/**
 * AI Learning Companion - Glassmorphic Chat Interface
 * Focus AI - BotCamp Training Notebook
 */

/* ============================================
   VARIABLES
   ============================================ */
:root {
  --companion-primary: #6366f1;
  --companion-secondary: #8b5cf6;
  --companion-glass-bg: rgba(255, 255, 255, 0.85);
  --companion-glass-border: rgba(255, 255, 255, 0.5);
  --companion-shadow: 0 8px 32px rgba(99, 102, 241, 0.2);
  --companion-blur: 12px;
}

/* ============================================
   FLOATING BUTTON
   ============================================ */
.ai-companion-btn {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid var(--companion-glass-border);
  background: var(--companion-glass-bg);
  backdrop-filter: blur(var(--companion-blur));
  -webkit-backdrop-filter: blur(var(--companion-blur));
  box-shadow: var(--companion-shadow);
  cursor: pointer;
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.ai-companion-btn:hover {
  transform: scale(1.08);
  box-shadow: 0 12px 40px rgba(99, 102, 241, 0.35);
  border-color: var(--companion-primary);
}

.ai-companion-btn:active {
  transform: scale(0.95);
}

.ai-companion-btn .btn-icon {
  width: 28px;
  height: 28px;
  transition: transform 0.3s ease;
}

.ai-companion-btn:hover .btn-icon {
  transform: rotate(15deg);
}

.ai-companion-btn.chat-open .btn-icon-chat {
  display: none;
}

.ai-companion-btn.chat-open .btn-icon-close {
  display: block;
}

.ai-companion-btn .btn-icon-close {
  display: none;
}

/* Pulse animation when idle */
.ai-companion-btn::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--companion-primary), var(--companion-secondary));
  opacity: 0;
  animation: companion-pulse 3s ease-in-out infinite;
  z-index: -1;
}

@keyframes companion-pulse {
  0%, 100% { opacity: 0; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(1.15); }
}

/* ============================================
   FLOATING LABEL
   ============================================ */
.ai-companion-label {
  position: fixed;
  bottom: 32px;
  left: 92px;
  padding: 10px 18px;
  border-radius: 20px;
  border: 1px solid var(--companion-glass-border);
  background: var(--companion-glass-bg);
  backdrop-filter: blur(var(--companion-blur));
  -webkit-backdrop-filter: blur(var(--companion-blur));
  box-shadow: var(--companion-shadow);
  z-index: 9997;
  pointer-events: none;
  animation: label-fade-in 0.5s ease 0.3s both;
}

.ai-companion-label span {
  background: linear-gradient(135deg, var(--companion-primary) 0%, var(--companion-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 600;
  font-size: 0.85rem;
  white-space: nowrap;
}

@keyframes label-fade-in {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Hide label when chat is open */
.ai-companion-label.hidden {
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.2s ease;
}

/* ============================================
   CHAT CONTAINER
   ============================================ */
.ai-companion-chat {
  position: fixed;
  bottom: 92px;
  left: 24px;
  width: 380px;
  max-width: calc(100vw - 48px);
  height: 620px;
  max-height: calc(100vh - 120px);
  border-radius: 20px;
  border: 1px solid var(--companion-glass-border);
  background: var(--companion-glass-bg);
  backdrop-filter: blur(var(--companion-blur));
  -webkit-backdrop-filter: blur(var(--companion-blur));
  box-shadow: var(--companion-shadow);
  z-index: 9997;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.ai-companion-chat.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

/* ============================================
   CHAT HEADER
   ============================================ */
.companion-header {
  padding: 16px 20px;
  background: linear-gradient(135deg, var(--companion-primary) 0%, var(--companion-secondary) 100%);
  color: white;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.companion-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.companion-info {
  flex: 1;
}

.companion-name {
  font-weight: 600;
  font-size: 1rem;
  margin: 0;
  color: white;
}

.companion-status {
  font-size: 0.8rem;
  opacity: 0.9;
  display: flex;
  align-items: center;
  gap: 6px;
}

