.ai-floating-chat {
    position: fixed;
    right: 16px;
    bottom: 16px;
    /* Keep below Bootstrap offcanvas/backdrop so the menu is never obscured. */
    z-index: 1030;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    font-size: 0.95rem;
}

.ai-chat-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: var(--bs-primary);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ai-chat-toggle i {
    font-size: 1.4rem;
}

.ai-chat-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.ai-chat-window {
    width: 300px;
    height: 400px;
    border-radius: 16px;
    border: 1px solid var(--bs-border-color);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.2);
}

.ai-chat-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: rgba(var(--bs-primary-rgb), 0.08);
    border-bottom: 1px solid var(--bs-border-color);
    cursor: grab;
}

.ai-chat-title {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: var(--bs-body-color);
    white-space: nowrap;
}

.ai-chat-model {
    flex: 1;
    min-width: 120px;
}

.ai-chat-close {
    color: var(--bs-secondary-color, #6c757d);
    padding: 0 4px;
}

.ai-chat-body {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
    background: rgba(255, 255, 255, 0.6);
}

.ai-chat-messages {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ai-chat-message {
    display: flex;
}

.ai-chat-message--user {
    justify-content: flex-end;
}

.ai-chat-message--assistant,
.ai-chat-message--system {
    justify-content: flex-start;
}

.ai-chat-bubble {
    max-width: 78%;
    padding: 8px 10px;
    border-radius: 12px;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.92rem;
}

.ai-chat-message--user .ai-chat-bubble {
    background: var(--bs-primary);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.ai-chat-message--assistant .ai-chat-bubble {
    background: var(--bs-light);
    color: var(--bs-body-color);
    border-bottom-left-radius: 4px;
    border: 1px solid var(--bs-border-color);
}

.ai-chat-message--system .ai-chat-bubble {
    background: rgba(var(--bs-warning-rgb), 0.15);
    color: var(--bs-body-color);
    border: 1px dashed rgba(var(--bs-warning-rgb), 0.4);
}

.ai-chat-message.is-loading .ai-chat-bubble {
    opacity: 0.8;
}

.ai-chat-footer {
    padding: 10px 12px;
    display: flex;
    gap: 8px;
    align-items: flex-end;
    border-top: 1px solid var(--bs-border-color);
    background: rgba(255, 255, 255, 0.75);
}

.ai-chat-input {
    resize: none;
    font-size: 0.9rem;
}

.ai-chat-send {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.ai-floating-chat.collapsed .ai-chat-window {
    display: none;
}

.ai-floating-chat.open .ai-chat-toggle {
    display: none;
}

.ai-floating-chat.dragging .ai-chat-header {
    cursor: grabbing;
}

.elder-mode .ai-floating-chat {
    font-size: 1.05rem;
}

.elder-mode .ai-chat-toggle {
    width: 64px;
    height: 64px;
}

.elder-mode .ai-chat-window {
    width: 320px;
    height: 440px;
}

.elder-mode .ai-chat-bubble {
    font-size: 1rem;
}

.elder-mode .ai-chat-input,
.elder-mode .ai-chat-send {
    font-size: 1rem;
}

@media (prefers-contrast: more) {
    .ai-chat-window {
        border-color: var(--bs-dark);
        box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
    }
}

@media (max-width: 767.98px) {
    .ai-floating-chat {
        right: 16px;
        bottom: 16px;
        left: auto;
        top: auto;
    }

    .ai-floating-chat.open {
        inset: 0;
        align-items: stretch;
        justify-content: flex-end;
    }

    .ai-floating-chat.open .ai-chat-window {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
    }

    .ai-chat-header {
        cursor: default;
    }
}