/**
 * Chat Interface Styles
 */

.chat-container {
    display: flex;
    height: calc(100vh - 60px); /* Subtract navbar height */
    max-height: 900px;
    margin: 0 auto;
    background-color: #F5F7FB;
}

/* ========== Sidebar ========== */
.chat-sidebar {
    width: 280px;
    background-color: var(--color-background);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-header h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.125rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    width: 100%;
}

.conversation-list {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xs);
}

.conversation-item {
    padding: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    background-color: #F5F7FB;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
}

.conversation-item:hover {
    background-color: #E8EDF7;
}

.conversation-item.active {
    background-color: var(--color-secondary);
    color: var(--color-background);
    border-color: var(--color-primary);
}

.conversation-item-preview {
    font-size: 0.875rem;
    color: var(--color-text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.conversation-item-time {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 0.25rem;
}

.conversation-item.active .conversation-item-preview,
.conversation-item.active .conversation-item-time {
    color: rgba(255, 255, 255, 0.9);
}

/* ========== Main Chat Area ========== */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--color-background);
}

.chat-header {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-background);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.chat-title h2 {
    color: var(--color-background);
    font-size: 1.5rem;
    margin: 0;
}

.chat-subtitle {
    font-size: 0.875rem;
    opacity: 0.9;
}

.chat-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #4CAF50;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ========== Messages ========== */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.message {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 80%;
    animation: fadeInUp 0.3s ease;
}

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

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.message.user .message-avatar {
    background-color: var(--color-accent);
    color: var(--color-background);
}

.message.assistant .message-avatar {
    background-color: var(--color-secondary);
    color: var(--color-background);
}

.message-content {
    flex: 1;
}

.message-bubble {
    padding: var(--spacing-sm);
    border-radius: 12px;
    word-wrap: break-word;
}

.message.user .message-bubble {
    background-color: var(--color-primary);
    color: var(--color-background);
}

.message.assistant .message-bubble {
    background-color: #F5F7FB;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.message-time {
    font-size: 0.75rem;
    color: var(--color-text-light);
    margin-top: 0.25rem;
    padding: 0 var(--spacing-xs);
}

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

/* Code blocks in messages */
.message-bubble pre {
    background-color: #1E1E1E;
    color: #D4D4D4;
    padding: var(--spacing-sm);
    border-radius: 6px;
    overflow-x: auto;
    margin: var(--spacing-xs) 0;
    position: relative;
}

.message-bubble code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
}

.code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background-color: #2D2D2D;
    border-radius: 6px 6px 0 0;
    margin-bottom: -0.5rem;
}

.code-language {
    font-size: 0.75rem;
    color: #888;
    text-transform: uppercase;
}

.copy-btn {
    background-color: transparent;
    border: 1px solid #555;
    color: #D4D4D4;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.75rem;
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    background-color: #3E3E3E;
    border-color: #777;
}

/* ========== Welcome Message ========== */
.welcome-message {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-lg);
}

.welcome-message h3 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.welcome-message ul {
    text-align: left;
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.welcome-message li {
    margin-bottom: 0.5rem;
}

.example-prompts-title {
    margin-top: var(--spacing-md);
    font-weight: 600;
    color: var(--color-text);
}

.example-prompts {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.example-prompt {
    background-color: var(--color-background);
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
    padding: var(--spacing-sm);
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.95rem;
}

.example-prompt:hover {
    background-color: var(--color-secondary);
    color: var(--color-background);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ========== Input Area ========== */
.chat-input-container {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-background);
}

#chat-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.message-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    resize: vertical;
    min-height: 60px;
    max-height: 200px;
    transition: border-color var(--transition-fast);
}

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

.input-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.char-counter {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

#send-btn {
    min-width: 100px;
}

#send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Loading indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: var(--spacing-sm);
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-text-light);
    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;
    }
}

.loading {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--color-text-light);
}

/* System messages */
.system-message {
    text-align: center;
    padding: var(--spacing-sm);
    margin: var(--spacing-sm) auto;
    max-width: 400px;
    background-color: #E3F2FD;
    border: 1px solid #90CAF9;
    border-radius: 6px;
    font-size: 0.875rem;
    color: #1976D2;
}

/* ========== Responsive Design ========== */
@media (max-width: 768px) {
    .chat-container {
        flex-direction: column;
        height: auto;
        min-height: calc(100vh - 60px);
    }

    .chat-sidebar {
        width: 100%;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .chat-main {
        height: calc(100vh - 260px);
    }

    .message {
        max-width: 95%;
    }

    .chat-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
}

/* ========== Scrollbar Styling ========== */
.chat-messages::-webkit-scrollbar,
.conversation-list::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track,
.conversation-list::-webkit-scrollbar-track {
    background: #F5F7FB;
}

.chat-messages::-webkit-scrollbar-thumb,
.conversation-list::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover,
.conversation-list::-webkit-scrollbar-thumb:hover {
    background: #B8C5D6;
}