.ai-chat-panel {
    display: flex;
    flex-direction: column;
    min-height: 60vh;
}

.ai-chat-messages {
    flex: 1;
    overflow-y: auto;
    max-height: 55vh;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-1) 0;
}

.ai-chat-bubble {
    display: flex;
    max-width: 85%;
}

.ai-chat-bubble-user {
    align-self: flex-end;
}

.ai-chat-bubble-assistant {
    align-self: flex-start;
}

.ai-chat-bubble-body {
    padding: 0.6rem 0.85rem;
    border-radius: 1rem;
    line-height: 1.4;
    font-size: 0.95rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.ai-chat-bubble-user .ai-chat-bubble-body {
    background: var(--primary);
    color: #fff;
    border-bottom-right-radius: 0.25rem;
}

.ai-chat-bubble-assistant .ai-chat-bubble-body {
    background: var(--surface-soft);
    color: inherit;
    border: 1px solid var(--border-subtle);
    border-bottom-left-radius: 0.25rem;
}

.ai-chat-loading .ai-chat-bubble-body {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    min-height: 1.25rem;
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
}

.ai-chat-typing-dot {
    width: 0.4rem;
    height: 0.4rem;
    border-radius: 50%;
    background: var(--muted);
    animation: ai-chat-typing-bounce 1.2s ease-in-out infinite;
}

.ai-chat-typing-dot:nth-child(2) {
    animation-delay: 0.15s;
}

.ai-chat-typing-dot:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes ai-chat-typing-bounce {
    0%,
    60%,
    100% {
        opacity: 0.35;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-0.25rem);
    }
}

.ai-chat-composer {
    margin-top: auto;
    padding-top: var(--space-2);
}

.ai-chat-composer .ai-chat-input {
    flex: 1;
    min-height: 2.5rem;
    max-height: 160px;
    resize: none;
    overflow-y: hidden;
    line-height: 1.4;
    field-sizing: content;
}

.ai-draft-exercise-list {
    padding-left: 1.1rem;
}

.ai-draft-actions {
    border-top: 1px solid var(--border);
}