.companion-status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #34d399;
  animation: status-blink 2s ease-in-out infinite;
}

@keyframes status-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.companion-close-btn {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.companion-close-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.companion-logout-btn {
  background: rgba(251, 191, 191, 0.25);
  border: 1px solid rgba(248, 160, 160, 0.4);
  padding: 6px 12px;
  border-radius: 16px;
  color: rgba(255, 255, 255, 0.95);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all 0.2s ease;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: inherit;
}

.companion-logout-btn:hover {
  background: rgba(248, 113, 113, 0.5);
  border-color: rgba(248, 113, 113, 0.6);
}

/* ============================================
   MESSAGES AREA
   ============================================ */
.companion-messages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-behavior: smooth;
}

.companion-messages::-webkit-scrollbar {
  width: 6px;
}

.companion-messages::-webkit-scrollbar-track {
  background: transparent;
}

.companion-messages::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.3);
  border-radius: 3px;
}

.companion-messages::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.5);
}

/* Message Bubbles */
.companion-message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.5;
  animation: message-appear 0.3s ease;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

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

.companion-message.assistant {
  align-self: flex-start;
  background: white;
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-bottom-right-radius: 6px;
  color: var(--text-color, #1f2937);
}

.companion-message.user {
  align-self: flex-end;
  background: linear-gradient(135deg, var(--companion-primary) 0%, var(--companion-secondary) 100%);
  color: white;
  border-bottom-left-radius: 6px;
}

/* Section Links */
.companion-message .section-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  margin: 8px 4px 4px 0;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 20px;
  color: var(--companion-primary);
  font-size: 0.85rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.companion-message .section-link:hover {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.2);
}

.companion-message .section-link .link-icon {
  font-size: 0.75rem;
}

/* ============================================
   MARKDOWN STYLING
   ============================================ */

/* Reset default margins inside messages */
.companion-message.assistant > *:first-child {
  margin-top: 0;
}

.companion-message.assistant > *:last-child {
  margin-bottom: 0;
}

/* Paragraphs */
.companion-message .md-p {
  margin: 0 0 8px 0;
  line-height: 1.6;
}

.companion-message .md-p:last-child {
  margin-bottom: 0;
}

/* Headers */
.companion-message .md-h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--companion-primary);
  margin: 12px 0 6px 0;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(99, 102, 241, 0.15);
}

.companion-message .md-h3:first-child {
  margin-top: 0;
}

.companion-message .md-h4 {
  font-size: 0.9rem;
  font-weight: 600;
  color: #4b5563;
  margin: 10px 0 4px 0;
}

.companion-message .md-h4:first-child {
  margin-top: 0;
}

/* Lists */
.companion-message .md-ul,
.companion-message .md-ol {
  margin: 6px 0;
  padding-right: 18px;
  padding-left: 0;
}

.companion-message .md-ul li,
.companion-message .md-ol li {
  margin: 4px 0;
  line-height: 1.5;
  position: relative;
}

.companion-message .md-ul {
  list-style: none;
}

.companion-message .md-ul li::before {
  content: '';
  position: absolute;
  right: -14px;
  top: 8px;
  width: 5px;
  height: 5px;
  background: var(--companion-primary);
  border-radius: 50%;
  opacity: 0.7;
}

.companion-message .md-ol {
  list-style: none;
  counter-reset: md-counter;
}

.companion-message .md-ol li {
  counter-increment: md-counter;
}

.companion-message .md-ol li::before {
  content: counter(md-counter);
  position: absolute;
  right: -18px;
  top: 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--companion-primary);
  opacity: 0.8;
}

/* Inline code */
.companion-message .md-code {
  background: rgba(99, 102, 241, 0.08);
  color: #5b21b6;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
  font-size: 0.8rem;
  direction: ltr;
  unicode-bidi: embed;
  word-break: break-all;
}

/* Bold and italic */
.companion-message strong {
  font-weight: 600;
  color: #374151;
}

