/**
 * chat.css - Clinical AI Chat Styles
 * MH-633: Dual-mode reasoning & fact retrieval
 *
 * Structure:
 * 1. CSS Variables
 * 2. Container & Layout
 * 3. Header & Mode Indicator
 * 4. Welcome Screen
 * 5. Messages
 * 6. Composer (Input)
 * 7. Voice Input
 * 8. Responsive
 */

/* ============================================
   1. CSS VARIABLES
   ============================================ */

:root {
  /* Chat-specific colors */
  --chat-bg: #f9fafb;
  --chat-bg-white: #ffffff;
  --chat-border: #e5e7eb;
  --chat-text: #111827;
  --chat-text-secondary: #6b7280;
  --chat-text-muted: #9ca3af;

  /* Mode: Reasoning (Purple) */
  --chat-reasoning-bg: #faf5ff;
  --chat-reasoning-border: #e9d5ff;
  --chat-reasoning-text: #7c3aed;
  --chat-reasoning-icon: #8b5cf6;

  /* Mode: Facts (Blue) */
  --chat-facts-bg: #eff6ff;
  --chat-facts-border: #bfdbfe;
  --chat-facts-text: #2563eb;
  --chat-facts-icon: #3b82f6;

  /* Mode: Patient Context (Green) */
  --chat-patient-bg: #ecfdf5;
  --chat-patient-border: #a7f3d0;
  --chat-patient-text: #047857;

  /* User message */
  --chat-user-bg: #2563eb;
  --chat-user-text: #ffffff;

  /* Spacing */
  --chat-spacing-xs: 4px;
  --chat-spacing-sm: 8px;
  --chat-spacing-md: 16px;
  --chat-spacing-lg: 24px;
  --chat-spacing-xl: 32px;

  /* Border radius */
  --chat-radius-sm: 8px;
  --chat-radius-md: 12px;
  --chat-radius-lg: 16px;
  --chat-radius-full: 9999px;
}

/* ============================================
   2. CONTAINER & LAYOUT
   ============================================ */

.chat-container {
  display: flex;
  flex-direction: row;
  height: 100%;
  background: var(--chat-bg-white);
  overflow: visible;
  position: relative;
  z-index: 1;
}

.chat-main {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

/* ============================================
   2.1 CHAT HISTORY SIDEBAR
   ============================================ */

.chat-history-sidebar {
  width: clamp(200px, 20vw, 300px);
  min-width: 200px;
  max-width: 300px;
  background: var(--chat-bg-white);
  border-right: 1px solid var(--chat-border);
  display: flex;
  flex-direction: column;
  overflow: visible;
  transition:
    width 0.3s ease,
    min-width 0.3s ease,
    max-width 0.3s ease;
}

.chat-history-sidebar.collapsed {
  width: 42px;
  min-width: 42px;
  max-width: 42px;
  border-right: 1px solid var(--chat-border);
  overflow: hidden;
}

.chat-history-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--chat-spacing-md);
  border-bottom: 1px solid var(--chat-border);
  flex-shrink: 0;
  position: relative;
  z-index: 1000;
  overflow: visible;
}

/* When sidebar is collapsed, hide title and other buttons, keep only toggle */
.chat-history-sidebar.collapsed .chat-history-header {
  padding: var(--chat-spacing-sm);
  justify-content: center;
}

.chat-history-sidebar.collapsed .chat-history-title,
.chat-history-sidebar.collapsed .chat-new-thread-btn,
.chat-history-sidebar.collapsed .chat-history-list,
.chat-history-sidebar.collapsed .chat-new-general-thread-btn {
  display: none;
}

.chat-history-sidebar.collapsed .chat-history-toggle-btn {
  margin-right: 0;
}

.chat-history-title {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--chat-text);
  margin: 0;
}

.chat-history-title i {
  color: var(--chat-text-secondary);
}

.chat-new-thread-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: var(--chat-radius-sm);
  cursor: pointer;
  transition: background-color 0.15s;
  position: relative;
}

