/* RegAssist AI — Professional Chat Interface */

:root {
    --navy: #1a365d;
    --navy-light: #2d4a7a;
    --navy-dark: #0f2440;
    --accent: #4299e1;
    --accent-light: #63b3ed;
    --bg: #f7fafc;
    --card: #ffffff;
    --text: #2d3748;
    --text-light: #718096;
    --border: #e2e8f0;
    --success: #48bb78;
    --warning: #ed8936;
    --danger: #fc8181;
    --pv-color: #e53e3e;
    --ra-color: #3182ce;
    --research-color: #38a169;
    --sidebar-width: 280px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    height: 100vh;
    overflow: hidden;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--navy);
    color: white;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--navy-light);
}

.sidebar-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.sidebar-header .subtitle {
    font-size: 0.75rem;
    color: var(--accent-light);
    margin-top: 4px;
}

.new-chat-btn {
    margin: 16px 20px;
    padding: 10px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.new-chat-btn:hover {
    background: var(--accent-light);
}

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

.history-item {
    position: relative;
    padding: 10px 30px 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8125rem;
    color: #cbd5e0;
    transition: background 0.15s;
    margin-bottom: 2px;
    overflow: hidden;
}

.history-item .history-text {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item:hover {
    background: var(--navy-light);
}

.history-item .timestamp {
    font-size: 0.6875rem;
    color: #718096;
    display: block;
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-delete-btn {
    position: absolute;
    top: 8px;
    right: 6px;
    width: 20px;
    height: 20px;
    border: none;
    background: transparent;
    color: #718096;
    font-size: 1rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.15s, color 0.15s, background 0.15s;
}

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

.history-delete-btn:hover {
    color: #fc8181;
    background: rgba(252, 129, 129, 0.15);
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--navy-light);
    font-size: 0.75rem;
    color: #718096;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    margin-right: 6px;
}

.status-dot.offline {
    background: var(--danger);
}

/* Main Chat Area */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.chat-header {
    padding: 12px 24px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-header h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--navy);
}

.connection-status {
    font-size: 0.75rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    max-width: 80%;
    animation: fadeInUp 0.3s ease-out;
}

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

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

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

.message-bubble {
    padding: 12px 16px;
    border-radius: 12px;
    line-height: 1.6;
    font-size: 0.9375rem;
}

.message.user .message-bubble {
    background: var(--navy);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.assistant .message-bubble {
    background: var(--card);
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.agent-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.agent-badge.pharmacovigilance {
    background: #fff5f5;
    color: var(--pv-color);
    border: 1px solid #feb2b2;
}

.agent-badge.regulatory-affairs {
    background: #ebf8ff;
    color: var(--ra-color);
    border: 1px solid #90cdf4;
}

.agent-badge.research {
    background: #f0fff4;
    color: var(--research-color);
    border: 1px solid #9ae6b4;
}

.agent-badge.submission-support {
    background: #fffbeb;
    color: #d69e2e;
    border: 1px solid #f6e05e;
}

.agent-badge.idmp-xevmpd {
    background: #fef3f2;
    color: #c53030;
    border: 1px solid #fc8181;
}

.agent-badge.labeling {
    background: #f0f5ff;
    color: #4c51bf;
    border: 1px solid #a3bffa;
}

.agent-badge.synthesizer {
    background: #f7fafc;
    color: #4a5568;
    border: 1px solid #cbd5e0;
}

.agent-badge.router {
    background: #faf5ff;
    color: #805ad5;
    border: 1px solid #d6bcfa;
}

.message-meta {
    display: flex;
    gap: 12px;
    margin-top: 8px;
    font-size: 0.75rem;
    color: var(--text-light);
}

.message-meta .sources {
    color: var(--accent);
}

.message-content h2,
.message-content h3 {
    font-size: 1rem;
    margin: 12px 0 6px;
    color: var(--navy);
}

.message-content ul, .message-content ol {
    padding-left: 20px;
    margin: 6px 0;
}

