/* Chat Styles */

/* Chat Layout */
.chat-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 280px;
    display: flex;
    flex-direction: column;
    background: var(--background-secondary);
    border-right: 1px solid var(--border-primary);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sidebar-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.new-chat-btn {
    margin: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--luca-gold), var(--luca-gold-active));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.new-chat-btn:hover {
    background: linear-gradient(135deg, var(--luca-gold-hover), var(--luca-gold));
    transform: translateY(-1px);
}

.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.conversation-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.conversation-item:hover {
    background: var(--background-tertiary);
}

.conversation-item.active {
    background: var(--background-tertiary);
    border-color: var(--luca-gold);
}

.conversation-title {
    font-weight: 500;
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-primary);
}

.conversation-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.sidebar-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--border-primary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--background-primary);
}

.chat-header {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--background-secondary);
    border-bottom: 1px solid var(--border-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.chat-header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.chat-header-logo {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--luca-gold), var(--luca-gold-active));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.chat-header-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

/* Messages Area */
.messages-area {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

/* Welcome Screen */
.welcome-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-xl);
}

.welcome-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--luca-gold), var(--luca-gold-active));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

.welcome-subtitle {
    color: var(--text-secondary);
    max-width: 500px;
    line-height: 1.6;
}

.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    max-width: 600px;
}

.chip {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--background-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.chip:hover {
    background: var(--luca-gold);
    color: white;
    border-color: var(--luca-gold);
    transform: translateY(-2px);
}

/* Messages */
.message {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: fadeIn 0.3s ease;
    max-width: 800px;
    width: 100%;
    margin-left: auto;
    margin-right: auto;
}

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

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

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--luca-gold), var(--luca-gold-active));
    color: white;
}

.message.user .message-avatar {
    background: var(--luca-azure);
}

.message-content {
    max-width: 70%;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    line-height: 1.6;
    background: var(--background-secondary);
    border: 1px solid var(--border-primary);
}

.message.user .message-content {
    background: var(--luca-azure);
    color: white;
    border-color: var(--luca-azure);
}

.message-content p {
    margin-bottom: var(--spacing-sm);
}

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

.message-content h1, .message-content h2, .message-content h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.message-content code {
    background: rgba(0, 0, 0, 0.1);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.875em;
}

.message-content pre {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-sm) 0;
}

.message-content pre code {
    background: none;
    padding: 0;
}

.message-content ul, .message-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.message-content li {
    margin-bottom: var(--spacing-xs);
}

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

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

.message-timestamp {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    align-self: flex-end;
}

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

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
}

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

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-8px); }
}

/* Input Area */
.input-area {
    padding: var(--spacing-lg);
    background: var(--background-secondary);
    border-top: 1px solid var(--border-primary);
}

.input-container {
    display: flex;
    gap: var(--spacing-md);
    background: var(--background-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.input-container:focus-within {
    border-color: var(--luca-gold);
    box-shadow: 0 0 0 3px rgba(174, 157, 93, 0.1);
}

.message-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    resize: none;
    outline: none;
    font-family: var(--font-body);
    min-height: 24px;
    max-height: 120px;
}

.message-input::placeholder {
    color: var(--text-muted);
}

.send-button {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--luca-gold), var(--luca-gold-active));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.send-button:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--luca-gold-hover), var(--luca-gold));
    transform: translateY(-1px);
}

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

.input-hint {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.message-counter {
    font-variant-numeric: tabular-nums;
}

/* Mobile Responsive */
.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        z-index: 100;
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .mobile-menu-button {
        display: block;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    .welcome-logo {
        width: 60px;
        height: 60px;
    }
    
    .welcome-title {
        font-size: 1.5rem;
    }
    
    .suggestion-chips {
        padding: 0 var(--spacing-md);
    }
}

@media (min-width: 769px) {
    .mobile-menu-button {
        display: none;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .message {
        animation: none;
    }
    
    .typing-dot {
        animation: none;
    }
    
    .chip:hover {
        transform: none;
    }
}

/* Focus states */
.message-input:focus {
    outline: none;
}

.conversation-item:focus-visible {
    outline: 2px solid var(--luca-gold);
    outline-offset: -2px;
}

.send-button:focus-visible {
    outline: 2px solid var(--luca-gold);
    outline-offset: 2px;
}

/* Copy button for code blocks */
.code-block {
    position: relative;
    margin: var(--spacing-md) 0;
}

.code-block pre {
    margin: 0;
}

.copy-button {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--background-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-base);
}

.copy-button:hover {
    background: var(--luca-gold);
    color: white;
    border-color: var(--luca-gold);
}

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