.chat-new-thread-btn:hover {
  background: #2563eb;
}

.chat-new-general-thread-btn {
  position: relative;
}

/* Simple white tooltips - appear instantly */
.chat-new-thread-btn[data-tooltip],
.chat-new-general-thread-btn[data-tooltip] {
  position: relative;
}

.chat-new-thread-btn[data-tooltip]:hover::after,
.chat-new-general-thread-btn[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: fixed;
  top: var(--tooltip-top, 0);
  left: var(--tooltip-left, 0);
  padding: 6px 10px;
  background: white;
  color: var(--chat-text);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--chat-radius-sm);
  border: 1px solid var(--chat-border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  pointer-events: none;
  z-index: 999999;
  transform: translate(-50%, -100%);
  margin-bottom: 8px;
}

.chat-history-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--chat-spacing-sm);
}

.chat-history-group {
  margin-bottom: var(--chat-spacing-md);
}

.chat-history-group-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--chat-text-muted);
  padding: var(--chat-spacing-sm) var(--chat-spacing-sm);
  margin-bottom: var(--chat-spacing-xs);
}

.chat-history-item {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  padding: var(--chat-spacing-sm) var(--chat-spacing-md);
  border-radius: var(--chat-radius-sm);
  cursor: pointer;
  transition: background-color 0.15s;
}

.chat-history-item:hover {
  background: var(--chat-bg);
}

.chat-history-item.active {
  background: var(--chat-reasoning-bg);
  border-left: 3px solid var(--chat-reasoning-text);
}

.chat-history-item-content {
  flex: 1;
  min-width: 0;
}

.chat-history-item-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--chat-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-history-item-meta {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  margin-top: 2px;
}

.chat-history-patient {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--chat-patient-text);
}

.chat-history-patient i {
  font-size: 9px;
}

.chat-history-count {
  font-size: 11px;
  color: var(--chat-text-muted);
}

.chat-history-delete {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  border-radius: var(--chat-radius-sm);
  color: var(--chat-text-muted);
  cursor: pointer;
  opacity: 0;
  transition: all 0.15s;
}

.chat-history-item:hover .chat-history-delete {
  opacity: 1;
}

.chat-history-delete:hover {
  background: #fef2f2;
  color: #dc2626;
}

/* Loading and empty states */
.chat-history-loading,
.chat-history-empty,
.chat-history-error,
.chat-loading-thread {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--chat-spacing-xl);
  text-align: center;
  color: var(--chat-text-muted);
  font-size: 13px;
  gap: var(--chat-spacing-sm);
}

.chat-history-loading i,
.chat-loading-thread i {
  font-size: 20px;
  color: var(--chat-text-secondary);
}

.chat-history-empty i {
  font-size: 28px;
  color: var(--chat-border);
}

.chat-history-empty-hint {
  font-size: 11px;
  color: var(--chat-text-muted);
}

.chat-history-error {
  color: #dc2626;
}

.chat-history-error i {
  font-size: 20px;
}

/* ============================================
   3. HEADER & MODE INDICATOR
   ============================================ */

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--chat-spacing-md) var(--chat-spacing-lg);
  background: var(--chat-bg-white);
  border-bottom: 1px solid var(--chat-border);
  flex-shrink: 0;
}

.chat-header-left {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-md);
}

.chat-header-text {
  display: flex;
  flex-direction: column;
}

.chat-header-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--chat-text);
  margin: 0;
  line-height: 1.3;
}

.chat-header-right {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-md);
}

/* Patient Context Display in Header */
.chat-patient-context {
  display: flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--chat-radius-sm);
  font-size: 13px;
  transition: all 0.2s;
}

.chat-patient-context.empty {
  background: var(--chat-bg);
  border: 1px dashed var(--chat-border);
}

.chat-patient-context.active {
  background: var(--chat-patient-bg);
  border: 1px solid var(--chat-patient-border);
}

