/**
 * Learning Library Docent Widget Styles
 */

/* Widget Container */
#docent-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 9999;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Floating Button */
#docent-button {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  color: white;
}

#docent-button:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(102, 126, 234, 0.5);
}

#docent-button.docent-active {
  transform: scale(0.95);
}

/* Chat Window */
#docent-chat {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 360px;
  max-width: calc(100vw - 40px);
  height: 480px;
  max-height: calc(100vh - 120px);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

#docent-chat.docent-hidden {
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  pointer-events: none;
}

/* Header */
.docent-header {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 16px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.docent-close {
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.docent-close:hover {
  opacity: 1;
}

/* Messages Container */
.docent-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #f8f9fa;
}

/* Individual Messages */
.docent-message {
  padding: 12px 16px;
  border-radius: 16px;
  max-width: 85%;
  line-height: 1.5;
  font-size: 14px;
}

.docent-user {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.docent-docent {
  background: white;
  color: #333;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Recommendation Cards */
.docent-recommendations {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 8px 0;
}

.docent-rec-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  background: white;
  border-radius: 8px;
  text-decoration: none;
  color: inherit;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.2s, transform 0.2s;
}

.docent-rec-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  transform: translateX(2px);
}

.docent-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 3px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.video-badge {
  background: #e3f2fd;
  color: #1976d2;
}

.paper-badge {
  background: #f3e5f5;
  color: #7b1fa2;
}

.docent-rec-title {
  font-size: 13px;
  color: #333;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Input Area */
.docent-input-area {
  display: flex;
  padding: 12px;
  gap: 8px;
  background: white;
  border-top: 1px solid #eee;
}

.docent-input-area input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid #ddd;
  border-radius: 20px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.docent-input-area input:focus {
  border-color: #667eea;
}

.docent-send {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: transform 0.2s;
}

.docent-send:hover {
  transform: scale(1.05);
}

.docent-send:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* Mobile Responsiveness */
@media (max-width: 480px) {
  #docent-widget {
    bottom: 10px;
    right: 10px;
  }

  #docent-button {
    width: 48px;
    height: 48px;
  }

  #docent-chat {
    bottom: 60px;
    width: calc(100vw - 20px);
    height: calc(100vh - 80px);
    border-radius: 12px;
  }

  .docent-message {
    max-width: 90%;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  #docent-chat {
    background: #1a1a1a;
  }

  .docent-messages {
    background: #111;
  }

  .docent-docent {
    background: #2a2a2a;
    color: #eee;
  }

  .docent-rec-card {
    background: #2a2a2a;
    color: #eee;
  }

  .docent-rec-title {
    color: #eee;
  }

  .docent-input-area {
    background: #1a1a1a;
    border-top-color: #333;
  }

  .docent-input-area input {
    background: #2a2a2a;
    border-color: #444;
    color: #eee;
  }

  .docent-input-area input:focus {
    border-color: #667eea;
  }
}