.companion-message em {
  font-style: italic;
  color: #6b7280;
}

/* Horizontal rule */
.companion-message .md-hr {
  border: none;
  border-top: 1px solid rgba(99, 102, 241, 0.15);
  margin: 12px 0;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 16px;
  background: white;
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: 16px;
  border-bottom-right-radius: 6px;
  align-self: flex-start;
  max-width: 60px;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--companion-primary);
  animation: typing-bounce 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }
.typing-indicator span:nth-child(3) { animation-delay: 0s; }

@keyframes typing-bounce {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.4;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Welcome Message */
.companion-welcome {
  text-align: center;
  padding: 20px;
  color: var(--light-text, #64748b);
}

.companion-welcome h4 {
  color: var(--companion-primary);
  margin-bottom: 8px;
  font-size: 1rem;
}

.companion-welcome p {
  font-size: 0.85rem;
  margin: 0;
}

/* Quick Actions */
.companion-quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  background: rgba(255, 255, 255, 0.5);
}

.quick-action-btn {
  padding: 8px 14px;
  background: white;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--companion-primary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.quick-action-btn:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--companion-primary);
}

/* ============================================
   INPUT AREA
   ============================================ */
.companion-input-area {
  padding: 12px 16px;
  border-top: 1px solid rgba(99, 102, 241, 0.1);
  display: flex;
  gap: 10px;
  align-items: flex-end;
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.7);
}

.companion-input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 24px;
  font-size: 0.9rem;
  font-family: inherit;
  resize: none;
  max-height: 100px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  background: white;
}

.companion-input:focus {
  border-color: var(--companion-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.companion-input::placeholder {
  color: #9ca3af;
}

.companion-send-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--companion-primary) 0%, var(--companion-secondary) 100%);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.companion-send-btn:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

.companion-send-btn svg {
  width: 20px;
  height: 20px;
  transform: rotate(180deg);
}

/* ============================================
   API KEY SETUP
   ============================================ */
.companion-api-setup {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  justify-content: flex-start;
  overflow-y: auto;
}

.companion-api-setup h4 {
  text-align: center;
  color: var(--companion-primary);
  margin: 0;
}

.companion-api-setup p {
  text-align: center;
  color: var(--light-text, #64748b);
  font-size: 0.85rem;
  margin: 0;
}

.provider-select-group,
.model-select-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.provider-select-group label,
.model-select-group label {
  font-size: 0.8rem;
  color: var(--light-text, #64748b);
  white-space: nowrap;
  min-width: 55px;
}

.provider-select,
.model-select {
  flex: 1;
  padding: 11px 14px;
  border: 1px solid var(--companion-glass-border);
  border-radius: 12px;
  font-size: 0.85rem;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-color, #1f2937);
  outline: none;
  cursor: pointer;
  transition: all 0.2s ease;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236366f1' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 12px center;
  padding-left: 32px;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.06);
}

.provider-select:focus,
.model-select:focus {
  border-color: var(--companion-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  background: rgba(255, 255, 255, 0.9);
}

.provider-select:hover,
.model-select:hover {
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(255, 255, 255, 0.85);
}

.provider-select option,
.model-select option {
  background: white;
  color: var(--text-color, #1f2937);
  padding: 8px;
}

.api-key-input {
  padding: 12px 16px;
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 12px;
  font-size: 0.9rem;
  font-family: monospace;
  outline: none;
  transition: border-color 0.2s ease;
}

.api-key-input:focus {
  border-color: var(--companion-primary);
}

.api-key-submit {
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--companion-primary) 0%, var(--companion-secondary) 100%);
  border: none;
  border-radius: 12px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.api-key-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.api-disclaimer {
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.25);
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 4px;
}

.api-disclaimer .disclaimer-title {
  font-size: 0.8rem !important;
  font-weight: 600;
  color: #b45309 !important;
  text-align: right !important;
  margin-bottom: 8px !important;
}