.chat-patient-empty {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  color: var(--chat-text-muted);
}

.chat-patient-empty i {
  font-size: 14px;
}

.chat-patient-hint {
  font-size: 11px;
  color: var(--chat-text-muted);
  margin-left: var(--chat-spacing-sm);
}

.chat-patient-active {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-md);
}

.chat-patient-active > i {
  color: var(--chat-patient-text);
  font-size: 16px;
}

.chat-patient-info {
  display: flex;
  flex-direction: column;
}

.chat-patient-name {
  font-weight: 600;
  color: var(--chat-text);
  line-height: 1.2;
}

.chat-patient-details {
  font-size: 11px;
  color: var(--chat-text-secondary);
}

.chat-patient-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--chat-bg-white);
  border-radius: var(--chat-radius-full);
  font-size: 11px;
  color: var(--chat-patient-text);
}

.chat-patient-badge i {
  font-size: 10px;
}

/* ============================================
   4. WELCOME SCREEN
   ============================================ */

.chat-welcome {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--chat-spacing-xl);
  overflow-y: auto;
}

.chat-welcome-content {
  max-width: 800px;
  width: 100%;
}

.chat-welcome-header {
  text-align: center;
  margin-bottom: var(--chat-spacing-xl);
}

.chat-welcome-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--chat-spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.chat-welcome-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.chat-welcome-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--chat-text);
  margin: 0 0 var(--chat-spacing-sm);
}

/* Mode Cards */
.chat-mode-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--chat-spacing-lg);
  margin-bottom: var(--chat-spacing-xl);
}

.chat-mode-card {
  padding: var(--chat-spacing-lg);
  border-radius: var(--chat-radius-md);
  border: 2px solid;
}

.chat-mode-card.reasoning {
  background: var(--chat-reasoning-bg);
  border-color: var(--chat-reasoning-border);
}

.chat-mode-card.facts {
  background: var(--chat-facts-bg);
  border-color: var(--chat-facts-border);
}

.chat-mode-card-header {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  margin-bottom: var(--chat-spacing-sm);
}

.chat-mode-card-header i {
  font-size: 20px;
}

.chat-mode-card.reasoning .chat-mode-card-header i {
  color: var(--chat-reasoning-icon);
}

.chat-mode-card.facts .chat-mode-card-header i {
  color: var(--chat-facts-icon);
}

.chat-mode-card-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--chat-text);
  margin: 0;
}

.chat-mode-card-desc {
  font-size: 13px;
  color: var(--chat-text-secondary);
  margin: 0 0 var(--chat-spacing-md);
}

.chat-mode-card-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.chat-mode-card-list li {
  font-size: 12px;
  color: var(--chat-text-secondary);
  padding: 2px 0;
}

.chat-mode-card-list li::before {
  content: '•';
  margin-right: 6px;
}

/* Quick Prompts */
.chat-prompts {
  display: flex;
  flex-direction: column;
  gap: var(--chat-spacing-md);
}

.chat-prompts-header {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--chat-text-muted);
  margin: 0;
}

.chat-prompts-section {
  display: flex;
  flex-direction: column;
  gap: var(--chat-spacing-sm);
}

.chat-prompts-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
}

.chat-prompts-label.reasoning {
  color: var(--chat-reasoning-text);
}

.chat-prompts-label.facts {
  color: var(--chat-facts-text);
}

.chat-prompts-label.patient {
  color: var(--chat-patient-text);
}

.chat-prompts-label i {
  font-size: 10px;
}

.chat-prompts-list {
  display: flex;
  flex-direction: column;
  gap: var(--chat-spacing-xs);
}

.chat-prompt-btn {
  width: 100%;
  padding: var(--chat-spacing-sm) var(--chat-spacing-md);
  background: var(--chat-bg-white);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-sm);
  text-align: left;
  font-size: 13px;
  color: var(--chat-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.chat-prompt-btn:hover {
  border-color: var(--chat-reasoning-border);
  background: var(--chat-reasoning-bg);
}

