/* ═══════════════════════════════════════════════════════════════════
   ROOM — Design System
   A metaontological layer for the spatial internet
   ═══════════════════════════════════════════════════════════════════ */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Custom Properties ── */
:root {
  /* Palette — Deep space + neural */
  --room-bg-deep:       #06060f;
  --room-bg:            #0a0a1a;
  --room-bg-raised:     #12122a;
  --room-bg-surface:    #1a1a3a;
  --room-bg-hover:      #22224a;
  
  --room-border:        rgba(120, 120, 255, 0.12);
  --room-border-bright: rgba(120, 120, 255, 0.25);
  
  --room-text:          #e8e8f0;
  --room-text-dim:      #8888aa;
  --room-text-muted:    #55557a;
  
  /* Node type colors */
  --room-place:         #4a9eff;
  --room-event:         #ffc44a;
  --room-perspective:   #b44aff;
  --room-artifact:      #4aff8b;
  
  /* Ontology colors */
  --room-onto-architectural: #ff6b6b;
  --room-onto-social:        #ffd93d;
  --room-onto-experiential:  #6bcb77;
  --room-onto-mythological:  #9b59b6;
  --room-onto-personal:      #3498db;
  --room-onto-bioregional:   #27ae60;
  
  /* Accents */
  --room-accent:        #7c6aff;
  --room-accent-glow:   rgba(124, 106, 255, 0.3);
  --room-accent-bright: #9d8aff;
  --room-cta:           #ff6adc;
  --room-cta-glow:      rgba(255, 106, 220, 0.3);
  
  /* Glass */
  --glass-bg:           rgba(18, 18, 42, 0.75);
  --glass-bg-solid:     rgba(18, 18, 42, 0.92);
  --glass-border:       rgba(120, 120, 255, 0.15);
  --glass-blur:         20px;
  
  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  
  /* Typography */
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --text-xs:  0.75rem;
  --text-sm:  0.875rem;
  --text-md:  1rem;
  --text-lg:  1.125rem;
  --text-xl:  1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  
  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  
  /* Z-index */
  --z-base: 1;
  --z-overlay: 10;
  --z-nav: 100;
  --z-modal: 1000;
  --z-toast: 2000;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

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

/* ── Ambient background ── */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(74, 158, 255, 0.06), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(180, 74, 255, 0.05), transparent),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(124, 106, 255, 0.03), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--room-text);
}

h1 { font-size: var(--text-5xl); font-weight: 800; letter-spacing: -0.03em; }
h2 { font-size: var(--text-3xl); font-weight: 700; letter-spacing: -0.02em; }
h3 { font-size: var(--text-2xl); font-weight: 600; }
h4 { font-size: var(--text-xl); font-weight: 600; }

p {
  color: var(--room-text-dim);
  line-height: 1.7;
  max-width: 65ch;
}

a {
  color: var(--room-accent-bright);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
  color: var(--room-cta);
}

code, pre {
  font-family: var(--font-mono);
}

code {
  background: var(--room-bg-raised);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  color: var(--room-accent-bright);
}

pre {
  background: var(--room-bg-raised);
  border: 1px solid var(--room-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  overflow-x: auto;
  font-size: var(--text-sm);
}

/* ── Glassmorphism ── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}

.glass-solid {
  background: var(--glass-bg-solid);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--room-border-bright);
  border-radius: var(--radius-md);
  background: var(--room-bg-raised);
  color: var(--room-text);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  user-select: none;
  white-space: nowrap;
}

.btn:hover {
  background: var(--room-bg-hover);
  border-color: var(--room-accent);
  box-shadow: 0 0 20px var(--room-accent-glow);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--room-accent), var(--room-cta));
  border: none;
  color: white;
  font-weight: 600;
  padding: var(--space-sm) var(--space-lg);
}

.btn-primary:hover {
  box-shadow: 0 0 30px var(--room-cta-glow), 0 0 60px var(--room-accent-glow);
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

/* ── Node Type Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-place       { background: rgba(74, 158, 255, 0.15); color: var(--room-place); border: 1px solid rgba(74, 158, 255, 0.3); }
.badge-event       { background: rgba(255, 196, 74, 0.15); color: var(--room-event); border: 1px solid rgba(255, 196, 74, 0.3); }
.badge-perspective { background: rgba(180, 74, 255, 0.15); color: var(--room-perspective); border: 1px solid rgba(180, 74, 255, 0.3); }
.badge-artifact    { background: rgba(74, 255, 139, 0.15); color: var(--room-artifact); border: 1px solid rgba(74, 255, 139, 0.3); }

