/* Veluma — Lumenasa AI · Chat Vessel
 *
 * The full-screen overlay + the reusable chat panel (also embedded in Propose).
 * References tokens.css only; no hard-coded brand values beyond token fallbacks.
 */

/* ─────────────────────────────────────────────
 * Full-screen overlay
 * ───────────────────────────────────────────── */

.lumenasa-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-surface-overlay);
  backdrop-filter: blur(3px);
  display: grid;
  place-items: center;
  z-index: var(--z-modal);
  padding: var(--space-6);
  animation: lumenasa-fade var(--duration-fast) var(--easing-default);
}

@keyframes lumenasa-fade { from { opacity: 0; } to { opacity: 1; } }

body.lumenasa-open { overflow: hidden; }

.lumenasa-vessel {
  width: 100%;
  max-width: 1080px;
  height: min(88vh, 900px);
  background: var(--color-surface-page);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.lumenasa-vessel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--color-brand-anchor);
  color: var(--color-text-inverse);
  flex: 0 0 auto;
}

.lumenasa-vessel-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.lumenasa-vessel-glyph {
  color: var(--color-brand-primary);
  font-size: var(--font-size-lg);
  line-height: 1;
}

.lumenasa-vessel-title {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-tight);
}

.lumenasa-vessel-close {
  color: var(--color-text-inverse);
  font-size: var(--font-size-md);
  line-height: 1;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  opacity: 0.8;
  transition: opacity var(--duration-fast) var(--easing-default),
              background var(--duration-fast) var(--easing-default);
}
.lumenasa-vessel-close:hover { opacity: 1; background: rgba(255, 255, 255, 0.12); }

.lumenasa-vessel-body {
  display: grid;
  grid-template-columns: 260px 1fr;
  flex: 1 1 auto;
  min-height: 0;
}

/* ─────────────────────────────────────────────
 * Conversation rail (overlay only)
 * ───────────────────────────────────────────── */

.lumenasa-rail {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border-soft);
  background: var(--color-surface-card);
  min-height: 0;
}

.lumenasa-new-btn {
  margin: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-action-primary);
  color: var(--color-on-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: background var(--duration-fast) var(--easing-default),
              color var(--duration-fast) var(--easing-default);
}
.lumenasa-new-btn:hover {
  background: var(--color-action-primary-hover);
  color: var(--color-text-inverse);
}

.lumenasa-rail-list {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 0 var(--space-2) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lumenasa-rail-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  text-align: left;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: background var(--duration-fast) var(--easing-default);
}
.lumenasa-rail-item:hover { background: var(--color-brand-anchor-soft); }
.lumenasa-rail-item.is-active {
  background: var(--color-action-primary-soft);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.lumenasa-rail-item-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 auto;
}

.lumenasa-rail-item-del {
  flex: 0 0 auto;
  opacity: 0;
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  padding: 0 var(--space-1);
  transition: opacity var(--duration-fast) var(--easing-default);
}
.lumenasa-rail-item:hover .lumenasa-rail-item-del { opacity: 0.7; }
.lumenasa-rail-item-del:hover { opacity: 1; color: var(--color-status-error); }

.lumenasa-rail-empty {
  padding: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.lumenasa-panel-host {
  min-height: 0;
  display: flex;
}

/* ─────────────────────────────────────────────
 * Chat panel — shared by overlay + embeds
 * ───────────────────────────────────────────── */

.lumenasa-panel {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
}

.lumenasa-thread {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.lumenasa-msg { display: flex; }
.lumenasa-msg-user { justify-content: flex-end; }
.lumenasa-msg-assistant { justify-content: flex-start; }

.lumenasa-bubble {
  max-width: 78%;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  box-shadow: var(--shadow-sm);
}
.lumenasa-bubble p { margin: 0; }
.lumenasa-bubble p + p { margin-top: var(--space-3); }

.lumenasa-msg-user .lumenasa-bubble {
  background: var(--color-brand-anchor);
  color: var(--color-text-inverse);
  border-bottom-right-radius: var(--radius-sm);
}
.lumenasa-msg-assistant .lumenasa-bubble {
  background: var(--color-surface-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-soft);
  border-bottom-left-radius: var(--radius-sm);
}

.lumenasa-bubble-error {
  background: #FCECEC !important;
  color: var(--color-status-error) !important;
  border-color: rgba(184, 40, 40, 0.25) !important;
}