/* ============================================
   5. DISCLAIMER
   ============================================ */

.chat-disclaimer {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  padding: var(--chat-spacing-sm) var(--chat-spacing-md);
  background: #fef3c7;
  border-bottom: 1px solid #fde68a;
  color: #92400e;
  font-size: 12px;
  font-weight: 500;
  position: relative;
}

.chat-disclaimer i {
  font-size: 14px;
  color: #d97706;
}

.chat-disclaimer-dismiss {
  margin-left: auto;
  background: none;
  border: none;
  color: #92400e;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background-color 0.15s,
    color 0.15s;
  opacity: 0.7;
}

.chat-disclaimer-dismiss:hover {
  background-color: rgba(146, 64, 14, 0.1);
  opacity: 1;
}

.chat-disclaimer-dismiss:active {
  background-color: rgba(146, 64, 14, 0.2);
}

.chat-disclaimer-dismiss i {
  font-size: 12px;
  color: inherit;
}

/* ============================================
   5. MESSAGES
   ============================================ */

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--chat-spacing-lg);
}

.chat-message {
  margin-bottom: var(--chat-spacing-md);
  animation: chatFadeIn 0.3s ease-out;
}

@keyframes chatFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* User Message */
.chat-message.user {
  display: flex;
  justify-content: flex-end;
}

.chat-message.user .chat-message-content {
  max-width: 80%;
  background: var(--chat-user-bg);
  color: var(--chat-user-text);
  border-radius: var(--chat-radius-md);
  padding: var(--chat-spacing-md);
}

.chat-message.user .chat-message-text {
  font-size: 14px;
  line-height: 1.5;
}

/* Assistant Message */
.chat-message.assistant {
  max-width: 90%;
  border-radius: var(--chat-radius-md);
  border: 2px solid;
  padding: var(--chat-spacing-lg);
}

.chat-message.assistant.reasoning {
  background: var(--chat-reasoning-bg);
  border-color: var(--chat-reasoning-border);
}

.chat-message.assistant.facts {
  background: var(--chat-facts-bg);
  border-color: var(--chat-facts-border);
}

.chat-message.assistant .chat-message-content {
  background: var(--chat-bg-white);
  border-radius: var(--chat-radius-sm);
  padding: var(--chat-spacing-md);
}

.chat-message.assistant .chat-message-text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--chat-text);
}

.chat-message.assistant .chat-message-text strong {
  font-weight: 600;
}

.chat-message.assistant .chat-message-text ul {
  padding-left: 20px;
  margin: var(--chat-spacing-sm) 0;
}

.chat-message.assistant .chat-message-text li {
  margin: 4px 0;
}

/* Citation links in message content (numbered references like [1], [2]) */
.chat-citation-link {
  color: #2563eb;
  text-decoration: none;
  font-weight: 600;
  transition: color 0.15s;
  cursor: pointer;
}

.chat-citation-link:hover {
  color: #1d4ed8;
  text-decoration: underline;
}

/* Superscript styling for citation numbers */
.chat-message-text sup {
  font-size: 0.75em;
  vertical-align: super;
  line-height: 0;
}

/* Citations */
.chat-message-citations {
  margin-top: var(--chat-spacing-md);
  padding-top: var(--chat-spacing-md);
  border-top: 1px solid var(--chat-border);
}

/* References Dropdown */
.chat-message-references {
  margin-top: var(--chat-spacing-md);
}

.chat-references-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--chat-spacing-sm) var(--chat-spacing-md);
  background: var(--chat-bg-white);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-sm);
  font-size: 13px;
  font-weight: 500;
  color: var(--chat-text);
  cursor: pointer;
  transition:
    background-color 0.15s,
    border-color 0.15s;
  text-align: left;
}

.chat-references-toggle:hover {
  background: var(--chat-bg);
  border-color: var(--chat-border-hover);
}

