/* ============================================================
   BRAIN NAVIGATION — CSS for Diamond OS Brain Viewer
   Zone-specific aesthetics, transitions, cards
   ============================================================ */

/* ── New Design Tokens (additive) ── */
:root {
  /* Depth & spatial transitions */
  --transition-depth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-page-turn: 500ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-stagger-step: 40ms;

  /* Lobby */
  --lobby-card-min: 280px;
  --lobby-card-max: 400px;
  --lobby-card-aspect: 4 / 5;
  --lobby-card-radius: 16px;
  --lobby-card-tilt-max: 5deg;

  /* Zone pillars */
  --zone-pillar-radius: 12px;
  --zone-pillar-min-height: 240px;
  --zone-pillar-gap: 20px;
  --zone-ambient-duration: 20s;

  /* Cards (within zones) */
  --card-grid-min: 220px;
  --card-grid-gap: 16px;
  --card-radius: 10px;
  --card-lift-y: -4px;
  --card-lift-shadow: 0 12px 32px rgba(0,0,0,0.12);

  /* Search overlay */
  --search-overlay-blur: 16px;
  --search-overlay-bg: rgba(0, 0, 0, 0.6);
  --search-input-max-width: 600px;

  /* Breadcrumb */
  --breadcrumb-height: 48px;
  --breadcrumb-gap: 8px;

  /* Zone hue shifts */
  --zone-fundador-hue: 0deg;
  --zone-negocios-hue: 30deg;
  --zone-creators-hue: -40deg;
  --zone-operacao-hue: 0deg;
  --zone-operacao-saturation: 0.5;

  /* Type badge tokens */
  --badge-json-bg: rgba(16, 185, 129, 0.12);
  --badge-json-text: #10B981;
  --badge-md-bg: rgba(245, 158, 11, 0.12);
  --badge-md-text: #F59E0B;
  --badge-json-glow: 0 0 8px rgba(16, 185, 129, 0.3);
  --badge-md-glow: 0 0 8px rgba(245, 158, 11, 0.3);
}

[data-theme="dark"] {
  --search-overlay-bg: rgba(0, 0, 0, 0.75);
  --card-lift-shadow: 0 12px 32px rgba(0,0,0,0.4);
  --badge-json-bg: rgba(16, 185, 129, 0.15);
  --badge-json-text: #34D399;
  --badge-md-bg: rgba(245, 158, 11, 0.15);
  --badge-md-text: #FBBF24;
}

/* ── Brain App Container ── */
#brain-app {
  display: none;
  min-height: 100vh;
  /* Force dark mode always — matches internal dashboards */
  background: #0E0E12;
  color: #CDCDD0;
  --bg-page: #0E0E12;
  --bg-surface: #18181F;
  --bg-card: #1C1C24;
  --bg-card-hover: #222230;
  --bg-elevated: #252530;
  --bg-deep: #080810;
  --text-heading: #EDEDF0;
  --text-body: #CDCDD0;
  --text-secondary: #9898A0;
  --text-tertiary: #5C5C66;
  --accent: #A78BFA;
  --accent-light: #C4B5FD;
  --accent-faint: rgba(167, 139, 250, 0.08);
  --accent-border: rgba(167, 139, 250, 0.15);
  --accent-glow: rgba(167, 139, 250, 0.12);
  --border-rule: rgba(167, 139, 250, 0.08);
  --border-light: rgba(255, 255, 255, 0.06);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.3);
  --shadow-float: 0 8px 32px rgba(0,0,0,0.4);
  padding: 0;
}

/* ── Breadcrumb ── */
#brain-breadcrumb {
  display: none;
  align-items: center;
  gap: var(--breadcrumb-gap);
  height: var(--breadcrumb-height);
  padding: 0 2rem;
  background: #0E0E12;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: #5C5C66;
  position: sticky;
  top: 0;
  z-index: 100;
}

/* Force dark body when brain-nav is active */
body.brain-nav-active {
  background: #080810 !important;
}

.brain-bc-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 200ms ease;
}

.brain-bc-link:hover {
  color: var(--accent);
}

.brain-bc-sep {
  display: inline-flex;
  color: var(--text-caption);
  opacity: 0.5;
}