/* Typing indicator */
.lumenasa-typing { display: inline-flex; gap: 4px; align-items: center; }
.lumenasa-typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-text-muted);
  animation: lumenasa-bounce 1.2s infinite ease-in-out;
}
.lumenasa-typing span:nth-child(2) { animation-delay: 0.15s; }
.lumenasa-typing span:nth-child(3) { animation-delay: 0.3s; }
@keyframes lumenasa-bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
  30% { transform: translateY(-4px); opacity: 1; }
}

.lumenasa-loading {
  display: grid;
  place-items: center;
  padding: var(--space-8);
}

/* Composer */
.lumenasa-composer {
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border-soft);
  background: var(--color-surface-card);
}

.lumenasa-input {
  flex: 1 1 auto;
  resize: none;
  max-height: 160px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius-lg);
  background: var(--color-surface-page);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-base);
  transition: border-color var(--duration-fast) var(--easing-default),
              box-shadow var(--duration-fast) var(--easing-default);
}
.lumenasa-input:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-focus);
}

.lumenasa-send {
  flex: 0 0 auto;
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-action-primary);
  color: var(--color-on-primary);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  display: grid;
  place-items: center;
  transition: background var(--duration-fast) var(--easing-default),
              color var(--duration-fast) var(--easing-default);
}
.lumenasa-send:hover:not(:disabled) {
  background: var(--color-action-primary-hover);
  color: var(--color-text-inverse);
}

.lumenasa-disclaimer {
  padding: 0 var(--space-6) var(--space-3);
  background: var(--color-surface-card);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  text-align: center;
}

/* ─────────────────────────────────────────────
 * Embedded mode — a chat panel dropped into a module (e.g. Propose).
 * Give it a bordered card frame and a sensible height.
 * ───────────────────────────────────────────── */

.lumenasa-embed {
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 520px;
  display: flex;
  background: var(--color-surface-page);
}
.lumenasa-embed .lumenasa-panel { min-height: 0; }

/* ─────────────────────────────────────────────
 * Responsive — collapse the rail on small screens
 * ───────────────────────────────────────────── */

@media (max-width: 768px) {
  .lumenasa-overlay { padding: 0; }
  .lumenasa-vessel {
    max-width: none;
    height: 100vh;
    border-radius: 0;
  }
  .lumenasa-vessel-body { grid-template-columns: 1fr; }
  .lumenasa-rail { display: none; }
  .lumenasa-thread { padding: var(--space-4); }
  .lumenasa-composer { padding: var(--space-3) var(--space-4); }
  .lumenasa-bubble { max-width: 88%; }
}

/* ── Docked variant (Consult) ─────────────────────────────────────────────
   LAI pins to the right edge while the page behind it — the Propose review
   gate — stays fully visible AND interactive on the left, so the advisor can
   read LAI's notes and type feedback into PW without closing. Opted into via
   the .lumenasa-dock class (set in lumenasa-ai.js when Consult opens it); the
   default full-screen overlay is unchanged. The overlay itself shrinks to the
   right strip — it does not cover the left, so there is no backdrop, no blur,
   and nothing to intercept clicks on the Propose side. */
.lumenasa-overlay.lumenasa-dock {
  top: 0;
  right: 0;
  bottom: 0;
  left: auto;
  width: min(42vw, 560px);
  max-width: 92vw;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 0;
  display: block;
  place-items: initial;
  animation: none;
}
.lumenasa-overlay.lumenasa-dock .lumenasa-vessel {
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  border-radius: 0;
  box-shadow: -8px 0 32px rgba(28, 2, 100, 0.18);
}
/* Chat gets the full (narrower) dock width — hide the conversation rail. */
.lumenasa-overlay.lumenasa-dock .lumenasa-vessel-body { grid-template-columns: 1fr; }
.lumenasa-overlay.lumenasa-dock .lumenasa-rail { display: none; }
/* Roomier entry box in the narrow dock. */
.lumenasa-overlay.lumenasa-dock .lumenasa-input { min-height: 76px; }
/* Keep the page behind the dock scrollable (overrides body.lumenasa-open). */
body.lumenasa-docked { overflow: auto; }
/* Narrow screens: no room beside PW, so the dock takes the full width. */
@media (max-width: 900px) {
  .lumenasa-overlay.lumenasa-dock { width: 100vw; max-width: 100vw; }
}