.chat-drawer {
    position: fixed;
    inset: 0;
    z-index: 1000;
    pointer-events: none;
}

.chat-drawer.is-open {
    pointer-events: auto;
}

.chat-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.chat-drawer.is-open .chat-overlay {
    opacity: 1;
}

.chat-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 420px;
    max-width: 100%;
    height: 100%;
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.chat-drawer.is-open .chat-panel {
    transform: translateX(0);
}

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

.chat-header h3 {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: 600;
}

.chat-close {
    color: var(--color-text-muted);
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.chat-close:hover {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.chat-message {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    line-height: 1.6;
    max-width: 90%;
    word-wrap: break-word;
}

.chat-message--user {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    align-self: flex-end;
    border-bottom-right-radius: var(--radius-sm);
}

.chat-message--assistant {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    align-self: flex-start;
    border-bottom-left-radius: var(--radius-sm);
}

.chat-message--assistant strong {
    color: var(--color-accent-primary);
}

.chat-message--assistant p {
    margin: 0;
}

.chat-message--assistant p + p {
    margin-top: 0.75em;
}

.chat-message--assistant ul {
    margin: 0.5em 0;
    padding-left: 1.25em;
}

.chat-message--assistant li {
    margin-bottom: 0.25em;
}

.chat-message--assistant em {
    font-style: italic;
    color: var(--color-text-primary);
}

.chat-message--error {
    background: var(--color-error-dim);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--color-error);
    align-self: center;
    font-size: var(--text-xs);
}

.chat-suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
}

.chat-suggestion-btn {
    padding: var(--space-xs) var(--space-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 9999px;
    color: var(--color-text-secondary);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.chat-suggestion-btn:hover {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.chat-input-area {
    display: flex;
    align-items: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.chat-input {
    flex: 1;
    padding: var(--space-md);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--text-sm);
    resize: none;
    max-height: 120px;
    transition: border-color var(--transition-fast);
}

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

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

.chat-send-btn {
    padding: var(--space-md);
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
    border-radius: var(--radius-md);
    transition: opacity var(--transition-fast);
    flex-shrink: 0;
}

.chat-send-btn:hover {
    opacity: 0.9;
}

/* Typing indicator */
.chat-typing {
    display: flex;
    gap: 4px;
    padding: var(--space-md) var(--space-lg);
    align-self: flex-start;
}

.chat-typing span {
    width: 8px;
    height: 8px;
    background: var(--color-text-muted);
    border-radius: 50%;
    animation: typing-dot 1.4s infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing-dot {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
    30% { transform: translateY(-6px); opacity: 1; }
}

@media (max-width: 768px) {
    .chat-panel {
        width: 100%;
    }
}