.brain-bc-current {
  color: var(--text-body);
  font-weight: 500;
}

/* ── View Transitions ── */
.brain-view-container {
  transition: transform var(--transition-depth), opacity var(--transition-depth), filter var(--transition-depth);
}

.brain-view-container.departing {
  transform: scale(0.97);
  opacity: 0.4;
  filter: blur(4px);
}

.brain-view-container.arriving {
  animation: brain-slide-in var(--transition-depth) forwards;
}

@keyframes brain-slide-in {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* ── Loading ── */
.brain-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.brain-spinner {
  width: 32px;
  height: 32px;
  border: 2px solid var(--border-rule);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: brain-spin 800ms linear infinite;
}

@keyframes brain-spin {
  to { transform: rotate(360deg); }
}

/* ── Empty State ── */
.brain-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
  text-align: center;
  padding: 3rem;
}

.brain-empty-icon {
  width: 64px;
  height: 64px;
  color: var(--text-caption);
  margin-bottom: 1.5rem;
}

.brain-empty-icon svg {
  width: 100%;
  height: 100%;
}

.brain-empty-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.brain-empty-sub {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

.brain-empty-sub code {
  background: var(--bg-surface);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
}

/* ============================================================
   LOBBY VIEW
   ============================================================ */
.lobby-view {
  max-width: 1200px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.lobby-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 400;
  color: var(--text-heading);
  text-align: center;
  margin-bottom: 3rem;
  letter-spacing: -0.01em;
}

.lobby-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(var(--lobby-card-min), var(--lobby-card-max)));
  gap: 2rem;
  justify-content: center;
}

.lobby-card {
  aspect-ratio: var(--lobby-card-aspect);
  border-radius: var(--lobby-card-radius);
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  transition: transform 150ms ease, box-shadow 300ms ease;
  will-change: transform;
  position: relative;
  animation: card-entrance 500ms ease backwards;
  animation-delay: calc(var(--i, 0) * var(--transition-stagger-step));
}

.lobby-card:hover {
  box-shadow: var(--card-lift-shadow);
}

.lobby-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.lobby-card-pattern {
  flex: 0 0 55%;
  opacity: 0.7;
}

.lobby-card-body {
  flex: 1;
  padding: 1.2rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0.4rem;
}

.lobby-card-icon {
  font-size: 1.4rem;
  color: var(--accent);
  margin-bottom: 0.2rem;
}

.lobby-card-name {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-heading);
}

.lobby-card-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-caption);
  justify-content: center;
}

/* ============================================================
   BRAIN HOME VIEW
   ============================================================ */
.brain-home-view {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.brain-home-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.brain-home-name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 400;
  color: var(--text-heading);
  letter-spacing: -0.02em;
}

.zone-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--zone-pillar-gap);
}

.zone-pillar {
  min-height: var(--zone-pillar-min-height);
  border-radius: var(--zone-pillar-radius);
  padding: 2rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: transform 250ms ease, box-shadow 250ms ease, border-color 250ms ease;
  position: relative;
  overflow: hidden;
  animation: card-entrance 500ms ease backwards;
  animation-delay: calc(var(--i, 0) * 80ms);
}

.zone-pillar:hover {
  transform: translateY(var(--card-lift-y));
  box-shadow: var(--card-lift-shadow);
}

.zone-pillar:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.zone-pillar-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
  transition: transform 400ms ease;
}

.zone-pillar-icon svg {
  width: 100%;
  height: 100%;
}

.zone-pillar-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  color: var(--text-heading);
}

.zone-pillar-desc {
  font-family: var(--font-body-serif);
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.zone-pillar-stats {
  margin-top: auto;
  display: flex;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-tertiary);
}

.zone-empty {
  opacity: 0.55;
}

/* ── Zone-specific styles ── */

/* Fundador: Radial gradient, soft shadows, inner glow */
[data-zone="fundador"].zone-pillar {
  background: radial-gradient(ellipse at center, var(--accent-faint), var(--bg-surface) 70%);
  border: 1px solid var(--border-light);
  box-shadow: inset 0 0 40px var(--accent-faint);
}

[data-zone="fundador"].zone-pillar .zone-pillar-name {
  font-family: var(--font-serif);
  font-weight: 700;
  letter-spacing: 0.1em;
}