.chat-references-toggle i {
  font-size: 11px;
  color: var(--chat-text-secondary);
  transition: transform 0.2s;
}

.chat-references-toggle[aria-expanded='true'] i {
  transform: rotate(180deg);
}

.chat-references-dropdown {
  margin-top: var(--chat-spacing-sm);
  padding: var(--chat-spacing-sm);
  background: var(--chat-bg-white);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-sm);
  animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-citations-list {
  display: flex;
  flex-direction: column;
  gap: var(--chat-spacing-xs);
}

.chat-citation {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  padding: var(--chat-spacing-xs) var(--chat-spacing-sm);
  background: var(--chat-bg);
  border-radius: var(--chat-radius-sm);
  text-decoration: none;
  font-size: 12px;
  color: #2563eb;
  transition: background-color 0.15s;
}

.chat-citation:hover {
  background: var(--chat-bg-hover);
  color: #1d4ed8;
}

.chat-citation-index {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--chat-facts-bg);
  border-radius: var(--chat-radius-full);
  font-size: 10px;
  font-weight: 600;
  color: var(--chat-facts-text);
  flex-shrink: 0;
}

.chat-citation-title {
  flex: 1;
  font-weight: 500;
  color: #2563eb;
  text-decoration: underline;
}

.chat-citation-source {
  color: var(--chat-text-muted);
  font-size: 11px;
}

/* Patient Context */
.chat-message-context {
  margin-top: var(--chat-spacing-md);
  padding-top: var(--chat-spacing-md);
  border-top: 1px solid var(--chat-patient-border);
}

.chat-context-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--chat-patient-text);
  margin-bottom: var(--chat-spacing-xs);
}

.chat-context-content {
  font-size: 12px;
  color: var(--chat-text-secondary);
}

/* Error Message */
.chat-message.error .chat-message-error {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
  padding: var(--chat-spacing-md);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: var(--chat-radius-sm);
  color: #dc2626;
  font-size: 14px;
}

/* ============================================
   6. COMPOSER (INPUT)
   ============================================ */

.chat-composer {
  padding: var(--chat-spacing-md) var(--chat-spacing-lg);
  background: var(--chat-bg-white);
  border-top: 1px solid var(--chat-border);
  flex-shrink: 0;
}

.chat-composer-inner {
  display: flex;
  align-items: flex-end;
  gap: var(--chat-spacing-sm);
  background: var(--chat-bg);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-md);
  padding: var(--chat-spacing-sm);
  transition: border-color 0.15s;
}

.chat-composer-inner:focus-within {
  border-color: #3b82f6;
}

.chat-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--chat-spacing-sm) var(--chat-spacing-md);
  font-size: 14px;
  color: var(--chat-text);
  resize: none;
  min-height: 40px;
  max-height: 200px;
  line-height: 1.5;
}

.chat-input::placeholder {
  color: var(--chat-text-muted);
}

.chat-input:focus {
  outline: none;
}

.chat-composer-actions {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-xs);
  padding-bottom: 4px;
}

.chat-voice-btn,
.chat-send-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--chat-radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}

.chat-voice-btn {
  background: transparent;
  color: var(--chat-text-secondary);
}

.chat-voice-btn:hover:not(:disabled) {
  background: var(--chat-bg-white);
  color: var(--chat-text);
}

.chat-voice-btn.recording {
  background: #fef2f2;
  color: #dc2626;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.chat-send-btn {
  background: #3b82f6;
  color: white;
}

.chat-send-btn:hover:not(:disabled) {
  background: #2563eb;
}

.chat-send-btn:disabled {
  background: var(--chat-border);
  color: var(--chat-text-muted);
  cursor: not-allowed;
}

/* ============================================
   7. VOICE BUTTON STATES
   ============================================ */

/* Recording state - mic button changes to stop icon with red pulse */
.chat-voice-btn.recording {
  background: #dc2626;
  color: white;
  animation: voicePulse 1.2s ease-in-out infinite;
}

@keyframes voicePulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(220, 38, 38, 0);
  }
}