/* ── Ontology Tags ── */
.ontology-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  border: 1px solid;
}

.ontology-architectural { color: var(--room-onto-architectural); border-color: rgba(255, 107, 107, 0.3); background: rgba(255, 107, 107, 0.1); }
.ontology-social        { color: var(--room-onto-social); border-color: rgba(255, 217, 61, 0.3); background: rgba(255, 217, 61, 0.1); }
.ontology-experiential  { color: var(--room-onto-experiential); border-color: rgba(107, 203, 119, 0.3); background: rgba(107, 203, 119, 0.1); }
.ontology-mythological  { color: var(--room-onto-mythological); border-color: rgba(155, 89, 182, 0.3); background: rgba(155, 89, 182, 0.1); }
.ontology-personal      { color: var(--room-onto-personal); border-color: rgba(52, 152, 219, 0.3); background: rgba(52, 152, 219, 0.1); }
.ontology-bioregional   { color: var(--room-onto-bioregional); border-color: rgba(39, 174, 96, 0.3); background: rgba(39, 174, 96, 0.1); }

/* ── Cards ── */
.card {
  background: var(--room-bg-raised);
  border: 1px solid var(--room-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration-normal) var(--ease-out);
}

.card:hover {
  border-color: var(--room-border-bright);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.card-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: 600;
}

/* ── Forms ── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--room-text-dim);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--room-bg-surface);
  border: 1px solid var(--room-border);
  border-radius: var(--radius-md);
  color: var(--room-text);
  font-family: var(--font-sans);
  font-size: var(--text-md);
  outline: none;
  transition: border-color var(--duration-fast) var(--ease-out);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--room-accent);
  box-shadow: 0 0 0 3px var(--room-accent-glow);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238888aa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(6, 6, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--room-border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--room-text);
  text-decoration: none;
}

.nav-brand span {
  background: linear-gradient(135deg, var(--room-accent), var(--room-cta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  list-style: none;
}

.nav-link {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--room-text-dim);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--room-text);
  background: var(--room-bg-raised);
}

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  top: 0;
  right: 0;
  width: 380px;
  height: 100vh;
  background: var(--glass-bg-solid);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border-left: 1px solid var(--glass-border);
  z-index: var(--z-overlay);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out);
  overflow-y: auto;
  padding: var(--space-3xl) var(--space-lg) var(--space-lg);
}

.sidebar.open {
  transform: translateX(0);
}

.sidebar-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-toast);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  transform: translateY(120%);
  transition: transform var(--duration-normal) var(--ease-spring);
  pointer-events: none;
}

.toast.show {
  transform: translateY(0);
  pointer-events: auto;
}

.toast-success {
  background: rgba(74, 255, 139, 0.15);
  border: 1px solid rgba(74, 255, 139, 0.3);
  color: var(--room-artifact);
}

.toast-error {
  background: rgba(255, 107, 107, 0.15);
  border: 1px solid rgba(255, 107, 107, 0.3);
  color: var(--room-onto-architectural);
}

/* ── Responsive helpers ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px var(--room-accent-glow); }
  50% { box-shadow: 0 0 40px var(--room-accent-glow), 0 0 60px var(--room-cta-glow); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

.animate-fade-in     { animation: fadeIn 0.5s var(--ease-out) both; }
.animate-fade-in-up  { animation: fadeInUp 0.6s var(--ease-out) both; }
.animate-pulse       { animation: pulse 2s ease-in-out infinite; }
.animate-glow        { animation: glow 3s ease-in-out infinite; }
.animate-float       { animation: float 4s ease-in-out infinite; }

/* Staggered delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--room-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--room-bg-hover);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--room-accent);
}

/* ── Selection ── */
::selection {
  background: var(--room-accent);
  color: white;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Mobile ── */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
  }

  .nav {
    padding: var(--space-sm) var(--space-md);
  }

  .nav-links {
    gap: var(--space-sm);
  }

  .sidebar {
    width: 100%;
  }

  .container {
    padding: 0 var(--space-md);
  }
}