[data-zone="fundador"].zone-pillar:hover .zone-pillar-icon {
  transform: scale(1.08);
}

/* Negocios: Conic gradient, bold left accent bar */
[data-zone="negocios"].zone-pillar {
  background: conic-gradient(from 180deg at 50% 50%, var(--bg-surface) 0deg, var(--accent-faint) 120deg, var(--bg-surface) 240deg, var(--accent-faint) 360deg);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--accent);
}

[data-zone="negocios"].zone-pillar .zone-pillar-name {
  font-weight: 800;
}

[data-zone="negocios"].zone-pillar:hover .zone-pillar-icon {
  transform: rotate(15deg);
}

/* Creators: Noise grain, watercolor bottom edge, italic desc */
[data-zone="creators"].zone-pillar {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-bottom: 3px solid transparent;
  background-image: linear-gradient(to bottom, transparent 80%, var(--accent-faint));
}

[data-zone="creators"].zone-pillar .zone-pillar-desc {
  font-style: italic;
}

[data-zone="creators"].zone-pillar .zone-pillar-name {
  font-family: var(--font-body-serif);
  font-weight: 700;
}

/* Operacao: Dot grid, dashed borders, monospace */
[data-zone="operacao"].zone-pillar {
  background-color: var(--bg-surface);
  background-image: radial-gradient(circle, var(--text-caption) 0.5px, transparent 0.5px);
  background-size: 18px 18px;
  border: 1px dashed var(--border-ornament);
}

[data-zone="operacao"].zone-pillar .zone-pillar-name {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.12em;
  font-size: 0.8rem;
}

[data-zone="operacao"].zone-pillar .zone-pillar-desc {
  font-family: var(--font-sans);
}

/* Ambient animation on pillars */
@keyframes zone-ambient {
  0%   { background-position: 0% 0%; }
  50%  { background-position: 100% 100%; }
  100% { background-position: 0% 0%; }
}

.zone-pillar::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, transparent, var(--accent-faint), transparent);
  background-size: 300% 300%;
  animation: zone-ambient var(--zone-ambient-duration) linear infinite;
  opacity: 0.4;
  pointer-events: none;
}

/* ============================================================
   ZONE VIEW
   ============================================================ */
.zone-view {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 2rem 4rem;
}

.zone-header {
  margin-bottom: 2rem;
}

.zone-header-icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.zone-header-icon svg {
  width: 100%;
  height: 100%;
}

.zone-header-name {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--text-heading);
  margin-bottom: 0.3rem;
}

.zone-header-desc {
  font-family: var(--font-body-serif);
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-style: italic;
}

.zone-header-rule {
  width: 100%;
  height: 1px;
  background: var(--border-rule);
  margin-top: 1.2rem;
}

.zone-section-label {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  color: var(--text-caption);
  margin: 1.5rem 0 0.8rem;
  text-transform: uppercase;
}

/* ── Collection Cards ── */
.zone-collections {
  display: flex;
  gap: var(--card-grid-gap);
  flex-wrap: wrap;
}

.zone-collection-card {
  flex: 0 0 auto;
  min-width: 180px;
  max-width: 260px;
  padding: 1.2rem 1.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--card-radius);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  transition: transform 200ms ease, box-shadow 200ms ease;
  animation: card-entrance 400ms ease backwards;
  animation-delay: calc(var(--i, 0) * var(--transition-stagger-step));
}

.zone-collection-card:hover {
  transform: translateY(var(--card-lift-y));
  box-shadow: var(--card-lift-shadow);
}

.zone-collection-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.zone-collection-icon {
  width: 22px;
  height: 22px;
  color: var(--accent);
}

.zone-collection-icon svg {
  width: 100%;
  height: 100%;
}

.zone-collection-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-heading);
}

.zone-collection-count {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-caption);
}

/* ── Document Cards ── */
.zone-documents {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--card-grid-min), 1fr));
  gap: var(--card-grid-gap);
}

.zone-doc-card {
  padding: 1.2rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--card-radius);
  cursor: pointer;
  position: relative;
  transition: transform 200ms ease, box-shadow 200ms ease;
  animation: card-entrance 400ms ease backwards;
  animation-delay: calc(var(--i, 0) * var(--transition-stagger-step));
}

.zone-doc-card:hover {
  transform: translateY(var(--card-lift-y));
  box-shadow: var(--card-lift-shadow);
}