.message-content li {
    margin-bottom: 4px;
}

.message-content p {
    margin-bottom: 8px;
}

.message-content strong {
    color: var(--navy);
}

.message-content h1 {
    font-size: 1.125rem;
    margin: 14px 0 8px;
    color: var(--navy);
}

.message-content h4 {
    font-size: 0.9375rem;
    margin: 10px 0 4px;
    color: var(--navy);
}

.message-content pre {
    background: #1a202c;
    color: #e2e8f0;
    padding: 12px 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 8px 0;
    font-size: 0.8125rem;
    line-height: 1.5;
}

.message-content code {
    background: #edf2f7;
    color: #e53e3e;
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 0.85em;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

.message-content pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    border-radius: 0;
    font-size: inherit;
}

.message-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 0.875rem;
}

.message-content th,
.message-content td {
    border: 1px solid var(--border);
    padding: 8px 12px;
    text-align: left;
}

.message-content th {
    background: #f7fafc;
    font-weight: 600;
    color: var(--navy);
}

.message-content tr:nth-child(even) td {
    background: #fafbfc;
}

.message-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 16px 0;
}

.message-content a {
    color: var(--accent);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

.message-content ul ul,
.message-content ol ul,
.message-content ul ol,
.message-content ol ol {
    margin: 2px 0;
}

/* Welcome Screen */
.welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.welcome h2 {
    font-size: 1.5rem;
    color: var(--navy);
    margin-bottom: 8px;
}

.welcome p {
    font-size: 0.9375rem;
    max-width: 500px;
    margin-bottom: 24px;
}

.example-queries {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    max-width: 700px;
}

.example-query {
    padding: 8px 14px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all 0.15s;
    color: var(--text);
}

.example-query:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: #ebf8ff;
}

/* Input Area */
.chat-input-area {
    padding: 16px 24px;
    background: var(--card);
    border-top: 1px solid var(--border);
}

.input-wrapper {
    display: flex;
    gap: 8px;
    max-width: 900px;
    margin: 0 auto;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 0.9375rem;
    font-family: inherit;
    resize: none;
    outline: none;
    transition: border-color 0.2s;
    min-height: 48px;
    max-height: 120px;
}

.chat-input:focus {
    border-color: var(--accent);
}

.send-btn {
    padding: 12px 20px;
    background: var(--navy);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

.send-btn:hover {
    background: var(--navy-light);
}

.send-btn:disabled {
    background: #a0aec0;
    cursor: not-allowed;
}

/* Loading indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    align-items: center;
}

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

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

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

.typing-label {
    font-size: 0.8125rem;
    color: var(--text-light);
    margin-left: 8px;
}

/* Agent Flow Visualization */
.agent-flow {
    margin-bottom: 8px;
    padding: 8px 12px;
    background: #f7fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow-x: auto;
}

.agent-flow-svg {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Conversation Export Button */
.export-btn {
    padding: 4px 10px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.15s;
}

.export-btn:hover {
    background: var(--bg);
    border-color: var(--accent);
    color: var(--accent);
}

/* Glossary Tooltip */
.glossary-term {
    border-bottom: 1px dotted var(--accent);
    cursor: help;
    position: relative;
}

.glossary-tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 10px;
    background: var(--navy);
    color: white;
    font-size: 0.75rem;
    border-radius: 6px;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s;
    z-index: 100;
    margin-bottom: 4px;
}

.glossary-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 5px solid transparent;
    border-top-color: var(--navy);
}

.glossary-term:hover .glossary-tooltip {
    opacity: 1;
}

/* Scrollbar */
.chat-messages::-webkit-scrollbar,
.history-list::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track,
.history-list::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #cbd5e0;
    border-radius: 3px;
}

.history-list::-webkit-scrollbar-thumb {
    background: var(--navy-light);
    border-radius: 3px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        z-index: 100;
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .message {
        max-width: 95%;
    }
}