/* Duelink AI chat panel */
.duelink-ai-panel {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 0 20px 110px;
    pointer-events: none;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

body:has(.duelink-ai-assistant):has(.back-top) .duelink-ai-panel {
    padding-bottom: calc(var(--duelink-stack-base, 20px) + (var(--duelink-stack-size, 56px) + var(--duelink-stack-gap, 12px)) * 2 + var(--duelink-stack-size, 56px) + 24px);
}

.duelink-ai-panel.is-open {
    pointer-events: auto;
    visibility: visible;
    opacity: 1;
}

.duelink-ai-panel__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 35, 48, 0.35);
    backdrop-filter: blur(2px);
}

.duelink-ai-panel__container {
    position: relative;
    width: 100%;
    max-width: 420px;
    height: min(620px, calc(100vh - 140px));
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: translateY(24px) scale(0.96);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.duelink-ai-panel.is-open .duelink-ai-panel__container {
    transform: translateY(0) scale(1);
}

.duelink-ai-panel__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px;
    background: linear-gradient(135deg, #206b8b, #2690b7);
    color: #fff;
}

.duelink-ai-panel__title-wrap h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
}

.duelink-ai-panel__title-wrap p {
    margin: 4px 0 0;
    font-size: 12px;
    opacity: 0.9;
}

.duelink-ai-panel__close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    flex-shrink: 0;
}

.duelink-ai-panel__close:hover {
    background: rgba(255, 255, 255, 0.28);
}

.duelink-ai-panel__messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px 16px;
    background: #f3f7fa;
}

.duelink-ai-message {
    display: flex;
    margin-bottom: 16px;
    animation: duelink-ai-msg-in 0.25s ease;
}

@keyframes duelink-ai-msg-in {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.duelink-ai-message__bubble {
    max-width: 85%;
    padding: 12px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.6;
    word-break: break-word;
    white-space: pre-wrap;
}

.duelink-ai-message--bot .duelink-ai-message__bubble {
    background: #fff;
    color: #2d3748;
    border: 1px solid #e2e8f0;
    border-bottom-left-radius: 4px;
}

.duelink-ai-message--user .duelink-ai-message__bubble {
    background: linear-gradient(135deg, #2690b7, #52bbb6);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.duelink-ai-message__meta {
    display: block;
    margin-top: 6px;
    font-size: 11px;
    opacity: 0.65;
}

.duelink-ai-panel__typing {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 0 16px 8px;
    color: #64748b;
    font-size: 12px;
}

.duelink-ai-panel__typing.is-visible {
    display: flex;
}

.duelink-ai-panel__typing-dots span {
    display: inline-block;
    width: 6px;
    height: 6px;
    margin-right: 3px;
    border-radius: 50%;
    background: #2690b7;
    animation: duelink-ai-dot 1.2s infinite ease-in-out;
}

.duelink-ai-panel__typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.duelink-ai-panel__typing-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes duelink-ai-dot {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}

.duelink-ai-panel__composer {
    display: flex;
    gap: 10px;
    padding: 14px 16px 16px;
    border-top: 1px solid #e2e8f0;
    background: #fff;
}

.duelink-ai-panel__input {
    flex: 1;
    min-height: 44px;
    max-height: 120px;
    resize: none;
    border: 1px solid #cbd5e1;
    border-radius: 12px;
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.5;
    font-family: inherit;
}

.duelink-ai-panel__input:focus {
    outline: none;
    border-color: #2690b7;
    box-shadow: 0 0 0 3px rgba(38, 144, 183, 0.15);
}

.duelink-ai-panel__send {
    min-width: 72px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #206b8b, #2690b7);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    padding: 0 16px;
}

.duelink-ai-panel__send:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .duelink-ai-panel {
        padding: 0;
        align-items: stretch;
    }

    .duelink-ai-panel__container {
        max-width: none;
        height: 100%;
        border-radius: 0;
    }
}