rgba(255, 255, 255, 0.85);
  --bg-surface-hover: rgba(255, 255, 255, 0.95);
  --border-color: #e2e8f0;
  --border-hover: rgba(59, 130, 246, 0.4);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --accent-teal: #3b82f6;
  --glow-teal: rgba(59, 130, 246, 0.15);

  background-color: #f8fafc;
  color: #0f172a;
}
body.cncf-mode .app-container {
  max-width: 1600px;
}
body.cncf-mode .bg-glow {
  display: none;
}

/* Headers & Control Hub Overrides */
body.cncf-mode .app-header h1 {
  background: none;
  color: #0f172a;
  -webkit-text-fill-color: #0f172a;
}
body.cncf-mode .subtitle {
  color: #475569;
}
body.cncf-mode .back-link {
  color: #64748b;
}
body.cncf-mode .back-link:hover {
  color: #0f172a;
}
body.cncf-mode .badge {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #475569;
}
body.cncf-mode .style-toggle-btn {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}
body.cncf-mode .style-toggle-btn:hover {
  background: #f1f5f9;
  border-color: #64748b;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

/* Control Hub Light Mode */
body.cncf-mode .control-hub {
  background: rgba(255, 255, 255, 0.85);
  border-color: #e2e8f0;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
}
body.cncf-mode #search-input {
  background: #ffffff;
  border-color: #cbd5e1;
  color: #0f172a;
}
body.cncf-mode #search-input:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
  background: #ffffff;
}
body.cncf-mode .cat-btn {
  background: #ffffff;
  border-color: #e2e8f0;
  color: #475569;
}
body.cncf-mode .cat-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #0f172a;
}
body.cncf-mode .cat-btn.active {
  background: #0f172a;
  color: #ffffff;
  border-color: #0f172a;
  box-shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.2);
}

/* Legend & Meta Light Mode */
body.cncf-mode .result-count {
  color: #475569;
}
body.cncf-mode .tier-legend {
  background: #ffffff;
  border-color: #e2e8f0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
body.cncf-mode .legend-item {
  color: #475569;
}

/* Category Boxes Light Mode */
body.cncf-mode .landscape-category-group {
  background: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  border-radius: 16px;
  padding: 40px;
}
body.cncf-mode .landscape-category-title {
  color: #0f172a;
  border-bottom-color: #e2e8f0;
}
body.cncf-mode .subcat-title {
  color: #334155;
}

/* Project Cards Light Mode */
body.cncf-mode .project-card {
  background: #f8fafc;
  border-color: #e2e8f0;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  border-radius: 12px;
}
body.cncf-mode .project-card:hover {
  background: #ffffff;
  border-color: #cbd5e1;
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}
body.cncf-mode .card-title {
  color: #0f172a;
}
body.cncf-mode .card-desc {
  color: #475569;
}
body.cncf-mode .card-links {
  border-top-color: #e2e8f0;
}
body.cncf-mode .project-link {
  color: #2563eb;
}
body.cncf-mode .project-link:hover {
  color: #1d4ed8;
}
body.cncf-mode .app-footer {
  border-top-color: #e2e8f0;
  color: #64748b;
}

@media (max-width: 768px) {
  .app-header h1 { font-size: 2.2rem; }
  .landscape-category-group { padding: 20px; }
  .items-grid { grid-template-columns: 1fr; }
  .app-container { padding: 20px 16px; }
  .control-hub { padding: 16px; }
}