.ai-summarize {
    position: fixed;
    right: 0;
    left: auto;
    top: 50%;
    z-index: 68;
    transform: translateY(-50%);
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    pointer-events: none;
}

.ai-summarize-rail {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
    width: 4.5rem;
    padding: 0.85rem 0.45rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-right: none;
    border-radius: 1rem 0 0 1rem;
    background: linear-gradient(180deg, rgba(136, 19, 55, 0.97) 0%, rgba(67, 20, 7, 0.98) 100%);
    color: #fff;
    box-shadow: -8px 0 32px rgba(15, 23, 42, 0.22);
    backdrop-filter: blur(10px);
    pointer-events: auto;
}

.ai-summarize-title {
    margin: 0;
    font-size: 0.62rem;
    font-weight: 800;
    line-height: 1.25;
    text-align: center;
    letter-spacing: 0.02em;
}

.ai-summarize-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.ai-summarize-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3.1rem;
    padding: 0.45rem 0.35rem;
    border-radius: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    font-size: 0.62rem;
    font-weight: 800;
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    transition: background 0.2s ease, transform 0.2s ease;
}

.ai-summarize-btn:hover {
    background: rgba(255, 255, 255, 0.16);
    transform: translateX(-2px);
}

.ai-summarize-btn-chatgpt {
    background: rgba(16, 163, 127, 0.28);
}

.ai-summarize-btn-grok {
    background: rgba(15, 23, 42, 0.5);
}

.ai-summarize-btn-perplexity {
    background: rgba(32, 128, 141, 0.32);
}

.ai-summarize-btn-claude {
    background: rgba(217, 119, 6, 0.28);
}

@media (max-width: 768px) {
    .ai-summarize {
        top: auto;
        right: 0.75rem;
        left: 0.75rem;
        bottom: 5.25rem;
        transform: none;
    }

    .ai-summarize-rail {
        width: auto;
        flex-direction: row;
        align-items: center;
        gap: 0.5rem;
        padding: 0.55rem 0.65rem;
        border-right: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 1rem;
    }

    .ai-summarize-title {
        flex: 0 0 3.25rem;
        font-size: 0.58rem;
        text-align: left;
    }

    .ai-summarize-buttons {
        flex: 1;
        flex-direction: row;
        gap: 0.35rem;
    }

    .ai-summarize-btn {
        flex: 1;
        min-height: 2.5rem;
        padding: 0.35rem 0.25rem;
        font-size: 0.58rem;
    }

    .ai-summarize-btn:hover {
        transform: translateY(-1px);
    }
}