/* =========================================================================
   Nexus · sidebar.css — left rail: brand, conversations list with fingerprint,
   docs dropzone, settings entry.
   ========================================================================= */

#nx-rail-left {
  --pad-x: 14px;
}

.nx-rail-section {
  padding: 14px var(--pad-x) 8px;
}

.nx-rail-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px var(--pad-x) 10px;
  border-bottom: 1px solid var(--nx-line);
}

.nx-rail-newchat {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: calc(100% - calc(var(--pad-x) * 2));
  margin: 12px var(--pad-x);
  padding: 10px 12px;
  border-radius: var(--nx-radius);
  background: linear-gradient(180deg, var(--nx-accent) 0%, var(--nx-accent-2) 100%);
  color: var(--nx-bg);
  font-family: var(--nx-font-display);
  font-weight: 600;
  font-size: 13px;
  box-shadow: var(--nx-shadow-soft), var(--nx-shadow-inset);
  transition: transform var(--nx-dur-fast) var(--nx-ease),
              box-shadow var(--nx-dur-base) var(--nx-ease);
}
.nx-rail-newchat:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--nx-accent-soft), 0 0 22px var(--nx-glow);
}
.nx-rail-newchat:active { transform: translateY(1px); }

.nx-section-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px var(--pad-x) 6px;
  font-family: var(--nx-font-vfd);
  text-transform: uppercase;
  font-size: 10px;
  letter-spacing: .25em;
  color: var(--nx-muted);
}

.nx-conv-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 var(--pad-x) 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 80px;
}

/* Conversation row with deterministic fingerprint sparkline */
.nx-conv-row {
  display: grid;
  grid-template-columns: 28px 1fr auto;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--nx-radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--nx-dur-fast) var(--nx-ease),
              border-color var(--nx-dur-fast) var(--nx-ease);
}
.nx-conv-row:hover {
  background: var(--nx-surface-2);
  border-color: var(--nx-line);
}
.nx-conv-row[data-active="true"] {
  background: var(--nx-accent-soft);
  border-color: var(--nx-accent-soft);
}

.nx-fingerprint {
  width: 28px; height: 18px;
  color: var(--nx-accent);
  opacity: .8;
}
.nx-conv-row[data-active="true"] .nx-fingerprint { opacity: 1; }

.nx-conv-title {
  font-size: 13px;
  color: var(--nx-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nx-conv-time {
  font-family: var(--nx-font-pixel);
  font-size: 13px;
  color: var(--nx-muted);
  letter-spacing: .04em;
}

/* Docs dropzone */
#nx-docs-dropzone {
  margin: 12px var(--pad-x);
  padding: 14px;
  border: 1px dashed var(--nx-line);
  border-radius: var(--nx-radius);
  background: var(--nx-surface);
  text-align: center;
  font-size: 11px;
  color: var(--nx-text-2);
  cursor: pointer;
  transition: border-color var(--nx-dur-base) var(--nx-ease),
              background var(--nx-dur-base) var(--nx-ease);
}
#nx-docs-dropzone:hover,
#nx-docs-dropzone[data-drop="true"] {
  border-color: var(--nx-accent);
  background: var(--nx-accent-soft);
  color: var(--nx-accent-2);
}
#nx-docs-dropzone .nx-drop-ico {
  font-family: var(--nx-font-arcade);
  font-size: 10px;
  display: block;
  margin-bottom: 6px;
  color: var(--nx-accent);
}

/* Footer settings entry */
.nx-rail-foot {
  border-top: 1px solid var(--nx-line);
  padding: 10px var(--pad-x);
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: linear-gradient(0deg, var(--nx-surface) 0%, transparent 100%);
}

.nx-profile-pill {
  display: grid;
  grid-template-columns: 32px 1fr 16px;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: var(--nx-surface-2);
  border: 1px solid var(--nx-line);
  border-radius: var(--nx-radius);
  text-align: left;
  transition: all var(--nx-dur-fast) var(--nx-ease);
}
.nx-profile-pill:hover {
  border-color: var(--nx-accent-soft);
  transform: translateY(-1px);
}
.nx-profile-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-family: var(--nx-font-mono);
  font-weight: 700;
  font-size: 13px;
  background: linear-gradient(180deg, var(--nx-accent), var(--nx-accent-2));
  color: var(--nx-bg);
  box-shadow: var(--nx-shadow-inset);
}
.nx-profile-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--nx-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nx-profile-state {
  font-family: var(--nx-font-pixel);
  font-size: 12px;
  color: var(--nx-muted);
  letter-spacing: .03em;
}