/* ============================================
   TOOLSLAB EXCLUSIVE — CHAT UI
   Layout and styling for the Exclusive Chat.
   Mirrors the Lite chat but with Exclusive tokens,
   larger borders, gold glows, and the Master Tool
   merged answer card treatment.
   ============================================ */

/* ──────────────── CHAT TOPBAR ──────────────── */
.ex-chat-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--sp-4);
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border-x, rgba(200,155,60,0.18));
  flex-shrink: 0;
  background: var(--bg-app);
}

.ex-chat-topbar-left {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}

.ex-chat-hamburger {
  display: none;
}

.ex-chat-title-group {
  display: flex;
  flex-direction: column;
}
.ex-chat-title {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}
.ex-chat-subtitle {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

/* AI Status / Master Tool Topbar Pill */
.ex-ai-status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(200,155,60,0.1);
  border: 1px solid rgba(200,155,60,0.25);
  border-radius: var(--r-full);
  font-size: 11px;
  font-weight: 600;
  color: #C89B3C;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.ex-ai-status-pill.is-fusing {
  animation: ex-pulse-glow 2s infinite;
}
@keyframes ex-pulse-glow {
  0%, 100% { box-shadow: 0 0 0 rgba(200,155,60,0); }
  50% { box-shadow: 0 0 12px rgba(200,155,60,0.3); }
}
.ex-ai-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #C89B3C;
  box-shadow: 0 0 4px #C89B3C;
}

.ex-chat-topbar-right {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

/* ──────────────── MESSAGE LIST ──────────────── */
.ex-chat-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--sp-4);
  scroll-behavior: smooth;
}

/* Empty State */
.ex-chat-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-secondary);
}
.ex-chat-empty-icon {
  width: 64px; height: 64px;
  border-radius: var(--r-2xl);
  background: linear-gradient(135deg, rgba(200,155,60,0.15), transparent);
  border: 1px solid var(--border-x);
  display: flex; align-items: center; justify-content: center;
  color: #C89B3C;
  margin-bottom: var(--sp-4);
  box-shadow: var(--sh-glow);
}
.ex-chat-empty-icon svg { width: 32px; height: 32px; }

/* Messages */
.ex-msg {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  margin-bottom: var(--sp-6);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.ex-msg-user {
  align-items: flex-end;
}
.ex-msg-user .ex-msg-bubble {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-xl) var(--r-xl) 4px var(--r-xl);
  padding: var(--sp-3) var(--sp-4);
  max-width: 85%;
  font-size: var(--fs-base);
  line-height: 1.5;
}

.ex-msg-ai {
  align-items: flex-start;
}
.ex-msg-ai .ex-msg-bubble {
  color: var(--text-primary);
  font-size: var(--fs-base);
  line-height: 1.6;
  max-width: 100%;
  width: 100%;
}

/* Merged Answer Treatment (Master Tool) */
.ex-msg-ai.is-merged .ex-msg-bubble {
  background: rgba(200,155,60,0.03);
  border: 1px solid var(--border-x, rgba(200,155,60,0.25));
  border-left: 3px solid #C89B3C;
  border-radius: var(--r-md) var(--r-xl) var(--r-xl) var(--r-md);
  padding: var(--sp-4);
  box-shadow: 0 4px 12px rgba(200,155,60,0.05);
}
.ex-msg-merged-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  color: #C89B3C;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--sp-2);
}
.ex-msg-merged-badge svg { width: 14px; height: 14px; }

/* Formatting inside AI bubbles */
.ex-msg-ai pre {
  background: #111;
  border: 1px solid var(--border-med);
  border-radius: var(--r-md);
  padding: var(--sp-3);
  overflow-x: auto;
  margin: var(--sp-3) 0;
  font-size: var(--fs-sm);
  color: #e2e8f0;
}
.ex-msg-ai p { margin-bottom: var(--sp-3); }
.ex-msg-ai p:last-child { margin-bottom: 0; }

/* ──────────────── INPUT BAR ──────────────── */
.ex-input-wrapper {
  padding: var(--sp-3) var(--sp-4) var(--sp-4);
  background: linear-gradient(to top, var(--bg-app) 70%, transparent);
  position: relative;
  z-index: 10;
  flex-shrink: 0;
}
.ex-input-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-x, rgba(200,155,60,0.25));
  border-radius: var(--r-2xl, 32px);
  padding: var(--sp-2) var(--sp-3);
  box-shadow: var(--sh-glow, 0 0 28px rgba(200,155,60,0.15));
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease);
}
.ex-input-card:focus-within {
  border-color: rgba(200,155,60,0.6);
  box-shadow: 0 0 32px rgba(200,155,60,0.25);
}

.ex-textarea {
  width: 100%;
  min-height: 44px;
  max-height: 200px;
  padding: 10px 12px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: var(--fs-base);
  line-height: 1.5;
  resize: none;
  outline: none;
}
.ex-textarea::placeholder {
  color: var(--text-muted);
}

.ex-input-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--sp-2);
}

/* Master Tool Toggle + Model Picker Row */
.ex-input-models-row {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.ex-send-btn {
  width: 36px; height: 36px;
  border-radius: var(--r-full);
  background: linear-gradient(135deg, #C89B3C, #D4A843);
  border: none;
  color: #0a0a0a;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  box-shadow: 0 0 12px rgba(200,155,60,0.3);
  transition: transform var(--dur-fast) var(--ease),
              box-shadow var(--dur-fast) var(--ease);
}
.ex-send-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 0 16px rgba(200,155,60,0.5);
}
.ex-send-btn:disabled {
  background: var(--bg-surface-2);
  color: var(--text-muted);
  box-shadow: none;
  cursor: not-allowed;
}
.ex-send-btn svg { width: 16px; height: 16px; }

/* ──────────────── RESPONSIVE ──────────────── */
@media (max-width: 860px) {
  .ex-chat-hamburger { display: flex; }
  .ex-chat-topbar { padding: 0 var(--sp-3); }
  .ex-input-wrapper { padding: var(--sp-2) var(--sp-3) var(--sp-3); }
}