.zone-doc-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.zone-doc-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.88rem;
  color: var(--text-heading);
  margin-top: 0.3rem;
  line-height: 1.35;
}

/* ── Type Badges ── */
.doc-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 0.15em 0.5em;
  border-radius: 4px;
  text-transform: uppercase;
}

.doc-badge-json {
  background: var(--badge-json-bg);
  color: var(--badge-json-text);
}

.doc-badge-md {
  background: var(--badge-md-bg);
  color: var(--badge-md-text);
}

.doc-badge-json:hover {
  box-shadow: var(--badge-json-glow);
}

.doc-badge-md:hover {
  box-shadow: var(--badge-md-glow);
}

/* ── Card Entrance Animation ── */
@keyframes card-entrance {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   ZONE-SPECIFIC DOCUMENT STYLES
   ============================================================ */

/* Fundador zone view */
.zone-view[data-zone="fundador"] .zone-header-name {
  font-family: var(--font-serif);
}

.zone-view[data-zone="fundador"] .zone-doc-card {
  box-shadow: inset 0 0 20px var(--accent-faint);
  border-color: var(--border-light);
}

/* Negocios zone view */
.zone-view[data-zone="negocios"] .zone-doc-card {
  border-left: 2px solid var(--accent);
}

.zone-view[data-zone="negocios"] .zone-header-name {
  font-weight: 800;
}

/* Creators zone view */
.zone-view[data-zone="creators"] .zone-header-desc {
  font-style: italic;
  font-family: var(--font-body-serif);
}

/* Operacao zone view */
.zone-view[data-zone="operacao"] .zone-header-name {
  font-family: var(--font-mono);
}

.zone-view[data-zone="operacao"] .zone-doc-card {
  border-style: dashed;
}

.zone-view[data-zone="operacao"] .zone-collection-card {
  border-style: dashed;
}

/* ============================================================
   SEARCH OVERLAY
   ============================================================ */
#brain-search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--search-overlay-bg);
  backdrop-filter: blur(var(--search-overlay-blur));
  -webkit-backdrop-filter: blur(var(--search-overlay-blur));
  align-items: flex-start;
  justify-content: center;
  padding-top: 18vh;
}

#brain-search-overlay.open {
  display: flex;
}

.brain-search-box {
  width: 100%;
  max-width: var(--search-input-max-width);
  margin: 0 1rem;
}

#brain-search-input {
  width: 100%;
  padding: 0.9rem 1.2rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  background: var(--bg-surface);
  color: var(--text-body);
  border: 1px solid var(--border-rule);
  border-radius: 10px;
  outline: none;
  transition: border-color 200ms ease;
}

#brain-search-input:focus {
  border-color: var(--accent);
}

#brain-search-input::placeholder {
  color: var(--text-caption);
}

#brain-search-results {
  margin-top: 0.5rem;
  background: var(--bg-surface);
  border-radius: 10px;
  border: 1px solid var(--border-light);
  overflow: hidden;
  max-height: 400px;
  overflow-y: auto;
}

#brain-search-results:empty {
  display: none;
}

.brain-search-item {
  padding: 0.8rem 1.2rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  transition: background 150ms ease;
  border-bottom: 1px solid var(--border-light);
}

.brain-search-item:last-child {
  border-bottom: none;
}

.brain-search-item:hover,
.brain-search-item.active {
  background: var(--accent-faint);
}

.brain-search-zone {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brain-search-name {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-heading);
}

.brain-search-path {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-caption);
}

.brain-search-empty {
  padding: 1.5rem;
  text-align: center;
  color: var(--text-caption);
  font-family: var(--font-sans);
  font-size: 0.9rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 800px) {
  .zone-grid {
    grid-template-columns: 1fr;
  }

  .lobby-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .zone-documents {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }

  .zone-collections {
    flex-direction: column;
  }

  .zone-collection-card {
    max-width: 100%;
  }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  .brain-view-container,
  .brain-view-container.departing,
  .brain-view-container.arriving,
  .lobby-card,
  .zone-pillar,
  .zone-collection-card,
  .zone-doc-card {
    animation: none !important;
    transition: none !important;
  }

  .zone-pillar::before {
    animation: none !important;
  }
}