:root {
    --primary-color: #4a6baf;
    --secondary-color: #0e8c7f;
    --accent-color: #f76c6c;
    --light-bg: #f8f9fa;
    --dark-text: #2d3748;
    --light-text: #f7fafc;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --hover-color: #edf2f7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, Oxygen, Ubuntu, sans-serif;
}

body {
    background-color: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

header {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 0.8rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background-color: var(--light-text);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 18px;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

nav {
    display: flex;
    gap: 0.8rem;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--light-text);
    padding: 0.4rem 0.8rem;
    cursor: pointer;
    border-radius: 4px;
    font-size: 0.9rem;
    opacity: 0.9;
    transition: all 0.2s;
}

.nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    opacity: 1;
}

main {
    height: calc(100vh - 58px);
    display: flex;
    flex-direction: column;
}

.agent-tabs {
    display: flex;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0 1rem;
}

.agent-tab {
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    font-weight: 500;
    color: var(--dark-text);
    border-bottom: 3px solid transparent;
    position: relative;
    transition: all 0.2s;
}

.agent-tab.active {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.agent-tab:hover:not(.active) {
    border-color: var(--border-color);
    background-color: var(--hover-color);
}

.agent-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Research Agent Styles */
.research-container {
    display: flex;
    height: 100%;
}

.search-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.search-header {
    padding: 1.5rem;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
}

.search-form {
    display: flex;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

.search-input {
    flex-grow: 1;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 8px 0 0 8px;
    font-size: 1rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-btn {
    background-color: var(--primary-color);
    color: var(--light-text);
    border: none;
    padding: 0 1.2rem;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.search-btn:hover {
    background-color: #3c5996;
}

.results-container {
    flex-grow: 1;
    padding: 1.5rem;
    overflow-y: auto;
}

.results-wrapper {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.result-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.result-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.result-title {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.result-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    color: #718096;
    margin-bottom: 0.8rem;
}

.source-tag {
    background-color: var(--hover-color);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

.result-excerpt {
    font-size: 0.95rem;
    margin-bottom: 1rem;
    color: #4a5568;
}

.result-actions {
    display: flex;
    gap: 0.8rem;
}

.action-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background-color: var(--hover-color);
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background-color 0.2s;
}

.action-btn:hover {
    background-color: #e2e8f0;
}

.action-btn.primary {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.action-btn.primary:hover {
    background-color: #3c5996;
}

.collected-panel {
    width: 320px;
    background-color: var(--card-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.collected-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.collected-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.collected-subtitle {
    font-size: 0.85rem;
    color: #718096;
}

.collected-items {
    flex-grow: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.collected-item {
    padding: 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    margin-bottom: 0.5rem;
    transition: background-color 0.2s;
}

.collected-item:hover {
    background-color: var(--hover-color);
}

.collected-item-title {
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.collected-item-excerpt {
    font-size: 0.8rem;
    color: #718096;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.collected-actions {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.send-to-teach {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    background-color: var(--secondary-color);
    color: var(--light-text);
    border: none;
    padding: 0.7rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}

.send-to-teach:hover {
    background-color: #097268;
}

/* Teaching Agent Styles */
.teaching-container {
    display: flex;
    height: 100%;
}

.chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    padding: 1.2rem 1.5rem;
    background-color: var(--secondary-color);
    color: var(--light-text);
}

.topic-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.topic-meta {
    display: flex;
    gap: 1.2rem;
    font-size: 0.85rem;
    opacity: 0.9;
}

.chat-messages {
    flex-grow: 1;
    padding: 1.5rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.message {
    max-width: 80%;
    display: flex;
}

.message.agent {
    align-self: flex-start;
}

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    margin-right: 12px;
    margin-top: 4px;
    flex-shrink: 0;
}

.user .message-avatar {
    margin-right: 0;
    margin-left: 12px;
}

.agent .message-avatar {
    background-color: var(--secondary-color);
    color: var(--light-text);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.user .message-avatar {
    background-color: var(--primary-color);
    color: var(--light-text);
    display: flex;
    align-items: center;
    justify-content: center;
}

.message-content {
    background-color: var(--card-bg);
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.agent .message-content {
    border-top-left-radius: 0;
}

.user .message-content {
    border-top-right-radius: 0;
    background-color: var(--primary-color);
    color: var(--light-text);
}

.message-sender {
    font-weight: 600;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.message-text p {
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

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

.message-text ul, .message-text ol {
    margin-left: 1.5rem;
    margin-bottom: 0.8rem;
}

.code-block {
    background-color: #f1f5f9;
    padding: 0.8rem;
    border-radius: 4px;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    margin: 0.8rem 0;
}

.user .code-block {
    background-color: rgba(255, 255, 255, 0.1);
}

.chat-input-container {
    padding: 1rem 1.5rem;
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
}

.chat-form {
    display: flex;
    align-items: flex-end;
    gap: 0.8rem;
    max-width: 900px;
    margin: 0 auto;
}

.chat-input {
    flex-grow: 1;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.95rem;
    resize: none;
    min-height: 2.5rem;
    max-height: 8rem;
    overflow-y: auto;
}

.chat-input:focus {
    outline: none;
    border-color: var(--secondary-color);
}

