.braven-ai-chat {
    --braven-bg: #ffffff;
    --braven-text: #17202a;
    --braven-muted: #687386;
    --braven-border: #d7dde6;
    --braven-panel: #f7f9fc;
    --braven-user: #0b63ce;
    --braven-user-text: #ffffff;
    --braven-assistant: #eef2f7;
    --braven-accent: #0f8f72;
    color: var(--braven-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.45;
    letter-spacing: 0;
}

.braven-ai-chat.braven-theme-dark {
    --braven-bg: #12161d;
    --braven-text: #f4f7fb;
    --braven-muted: #aab4c3;
    --braven-border: #2d3746;
    --braven-panel: #1b222c;
    --braven-user: #2878e3;
    --braven-user-text: #ffffff;
    --braven-assistant: #242d39;
    --braven-accent: #31b889;
}

@media (prefers-color-scheme: dark) {
    .braven-ai-chat:not(.braven-theme-light) {
        --braven-bg: #12161d;
        --braven-text: #f4f7fb;
        --braven-muted: #aab4c3;
        --braven-border: #2d3746;
        --braven-panel: #1b222c;
        --braven-user: #2878e3;
        --braven-user-text: #ffffff;
        --braven-assistant: #242d39;
        --braven-accent: #31b889;
    }
}

.braven-ai-chat--floating {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 999999;
}

.braven-ai-launcher {
    width: 58px;
    height: 58px;
    border-radius: 8px;
    border: 0;
    background: #0b63ce;
    color: #fff;
    box-shadow: 0 14px 35px rgba(18, 32, 48, .22);
    cursor: pointer;
    font-weight: 800;
    font-size: 22px;
}

.braven-ai-panel {
    display: flex;
    flex-direction: column;
    width: min(390px, calc(100vw - 28px));
    height: min(650px, calc(100vh - 110px));
    background: var(--braven-bg);
    border: 1px solid var(--braven-border);
    border-radius: 8px;
    box-shadow: 0 24px 60px rgba(18, 32, 48, .24);
    overflow: hidden;
}

.braven-ai-chat--floating .braven-ai-panel {
    position: absolute;
    right: 0;
    bottom: 74px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity .18s ease, transform .18s ease;
}

.braven-ai-chat--floating.is-open .braven-ai-panel {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.braven-ai-chat--inline .braven-ai-panel {
    width: 100%;
    max-width: 900px;
    min-height: 600px;
    height: 70vh;
    box-shadow: none;
}

.braven-ai-chat.is-fullscreen {
    inset: 18px;
    right: 18px;
    bottom: 18px;
}

.braven-ai-chat.is-fullscreen .braven-ai-panel {
    width: calc(100vw - 36px);
    height: calc(100vh - 36px);
    right: 0;
    bottom: 0;
}

.braven-ai-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px;
    background: var(--braven-panel);
    border-bottom: 1px solid var(--braven-border);
}

.braven-ai-header strong,
.braven-ai-header span {
    display: block;
}

.braven-ai-header strong {
    font-size: 14px;
}

.braven-ai-header span {
    color: var(--braven-muted);
    font-size: 12px;
}

.braven-ai-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.braven-ai-icon-btn,
.braven-ai-feedback button {
    min-width: 32px;
    height: 32px;
    border: 1px solid var(--braven-border);
    border-radius: 8px;
    background: var(--braven-bg);
    color: var(--braven-text);
    cursor: pointer;
    font-size: 12px;
}

.braven-ai-body {
    flex: 1;
    overflow-y: auto;
    padding: 18px 14px;
    background: var(--braven-bg);
}

.braven-ai-message {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.braven-ai-message--user {
    align-items: flex-end;
}

.braven-ai-message--assistant {
    align-items: flex-start;
}

.braven-ai-bubble {
    max-width: min(82%, 720px);
    padding: 12px 14px;
    border-radius: 8px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.braven-ai-message--user .braven-ai-bubble {
    background: var(--braven-user);
    color: var(--braven-user-text);
}

.braven-ai-message--assistant .braven-ai-bubble {
    background: var(--braven-assistant);
    color: var(--braven-text);
}

.braven-ai-sources,
.braven-ai-confidence,
.braven-ai-feedback {
    max-width: min(82%, 720px);
    margin-left: 2px;
}

.braven-ai-sources {
    display: grid;
    gap: 5px;
    font-size: 12px;
}

.braven-ai-sources a {
    color: var(--braven-user);
    text-decoration: none;
    overflow-wrap: anywhere;
}

.braven-ai-sources a:hover {
    text-decoration: underline;
}

.braven-ai-confidence {
    display: grid;
    gap: 5px;
    color: var(--braven-muted);
    font-size: 12px;
}

.braven-ai-confidence div {
    width: 160px;
    height: 6px;
    border-radius: 8px;
    background: var(--braven-border);
    overflow: hidden;
}

.braven-ai-confidence i {
    display: block;
    height: 100%;
    background: var(--braven-accent);
}

.braven-ai-feedback {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.braven-ai-feedback button {
    padding: 0 10px;
}

.braven-ai-typing {
    padding: 0 16px 10px;
}

.braven-ai-typing span {
    display: inline-block;
    width: 7px;
    height: 7px;
    margin-right: 4px;
    border-radius: 50%;
    background: var(--braven-muted);
    animation: bravenTyping 1s infinite ease-in-out;
}

.braven-ai-typing span:nth-child(2) {
    animation-delay: .15s;
}

.braven-ai-typing span:nth-child(3) {
    animation-delay: .3s;
}

@keyframes bravenTyping {
    0%, 80%, 100% { transform: translateY(0); opacity: .45; }
    40% { transform: translateY(-4px); opacity: 1; }
}

.braven-ai-form {
    display: grid;
    grid-template-columns: 1fr 46px;
    gap: 8px;
    padding: 12px;
    border-top: 1px solid var(--braven-border);
    background: var(--braven-panel);
}

.braven-ai-form textarea {
    width: 100%;
    min-height: 44px;
    max-height: 140px;
    resize: none;
    border: 1px solid var(--braven-border);
    border-radius: 8px;
    padding: 11px 12px;
    background: var(--braven-bg);
    color: var(--braven-text);
    box-shadow: none;
    outline: none;
}

.braven-ai-form textarea:focus {
    border-color: var(--braven-user);
}

.braven-ai-form button {
    width: 46px;
    height: 44px;
    border: 0;
    border-radius: 8px;
    background: var(--braven-accent);
    color: #fff;
    cursor: pointer;
    font-weight: 800;
}

@media (max-width: 520px) {
    .braven-ai-chat--floating {
        right: 12px;
        bottom: 12px;
    }

    .braven-ai-chat--floating .braven-ai-panel {
        width: calc(100vw - 24px);
        height: calc(100vh - 92px);
    }

    .braven-ai-bubble,
    .braven-ai-sources,
    .braven-ai-confidence,
    .braven-ai-feedback {
        max-width: 92%;
    }
}