/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #0a0e14 0%, #000000 100%);
  color: #e6eef6;
  height: 100vh;
  overflow: hidden;
}

.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
  width: 320px;
  background: rgba(255, 255, 255, 0.03);
  border-left: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sidebar-header h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
}

.btn-icon {
  background: transparent;
  border: none;
  color: #8aa0aa;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #3ee8c8;
}

.sidebar-search {
  padding: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar-search input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #e6eef6;
  font-size: 0.9rem;
  transition: all 0.2s;
}

.sidebar-search input:focus {
  outline: none;
  border-color: #3ee8c8;
  background: rgba(255, 255, 255, 0.08);
}

.conversations-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}

.conversation-item {
  padding: 12px 16px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 4px;
  border: 1px solid transparent;
}

.conversation-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(62, 232, 200, 0.2);
}

.conversation-item.active {
  background: rgba(62, 232, 200, 0.1);
  border-color: rgba(62, 232, 200, 0.3);
}

.conversation-item-title {
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.conversation-item-preview {
  font-size: 0.85rem;
  color: #8aa0aa;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.conversation-item-meta {
  font-size: 0.75rem;
  color: #6a7a85;
  margin-top: 4px;
  display: flex;
  justify-content: space-between;
}

/* ============================================
   MAIN CHAT AREA
   ============================================ */
.main-chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.02);
  overflow: hidden;
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 1.2rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 8px;
}

.empty-state-subtext {
  font-size: 0.9rem;
  color: #8aa0aa;
  max-width: 400px;
}

.chat-header {
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-header-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #3ee8c8, #60a5fa);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
}

.chat-header-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #ffffff;
}

.chat-header-subtitle {
  font-size: 0.85rem;
  color: #8aa0aa;
}

.messages-area {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.messages-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
}

.message {
  display: flex;
  gap: 12px;
  animation: fadeIn 0.3s ease-in;
}

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

.message.user {
  flex-direction: row-reverse;
}

.message-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.message.user .message-avatar {
  background: linear-gradient(135deg, #60a5fa, #3ee8c8);
}

.message.assistant .message-avatar {
  background: linear-gradient(135deg, #3ee8c8, #60a5fa);
}

.message-content {
  flex: 1;
  max-width: 70%;
}

.message.user .message-content {
  text-align: right;
}

.message.assistant .message-content {
  text-align: left;
}

.message-bubble {
  padding: 12px 16px;
  border-radius: 12px;
  word-wrap: break-word;
  line-height: 1.5;
}

.message.user .message-bubble {
  background: rgba(62, 232, 200, 0.15);
  border: 1px solid rgba(62, 232, 200, 0.3);
  color: #ffffff;
}

.message.assistant .message-bubble {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #e6eef6;
}

.message-time {
  font-size: 0.75rem;
  color: #6a7a85;
  margin-top: 4px;
  padding: 0 4px;
}

.message-data {
  margin-top: 8px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
  max-height: 300px;
  overflow-y: auto;
}

.input-area {
  padding: 16px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.03);
}

.input-container {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

#messageInput {
  flex: 1;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  color: #e6eef6;
  font-size: 0.95rem;
  font-family: inherit;
  resize: none;
  min-height: 44px;
  max-height: 120px;
  transition: all 0.2s;
}

#messageInput:focus {
  outline: none;
  border-color: #3ee8c8;
  background: rgba(255, 255, 255, 0.08);
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn-primary {
  background: linear-gradient(135deg, #3ee8c8, #60a5fa);
  color: #0a0e14;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(62, 232, 200, 0.3);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: #e6eef6;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
}

.suggestions-container {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.suggestion-chip {
  padding: 6px 12px;
  background: rgba(62, 232, 200, 0.1);
  border: 1px solid rgba(62, 232, 200, 0.3);
  border-radius: 16px;
  font-size: 0.85rem;
  color: #3ee8c8;
  cursor: pointer;
  transition: all 0.2s;
}

.suggestion-chip:hover {
  background: rgba(62, 232, 200, 0.2);
  transform: translateY(-2px);
}

/* ============================================
   DIALOGS
   ============================================ */
.dialog-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.dialog {
  background: rgba(20, 25, 35, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.dialog-header {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dialog-header h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
}

.dialog-content {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: #ffffff;
  margin-bottom: 8px;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  color: #e6eef6;
  font-size: 0.9rem;
  font-family: inherit;
  transition: all 0.2s;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: #3ee8c8;
  background: rgba(255, 255, 255, 0.08);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-help {
  font-size: 0.8rem;
  color: #8aa0aa;
  margin-top: 6px;
}

.form-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  margin-top: 24px;
}

/* ============================================
   LOADING & STATUS
   ============================================ */
.loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(62, 232, 200, 0.3);
  border-top-color: #3ee8c8;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
}

.typing-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3ee8c8;
  animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typing {
  0%,
  60%,
  100% {
    transform: translateY(0);
    opacity: 0.7;
  }
  30% {
    transform: translateY(-10px);
    opacity: 1;
  }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.02);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    position: absolute;
    z-index: 100;
    height: 100%;
  }

  .main-chat {
    width: 100%;
  }

  .message-content {
    max-width: 85%;
  }
}