.send-btn {
    background-color: var(--secondary-color);
    color: var(--light-text);
    border: none;
    padding: 0.8rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.send-btn:hover {
    background-color: #097268;
}

.options-panel {
    width: 320px;
    background-color: var(--card-bg);
    border-left: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.options-section {
    padding: 1.2rem;
    border-bottom: 1px solid var(--border-color);
}

.options-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.resources-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.resource-item {
    display: flex;
    gap: 0.8rem;
    padding: 0.8rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.resource-item:hover {
    background-color: var(--hover-color);
}

.resource-icon {
    font-size: 1.2rem;
    color: var(--secondary-color);
}

.resource-details {
    flex-grow: 1;
}

.resource-name {
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 0.2rem;
}

.resource-meta {
    font-size: 0.8rem;
    color: #718096;
}

.preferences-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.preference-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preference-label {
    font-size: 0.9rem;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #cbd5e0;
    transition: .3s;
    border-radius: 22px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--secondary-color);
}

input:checked + .toggle-slider:before {
    transform: translateX(22px);
}

.select-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.level-select {
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Hide inactive agent content */
.agent-content {
    display: none;
}

.agent-content.active {
    display: flex;
}
/* Additional CSS styles for Brave Search integration */

/* Search configuration section */
.search-config {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background-color: #f8fafc;
    border-radius: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    border: 1px solid #e2e8f0;
  }
  
  .config-item {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 250px;
    gap: 0.5rem;
  }
  
  .config-label {
    font-size: 0.875rem;
    color: #4a5568;
    white-space: nowrap;
  }
  
  .config-input {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.25rem;
    font-size: 0.875rem;
  }
  
  .save-key-btn {
    padding: 0.5rem 0.75rem;
    background-color: #4a5568;
    color: white;
    border: none;
    border-radius: 0.25rem;
    cursor: pointer;
    font-size: 0.75rem;
    transition: background-color 0.2s;
  }
  
  .save-key-btn:hover {
    background-color: #2d3748;
  }
  
  .count-select {
    padding: 0.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 0.25rem;
    font-size: 0.875rem;
    background-color: white;
  }
  
  /* Search results */
  .loading-results {
    text-align: center;
    padding: 2rem;
    color: #4a5568;
  }
  
  .loading-dots span {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #4a5568;
    margin: 0 2px;
    animation: loadingDots 1.4s infinite ease-in-out both;
  }
  
  .loading-dots span:nth-child(1) {
    animation-delay: 0s;
  }
  
  .loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
  }
  
  .loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
  }
  
  @keyframes loadingDots {
    0%, 80%, 100% {
      transform: scale(0);
      opacity: 0.3;
    }
    40% {
      transform: scale(1);
      opacity: 1;
    }
  }
  
  .search-error {
    padding: 1rem;
    background-color: #fed7d7;
    border: 1px solid #f56565;
    border-radius: 0.5rem;
    color: #c53030;
    margin: 1rem 0;
  }
  
  .results-meta {
    padding: 0.75rem 1rem;
    background-color: #f8fafc;
    border-bottom: 1px solid #e2e8f0;
    font-size: 0.875rem;
    color: #4a5568;
  }
  
  .search-result {
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .search-result:hover {
    background-color: #f8fafc;
  }
  
  .result-content {
    flex: 1;
  }
  
  .result-title {
    margin: 0 0 0.25rem 0;
    font-size: 1.125rem;
  }
  
  .result-title a {
    color: #2b6cb0;
    text-decoration: none;
  }
  
  .result-title a:hover {
    text-decoration: underline;
  }
  
  .result-url {
    display: block;
    font-size: 0.75rem;
    color: #68d391;
    margin-bottom: 0.5rem;
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
  }
  
  .result-description {
    font-size: 0.875rem;
    color: #4a5568;
    margin: 0;
    line-height: 1.5;
  }
  
  .add-to-research {
    white-space: nowrap;
    background-color: #4299e1;
    color: white;
    border: none;
    border-radius: 0.25rem;
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.25rem;
  }
  
  .add-to-research:hover {
    background-color: #3182ce;
  }
  
  .add-to-research span {
    font-size: 1rem;
    font-weight: bold;
  }
  
  /* Collected items */
  .collected-item {
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
  }
  
  .collected-item-content {
    flex: 1;
  }
  
  .collected-item-title {
    margin: 0 0 0.25rem 0;
    font-size: 0.875rem;
    color: #2d3748;
  }
  
  .collected-item-url {
    font-size: 0.75rem;
    color: #68d391;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .collected-item-excerpt {
    font-size: 0.75rem;
    color: #718096;
    line-height: 1.4;
    max-height: 4.2em; /* Show about 3 lines of text */
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
  }
  
  .remove-item {
    white-space: nowrap;
    background-color: #f56565;
    color: white;
    border: none;
    border-radius: 0.25rem;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    height: fit-content;
  }
  
  .remove-item:hover {
    background-color: #e53e3e;
  }
  
  .remove-item span {
    font-size: 1rem;
    font-weight: bold;
  }
  .save-key-btn.saved {
    background-color: #48bb78;
    transition: background-color 0.3s;
  }