/* ============================================
   8. RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  .chat-history-sidebar {
    width: clamp(180px, 18vw, 250px);
    min-width: 180px;
    max-width: 250px;
  }
}

@media (max-width: 768px) {
  .chat-container {
    flex-direction: column;
  }

  /* Hide simplified elements for mobile cleanliness */
  .chat-welcome-header,
  .chat-mode-cards,
  .chat-prompts,
  .chat-header-title,
  .chat-disclaimer,
  .chat-general-description,
  .chat-patient-hint {
    display: none !important;
  }

  /* Compact Header */
  .chat-header {
    flex-direction: column;
    align-items: stretch;
    gap: var(--chat-spacing-xs);
    padding: var(--chat-spacing-xs) var(--chat-spacing-sm);
    border-bottom: none;
  }

  /* Compact Patient Context */
  .chat-patient-context {
    padding: 4px 8px;
    font-size: 11px;
    justify-content: center;
    background: transparent;
    border: none;
  }
  
  .chat-patient-context.empty {
    background: transparent;
    border: none;
    color: var(--chat-text-muted);
  }

  .chat-patient-empty {
    justify-content: center;
    font-size: 11px;
  }

  /* History Sidebar as minimal top bar */
  .chat-history-sidebar {
    width: 100%;
    min-width: 100%;
    max-height: 50px; /* Limit height */
    border-right: none;
    border-bottom: 1px solid var(--chat-border);
    display: none; /* Hide history sidebar on mobile for extreme simplicity if desired, or keep minimal */
  }
  
  /* If we keep history, make it minimal horizontal scroll */
  /* Re-enabling display for history but making it very small if needed. 
     User said "remove a lot of elements". History might be useful though. 
     Let's keep it visible but very compact as per original CSS, but maybe hide the labels */

  .chat-history-sidebar {
     display: flex; /* Restore display */
     max-height: 45px;
     padding: 0;
  }

  .chat-history-header {
    display: none; /* Hide the "Chat History" header/toggle */
  }

  .chat-history-list {
    display: flex;
    flex-direction: row;
    gap: var(--chat-spacing-sm);
    overflow-x: auto;
    overflow-y: hidden;
    padding: 4px var(--chat-spacing-sm);
    align-items: center;
    height: 100%;
  }

  .chat-history-group {
    display: flex;
    flex-direction: row;
    gap: var(--chat-spacing-sm);
    margin-bottom: 0;
  }

  .chat-history-group-label {
    display: none;
  }

  .chat-history-item {
    flex-shrink: 0;
    width: auto; /* Allow auto width */
    max-width: 120px;
    padding: 4px 8px;
    flex-direction: row; /* Horizontal content */
    align-items: center;
    background: var(--chat-bg);
    border: 1px solid var(--chat-border);
    height: 32px;
  }

  .chat-history-item-content {
      overflow: hidden;
  }
  
  .chat-history-item-title {
      font-size: 11px;
  }
  
  .chat-history-item-meta {
      display: none; /* Hide date/patient in small pills */
  }

  .chat-history-delete {
    display: none;
  }

  .chat-header-right {
    display: none; /* Hide extra actions in header */
  }

  /* Welcome Screen - now mostly empty/clean */
  .chat-welcome {
    padding: var(--chat-spacing-md);
    align-items: center;
    justify-content: center;
  }
  
  /* Add a subtle placeholder if welcome is empty */
  .chat-welcome::after {
    content: 'Start a new chat...';
    color: var(--chat-text-muted);
    font-size: 14px;
    font-style: italic;
  }

  .chat-welcome-icon {
    display: none;
  }

  .chat-welcome-title {
    display: none;
  }

  .chat-messages {
    padding: var(--chat-spacing-sm);
  }

  .chat-message.assistant {
    max-width: 100%;
    padding: var(--chat-spacing-md);
  }

