.vani-chat-toggle-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: #2563eb;
    color: #ffffff;
    border: none;
    border-radius: 30px;
    padding: 12px 20px;
    font-size: 14px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
    cursor: pointer;
    z-index: 99999;
    transition: transform 0.2s ease, background-color 0.2s ease;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.vani-chat-toggle-btn:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.vani-chat-window {
    display: none;
    position: fixed;
    bottom: 80px;
    right: 24px;
    width: 380px;
    height: 520px;
    max-width: calc(100vw - 32px);
    max-height: calc(100vh - 100px);
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
    z-index: 99999;
    flex-direction: column;
    overflow: hidden;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.vani-chat-window.active {
    display: flex;
}

.vani-chat-header {
    background: #1e293b;
    color: #ffffff;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.vani-chat-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
}

.vani-chat-close-btn {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
    line-height: 1;
}

.vani-chat-close-btn:hover {
    color: #ffffff;
}

.vani-chat-body {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
    background: #f8fafc;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.vani-chat-message {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 13px;
    line-height: 1.5;
}

.vani-chat-message.user {
    align-self: flex-end;
    background: #2563eb;
    color: #ffffff;
    border-bottom-right-radius: 2px;
}

.vani-chat-message.assistant {
    align-self: flex-start;
    background: #ffffff;
    color: #1e293b;
    border: 1px solid #e2e8f0;
    border-bottom-left-radius: 2px;
}

.message-sources {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid #f1f5f9;
    font-size: 11px;
    color: #64748b;
}

.message-sources ul {
    margin: 4px 0 0 0;
    padding-left: 16px;
}

.message-sources a {
    color: #2563eb;
    text-decoration: none;
}

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

.vani-chat-footer {
    padding: 12px;
    background: #ffffff;
    border-top: 1px solid #e2e8f0;
}

#vani-chat-form {
    display: flex;
    gap: 8px;
}

#vani-chat-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 13px;
    outline: none;
}

#vani-chat-input:focus {
    border-color: #2563eb;
}

#vani-chat-send-btn {
    background: #2563eb;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}

#vani-chat-send-btn:hover {
    background: #1d4ed8;
}