.api-disclaimer ul {
  margin: 0;
  padding: 0 14px 0 0;
  list-style: none;
}

.api-disclaimer li {
  font-size: 0.72rem;
  color: #78716c;
  line-height: 1.5;
  margin-bottom: 4px;
  position: relative;
  padding-right: 12px;
}

.api-disclaimer li::before {
  content: '•';
  position: absolute;
  right: 0;
  color: #d97706;
}

.api-disclaimer li:last-child {
  margin-bottom: 0;
}

.api-disclaimer a {
  color: var(--companion-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.api-disclaimer a:hover {
  color: var(--companion-secondary);
}

.api-terms-checkbox {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(251, 191, 36, 0.2);
  cursor: pointer;
}

.api-terms-checkbox input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  accent-color: var(--companion-primary);
  cursor: pointer;
  flex-shrink: 0;
}

.api-terms-checkbox span {
  font-size: 0.75rem;
  color: #57534e;
  line-height: 1.4;
}

.api-key-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

/* ============================================
   SMOOTH SCROLL HIGHLIGHT
   ============================================ */
.scroll-highlight {
  animation: highlight-flash 2s ease;
}

@keyframes highlight-flash {
  0% {
    background-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
  }
  100% {
    background-color: transparent;
    box-shadow: none;
  }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
  .ai-companion-btn {
    bottom: 16px;
    left: 16px;
    width: 50px;
    height: 50px;
  }

  .ai-companion-chat {
    bottom: 78px;
    left: 12px;
    right: 12px;
    width: auto;
    max-width: none;
    height: calc(100vh - 120px);
    max-height: none;
    border-radius: 16px;
  }

  .companion-header {
    padding: 14px 16px;
  }

  .companion-avatar {
    width: 36px;
    height: 36px;
    font-size: 18px;
  }

  .companion-name {
    font-size: 0.95rem;
  }

  .companion-message {
    max-width: 90%;
    font-size: 0.85rem;
  }

  .companion-input {
    font-size: 16px; /* Prevents iOS zoom */
  }

  .ai-companion-label {
    display: none;
  }
}

/* ============================================
   DARK MODE SUPPORT (optional)
   ============================================ */
@media (prefers-color-scheme: dark) {
  .ai-companion-chat {
    --companion-glass-bg: rgba(30, 30, 40, 0.9);
    --companion-glass-border: rgba(255, 255, 255, 0.1);
  }

  .companion-message.assistant {
    background: rgba(50, 50, 60, 0.9);
    border-color: rgba(99, 102, 241, 0.3);
    color: #e5e5e5;
  }

  .companion-input {
    background: rgba(50, 50, 60, 0.9);
    border-color: rgba(99, 102, 241, 0.3);
    color: #e5e5e5;
  }

  .typing-indicator {
    background: rgba(50, 50, 60, 0.9);
    border-color: rgba(99, 102, 241, 0.3);
  }

  .quick-action-btn {
    background: rgba(50, 50, 60, 0.9);
    border-color: rgba(99, 102, 241, 0.3);
  }

  /* Markdown dark mode */
  .companion-message .md-code {
    background: rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
  }

  .companion-message strong {
    color: #e5e5e5;
  }

  .companion-message em {
    color: #9ca3af;
  }

  .companion-message .md-h4 {
    color: #d1d5db;
  }

  .provider-select,
  .model-select {
    background: rgba(50, 50, 60, 0.8);
    border-color: rgba(99, 102, 241, 0.3);
    color: #e5e5e5;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a5b4fc' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  }

  .provider-select:focus,
  .model-select:focus {
    background: rgba(60, 60, 70, 0.9);
  }

  .provider-select:hover,
  .model-select:hover {
    background: rgba(55, 55, 65, 0.85);
  }

  .provider-select option,
  .model-select option {
    background: #2a2a35;
    color: #e5e5e5;
  }

  .api-key-input {
    background: rgba(50, 50, 60, 0.8);
    border-color: rgba(99, 102, 241, 0.3);
    color: #e5e5e5;
  }
}