  .chat-composer {
    padding: var(--chat-spacing-sm);
  }
}

/* ============================================
   9. TOAST NOTIFICATIONS
   ============================================ */

.chat-toast {
  position: fixed;
  top: 20px;
  right: 20px;
  max-width: 300px;
  background: var(--chat-bg-white);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-md);
  box-shadow:
    0 10px 25px -5px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  padding: var(--chat-spacing-md);
  z-index: 10000;
  opacity: 0;
  transform: translateX(400px);
  transition:
    opacity 0.3s ease-out,
    transform 0.3s ease-out;
}

.chat-toast.show {
  opacity: 1;
  transform: translateX(0);
}

.chat-toast.hide {
  opacity: 0;
  transform: translateX(400px);
}

.chat-toast-content {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-sm);
}

.chat-toast-icon {
  color: var(--chat-patient-text);
  font-size: 16px;
  flex-shrink: 0;
}

.chat-toast-message {
  font-size: 14px;
  color: var(--chat-text);
  line-height: 1.4;
}

/* ============================================
   10. CHAT HISTORY BUTTON LAYOUT
   ============================================ */

.chat-history-toggle-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--chat-text-secondary);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-sm);
  cursor: pointer;
  transition: all 0.15s;
  margin-right: var(--chat-spacing-xs);
}

.chat-history-toggle-btn:hover {
  background: var(--chat-bg);
  color: var(--chat-text);
  border-color: var(--chat-text-secondary);
}

.chat-history-actions {
  display: flex;
  align-items: center;
  gap: var(--chat-spacing-xs);
  position: relative;
  z-index: 1001;
}

.chat-new-general-thread-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--chat-bg);
  color: var(--chat-text-secondary);
  border: 1px solid var(--chat-border);
  border-radius: var(--chat-radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}

.chat-new-general-thread-btn:hover {
  background: var(--chat-reasoning-bg);
  border-color: var(--chat-reasoning-border);
  color: var(--chat-reasoning-text);
}

/* ============================================
   11. THREAD GROUPING
   ============================================ */

.chat-history-patient-group {
  margin-bottom: var(--chat-spacing-lg);
}

.chat-history-patient-group:last-child {
  margin-bottom: 0;
}

.chat-history-patient-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--chat-text);
  padding: var(--chat-spacing-sm) var(--chat-spacing-sm);
  margin-bottom: var(--chat-spacing-xs);
  border-bottom: 1px solid var(--chat-border);
}

.chat-history-date-group {
  margin-bottom: var(--chat-spacing-md);
}

.chat-history-date-group:last-child {
  margin-bottom: 0;
}

.chat-history-date-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--chat-text-muted);
  padding: var(--chat-spacing-xs) var(--chat-spacing-sm);
  margin-bottom: var(--chat-spacing-xs);
}

/* ============================================
   12. GENERAL CHAT EXPLAINER
   ============================================ */

.chat-general-description {
  margin-bottom: var(--chat-spacing-lg);
  padding: var(--chat-spacing-md);
  background: var(--chat-bg);
  border-radius: var(--chat-radius-md);
}

.chat-general-description p {
  font-size: 14px;
  font-weight: 600;
  color: var(--chat-text);
  margin: 0 0 var(--chat-spacing-sm) 0;
}

.chat-general-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.chat-general-list li {
  font-size: 13px;
  color: var(--chat-text-secondary);
  padding: var(--chat-spacing-xs) 0;
  padding-left: var(--chat-spacing-md);
  position: relative;
}

.chat-general-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--chat-reasoning-text);
  font-weight: 700;
}

.chat-general-actions {
  display: flex;
  justify-content: center;
  margin-top: var(--chat-spacing-xl);
}

.chat-general-got-it-btn {
  padding: var(--chat-spacing-sm) var(--chat-spacing-lg);
  background: var(--chat-reasoning-text);
  color: white;
  border: none;
  border-radius: var(--chat-radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s;
}

.chat-general-got-it-btn:hover {
  background: var(--chat-reasoning-icon);
}