/* AI Assistant — floating bottom-right widget. Kept in its own
   stylesheet so the rest of the dashboard doesn't grow. */

/* ────────── FAB (floating action button) ────────── */

.assistant-fab {
  position: fixed;
  bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  right:  calc(var(--space-4) + env(safe-area-inset-right, 0px));
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 30;
  transition: transform var(--t-fast), background var(--t-fast);
  border: none;
  cursor: pointer;
}

.assistant-fab:hover { background: var(--color-accent-hover); }
.assistant-fab:active { transform: scale(0.95); }
.assistant-fab .material-icons { font-size: 26px; }

/* While the panel is open, hide the FAB so it doesn't overlap the header */
#assistant-root.is-open .assistant-fab { display: none; }

/* ────────── Chat panel ────────── */

.assistant-panel {
  position: fixed;
  bottom: calc(var(--space-4) + env(safe-area-inset-bottom, 0px));
  right:  calc(var(--space-4) + env(safe-area-inset-right, 0px));
  width: min(380px, calc(100vw - 32px));
  height: min(560px, calc(100vh - var(--topbar-height) - 32px));
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 30;
  display: none;
  flex-direction: column;
  overflow: hidden;
}

#assistant-root.is-open .assistant-panel { display: flex; }

/* Header */
.assistant-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.assistant-header-icon {
  color: var(--color-accent);
  font-size: 20px !important;
}

.assistant-title {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
}

.assistant-header-btn {
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast);
}

.assistant-header-btn:hover {
  background: var(--color-surface-3);
  color: var(--color-text);
}

.assistant-header-btn .material-icons { font-size: 18px; }

/* Messages */
.assistant-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  scroll-behavior: smooth;
}

.assistant-msg {
  max-width: 85%;
  font-size: 13px;
  line-height: 1.5;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  word-wrap: break-word;
  white-space: pre-wrap;
}

.assistant-msg.user {
  align-self: flex-end;
  background: var(--color-accent);
  color: white;
  border-bottom-right-radius: 2px;
}

.assistant-msg.bot {
  align-self: flex-start;
  background: var(--color-surface-3);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-bottom-left-radius: 2px;
}

.assistant-msg.system {
  align-self: center;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 11px;
  font-style: italic;
  text-align: center;
  max-width: 100%;
}

.assistant-msg.bot.is-thinking::after {
  content: "▋";
  animation: blink 1s steps(2) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Empty state */
.assistant-empty {
  text-align: center;
  color: var(--color-text-muted);
  padding: var(--space-5) var(--space-4);
  font-size: 12px;
  line-height: 1.6;
}

.assistant-empty .material-icons {
  font-size: 36px !important;
  color: var(--color-text-faint);
  display: block;
  margin-bottom: var(--space-2);
}

.assistant-provider-picker {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin: var(--space-3) 0;
}

.assistant-provider-btn {
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface-3);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full, 999px);
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
}

.assistant-provider-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.assistant-provider-btn.is-active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-accent-contrast, #fff);
}

/* Input */
.assistant-input-row {
  display: flex;
  gap: var(--space-2);
  align-items: flex-end;
  padding: var(--space-3) var(--space-4);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-2);
  flex-shrink: 0;
}

.assistant-input {
  flex: 1;
  min-width: 0;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-3);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 13px;
  resize: none;
  line-height: 1.4;
  max-height: 120px;
  min-height: 36px;
}

.assistant-input:focus { border-color: var(--color-accent); }

.assistant-send-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background var(--t-fast);
}

.assistant-send-btn:hover:not(:disabled) { background: var(--color-accent-hover); }
.assistant-send-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.assistant-send-btn .material-icons { font-size: 18px; }

/* ────────── API-key modal ────────── */

.assistant-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 40;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.assistant-modal-backdrop.is-open { display: flex; }

.assistant-modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  max-width: 460px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.assistant-modal h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.assistant-modal h2 .material-icons { color: var(--color-accent); }

.assistant-modal-body {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.assistant-modal-body code {
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  padding: 1px 6px;
  border-radius: 3px;
  color: var(--color-text);
}

.assistant-modal-body a {
  color: var(--color-accent);
}

.assistant-modal-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-3);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 12px;
  margin-bottom: var(--space-3);
}

.assistant-modal-input:focus { border-color: var(--color-accent); outline: none; }

.assistant-modal-actions {
  display: flex;
  gap: var(--space-2);
  justify-content: flex-end;
}

.assistant-modal-privacy {
  font-size: 11px;
  color: var(--color-text-faint);
  background: var(--color-surface-3);
  border-left: 3px solid var(--color-accent);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
}